\u3067\u306f ReactJS \u7b2c\uff12\u56de\u76ee\u3044\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002\n\u4eca\u56de\u306f\u4e0b\u56f3\u306e\u3088\u3046\u306a\u611f\u3058\u304c\u5b8c\u6210\u56f3\u3067\u3059\u3002<\/p>\n
<\/a><\/p>\n\u5358\u7d14\u306bToDo\u304c\u4e00\u89a7\u3055\u308c\u3066\u304a\u308a\u3001ToDo\u306e\u6a2a\u306b\u306f\u524a\u9664\u30dc\u30bf\u30f3\u304c\u3042\u308a\u3002\nToDo\u3092\u8ffd\u52a0\u3057\u305f\u3044\u5834\u5408\u306f\u4e0a\u90e8\u306e\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u6587\u5b57\u3092\u5165\u529b\u3057\n\u8ffd\u52a0\u30dc\u30bf\u30f3\u3092\u62bc\u3059\u3002<\/p>\n\u305f\u3063\u305f\u3053\u308c\u3060\u3051\u3067\u3059\u3002\n\u307e\u3041\u3053\u306e\u305f\u3063\u305f\u3053\u308c\u3060\u3051\u304c\u7d50\u69cb\u96e3\u3057\u3044\u3093\u3067\u3059\u3051\u3069\u306d\u3002<\/p>\n\u3067\u306f\u3044\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\u307e\u305a\u306f\u521d\u671f\u5024\u3068\u306a\u308b\u5909\u6570\u3092\u3053\u3093\u306a\u611f\u3058\u3067\u7528\u610f\u3057\u307e\u3059\u3002<\/p>\n[bash]\n var DATAS = [\n {id:1, content:”Softbank\u89e3\u7d04”},\n {id:2, content:”R-SIM10\u8cfc\u5165”},\n {id:3, content:”\u570f\u5916\u75c5\u3092\u514b\u670d\u3059\u308bSIM\u30d5\u30ea\u30fc\u30eb\u30fc\u30bf\u30fc\u30b2\u30c3\u30c8”},\n {id:4, content:”\u697d\u5929\u30e2\u30d0\u30a4\u30eb\u7533\u3057\u8fbc\u307f”}\n ]\n[\/bash]<\/p>\n\u3053\u306e\u5909\u6570\u304cToDo\u30ea\u30b9\u30c8\u306e\u521d\u671f\u5024\u3067\u3059\u3002\n\u3067\u306f\u6b21\u3001\u753b\u9762\u30a4\u30e1\u30fc\u30b8\u304b\u3089\u3001\u4f55\u500b\u306e\u72ec\u81ea\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3057\u306a\u304d\u3083\u3044\u3051\u306a\u3044\u304b\u8003\u3048\u307e\u3057\u3087\u3046\u3002\n\u7c21\u5358\u306b\u8a00\u3063\u3066\u307e\u3059\u304c\u3001\u3053\u308c\u304b\u306a\u308a\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n\u8981\u306f\u3069\u3093\u306a\u304c\u5b8c\u6210\u56f3\u304c\u3042\u308b\u304b\u3089\u3001\u3069\u3046\u3044\u3046\u30d1\u30fc\u30c4\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u753b\u9762\u3092\u4f5c\u308d\u3046\u304b\uff1f\uff1f<\/h4>\n\u3068\u8003\u3048\u308b\u306e\u3067\u3059\u3002\u305d\u306e\u30d1\u30fc\u30c4\u304c class\u3067\u3042\u308a\u3001\u305d\u306e class\u304c\u72ec\u81ea\u30bf\u30b0\u306a\u3093\u3067\u3059\u306d\u3002<\/p>\nToDo\u30ea\u30b9\u30c8\u306f\u81f3\u3063\u3066\u30b7\u30f3\u30d7\u30eb\u3002\nToDo\u306e\u4e00\u89a7\u3068\u306a\u308b\u30d1\u30fc\u30c4\u3002\u3053\u308c\u21d3\u21d3\u21d3\u3002<\/p>\n<\/a><\/p>\n\u3068ToDo\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u30d1\u30fc\u30c4\u3002\u3053\u308c\u21d3\u21d3\u21d3\u3002<\/p>\n<\/a><\/p>\n\u305d\u3057\u3066ToDo\u306e\u4e00\u89a7\u306e\u4e00\u884c\u3092\u69cb\u6210\u3059\u308b\u30d1\u30fc\u30c4\u3002\u3053\u308c\u21d3\u21d3\u21d3\u3002<\/p>\n<\/a><\/p>\n\u30d1\u30fc\u30c4\u306f\u6c7a\u307e\u308a\u307e\u3057\u305f\u306e\u3067\u3001\u3053\u306e\u30d1\u30fc\u30c4\u3092\u30af\u30e9\u30b9\u3068\u3057\u3066\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3059\u3002<\/p>\n\u307e\u305a\u6700\u521d\u306e\u30d1\u30fc\u30c4 ToDo\u4e00\u89a7\u3092\u3000DataList\u3002\n\u6b21\u306bToDo\u3092\u8ffd\u52a0\u3059\u308b\u30d1\u30fc\u30c4\u3092 NewToDo\u3002\nToDo\u306e\u4e00\u884c\u3092\u69cb\u6210\u3059\u308b\u30d1\u30fc\u30c4\u3092\u3000DataLine\n\u6700\u5f8c\u306b\u3053\u308c\u3089\u5168\u90e8\u3092\u5305\u542b\u3059\u308b ToDoList\u3000\u3068\u3057\u307e\u3059\u3002<\/p>\n\u56f3\u3067\u66f8\u304f\u3068\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/a><\/p>\n\u3067\u306f\u307e\u305aToDo\u4e00\u89a7\u3067\u3042\u308b\u3000DataList\u3092\u30af\u30e9\u30b9\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n class DataList extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleOnDelete(id){\n this.props.onDelete(id);\n }<\/p>\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push( this.handleOnDelete(id)}\/>);\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u306a\u3093\u306e\u3053\u3068\u304b\u7406\u89e3\u3067\u304d\u307e\u3059\u304b\uff1f \u666e\u901a\u96e3\u3057\u3044\u306a\u3041\u3068\u601d\u3044\u307e\u3059\u3088\u306d\u3002<\/p>\n\u30af\u30e9\u30b9\u5b9a\u7fa9\u306e\u8aac\u660e\u306f HelloWorld\u3092\u51fa\u529b\u3059\u308b\u90e8\u5206\u3067\u3084\u3063\u305f\u306e\u3067\u5272\u611b\u3057\u307e\u3059\u3002<\/p>\n\u3067\u306f \u6b21\u306econstructor\u3000\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb\n\u8981\u306f\u30af\u30e9\u30b9\u306e\u521d\u671f\u5316\u51e6\u7406\u3092\u3053\u3053\u3067\u884c\u3044\u307e\u3059\u3088\u3000\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb\n\u521d\u671f\u5316\u3067\u3059\u308b\u3053\u3068\u306f\u7279\u306b\u306a\u3044\u306e\u3067\u3001\u304a\u6c7a\u307e\u308a\u306e\u304a\u307e\u3058\u306a\u3044 super(props)\u3060\u3051\u3092\u8a18\u8ff0\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n[bash]\n constructor(props){\n super(props);\n }\n[\/bash]<\/p>\n\u6b21\u306e handleOnDelete \u3053\u308c\u306a\u3093\u3067\u3059\u304c\u30fb\u30fb \u5fc5\u8981\u3067\u3059\u304c\u3001\u3053\u306e\u8aac\u660e\u306f\u5f8c\u56de\u3057\u306b\u3057\u307e\u3059\u3002<\/p>\n[bash]\n handleOnDelete(id){\n this.props.onDelete(id);\n }\n[\/bash]<\/p>\n\u6700\u5f8c\u306b render\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\nHelloWorld\u3067\u3082\u3084\u3063\u305f\u3088\u3046\u306b\u3001render\u30e1\u30bd\u30c3\u30c9\u3067\u3001\u3053\u306e\u30af\u30e9\u30b9\u304c\u51fa\u529b\u3059\u308b\nHTML\u30bf\u30b0\u3092\u69cb\u7bc9\u3059\u308b\u3093\u3067\u3059\u3002<\/p>\nToDo\u306e\u4e00\u89a7\u306a\u3093\u3067\u3001\u3053\u306e\u30af\u30e9\u30b9\u3092\u4f5c\u308b\u3068\u304d\u306bToDo\u306e\u4e00\u89a7\u3068\u306a\u308b\u30c7\u30fc\u30bf\u3092\u5f15\u304d\u6e21\u3057\u3066\u3082\u3089\u3046\u3053\u3068\u3092\u60f3\u5b9a\u3057\u307e\u3059\u3002\n\u305d\u308c\u304c\u3000this.props.datas\u3000\u3068\u3044\u3046\u5909\u6570\u3067\u53c2\u7167\u3067\u304d\u307e\u3059\u3002<\/p>\nrender\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067\u306f\u3001\u3053\u306e\u5909\u6570\u3092\u30eb\u30fc\u30d7\u3067\u56de\u3057\u3066\u3001 dlist\u3068\u3044\u3046\u5909\u6570\u306b push\u3057\u3066\u3044\u3063\u3066\u307e\u3059\u3002\npush\u3059\u308b\u5185\u5bb9\u306f\u3001ToDo\u306e\uff11\u884c\u3092\u69cb\u6210\u3059\u308b DataLine\u30bf\u30b0\uff08\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u3067\u3059\u3002<\/p>\n\u305d\u3057\u3066 render\u30e1\u30bd\u30c3\u30c9\u304c\u30ea\u30bf\u30fc\u30f3\u3059\u308b\u5185\u5bb9\u306f <div>\u30bf\u30b0\u306e\u4e2d\u306b\u4e0a\u8a18\u306e\u914d\u5217\u5909\u6570\u3092\u7d44\u307f\u8fbc\u3093\u3060\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push( this.handleOnDelete(id)}\/>);\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n[\/bash]<\/p>\n\u809d\u5fc3\u306a\u3053\u3068\u3092\u5fd8\u308c\u3066\u3044\u307e\u3057\u305f\u3002\n\uff13\u3064\u306e\u30d1\u30fc\u30c4\u3092\u5305\u542b\u3059\u308b\u4e00\u756a\u5927\u304d\u306a\u30d1\u30fc\u30c4\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u308c\u3092ToDoList\u30af\u30e9\u30b9\u3068\u3057\u307e\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306e\u30bd\u30fc\u30b9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);<\/p>\n this.state = {\n datas: props.datas\n }\n }<\/p>\n render(){\n return (<\/p>\n\n \n \n <\/div>\n );\n }\n }\n[\/bash]<\/p>\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001NewToDo\u30bf\u30b0\u3068DataList\u30bf\u30b0\u3092\u69cb\u7bc9\u3057\u3066\u3044\u308b\u306e\u304c\u89e3\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u305d\u3057\u3066 DataList\u30bf\u30b0\u306e datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b this.state.datas\u3000\u3092\u6e21\u3057\u3066\u3044\u307e\u3059\u3002\nthis.state.datas\u3000\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\uff1f\nstate\u3068\u306f\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u52d5\u7684\u306a\u5909\u6570\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\nReactJS\u3067\u306f state\u306e\u5024\u304c\u5909\u66f4\u3055\u308c\u308b\u3068\u3001\u81ea\u52d5\u7684\u306b\u305d\u306estate\u306e\u5024\u304c\u6307\u3057\u793a\u3059 HTML\u3092\u66f8\u304d\u63db\u3048\u308b\u4ed5\u7d44\u307f<\/h4>\n\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n\u3067\u3001\u5b9f\u969b\u306b\u3053\u3053\u3067\u306f\u3000this.state.datas\u3000\u306b\u4f55\u304c\u5165\u3063\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u6700\u521d\u306e\u65b9\u3067\u8aac\u660e\u3057\u305f\nToDo\u30ea\u30b9\u30c8\u306e\u4e2d\u8eab\u3067\u3042\u308b DATAS\u5909\u6570\u304c\u5165\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u3053\u308c\u3067\u306f\u8a00\u8449\u8db3\u3089\u305a\u3067\u3059\u306d\u3002\nToDoList\u30af\u30e9\u30b9\u304c\u5168\u30af\u30e9\u30b9\u306e\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u3067\u3042\u308b\u306e\u3067\u3001\nReactDOM.render \u3067\u306f\u3000ToDoList\u30af\u30e9\u30b9\u3092\u3000render\u3057\u3066\u3082\u3089\u3044\u307e\u3059\u3002\n\u30bd\u30fc\u30b9\u3067\u66f8\u304f\u3068\u3053\u3093\u306a\u611f\u3058\u3002<\/p>\n[bash]\nReactDOM.render(\n ,\n document.getElementById(“root”)\n);<\/p>\n[\/bash]<\/p>\n\u3067\u3001\u3053\u308c\u3060\u3051\u3060\u3068\u3001ToDoList\u306e\u521d\u671f\u5024\u3092\u6e21\u305b\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u306a\u308b\u306e\u3067\u3001\n\u6b63\u3057\u304f\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\u8981\u306f\u30af\u30e9\u30b9\u5185\u3067\u4f7f\u3044\u305f\u3044\u30c7\u30fc\u30bf\u306f \u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u305d\u3046\u306d\u3002\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u30c7\u30fc\u30bf\u3068\u306f\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u3082\u306e\u306a\u306e\u3067\u3000\uff5b\uff5d\u3000\u3067\u62ec\u3063\u3066\u6e21\u305d\u3046\u306d\u3068\u3044\u3046\u30eb\u30fc\u30eb\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n var DATAS = [\n {id:1, content:”Softbank\u89e3\u7d04”},\n {id:2, content:”R-SIM10\u8cfc\u5165”},\n {id:3, content:”\u570f\u5916\u75c5\u3092\u514b\u670d\u3059\u308bSIM\u30d5\u30ea\u30fc\u30eb\u30fc\u30bf\u30fc\u30b2\u30c3\u30c8”},\n {id:4, content:”\u697d\u5929\u30e2\u30d0\u30a4\u30eb\u7533\u3057\u8fbc\u307f”}\n ]<\/p>\n ReactDOM.render(\n ,\n document.getElementById(“root”)\n );\n[\/bash]<\/p>\n\u3067\u3001\u307e\u3060\u3053\u308c\u3067\u3082 DataList\u30af\u30e9\u30b9\u306e\u3000this.props.datas\u3000\u306b DATAS\u306e\u5024\u304c\u6e21\u3063\u3066\u3044\u304f\u4ed5\u7d44\u307f\u304c\u8aac\u660e\u3067\u304d\u3066\u3044\u307e\u305b\u3093\u306d\u3002\nDataList\u30af\u30e9\u30b9\u306f\u3000ToDoList\u30af\u30e9\u30b9\u306e\u5b50\u4f9b\u3067\u3059\u3002\u3064\u307e\u308a DataList\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\n\u4f5c\u6210\u3055\u308c\u3001\u305d\u306e\u6642\u306bDataList\u30af\u30e9\u30b9\u304c\u6271\u3046\u5909\u6570\u3068\u3057\u3066 datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u3092\u6e21\u3059\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u65e5\u672c\u8a9e\u3067\u66f8\u304f\u3068\u3084\u3084\u3053\u3057\u3044\u3067\u3059\u306d\u3002\n\u3064\u307e\u308a\u306f\u3001ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3053\u3068\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n this.state = {\n datas: props.datas\n }\n }<\/p>\n render(){\n return (<\/p>\n\n \n \n <\/div>\n );\n }\n }<\/p>\n[\/bash]<\/p>\nrender\u30e1\u30bd\u30c3\u30c9\u306e\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f\u5909\u6570\u306f\u3001 \u30af\u30e9\u30b9\u5185\u3067 props\uff08\u30d7\u30ed\u30d1\u30c6\u30a3\uff09\u3068\u3057\u3066\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306f datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f DATAS\u5909\u6570\u306e\u4e2d\u8eab\u3092\u81ea\u8eab\u306e\u30af\u30e9\u30b9\u306e state\u3068\u3057\u3066\u7ba1\u7406\u3057\u3088\u3046\u3068\u3057\u307e\u3059\u3002\n\u3053\u308c\u304c constructor\u306e\u4e2d\u306b\u3042\u308b\u3002<\/p>\nthis.state = {datas: this.props.datas};<\/p>\n\u3053\u308c\u3067 ToDoList\u30af\u30e9\u30b9 \u5185\u3067\u306f this.state.datas \u3067 DATAS\u306e\u5185\u5bb9\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3084\u3063\u3068\u3053\u308c\u3067 DataList\u306b DATAS\u306e\u5024\u304c\u6e21\u308b\u3053\u3068\u304c\u8aac\u660e\u3067\u304d\u307e\u3057\u305f\u304b\u306d\u30fb\u30fb\u30fb<\/p>\n\u3067\u306f\u3001\u6b21\u306fDataList\u306e render\u30e1\u30bd\u30c3\u30c9\u3067ToDo\u306e\u4e00\u884c\u4e00\u884c\u3092\u69cb\u6210\u3059\u308bDataLine\u30af\u30e9\u30b9\u3092\u4f5c\u3063\u3066\u3044\u308b\u3068\u3053\u308d\u3092\n\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push();\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n[\/bash]<\/p>\n\u914d\u5217\u5909\u6570 dlist\u306b DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092push\u3057\u3066\u3044\u3063\u3066\u307e\u3059\u306d\u3002\n\u305d\u3057\u3066\u3001DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e data\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u306e\uff11\u884c\u306e\u5024\n\u3064\u307e\u308aToDo\u4e00\u4ef6\u3092\u30c7\u30fc\u30bf\u3068\u3057\u3066\u6e21\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306f this.props.data\u3067\u3053\u306e\u5024\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nkey\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b\u3064\u3044\u3066\u3067\u3059\u304c\u3001ReactJS\u3067\u306f\u7e70\u308a\u8fd4\u3057\u30eb\u30fc\u30d7\u3067\u540c\u3058\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u751f\u6210\n\u3059\u308b\u3068\u304d\u306f\u3001\uff11\u3064\uff11\u3064\u3092\u30e6\u30cb\u30fc\u30af\u306b\u3059\u308b\u5024\u3092\u30ad\u30fc(key)\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\n\u3068\u3044\u3046\u30eb\u30fc\u30eb\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u3053\u3053\u3067\u306f DATAS\u306e\u4e2d\u306e\u30c7\u30fc\u30bf\u306e id\u3092\u30ad\u30fc\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\u3067\u306f\u3001ToDo\u306e\uff11\u4ef6\u306b\u3042\u305f\u308bDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u306a\u306b\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb<\/p>\n[bash]\n class DataLine extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n render(){\n return (<\/p>\n\n \u524a\u9664<\/button>\n {this.props.data.id} — {this.props.data.content}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u306e\u3088\u3046\u306bDataLine\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u30dc\u30bf\u30f3\uff11\u3064\u3068\u3001\u6587\u5b57\u5217\u3068\u3057\u3066\u306e\u30c7\u30fc\u30bf\u306eid\u3068content\u3092\u51fa\u529b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\u3053\u3053\u307e\u3067\u3067\u3001\u3088\u3046\u3084\u304f\u3001ToDoList\u3067\u524a\u9664\u30dc\u30bf\u30f3\u4ed8\u304d\u306e\u4e00\u89a7\u304c\u3067\u304d\u307e\u3057\u305f\u3002\n\u3067\u3082\u3001\u3053\u308c\u3058\u3083\u307e\u3060ToDo\u3082\u8ffd\u52a0\u3067\u304d\u306a\u3044\u3057\u3001\u524a\u9664\u3082\u3067\u304d\u306a\u3044\u3002<\/p>\n\u307e\u305a\u306f\u3001\u524a\u9664\u306e\u65b9\u306e\u8aac\u660e\u306b\u5165\u308a\u307e\u3057\u3087\u3046\u3002\n\u3067\u3001\u524a\u9664\u3092\u8003\u3048\u308b\u524d\u306b\u3001ReactJS\u3067\u30a2\u30d7\u30ea\u3092\u69cb\u7bc9\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u8aac\u660e\u3057\u3066\u304a\u304d\u307e\u3059\u3002\n\u30a2\u30d7\u30ea\u306f\u3069\u3093\u306a\u30d1\u30fc\u30c4\u3067\u69cb\u6210\u3055\u308c\u308b\u304b\u30fb\u30fb\u30fb\u3001\u3053\u308c\u306f\u3082\u3046\u8aac\u660e\u6e08\u307f\u3067\u3059\u306d\u3002\n\u6b21\u306b\u30a2\u30d7\u30ea\u3067\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5024\u3067\u7ba1\u7406\u3057\u3066\u3044\u304b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\u306f\u4f55\u304b\u30fb\u30fb\u30fb\n\u3053\u308c\u3092\u8003\u3048\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5024\u3067\u3001\u7ba1\u7406\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\uff1d\u30b9\u30c6\u30fc\u30c8(state\uff09\n<\/h4>\n\u306a\u3093\u3067\u3059\u3002\n\u305d\u3057\u3066\u3001\u3082\u3046\u3061\u3087\u3063\u3068\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u30fb\u30fb\u30fb\u3001\u4ed6\u306e\u5024\u304b\u3089\u8a08\u7b97\u3057\u305f\u308a\u3057\u3066\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u5024\u306f\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u306f\u7ba1\u7406\u3057\u307e\u305b\u3093\u3002\n\u3069\u3046\u8a08\u7b97\u3057\u3088\u3046\u3068\u3057\u3066\u3082\u3001\u3069\u3053\u304b\u3089\u3082\u5c0e\u304d\u51fa\u305b\u306a\u3044\u5909\u5316\u3059\u308b\u5024\u306e\u307f\u3092\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\u3055\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306b\u304a\u3044\u3066\u30b9\u30c6\u30fc\u30c8\u306f\u306a\u306b\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb<\/p>\n\u307e\u305a\u5f53\u7136\u3067\u3059\u304cToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf\u3067\u3059\u306d\u3002\n\u305d\u3057\u3066\u3082\u3046\u3072\u3068\u3064\u3001ToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024\u3067\u3059\u3002\n\u305d\u3057\u3066\u305d\u3057\u3066\u3001\u6700\u5f8c\u306b\u3082\u3046\u3072\u3068\u3064\u3002ToDo\u30ea\u30b9\u30c8\uff11\u4ef6\uff11\u4ef6\u306f\u30e6\u30cb\u30fc\u30af\u306a\u3082\u306e\u306a\u306e\u3067\u3001\nToDo\uff11\u4ef6\u306b\u5bfe\u3057\u3066\uff11\u3064\u306eID\u3092\u6301\u3061\u307e\u3059\u3002\u305d\u306eID\u306f\u91cd\u8907\u3057\u3066\u306f\u3044\u3051\u306a\u3044\u306e\u3067\u3000ID\u306e\u6700\u5927\u5024\u3092\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\u3067\u3001\u307e\u305f\u307e\u305f\u3053\u3053\u3082\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb\u30fb\n\u30b9\u30c6\u30fc\u30c8\u3092\u8ab0\u304c\u3001\u3064\u307e\u308a\u3069\u306e\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u304b\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb<\/p>\n\u4e00\u756a\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306b\u3042\u308b\u30af\u30e9\u30b9\u304c\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3059\u308b<\/h4>\n\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u3001\u672c\u5f53\u306f\u3053\u308c\u306f\u5618\u3060\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u6163\u308c\u306a\u3044\u3046\u3061\u306f\n\u4e00\u756a\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u308b\u306e\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002\n\u3064\u307e\u308a\u4eca\u56de\u306eToDo\u30ea\u30b9\u30c8\u3067\u8a00\u3046\u3068\u3000ToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }\n[\/bash]<\/p>\n\u3088\u3063\u3066 ToDoList\u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u4e0a\u8a18\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\uff08\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u306f\u30b9\u30c6\u30fc\u30c8\u3067\u7ba1\u7406\u3059\u308b\u5024\u306e\u521d\u671f\u5024\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\uff09<\/p>\nthis.state = \uff5b\u30b9\u30c6\u30fc\u30c8\u3067\u7ba1\u7406\u3059\u308b\u5909\u6570\u7fa4\uff5d<\/h4>\n\u305d\u3057\u3066\u3001 this.state = \u3068\u8a18\u8ff0\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u8a2d\u5b9a\u3067\u304d\u308b\u306e\u306f\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3060\u3051\u3060\u3068\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nReactJS\u3067\u306f\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u304c\u5909\u5316\u3059\u308b\u3068\u5fc5\u8981\u306a\u3068\u3053\u308d\u3060\u3051\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3092\u81ea\u52d5\u3067\u884c\u3044\u307e\u3059\u3002\n\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u30bb\u30c3\u30c8\u3057\u3066\u81ea\u52d5\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u306b\u306f\n\u30af\u30e9\u30b9\u306e\u3000setState\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002\n\u4f8b\u3048\u3070\u3001ToDo\u30ea\u30b9\u30c8\u306e\u6700\u5927ID(maxId)\u3092\u5909\u5316\u3055\u305b\u3088\u3046\u3068\u3059\u308b\u306a\u3089\u3070\n\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3059\u308b\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067<\/p>\n[bash]\nthis.setState({maxId: xxxx});\n[\/bash]<\/p>\n\u3068\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nID\u306e\u6700\u5927\u5024\u3092\u5909\u3048\u3066\u3082\u3001\u753b\u9762\u4e0a\u5909\u5316\u3059\u308b\u5fc5\u8981\u306e\u3042\u308b\u3068\u3053\u308d\u306f\u306a\u3044\u306e\u3067ReactJS\u306f\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u306e\u307f\u3092\u5909\u5316\u3055\u305b\u3001\u306a\u306b\u3082\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306f\u884c\u3044\u307e\u305b\u3093\u3002<\/p>\nToDo\u30ea\u30b9\u30c8\u304b\u3089\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u3053\u3068\u3092\u8003\u3048\u308b\u3068\u30fb\u30fb\u30fb\nToDoList\u30af\u30e9\u30b9\u5185\u306e\u4f55\u3089\u304b\u306e\u30e1\u30bd\u30c3\u30c9\u3067<\/p>\n[bash]\nvar newDatas = [];\nvar i;<\/p>\nfor (i = 0 ; i < this.state.datas.length ; i++){\n var data = this.state.datas[i];\n if (data.id != \u524a\u9664\u3059\u308bID){\n newDatas.push(data);\n }\n}<\/p>\nthis.setState({datas: newDatas});\n[\/bash]<\/p>\n\u3068\u3057\u3066\u3084\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\nReactJS\u304c\u7ba1\u7406\u3059\u308b datas\u30b9\u30c6\u30fc\u30c8\u304c\u5909\u5316\u3059\u308b\u3068\u3001\u305d\u306e\u5909\u6570\u306e\u5024\u3092\u4f7f\u3063\u3066\n\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u90e8\u5206\u304c\u81ea\u52d5\u7684\u306b\u8abf\u6574\u3055\u308c\u308b\u306e\u3067\u3059\u3002\n\u4f8b\u3048\u3070 jQuery\u306a\u3093\u304b\u3067\u540c\u3058\u3088\u3046\u306a\u3053\u3068\u3092\u3057\u3088\u3046\u3068\u601d\u3048\u3070\u3001\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u306e\u30bf\u30b0\u306e\u5b50\u4f9b\u3092\uff08ToDo\uff11\u4ef6\uff09\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\n\u4e0d\u8981\u306a\u884c\u306eHTML\u30bf\u30b0\u3092 remove\u3059\u308b\u306a\u3069\u3067\u3059\u306d\u3002<\/p>\n\u3067\u306f\u6b21\u306b\u30da\u30fc\u30b8\u4e0a\u3067\u8d77\u3053\u308b\u30a4\u30d9\u30f3\u30c8\u306f\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u6271\u3046\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\n\u307e\u305a\u3001ToDo\u4e00\u4ef6\u3092\u524a\u9664\u3059\u308b\u51e6\u7406\u3001\u3064\u307e\u308aToDo\u30ea\u30b9\u30c8\u306e\u5de6\u5074\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308b\n\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u305f\u51e6\u7406\u3092\u3069\u3053\u306b\u8a18\u8ff0\u3057\u3066\u3001\u30af\u30ea\u30c3\u30af\u306b\u3088\u3063\u3066\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u306fDataLine\u30af\u30e9\u30b9\u5185\u3067\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\n\u5f53\u7136\u30af\u30ea\u30c3\u30af\u30a4\u30d9\u30f3\u30c8\u306e\u51e6\u7406\u306fDataLine\u30af\u30e9\u30b9\u5185\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\u3069\u3046\u66f8\u304f\u304b\u3068\u3044\u3046\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class DataLine extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleClick()}>\u524a\u9664<\/button>\n {this.props.data.id} — {this.props.data.content}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u3053\u306f\u7d50\u69cb\u666e\u901a\u306a\u306e\u3067\u3059\u304c\u3001\u524a\u9664\u30dc\u30bf\u30f3\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u3044\u308b\u90e8\u5206\u3067\nonClick\u30a4\u30d9\u30f3\u30c8\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nReactJS\u3067\u306f onclick<\/strong>\u3067\u306f\u306a\u304f\u3001onClick<\/strong>\u3067\u3059\u3002\n\u305d\u3057\u3066onClick\u3092\u51e6\u7406\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e handleClick\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u307e\u3059\u3002<\/p>\n\u3067\u3001handelClick\u30e1\u30bd\u30c3\u30c9\u5185\u306e\u8a18\u8ff0\u3092\u898b\u3066\u307f\u308b\u3068<\/p>\n[bash]\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }\n[\/bash]<\/p>\n\u3068\u306a\u3063\u3066\u3044\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306edatas\u3000\u3092\u524a\u9664\u3057\u3066\u3044\u307e\u305b\u3093\u306d\u3002\n\u306a\u305c\u304b\u3068\u3044\u3046\u3068\u3001\u4eca\u56de\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u306f\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9ToDoList\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3057\u3066\u3044\u308b\u304b\u3089\u30fb\u30fb\n\u305d\u306e\u5909\u6570\u3092\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u3001\u524a\u9664\u3067\u304d\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3069\u3046\u3059\u308b\u304b\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u51e6\u7406\u3067\u304d\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306b\u304a\u9858\u3044\u3059\u308c\u3070\u826f\u3044<\/h4>\n[bash]\nthis.props.onDelete(this.props.data.id);\n[\/bash] <\/p>\n\u3053\u308c\u306f\u3001\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b onDelete\u3068\u3044\u3046\u306e\u3092\u4f5c\u308b\u3068\u3044\u3046\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\n\u305d\u3057\u3066\u305d\u308c\u306f\u5909\u6570\u3092\u7ba1\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u306f\u306a\u304f\u3066\u3001\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3060\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u96e3\u3057\u3044\u3067\u3059\u306d\u3002\u304b\u306a\u308a\u9811\u5f35\u3063\u3066\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nDataLine\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3042\u308b\u3002\n\u3067\u30fb\u30fb\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u3092DataLine\u30af\u30e9\u30b9\u3088\u308a\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u51e6\u7406\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308b\u304b\u3068\u3044\u3046\u3068\nDataLine\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u90e8\u5206\u306b\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3068\u3057\u3066\u3001\u4e0a\u4f4d\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002\n\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \u30b9\u30c6\u30fc\u30c8\u3092\u306a\u3093\u3068\u304b\u524a\u9664\u3057\u3088\u3046\u3068\u52aa\u529b\u3059\u308b\u3002\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u4eca\u56de\u306e\u4f8b\u3067\u8a00\u3046\u3068\u3001DataLine\u306e\uff11\u3064\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306f DataList\u30af\u30e9\u30b9\u306a\u306e\u3067\u30fb\u30fb\u30fb\n\u30c7\u30fc\u30bf\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u5909\u6570\u3092\u53c2\u7167\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\u51fa\u6765\u306a\u3044\uff1f\uff1f\uff1f\uff1f<\/p>\n\u3068\u601d\u3046\u65b9\u3082\u3044\u3089\u3063\u3057\u3083\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\nDataList\u306f\u30c7\u30fc\u30bf\u306e\u4e00\u89a7\u3092\u51fa\u529b\u3057\u3066\u308b\u3093\u3060\u304b\u3089\u3001\u5909\u6570\u306e\u5024\u3092\u524a\u9664\u3067\u304d\u308b\u3058\u3083\u3093\u3002\n\u305d\u3046\u601d\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002<\/p>\n\u3067\u3082 ReactJS\u306e\u9244\u5247<\/p>\n\u30b9\u30c6\u30fc\u30c8\u306f\u6700\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b<\/h4>\nDataList\u306f\u6700\u4e0a\u4f4d\u3058\u3083\u3042\u308a\u307e\u305b\u3093\u306d\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3057\u3066\u3044\u306a\u3044\u3002\n\u306a\u306e\u3067\u3001\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u524a\u9664\u3067\u304d\u307e\u305b\u3093\u3002\n\u4e00\u89a7\u30c7\u30fc\u30bf\u306f\u30b9\u30c6\u30fc\u30c8(state)\u3067\u306f\u306a\u304f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3(props)\u3067\u53c2\u7167\u3067\u304d\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3058\u3083\u3042\u56f0\u3063\u305f\u30fb\u30fb\u30fb\u3000\u3069\u3046\u3059\u308a\u3083\u3044\u3044\u3093\u3060\u3068\u306a\u308a\u307e\u3059\u304c\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3053\u3068\u304c\u51fa\u6765\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308a\u3083\u3044\u3044<\/h4>\n\u3067\u3001\u4f1d\u3048\u308b\u65b9\u6cd5\u3067\u3059\u304c\u3001\u3053\u308c\u306fDataLine\u30af\u30e9\u30b9\u306e onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u540c\u3058\u3067\u3001\nDataList\u30af\u30e9\u30b9\u306b\u3082 onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f5c\u308a\u3001\u305d\u3053\u3092\u7d4c\u7531\u3057\u3066\u3001\u6700\u4e0a\u4f4d\u306e\nToDoList\u30af\u30e9\u30b9\u306b\u60c5\u5831\u3092\u4f1d\u3048\u308a\u3083\u3044\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u3067\u306f\u3001\u5148\u307b\u3069\u306e\u90e8\u5206\u3092\u66f8\u304d\u63db\u3048\u3066\u307f\u307e\u3059\u3002<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \/\/\u30b9\u30c6\u30fc\u30c8\u3092\u76f4\u63a5\u524a\u9664\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308b\u3002\n this.props.onDelete(id);\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3067\u3001DataList\u30af\u30e9\u30b9\u306e\u4e0a\u4f4d\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306a\u306e\u3067\u3001\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067 DataList\u30af\u30e9\u30b9\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u969b\u306b\nonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u3092 ToDoList\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9\u3078\u8ee2\u9001\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f\u3001<\/p>\n[bash]\n class ToDoList extends React.Component{<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n \n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\n\u306a\u306b\u3092\u3057\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u3000DataList\u30af\u30e9\u30b9\u5185\u3067\u8d77\u3053\u3063\u305f\u3000onDelete\u30a4\u30d9\u30f3\u30c8\u306f\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9 handleOnDelete\u3067\u51e6\u7406\u3059\u308b\u3088\u3002\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\nToDoList\u30af\u30e9\u30b9\u306ehandleOnDelete\u3067\u306f\u3001\u3088\u3046\u3084\u304f ToDo\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\n\u3067\u304d\u308b\u306e\u3067\u3001\u3044\u3088\u3044\u3088\u3053\u3053\u3067\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u307e\u3059\u3002<\/p>\nhandleOnDelete\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3092\u898b\u3066\u3044\u305f\u3060\u304f\u3068\u30fb\u30fb\u30fb\nstate.datas\u3000\u3092\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\u3001\u305d\u306e\u30c7\u30fc\u30bf\u306eid\u304c\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3063\u3066\u304d\u305f\u3002\n\u524a\u9664\u5bfe\u8c61ID\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3001\u5bfe\u8c61\u5916\u306a\u3089\u65b0\u305f\u306a\u914d\u5217\u5909\u6570\u306bpush\u3059\u308b\u3002<\/p>\n\u305d\u3057\u3066\u3001\u5168\u30c7\u30fc\u30bf\u306e\u30eb\u30fc\u30d7\u304c\u7d42\u308f\u3063\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067<\/p>\n[bash]\n this.setState({datas: newDatas});\n[\/bash]<\/p>\n\u3068\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u66f4\u3092ReactJS\u306b\u901a\u77e5\u3057\u3066\u3044\u307e\u3059\u3002\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u7406\u89e3\u3067\u304d\u307e\u3057\u305f\u304b\uff1f\uff1f<\/p>\n\u3067\u306f\u6b21\u884c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002\n\u3044\u3088\u3044\u3088ToDo\u306e\u8ffd\u52a0\u3067\u3059\u3002<\/p>\n\u8ffd\u52a0\u306f NewToDo\u30af\u30e9\u30b9\u3067\u884c\u3044\u307e\u3059\u3002<\/p>\n[bash]\n class NewToDo extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleClick(){\n this.props.onAdd();\n }<\/p>\n handleChange(event){\n var val = event.target.value;\n this.props.onContentChange(val);\n }<\/p>\n render(){\n return (<\/p>\n\n \u30b3\u30f3\u30c6\u30f3\u30c4<\/label>\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3044\u304d\u306a\u308a\u30bd\u30fc\u30b9\u5168\u90e8\u8cbc\u308a\u4ed8\u3051\u305f\u306e\u3067 \u304e\u3087\u3063\u3068\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u30fb\u30fb\u30fb\n\u3053\u3053\u307e\u3067\u306e\u3053\u3068\u304c\u7406\u89e3\u3067\u304d\u3066\u3044\u305f\u3089\u306a\u3093\u3068\u304b\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u307e\u305a\u306f render\u30e1\u30bd\u30c3\u30c9\u304b\u3089\u8aac\u660e\u3002<\/p>\ndiv\u30bf\u30b0\u306e\u4e2d\u306blabel\uff11\u3064\u3068\u3001input\uff11\u3064\u3068button\uff11\u3064\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u307e\u3059\u3002\nlabel\u306f\u5358\u306a\u308b\u76ee\u5370\u306a\u306e\u3067\u8aac\u660e\u306f\u7701\u7565\u3059\u308b\u3068\u3057\u3066\u30fb\u30fb\u30fb<\/p>\ninput \u306fToDo\u306e\u4e2d\u8eab\u3092\u8a18\u8ff0\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u3067\u3059\u3002\nbutton \u306fToDo\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u30dc\u30bf\u30f3\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3053\u3053\u3067\u6539\u3081\u3066ToDoList\u5168\u4f53\u304c\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u304c\u4f55\u3060\u3063\u305f\u304b\u601d\u3044\u51fa\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf<\/li>\nToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024<\/li>\n\u30c7\u30fc\u30bf\u306eID\u306e\u6700\u5927\u5024<\/li>\n<\/ul>\n\u305d\u3057\u3066\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf\u306f\u3059\u3079\u3066\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9 ToDoList\u3067\u7ba1\u7406\u3055\u308c\u308b\u306e\u3067\u3057\u305f\u3002\n\u3064\u307e\u308aNewToDo\u30af\u30e9\u30b9\u306e input \u306b\u5165\u529b\u3055\u308c\u305f\u5024\u306f\u3001NewToDo\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b\u306e\u3067\u306f\u306a\u304f\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\n\u305d\u3057\u3066\u3001NewToDo\u30af\u30e9\u30b9\u306ebutton\u30af\u30ea\u30c3\u30af\u3067ToDo\u30ea\u30b9\u30c8\u306b\u8ffd\u52a0\u3057\u305f\u3044\u304c\u3001\u3053\u308c\u3082\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u3053\u3068\u3092\u901a\u77e5\u3057\u3066\u3001\u51e6\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n\u3053\u306e\u3053\u3068\u304c<\/p>\n[bash]\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n[\/bash]<\/p>\ninput\u3067\u306f onChange \u3064\u307e\u308a\u5024\u304c\uff11\u6587\u5b57\u3067\u3082\u5909\u5316\u3059\u308b\u305f\u3073\u306b\u3001\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002\n\u30dc\u30bf\u30f3\u306e\u30af\u30ea\u30c3\u30af\u306f click\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002<\/p>\n\u3053\u308c\u3060\u3051\u3067\u3059\u3002NewToDo\u30af\u30e9\u30b9\u306f\u81ea\u5206\u3067\u3059\u308b\u3053\u3068\u306f\u3001\u307b\u3068\u3093\u3069\u306a\u306b\u3082\u3042\u308a\u307e\u305b\u3093\u3002\n\u5909\u5316\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u304c\u3042\u3063\u305f\u3053\u3068\u3092\u89aa\u30af\u30e9\u30b9\u3078\u901a\u77e5\u3057\u3066\u3044\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3067\u306f\u6700\u5f8c\u3001\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e ToDoList\u30af\u30e9\u30b9\u3092\u8997\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }<\/p>\n handleContentChange(ct){\n this.setState({content: ct});\n }<\/p>\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleOnAdd()}\n onContentChange={(ct) => this.handleContentChange(ct)}\n \/>\n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u307e\u305a\u6ce8\u76ee\u3057\u3066\u3044\u305f\u3060\u304d\u305f\u3044\u306e\u306f render\u30e1\u30bd\u30c3\u30c9\u3002<\/p>\n\nNewToDo\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\nDataList\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\n<\/ul>\nNewToDo\u30af\u30e9\u30b9\u306e onAdd\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnAdd\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002\nonContentChange\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleContentChange\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnDelete\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u306e\u65b9\u306f\u3059\u3067\u306b\u8aac\u660e\u6e08\u307f\u306a\u306e\u3067\u3001NewToDo\u30af\u30e9\u30b9\u306e\u65b9\u306e\u8aac\u660e\u3092\u3057\u307e\u3059\u3002<\/p>\n[bash]\n handleContentChange(ct){\n this.setState({content: ct});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e input\uff08\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\uff09\u3067\u8d77\u3053\u3063\u305f\u5024\u306e\u5909\u5316\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\nsetState\u30e1\u30bd\u30c3\u30c9\u3067 \u30b9\u30c6\u30fc\u30c8\u3092\u5909\u66f4\u3002<\/p>\n[bash]\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e\u30dc\u30bf\u30f3\u30af\u30ea\u30c3\u30af\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\u3001\n\u6700\u5927\u5024\u3092\uff11\u52a0\u7b97\u3057\u3066\u3001ToDo\u30c7\u30fc\u30bf\u306e\u6700\u5f8c\u5c3e\u306b\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0(push)\u3002<\/p>\n\u305d\u3057\u3066\u3001setState\u3067\u3000maxId\u3068content\u3068datas \u306e\u5909\u66f4\u3092\u4f1d\u3048\nReactJS\u306b\u30ec\u30f3\u30c0\u30fc\u3092\u4f9d\u983c\u3057\u307e\u3059\u3002<\/p>\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u3088\u3046\u3084\u304fToDo\u30ea\u30b9\u30c8\u306e\u5b8c\u6210\u3067\u3059\u3002<\/p>\n\u90e8\u5206\u90e8\u5206\u3092\u5207\u308a\u53d6\u3063\u305f\u30bd\u30fc\u30b9\u3067\u898b\u3065\u3089\u304b\u3063\u305f\u3068\u601d\u3044\u307e\u3059\u306e\u3067\u3001\u5168\u30bd\u30fc\u30b9\u3092\u4ee5\u4e0b\u306b\u8cbc\u308a\u4ed8\u3051\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n[bash]<\/p>\n<\/div>\n
\u5358\u7d14\u306bToDo\u304c\u4e00\u89a7\u3055\u308c\u3066\u304a\u308a\u3001ToDo\u306e\u6a2a\u306b\u306f\u524a\u9664\u30dc\u30bf\u30f3\u304c\u3042\u308a\u3002\nToDo\u3092\u8ffd\u52a0\u3057\u305f\u3044\u5834\u5408\u306f\u4e0a\u90e8\u306e\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u6587\u5b57\u3092\u5165\u529b\u3057\n\u8ffd\u52a0\u30dc\u30bf\u30f3\u3092\u62bc\u3059\u3002<\/p>\n
\u305f\u3063\u305f\u3053\u308c\u3060\u3051\u3067\u3059\u3002\n\u307e\u3041\u3053\u306e\u305f\u3063\u305f\u3053\u308c\u3060\u3051\u304c\u7d50\u69cb\u96e3\u3057\u3044\u3093\u3067\u3059\u3051\u3069\u306d\u3002<\/p>\n
\u3067\u306f\u3044\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u307e\u305a\u306f\u521d\u671f\u5024\u3068\u306a\u308b\u5909\u6570\u3092\u3053\u3093\u306a\u611f\u3058\u3067\u7528\u610f\u3057\u307e\u3059\u3002<\/p>\n
[bash]\n var DATAS = [\n {id:1, content:”Softbank\u89e3\u7d04”},\n {id:2, content:”R-SIM10\u8cfc\u5165”},\n {id:3, content:”\u570f\u5916\u75c5\u3092\u514b\u670d\u3059\u308bSIM\u30d5\u30ea\u30fc\u30eb\u30fc\u30bf\u30fc\u30b2\u30c3\u30c8”},\n {id:4, content:”\u697d\u5929\u30e2\u30d0\u30a4\u30eb\u7533\u3057\u8fbc\u307f”}\n ]\n[\/bash]<\/p>\n
\u3053\u306e\u5909\u6570\u304cToDo\u30ea\u30b9\u30c8\u306e\u521d\u671f\u5024\u3067\u3059\u3002\n\u3067\u306f\u6b21\u3001\u753b\u9762\u30a4\u30e1\u30fc\u30b8\u304b\u3089\u3001\u4f55\u500b\u306e\u72ec\u81ea\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3057\u306a\u304d\u3083\u3044\u3051\u306a\u3044\u304b\u8003\u3048\u307e\u3057\u3087\u3046\u3002\n\u7c21\u5358\u306b\u8a00\u3063\u3066\u307e\u3059\u304c\u3001\u3053\u308c\u304b\u306a\u308a\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n
\u3068\u8003\u3048\u308b\u306e\u3067\u3059\u3002\u305d\u306e\u30d1\u30fc\u30c4\u304c class\u3067\u3042\u308a\u3001\u305d\u306e class\u304c\u72ec\u81ea\u30bf\u30b0\u306a\u3093\u3067\u3059\u306d\u3002<\/p>\n
ToDo\u30ea\u30b9\u30c8\u306f\u81f3\u3063\u3066\u30b7\u30f3\u30d7\u30eb\u3002\nToDo\u306e\u4e00\u89a7\u3068\u306a\u308b\u30d1\u30fc\u30c4\u3002\u3053\u308c\u21d3\u21d3\u21d3\u3002<\/p>\n
<\/a><\/p>\n\u3068ToDo\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u30d1\u30fc\u30c4\u3002\u3053\u308c\u21d3\u21d3\u21d3\u3002<\/p>\n<\/a><\/p>\n\u305d\u3057\u3066ToDo\u306e\u4e00\u89a7\u306e\u4e00\u884c\u3092\u69cb\u6210\u3059\u308b\u30d1\u30fc\u30c4\u3002\u3053\u308c\u21d3\u21d3\u21d3\u3002<\/p>\n<\/a><\/p>\n\u30d1\u30fc\u30c4\u306f\u6c7a\u307e\u308a\u307e\u3057\u305f\u306e\u3067\u3001\u3053\u306e\u30d1\u30fc\u30c4\u3092\u30af\u30e9\u30b9\u3068\u3057\u3066\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3059\u3002<\/p>\n\u307e\u305a\u6700\u521d\u306e\u30d1\u30fc\u30c4 ToDo\u4e00\u89a7\u3092\u3000DataList\u3002\n\u6b21\u306bToDo\u3092\u8ffd\u52a0\u3059\u308b\u30d1\u30fc\u30c4\u3092 NewToDo\u3002\nToDo\u306e\u4e00\u884c\u3092\u69cb\u6210\u3059\u308b\u30d1\u30fc\u30c4\u3092\u3000DataLine\n\u6700\u5f8c\u306b\u3053\u308c\u3089\u5168\u90e8\u3092\u5305\u542b\u3059\u308b ToDoList\u3000\u3068\u3057\u307e\u3059\u3002<\/p>\n\u56f3\u3067\u66f8\u304f\u3068\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/a><\/p>\n\u3067\u306f\u307e\u305aToDo\u4e00\u89a7\u3067\u3042\u308b\u3000DataList\u3092\u30af\u30e9\u30b9\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n class DataList extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleOnDelete(id){\n this.props.onDelete(id);\n }<\/p>\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push( this.handleOnDelete(id)}\/>);\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u306a\u3093\u306e\u3053\u3068\u304b\u7406\u89e3\u3067\u304d\u307e\u3059\u304b\uff1f \u666e\u901a\u96e3\u3057\u3044\u306a\u3041\u3068\u601d\u3044\u307e\u3059\u3088\u306d\u3002<\/p>\n\u30af\u30e9\u30b9\u5b9a\u7fa9\u306e\u8aac\u660e\u306f HelloWorld\u3092\u51fa\u529b\u3059\u308b\u90e8\u5206\u3067\u3084\u3063\u305f\u306e\u3067\u5272\u611b\u3057\u307e\u3059\u3002<\/p>\n\u3067\u306f \u6b21\u306econstructor\u3000\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb\n\u8981\u306f\u30af\u30e9\u30b9\u306e\u521d\u671f\u5316\u51e6\u7406\u3092\u3053\u3053\u3067\u884c\u3044\u307e\u3059\u3088\u3000\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb\n\u521d\u671f\u5316\u3067\u3059\u308b\u3053\u3068\u306f\u7279\u306b\u306a\u3044\u306e\u3067\u3001\u304a\u6c7a\u307e\u308a\u306e\u304a\u307e\u3058\u306a\u3044 super(props)\u3060\u3051\u3092\u8a18\u8ff0\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n[bash]\n constructor(props){\n super(props);\n }\n[\/bash]<\/p>\n\u6b21\u306e handleOnDelete \u3053\u308c\u306a\u3093\u3067\u3059\u304c\u30fb\u30fb \u5fc5\u8981\u3067\u3059\u304c\u3001\u3053\u306e\u8aac\u660e\u306f\u5f8c\u56de\u3057\u306b\u3057\u307e\u3059\u3002<\/p>\n[bash]\n handleOnDelete(id){\n this.props.onDelete(id);\n }\n[\/bash]<\/p>\n\u6700\u5f8c\u306b render\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\nHelloWorld\u3067\u3082\u3084\u3063\u305f\u3088\u3046\u306b\u3001render\u30e1\u30bd\u30c3\u30c9\u3067\u3001\u3053\u306e\u30af\u30e9\u30b9\u304c\u51fa\u529b\u3059\u308b\nHTML\u30bf\u30b0\u3092\u69cb\u7bc9\u3059\u308b\u3093\u3067\u3059\u3002<\/p>\nToDo\u306e\u4e00\u89a7\u306a\u3093\u3067\u3001\u3053\u306e\u30af\u30e9\u30b9\u3092\u4f5c\u308b\u3068\u304d\u306bToDo\u306e\u4e00\u89a7\u3068\u306a\u308b\u30c7\u30fc\u30bf\u3092\u5f15\u304d\u6e21\u3057\u3066\u3082\u3089\u3046\u3053\u3068\u3092\u60f3\u5b9a\u3057\u307e\u3059\u3002\n\u305d\u308c\u304c\u3000this.props.datas\u3000\u3068\u3044\u3046\u5909\u6570\u3067\u53c2\u7167\u3067\u304d\u307e\u3059\u3002<\/p>\nrender\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067\u306f\u3001\u3053\u306e\u5909\u6570\u3092\u30eb\u30fc\u30d7\u3067\u56de\u3057\u3066\u3001 dlist\u3068\u3044\u3046\u5909\u6570\u306b push\u3057\u3066\u3044\u3063\u3066\u307e\u3059\u3002\npush\u3059\u308b\u5185\u5bb9\u306f\u3001ToDo\u306e\uff11\u884c\u3092\u69cb\u6210\u3059\u308b DataLine\u30bf\u30b0\uff08\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u3067\u3059\u3002<\/p>\n\u305d\u3057\u3066 render\u30e1\u30bd\u30c3\u30c9\u304c\u30ea\u30bf\u30fc\u30f3\u3059\u308b\u5185\u5bb9\u306f <div>\u30bf\u30b0\u306e\u4e2d\u306b\u4e0a\u8a18\u306e\u914d\u5217\u5909\u6570\u3092\u7d44\u307f\u8fbc\u3093\u3060\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push( this.handleOnDelete(id)}\/>);\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n[\/bash]<\/p>\n\u809d\u5fc3\u306a\u3053\u3068\u3092\u5fd8\u308c\u3066\u3044\u307e\u3057\u305f\u3002\n\uff13\u3064\u306e\u30d1\u30fc\u30c4\u3092\u5305\u542b\u3059\u308b\u4e00\u756a\u5927\u304d\u306a\u30d1\u30fc\u30c4\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u308c\u3092ToDoList\u30af\u30e9\u30b9\u3068\u3057\u307e\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306e\u30bd\u30fc\u30b9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);<\/p>\n this.state = {\n datas: props.datas\n }\n }<\/p>\n render(){\n return (<\/p>\n\n \n \n <\/div>\n );\n }\n }\n[\/bash]<\/p>\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001NewToDo\u30bf\u30b0\u3068DataList\u30bf\u30b0\u3092\u69cb\u7bc9\u3057\u3066\u3044\u308b\u306e\u304c\u89e3\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u305d\u3057\u3066 DataList\u30bf\u30b0\u306e datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b this.state.datas\u3000\u3092\u6e21\u3057\u3066\u3044\u307e\u3059\u3002\nthis.state.datas\u3000\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\uff1f\nstate\u3068\u306f\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u52d5\u7684\u306a\u5909\u6570\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\nReactJS\u3067\u306f state\u306e\u5024\u304c\u5909\u66f4\u3055\u308c\u308b\u3068\u3001\u81ea\u52d5\u7684\u306b\u305d\u306estate\u306e\u5024\u304c\u6307\u3057\u793a\u3059 HTML\u3092\u66f8\u304d\u63db\u3048\u308b\u4ed5\u7d44\u307f<\/h4>\n\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n\u3067\u3001\u5b9f\u969b\u306b\u3053\u3053\u3067\u306f\u3000this.state.datas\u3000\u306b\u4f55\u304c\u5165\u3063\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u6700\u521d\u306e\u65b9\u3067\u8aac\u660e\u3057\u305f\nToDo\u30ea\u30b9\u30c8\u306e\u4e2d\u8eab\u3067\u3042\u308b DATAS\u5909\u6570\u304c\u5165\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u3053\u308c\u3067\u306f\u8a00\u8449\u8db3\u3089\u305a\u3067\u3059\u306d\u3002\nToDoList\u30af\u30e9\u30b9\u304c\u5168\u30af\u30e9\u30b9\u306e\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u3067\u3042\u308b\u306e\u3067\u3001\nReactDOM.render \u3067\u306f\u3000ToDoList\u30af\u30e9\u30b9\u3092\u3000render\u3057\u3066\u3082\u3089\u3044\u307e\u3059\u3002\n\u30bd\u30fc\u30b9\u3067\u66f8\u304f\u3068\u3053\u3093\u306a\u611f\u3058\u3002<\/p>\n[bash]\nReactDOM.render(\n ,\n document.getElementById(“root”)\n);<\/p>\n[\/bash]<\/p>\n\u3067\u3001\u3053\u308c\u3060\u3051\u3060\u3068\u3001ToDoList\u306e\u521d\u671f\u5024\u3092\u6e21\u305b\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u306a\u308b\u306e\u3067\u3001\n\u6b63\u3057\u304f\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\u8981\u306f\u30af\u30e9\u30b9\u5185\u3067\u4f7f\u3044\u305f\u3044\u30c7\u30fc\u30bf\u306f \u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u305d\u3046\u306d\u3002\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u30c7\u30fc\u30bf\u3068\u306f\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u3082\u306e\u306a\u306e\u3067\u3000\uff5b\uff5d\u3000\u3067\u62ec\u3063\u3066\u6e21\u305d\u3046\u306d\u3068\u3044\u3046\u30eb\u30fc\u30eb\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n var DATAS = [\n {id:1, content:”Softbank\u89e3\u7d04”},\n {id:2, content:”R-SIM10\u8cfc\u5165”},\n {id:3, content:”\u570f\u5916\u75c5\u3092\u514b\u670d\u3059\u308bSIM\u30d5\u30ea\u30fc\u30eb\u30fc\u30bf\u30fc\u30b2\u30c3\u30c8”},\n {id:4, content:”\u697d\u5929\u30e2\u30d0\u30a4\u30eb\u7533\u3057\u8fbc\u307f”}\n ]<\/p>\n ReactDOM.render(\n ,\n document.getElementById(“root”)\n );\n[\/bash]<\/p>\n\u3067\u3001\u307e\u3060\u3053\u308c\u3067\u3082 DataList\u30af\u30e9\u30b9\u306e\u3000this.props.datas\u3000\u306b DATAS\u306e\u5024\u304c\u6e21\u3063\u3066\u3044\u304f\u4ed5\u7d44\u307f\u304c\u8aac\u660e\u3067\u304d\u3066\u3044\u307e\u305b\u3093\u306d\u3002\nDataList\u30af\u30e9\u30b9\u306f\u3000ToDoList\u30af\u30e9\u30b9\u306e\u5b50\u4f9b\u3067\u3059\u3002\u3064\u307e\u308a DataList\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\n\u4f5c\u6210\u3055\u308c\u3001\u305d\u306e\u6642\u306bDataList\u30af\u30e9\u30b9\u304c\u6271\u3046\u5909\u6570\u3068\u3057\u3066 datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u3092\u6e21\u3059\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u65e5\u672c\u8a9e\u3067\u66f8\u304f\u3068\u3084\u3084\u3053\u3057\u3044\u3067\u3059\u306d\u3002\n\u3064\u307e\u308a\u306f\u3001ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3053\u3068\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n this.state = {\n datas: props.datas\n }\n }<\/p>\n render(){\n return (<\/p>\n\n \n \n <\/div>\n );\n }\n }<\/p>\n[\/bash]<\/p>\nrender\u30e1\u30bd\u30c3\u30c9\u306e\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f\u5909\u6570\u306f\u3001 \u30af\u30e9\u30b9\u5185\u3067 props\uff08\u30d7\u30ed\u30d1\u30c6\u30a3\uff09\u3068\u3057\u3066\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306f datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f DATAS\u5909\u6570\u306e\u4e2d\u8eab\u3092\u81ea\u8eab\u306e\u30af\u30e9\u30b9\u306e state\u3068\u3057\u3066\u7ba1\u7406\u3057\u3088\u3046\u3068\u3057\u307e\u3059\u3002\n\u3053\u308c\u304c constructor\u306e\u4e2d\u306b\u3042\u308b\u3002<\/p>\nthis.state = {datas: this.props.datas};<\/p>\n\u3053\u308c\u3067 ToDoList\u30af\u30e9\u30b9 \u5185\u3067\u306f this.state.datas \u3067 DATAS\u306e\u5185\u5bb9\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3084\u3063\u3068\u3053\u308c\u3067 DataList\u306b DATAS\u306e\u5024\u304c\u6e21\u308b\u3053\u3068\u304c\u8aac\u660e\u3067\u304d\u307e\u3057\u305f\u304b\u306d\u30fb\u30fb\u30fb<\/p>\n\u3067\u306f\u3001\u6b21\u306fDataList\u306e render\u30e1\u30bd\u30c3\u30c9\u3067ToDo\u306e\u4e00\u884c\u4e00\u884c\u3092\u69cb\u6210\u3059\u308bDataLine\u30af\u30e9\u30b9\u3092\u4f5c\u3063\u3066\u3044\u308b\u3068\u3053\u308d\u3092\n\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push();\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n[\/bash]<\/p>\n\u914d\u5217\u5909\u6570 dlist\u306b DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092push\u3057\u3066\u3044\u3063\u3066\u307e\u3059\u306d\u3002\n\u305d\u3057\u3066\u3001DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e data\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u306e\uff11\u884c\u306e\u5024\n\u3064\u307e\u308aToDo\u4e00\u4ef6\u3092\u30c7\u30fc\u30bf\u3068\u3057\u3066\u6e21\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306f this.props.data\u3067\u3053\u306e\u5024\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nkey\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b\u3064\u3044\u3066\u3067\u3059\u304c\u3001ReactJS\u3067\u306f\u7e70\u308a\u8fd4\u3057\u30eb\u30fc\u30d7\u3067\u540c\u3058\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u751f\u6210\n\u3059\u308b\u3068\u304d\u306f\u3001\uff11\u3064\uff11\u3064\u3092\u30e6\u30cb\u30fc\u30af\u306b\u3059\u308b\u5024\u3092\u30ad\u30fc(key)\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\n\u3068\u3044\u3046\u30eb\u30fc\u30eb\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u3053\u3053\u3067\u306f DATAS\u306e\u4e2d\u306e\u30c7\u30fc\u30bf\u306e id\u3092\u30ad\u30fc\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\u3067\u306f\u3001ToDo\u306e\uff11\u4ef6\u306b\u3042\u305f\u308bDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u306a\u306b\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb<\/p>\n[bash]\n class DataLine extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n render(){\n return (<\/p>\n\n \u524a\u9664<\/button>\n {this.props.data.id} — {this.props.data.content}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u306e\u3088\u3046\u306bDataLine\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u30dc\u30bf\u30f3\uff11\u3064\u3068\u3001\u6587\u5b57\u5217\u3068\u3057\u3066\u306e\u30c7\u30fc\u30bf\u306eid\u3068content\u3092\u51fa\u529b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\u3053\u3053\u307e\u3067\u3067\u3001\u3088\u3046\u3084\u304f\u3001ToDoList\u3067\u524a\u9664\u30dc\u30bf\u30f3\u4ed8\u304d\u306e\u4e00\u89a7\u304c\u3067\u304d\u307e\u3057\u305f\u3002\n\u3067\u3082\u3001\u3053\u308c\u3058\u3083\u307e\u3060ToDo\u3082\u8ffd\u52a0\u3067\u304d\u306a\u3044\u3057\u3001\u524a\u9664\u3082\u3067\u304d\u306a\u3044\u3002<\/p>\n\u307e\u305a\u306f\u3001\u524a\u9664\u306e\u65b9\u306e\u8aac\u660e\u306b\u5165\u308a\u307e\u3057\u3087\u3046\u3002\n\u3067\u3001\u524a\u9664\u3092\u8003\u3048\u308b\u524d\u306b\u3001ReactJS\u3067\u30a2\u30d7\u30ea\u3092\u69cb\u7bc9\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u8aac\u660e\u3057\u3066\u304a\u304d\u307e\u3059\u3002\n\u30a2\u30d7\u30ea\u306f\u3069\u3093\u306a\u30d1\u30fc\u30c4\u3067\u69cb\u6210\u3055\u308c\u308b\u304b\u30fb\u30fb\u30fb\u3001\u3053\u308c\u306f\u3082\u3046\u8aac\u660e\u6e08\u307f\u3067\u3059\u306d\u3002\n\u6b21\u306b\u30a2\u30d7\u30ea\u3067\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5024\u3067\u7ba1\u7406\u3057\u3066\u3044\u304b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\u306f\u4f55\u304b\u30fb\u30fb\u30fb\n\u3053\u308c\u3092\u8003\u3048\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5024\u3067\u3001\u7ba1\u7406\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\uff1d\u30b9\u30c6\u30fc\u30c8(state\uff09\n<\/h4>\n\u306a\u3093\u3067\u3059\u3002\n\u305d\u3057\u3066\u3001\u3082\u3046\u3061\u3087\u3063\u3068\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u30fb\u30fb\u30fb\u3001\u4ed6\u306e\u5024\u304b\u3089\u8a08\u7b97\u3057\u305f\u308a\u3057\u3066\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u5024\u306f\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u306f\u7ba1\u7406\u3057\u307e\u305b\u3093\u3002\n\u3069\u3046\u8a08\u7b97\u3057\u3088\u3046\u3068\u3057\u3066\u3082\u3001\u3069\u3053\u304b\u3089\u3082\u5c0e\u304d\u51fa\u305b\u306a\u3044\u5909\u5316\u3059\u308b\u5024\u306e\u307f\u3092\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\u3055\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306b\u304a\u3044\u3066\u30b9\u30c6\u30fc\u30c8\u306f\u306a\u306b\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb<\/p>\n\u307e\u305a\u5f53\u7136\u3067\u3059\u304cToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf\u3067\u3059\u306d\u3002\n\u305d\u3057\u3066\u3082\u3046\u3072\u3068\u3064\u3001ToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024\u3067\u3059\u3002\n\u305d\u3057\u3066\u305d\u3057\u3066\u3001\u6700\u5f8c\u306b\u3082\u3046\u3072\u3068\u3064\u3002ToDo\u30ea\u30b9\u30c8\uff11\u4ef6\uff11\u4ef6\u306f\u30e6\u30cb\u30fc\u30af\u306a\u3082\u306e\u306a\u306e\u3067\u3001\nToDo\uff11\u4ef6\u306b\u5bfe\u3057\u3066\uff11\u3064\u306eID\u3092\u6301\u3061\u307e\u3059\u3002\u305d\u306eID\u306f\u91cd\u8907\u3057\u3066\u306f\u3044\u3051\u306a\u3044\u306e\u3067\u3000ID\u306e\u6700\u5927\u5024\u3092\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\u3067\u3001\u307e\u305f\u307e\u305f\u3053\u3053\u3082\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb\u30fb\n\u30b9\u30c6\u30fc\u30c8\u3092\u8ab0\u304c\u3001\u3064\u307e\u308a\u3069\u306e\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u304b\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb<\/p>\n\u4e00\u756a\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306b\u3042\u308b\u30af\u30e9\u30b9\u304c\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3059\u308b<\/h4>\n\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u3001\u672c\u5f53\u306f\u3053\u308c\u306f\u5618\u3060\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u6163\u308c\u306a\u3044\u3046\u3061\u306f\n\u4e00\u756a\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u308b\u306e\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002\n\u3064\u307e\u308a\u4eca\u56de\u306eToDo\u30ea\u30b9\u30c8\u3067\u8a00\u3046\u3068\u3000ToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }\n[\/bash]<\/p>\n\u3088\u3063\u3066 ToDoList\u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u4e0a\u8a18\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\uff08\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u306f\u30b9\u30c6\u30fc\u30c8\u3067\u7ba1\u7406\u3059\u308b\u5024\u306e\u521d\u671f\u5024\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\uff09<\/p>\nthis.state = \uff5b\u30b9\u30c6\u30fc\u30c8\u3067\u7ba1\u7406\u3059\u308b\u5909\u6570\u7fa4\uff5d<\/h4>\n\u305d\u3057\u3066\u3001 this.state = \u3068\u8a18\u8ff0\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u8a2d\u5b9a\u3067\u304d\u308b\u306e\u306f\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3060\u3051\u3060\u3068\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nReactJS\u3067\u306f\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u304c\u5909\u5316\u3059\u308b\u3068\u5fc5\u8981\u306a\u3068\u3053\u308d\u3060\u3051\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3092\u81ea\u52d5\u3067\u884c\u3044\u307e\u3059\u3002\n\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u30bb\u30c3\u30c8\u3057\u3066\u81ea\u52d5\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u306b\u306f\n\u30af\u30e9\u30b9\u306e\u3000setState\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002\n\u4f8b\u3048\u3070\u3001ToDo\u30ea\u30b9\u30c8\u306e\u6700\u5927ID(maxId)\u3092\u5909\u5316\u3055\u305b\u3088\u3046\u3068\u3059\u308b\u306a\u3089\u3070\n\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3059\u308b\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067<\/p>\n[bash]\nthis.setState({maxId: xxxx});\n[\/bash]<\/p>\n\u3068\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nID\u306e\u6700\u5927\u5024\u3092\u5909\u3048\u3066\u3082\u3001\u753b\u9762\u4e0a\u5909\u5316\u3059\u308b\u5fc5\u8981\u306e\u3042\u308b\u3068\u3053\u308d\u306f\u306a\u3044\u306e\u3067ReactJS\u306f\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u306e\u307f\u3092\u5909\u5316\u3055\u305b\u3001\u306a\u306b\u3082\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306f\u884c\u3044\u307e\u305b\u3093\u3002<\/p>\nToDo\u30ea\u30b9\u30c8\u304b\u3089\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u3053\u3068\u3092\u8003\u3048\u308b\u3068\u30fb\u30fb\u30fb\nToDoList\u30af\u30e9\u30b9\u5185\u306e\u4f55\u3089\u304b\u306e\u30e1\u30bd\u30c3\u30c9\u3067<\/p>\n[bash]\nvar newDatas = [];\nvar i;<\/p>\nfor (i = 0 ; i < this.state.datas.length ; i++){\n var data = this.state.datas[i];\n if (data.id != \u524a\u9664\u3059\u308bID){\n newDatas.push(data);\n }\n}<\/p>\nthis.setState({datas: newDatas});\n[\/bash]<\/p>\n\u3068\u3057\u3066\u3084\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\nReactJS\u304c\u7ba1\u7406\u3059\u308b datas\u30b9\u30c6\u30fc\u30c8\u304c\u5909\u5316\u3059\u308b\u3068\u3001\u305d\u306e\u5909\u6570\u306e\u5024\u3092\u4f7f\u3063\u3066\n\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u90e8\u5206\u304c\u81ea\u52d5\u7684\u306b\u8abf\u6574\u3055\u308c\u308b\u306e\u3067\u3059\u3002\n\u4f8b\u3048\u3070 jQuery\u306a\u3093\u304b\u3067\u540c\u3058\u3088\u3046\u306a\u3053\u3068\u3092\u3057\u3088\u3046\u3068\u601d\u3048\u3070\u3001\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u306e\u30bf\u30b0\u306e\u5b50\u4f9b\u3092\uff08ToDo\uff11\u4ef6\uff09\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\n\u4e0d\u8981\u306a\u884c\u306eHTML\u30bf\u30b0\u3092 remove\u3059\u308b\u306a\u3069\u3067\u3059\u306d\u3002<\/p>\n\u3067\u306f\u6b21\u306b\u30da\u30fc\u30b8\u4e0a\u3067\u8d77\u3053\u308b\u30a4\u30d9\u30f3\u30c8\u306f\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u6271\u3046\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\n\u307e\u305a\u3001ToDo\u4e00\u4ef6\u3092\u524a\u9664\u3059\u308b\u51e6\u7406\u3001\u3064\u307e\u308aToDo\u30ea\u30b9\u30c8\u306e\u5de6\u5074\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308b\n\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u305f\u51e6\u7406\u3092\u3069\u3053\u306b\u8a18\u8ff0\u3057\u3066\u3001\u30af\u30ea\u30c3\u30af\u306b\u3088\u3063\u3066\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u306fDataLine\u30af\u30e9\u30b9\u5185\u3067\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\n\u5f53\u7136\u30af\u30ea\u30c3\u30af\u30a4\u30d9\u30f3\u30c8\u306e\u51e6\u7406\u306fDataLine\u30af\u30e9\u30b9\u5185\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\u3069\u3046\u66f8\u304f\u304b\u3068\u3044\u3046\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class DataLine extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleClick()}>\u524a\u9664<\/button>\n {this.props.data.id} — {this.props.data.content}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u3053\u306f\u7d50\u69cb\u666e\u901a\u306a\u306e\u3067\u3059\u304c\u3001\u524a\u9664\u30dc\u30bf\u30f3\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u3044\u308b\u90e8\u5206\u3067\nonClick\u30a4\u30d9\u30f3\u30c8\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nReactJS\u3067\u306f onclick<\/strong>\u3067\u306f\u306a\u304f\u3001onClick<\/strong>\u3067\u3059\u3002\n\u305d\u3057\u3066onClick\u3092\u51e6\u7406\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e handleClick\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u307e\u3059\u3002<\/p>\n\u3067\u3001handelClick\u30e1\u30bd\u30c3\u30c9\u5185\u306e\u8a18\u8ff0\u3092\u898b\u3066\u307f\u308b\u3068<\/p>\n[bash]\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }\n[\/bash]<\/p>\n\u3068\u306a\u3063\u3066\u3044\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306edatas\u3000\u3092\u524a\u9664\u3057\u3066\u3044\u307e\u305b\u3093\u306d\u3002\n\u306a\u305c\u304b\u3068\u3044\u3046\u3068\u3001\u4eca\u56de\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u306f\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9ToDoList\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3057\u3066\u3044\u308b\u304b\u3089\u30fb\u30fb\n\u305d\u306e\u5909\u6570\u3092\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u3001\u524a\u9664\u3067\u304d\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3069\u3046\u3059\u308b\u304b\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u51e6\u7406\u3067\u304d\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306b\u304a\u9858\u3044\u3059\u308c\u3070\u826f\u3044<\/h4>\n[bash]\nthis.props.onDelete(this.props.data.id);\n[\/bash] <\/p>\n\u3053\u308c\u306f\u3001\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b onDelete\u3068\u3044\u3046\u306e\u3092\u4f5c\u308b\u3068\u3044\u3046\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\n\u305d\u3057\u3066\u305d\u308c\u306f\u5909\u6570\u3092\u7ba1\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u306f\u306a\u304f\u3066\u3001\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3060\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u96e3\u3057\u3044\u3067\u3059\u306d\u3002\u304b\u306a\u308a\u9811\u5f35\u3063\u3066\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nDataLine\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3042\u308b\u3002\n\u3067\u30fb\u30fb\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u3092DataLine\u30af\u30e9\u30b9\u3088\u308a\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u51e6\u7406\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308b\u304b\u3068\u3044\u3046\u3068\nDataLine\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u90e8\u5206\u306b\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3068\u3057\u3066\u3001\u4e0a\u4f4d\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002\n\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \u30b9\u30c6\u30fc\u30c8\u3092\u306a\u3093\u3068\u304b\u524a\u9664\u3057\u3088\u3046\u3068\u52aa\u529b\u3059\u308b\u3002\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u4eca\u56de\u306e\u4f8b\u3067\u8a00\u3046\u3068\u3001DataLine\u306e\uff11\u3064\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306f DataList\u30af\u30e9\u30b9\u306a\u306e\u3067\u30fb\u30fb\u30fb\n\u30c7\u30fc\u30bf\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u5909\u6570\u3092\u53c2\u7167\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\u51fa\u6765\u306a\u3044\uff1f\uff1f\uff1f\uff1f<\/p>\n\u3068\u601d\u3046\u65b9\u3082\u3044\u3089\u3063\u3057\u3083\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\nDataList\u306f\u30c7\u30fc\u30bf\u306e\u4e00\u89a7\u3092\u51fa\u529b\u3057\u3066\u308b\u3093\u3060\u304b\u3089\u3001\u5909\u6570\u306e\u5024\u3092\u524a\u9664\u3067\u304d\u308b\u3058\u3083\u3093\u3002\n\u305d\u3046\u601d\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002<\/p>\n\u3067\u3082 ReactJS\u306e\u9244\u5247<\/p>\n\u30b9\u30c6\u30fc\u30c8\u306f\u6700\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b<\/h4>\nDataList\u306f\u6700\u4e0a\u4f4d\u3058\u3083\u3042\u308a\u307e\u305b\u3093\u306d\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3057\u3066\u3044\u306a\u3044\u3002\n\u306a\u306e\u3067\u3001\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u524a\u9664\u3067\u304d\u307e\u305b\u3093\u3002\n\u4e00\u89a7\u30c7\u30fc\u30bf\u306f\u30b9\u30c6\u30fc\u30c8(state)\u3067\u306f\u306a\u304f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3(props)\u3067\u53c2\u7167\u3067\u304d\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3058\u3083\u3042\u56f0\u3063\u305f\u30fb\u30fb\u30fb\u3000\u3069\u3046\u3059\u308a\u3083\u3044\u3044\u3093\u3060\u3068\u306a\u308a\u307e\u3059\u304c\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3053\u3068\u304c\u51fa\u6765\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308a\u3083\u3044\u3044<\/h4>\n\u3067\u3001\u4f1d\u3048\u308b\u65b9\u6cd5\u3067\u3059\u304c\u3001\u3053\u308c\u306fDataLine\u30af\u30e9\u30b9\u306e onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u540c\u3058\u3067\u3001\nDataList\u30af\u30e9\u30b9\u306b\u3082 onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f5c\u308a\u3001\u305d\u3053\u3092\u7d4c\u7531\u3057\u3066\u3001\u6700\u4e0a\u4f4d\u306e\nToDoList\u30af\u30e9\u30b9\u306b\u60c5\u5831\u3092\u4f1d\u3048\u308a\u3083\u3044\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u3067\u306f\u3001\u5148\u307b\u3069\u306e\u90e8\u5206\u3092\u66f8\u304d\u63db\u3048\u3066\u307f\u307e\u3059\u3002<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \/\/\u30b9\u30c6\u30fc\u30c8\u3092\u76f4\u63a5\u524a\u9664\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308b\u3002\n this.props.onDelete(id);\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3067\u3001DataList\u30af\u30e9\u30b9\u306e\u4e0a\u4f4d\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306a\u306e\u3067\u3001\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067 DataList\u30af\u30e9\u30b9\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u969b\u306b\nonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u3092 ToDoList\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9\u3078\u8ee2\u9001\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f\u3001<\/p>\n[bash]\n class ToDoList extends React.Component{<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n \n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\n\u306a\u306b\u3092\u3057\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u3000DataList\u30af\u30e9\u30b9\u5185\u3067\u8d77\u3053\u3063\u305f\u3000onDelete\u30a4\u30d9\u30f3\u30c8\u306f\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9 handleOnDelete\u3067\u51e6\u7406\u3059\u308b\u3088\u3002\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\nToDoList\u30af\u30e9\u30b9\u306ehandleOnDelete\u3067\u306f\u3001\u3088\u3046\u3084\u304f ToDo\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\n\u3067\u304d\u308b\u306e\u3067\u3001\u3044\u3088\u3044\u3088\u3053\u3053\u3067\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u307e\u3059\u3002<\/p>\nhandleOnDelete\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3092\u898b\u3066\u3044\u305f\u3060\u304f\u3068\u30fb\u30fb\u30fb\nstate.datas\u3000\u3092\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\u3001\u305d\u306e\u30c7\u30fc\u30bf\u306eid\u304c\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3063\u3066\u304d\u305f\u3002\n\u524a\u9664\u5bfe\u8c61ID\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3001\u5bfe\u8c61\u5916\u306a\u3089\u65b0\u305f\u306a\u914d\u5217\u5909\u6570\u306bpush\u3059\u308b\u3002<\/p>\n\u305d\u3057\u3066\u3001\u5168\u30c7\u30fc\u30bf\u306e\u30eb\u30fc\u30d7\u304c\u7d42\u308f\u3063\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067<\/p>\n[bash]\n this.setState({datas: newDatas});\n[\/bash]<\/p>\n\u3068\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u66f4\u3092ReactJS\u306b\u901a\u77e5\u3057\u3066\u3044\u307e\u3059\u3002\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u7406\u89e3\u3067\u304d\u307e\u3057\u305f\u304b\uff1f\uff1f<\/p>\n\u3067\u306f\u6b21\u884c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002\n\u3044\u3088\u3044\u3088ToDo\u306e\u8ffd\u52a0\u3067\u3059\u3002<\/p>\n\u8ffd\u52a0\u306f NewToDo\u30af\u30e9\u30b9\u3067\u884c\u3044\u307e\u3059\u3002<\/p>\n[bash]\n class NewToDo extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleClick(){\n this.props.onAdd();\n }<\/p>\n handleChange(event){\n var val = event.target.value;\n this.props.onContentChange(val);\n }<\/p>\n render(){\n return (<\/p>\n\n \u30b3\u30f3\u30c6\u30f3\u30c4<\/label>\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3044\u304d\u306a\u308a\u30bd\u30fc\u30b9\u5168\u90e8\u8cbc\u308a\u4ed8\u3051\u305f\u306e\u3067 \u304e\u3087\u3063\u3068\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u30fb\u30fb\u30fb\n\u3053\u3053\u307e\u3067\u306e\u3053\u3068\u304c\u7406\u89e3\u3067\u304d\u3066\u3044\u305f\u3089\u306a\u3093\u3068\u304b\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u307e\u305a\u306f render\u30e1\u30bd\u30c3\u30c9\u304b\u3089\u8aac\u660e\u3002<\/p>\ndiv\u30bf\u30b0\u306e\u4e2d\u306blabel\uff11\u3064\u3068\u3001input\uff11\u3064\u3068button\uff11\u3064\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u307e\u3059\u3002\nlabel\u306f\u5358\u306a\u308b\u76ee\u5370\u306a\u306e\u3067\u8aac\u660e\u306f\u7701\u7565\u3059\u308b\u3068\u3057\u3066\u30fb\u30fb\u30fb<\/p>\ninput \u306fToDo\u306e\u4e2d\u8eab\u3092\u8a18\u8ff0\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u3067\u3059\u3002\nbutton \u306fToDo\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u30dc\u30bf\u30f3\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3053\u3053\u3067\u6539\u3081\u3066ToDoList\u5168\u4f53\u304c\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u304c\u4f55\u3060\u3063\u305f\u304b\u601d\u3044\u51fa\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf<\/li>\nToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024<\/li>\n\u30c7\u30fc\u30bf\u306eID\u306e\u6700\u5927\u5024<\/li>\n<\/ul>\n\u305d\u3057\u3066\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf\u306f\u3059\u3079\u3066\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9 ToDoList\u3067\u7ba1\u7406\u3055\u308c\u308b\u306e\u3067\u3057\u305f\u3002\n\u3064\u307e\u308aNewToDo\u30af\u30e9\u30b9\u306e input \u306b\u5165\u529b\u3055\u308c\u305f\u5024\u306f\u3001NewToDo\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b\u306e\u3067\u306f\u306a\u304f\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\n\u305d\u3057\u3066\u3001NewToDo\u30af\u30e9\u30b9\u306ebutton\u30af\u30ea\u30c3\u30af\u3067ToDo\u30ea\u30b9\u30c8\u306b\u8ffd\u52a0\u3057\u305f\u3044\u304c\u3001\u3053\u308c\u3082\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u3053\u3068\u3092\u901a\u77e5\u3057\u3066\u3001\u51e6\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n\u3053\u306e\u3053\u3068\u304c<\/p>\n[bash]\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n[\/bash]<\/p>\ninput\u3067\u306f onChange \u3064\u307e\u308a\u5024\u304c\uff11\u6587\u5b57\u3067\u3082\u5909\u5316\u3059\u308b\u305f\u3073\u306b\u3001\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002\n\u30dc\u30bf\u30f3\u306e\u30af\u30ea\u30c3\u30af\u306f click\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002<\/p>\n\u3053\u308c\u3060\u3051\u3067\u3059\u3002NewToDo\u30af\u30e9\u30b9\u306f\u81ea\u5206\u3067\u3059\u308b\u3053\u3068\u306f\u3001\u307b\u3068\u3093\u3069\u306a\u306b\u3082\u3042\u308a\u307e\u305b\u3093\u3002\n\u5909\u5316\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u304c\u3042\u3063\u305f\u3053\u3068\u3092\u89aa\u30af\u30e9\u30b9\u3078\u901a\u77e5\u3057\u3066\u3044\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3067\u306f\u6700\u5f8c\u3001\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e ToDoList\u30af\u30e9\u30b9\u3092\u8997\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }<\/p>\n handleContentChange(ct){\n this.setState({content: ct});\n }<\/p>\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleOnAdd()}\n onContentChange={(ct) => this.handleContentChange(ct)}\n \/>\n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u307e\u305a\u6ce8\u76ee\u3057\u3066\u3044\u305f\u3060\u304d\u305f\u3044\u306e\u306f render\u30e1\u30bd\u30c3\u30c9\u3002<\/p>\n\nNewToDo\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\nDataList\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\n<\/ul>\nNewToDo\u30af\u30e9\u30b9\u306e onAdd\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnAdd\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002\nonContentChange\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleContentChange\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnDelete\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u306e\u65b9\u306f\u3059\u3067\u306b\u8aac\u660e\u6e08\u307f\u306a\u306e\u3067\u3001NewToDo\u30af\u30e9\u30b9\u306e\u65b9\u306e\u8aac\u660e\u3092\u3057\u307e\u3059\u3002<\/p>\n[bash]\n handleContentChange(ct){\n this.setState({content: ct});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e input\uff08\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\uff09\u3067\u8d77\u3053\u3063\u305f\u5024\u306e\u5909\u5316\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\nsetState\u30e1\u30bd\u30c3\u30c9\u3067 \u30b9\u30c6\u30fc\u30c8\u3092\u5909\u66f4\u3002<\/p>\n[bash]\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e\u30dc\u30bf\u30f3\u30af\u30ea\u30c3\u30af\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\u3001\n\u6700\u5927\u5024\u3092\uff11\u52a0\u7b97\u3057\u3066\u3001ToDo\u30c7\u30fc\u30bf\u306e\u6700\u5f8c\u5c3e\u306b\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0(push)\u3002<\/p>\n\u305d\u3057\u3066\u3001setState\u3067\u3000maxId\u3068content\u3068datas \u306e\u5909\u66f4\u3092\u4f1d\u3048\nReactJS\u306b\u30ec\u30f3\u30c0\u30fc\u3092\u4f9d\u983c\u3057\u307e\u3059\u3002<\/p>\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u3088\u3046\u3084\u304fToDo\u30ea\u30b9\u30c8\u306e\u5b8c\u6210\u3067\u3059\u3002<\/p>\n\u90e8\u5206\u90e8\u5206\u3092\u5207\u308a\u53d6\u3063\u305f\u30bd\u30fc\u30b9\u3067\u898b\u3065\u3089\u304b\u3063\u305f\u3068\u601d\u3044\u307e\u3059\u306e\u3067\u3001\u5168\u30bd\u30fc\u30b9\u3092\u4ee5\u4e0b\u306b\u8cbc\u308a\u4ed8\u3051\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n[bash]<\/p>\n<\/div>\n
\u3068ToDo\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u30d1\u30fc\u30c4\u3002\u3053\u308c\u21d3\u21d3\u21d3\u3002<\/p>\n
<\/a><\/p>\n\u305d\u3057\u3066ToDo\u306e\u4e00\u89a7\u306e\u4e00\u884c\u3092\u69cb\u6210\u3059\u308b\u30d1\u30fc\u30c4\u3002\u3053\u308c\u21d3\u21d3\u21d3\u3002<\/p>\n<\/a><\/p>\n\u30d1\u30fc\u30c4\u306f\u6c7a\u307e\u308a\u307e\u3057\u305f\u306e\u3067\u3001\u3053\u306e\u30d1\u30fc\u30c4\u3092\u30af\u30e9\u30b9\u3068\u3057\u3066\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3059\u3002<\/p>\n\u307e\u305a\u6700\u521d\u306e\u30d1\u30fc\u30c4 ToDo\u4e00\u89a7\u3092\u3000DataList\u3002\n\u6b21\u306bToDo\u3092\u8ffd\u52a0\u3059\u308b\u30d1\u30fc\u30c4\u3092 NewToDo\u3002\nToDo\u306e\u4e00\u884c\u3092\u69cb\u6210\u3059\u308b\u30d1\u30fc\u30c4\u3092\u3000DataLine\n\u6700\u5f8c\u306b\u3053\u308c\u3089\u5168\u90e8\u3092\u5305\u542b\u3059\u308b ToDoList\u3000\u3068\u3057\u307e\u3059\u3002<\/p>\n\u56f3\u3067\u66f8\u304f\u3068\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/a><\/p>\n\u3067\u306f\u307e\u305aToDo\u4e00\u89a7\u3067\u3042\u308b\u3000DataList\u3092\u30af\u30e9\u30b9\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n class DataList extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleOnDelete(id){\n this.props.onDelete(id);\n }<\/p>\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push( this.handleOnDelete(id)}\/>);\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u306a\u3093\u306e\u3053\u3068\u304b\u7406\u89e3\u3067\u304d\u307e\u3059\u304b\uff1f \u666e\u901a\u96e3\u3057\u3044\u306a\u3041\u3068\u601d\u3044\u307e\u3059\u3088\u306d\u3002<\/p>\n\u30af\u30e9\u30b9\u5b9a\u7fa9\u306e\u8aac\u660e\u306f HelloWorld\u3092\u51fa\u529b\u3059\u308b\u90e8\u5206\u3067\u3084\u3063\u305f\u306e\u3067\u5272\u611b\u3057\u307e\u3059\u3002<\/p>\n\u3067\u306f \u6b21\u306econstructor\u3000\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb\n\u8981\u306f\u30af\u30e9\u30b9\u306e\u521d\u671f\u5316\u51e6\u7406\u3092\u3053\u3053\u3067\u884c\u3044\u307e\u3059\u3088\u3000\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb\n\u521d\u671f\u5316\u3067\u3059\u308b\u3053\u3068\u306f\u7279\u306b\u306a\u3044\u306e\u3067\u3001\u304a\u6c7a\u307e\u308a\u306e\u304a\u307e\u3058\u306a\u3044 super(props)\u3060\u3051\u3092\u8a18\u8ff0\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n[bash]\n constructor(props){\n super(props);\n }\n[\/bash]<\/p>\n\u6b21\u306e handleOnDelete \u3053\u308c\u306a\u3093\u3067\u3059\u304c\u30fb\u30fb \u5fc5\u8981\u3067\u3059\u304c\u3001\u3053\u306e\u8aac\u660e\u306f\u5f8c\u56de\u3057\u306b\u3057\u307e\u3059\u3002<\/p>\n[bash]\n handleOnDelete(id){\n this.props.onDelete(id);\n }\n[\/bash]<\/p>\n\u6700\u5f8c\u306b render\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\nHelloWorld\u3067\u3082\u3084\u3063\u305f\u3088\u3046\u306b\u3001render\u30e1\u30bd\u30c3\u30c9\u3067\u3001\u3053\u306e\u30af\u30e9\u30b9\u304c\u51fa\u529b\u3059\u308b\nHTML\u30bf\u30b0\u3092\u69cb\u7bc9\u3059\u308b\u3093\u3067\u3059\u3002<\/p>\nToDo\u306e\u4e00\u89a7\u306a\u3093\u3067\u3001\u3053\u306e\u30af\u30e9\u30b9\u3092\u4f5c\u308b\u3068\u304d\u306bToDo\u306e\u4e00\u89a7\u3068\u306a\u308b\u30c7\u30fc\u30bf\u3092\u5f15\u304d\u6e21\u3057\u3066\u3082\u3089\u3046\u3053\u3068\u3092\u60f3\u5b9a\u3057\u307e\u3059\u3002\n\u305d\u308c\u304c\u3000this.props.datas\u3000\u3068\u3044\u3046\u5909\u6570\u3067\u53c2\u7167\u3067\u304d\u307e\u3059\u3002<\/p>\nrender\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067\u306f\u3001\u3053\u306e\u5909\u6570\u3092\u30eb\u30fc\u30d7\u3067\u56de\u3057\u3066\u3001 dlist\u3068\u3044\u3046\u5909\u6570\u306b push\u3057\u3066\u3044\u3063\u3066\u307e\u3059\u3002\npush\u3059\u308b\u5185\u5bb9\u306f\u3001ToDo\u306e\uff11\u884c\u3092\u69cb\u6210\u3059\u308b DataLine\u30bf\u30b0\uff08\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u3067\u3059\u3002<\/p>\n\u305d\u3057\u3066 render\u30e1\u30bd\u30c3\u30c9\u304c\u30ea\u30bf\u30fc\u30f3\u3059\u308b\u5185\u5bb9\u306f <div>\u30bf\u30b0\u306e\u4e2d\u306b\u4e0a\u8a18\u306e\u914d\u5217\u5909\u6570\u3092\u7d44\u307f\u8fbc\u3093\u3060\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push( this.handleOnDelete(id)}\/>);\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n[\/bash]<\/p>\n\u809d\u5fc3\u306a\u3053\u3068\u3092\u5fd8\u308c\u3066\u3044\u307e\u3057\u305f\u3002\n\uff13\u3064\u306e\u30d1\u30fc\u30c4\u3092\u5305\u542b\u3059\u308b\u4e00\u756a\u5927\u304d\u306a\u30d1\u30fc\u30c4\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u308c\u3092ToDoList\u30af\u30e9\u30b9\u3068\u3057\u307e\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306e\u30bd\u30fc\u30b9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);<\/p>\n this.state = {\n datas: props.datas\n }\n }<\/p>\n render(){\n return (<\/p>\n\n \n \n <\/div>\n );\n }\n }\n[\/bash]<\/p>\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001NewToDo\u30bf\u30b0\u3068DataList\u30bf\u30b0\u3092\u69cb\u7bc9\u3057\u3066\u3044\u308b\u306e\u304c\u89e3\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u305d\u3057\u3066 DataList\u30bf\u30b0\u306e datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b this.state.datas\u3000\u3092\u6e21\u3057\u3066\u3044\u307e\u3059\u3002\nthis.state.datas\u3000\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\uff1f\nstate\u3068\u306f\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u52d5\u7684\u306a\u5909\u6570\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\nReactJS\u3067\u306f state\u306e\u5024\u304c\u5909\u66f4\u3055\u308c\u308b\u3068\u3001\u81ea\u52d5\u7684\u306b\u305d\u306estate\u306e\u5024\u304c\u6307\u3057\u793a\u3059 HTML\u3092\u66f8\u304d\u63db\u3048\u308b\u4ed5\u7d44\u307f<\/h4>\n\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n\u3067\u3001\u5b9f\u969b\u306b\u3053\u3053\u3067\u306f\u3000this.state.datas\u3000\u306b\u4f55\u304c\u5165\u3063\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u6700\u521d\u306e\u65b9\u3067\u8aac\u660e\u3057\u305f\nToDo\u30ea\u30b9\u30c8\u306e\u4e2d\u8eab\u3067\u3042\u308b DATAS\u5909\u6570\u304c\u5165\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u3053\u308c\u3067\u306f\u8a00\u8449\u8db3\u3089\u305a\u3067\u3059\u306d\u3002\nToDoList\u30af\u30e9\u30b9\u304c\u5168\u30af\u30e9\u30b9\u306e\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u3067\u3042\u308b\u306e\u3067\u3001\nReactDOM.render \u3067\u306f\u3000ToDoList\u30af\u30e9\u30b9\u3092\u3000render\u3057\u3066\u3082\u3089\u3044\u307e\u3059\u3002\n\u30bd\u30fc\u30b9\u3067\u66f8\u304f\u3068\u3053\u3093\u306a\u611f\u3058\u3002<\/p>\n[bash]\nReactDOM.render(\n ,\n document.getElementById(“root”)\n);<\/p>\n[\/bash]<\/p>\n\u3067\u3001\u3053\u308c\u3060\u3051\u3060\u3068\u3001ToDoList\u306e\u521d\u671f\u5024\u3092\u6e21\u305b\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u306a\u308b\u306e\u3067\u3001\n\u6b63\u3057\u304f\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\u8981\u306f\u30af\u30e9\u30b9\u5185\u3067\u4f7f\u3044\u305f\u3044\u30c7\u30fc\u30bf\u306f \u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u305d\u3046\u306d\u3002\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u30c7\u30fc\u30bf\u3068\u306f\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u3082\u306e\u306a\u306e\u3067\u3000\uff5b\uff5d\u3000\u3067\u62ec\u3063\u3066\u6e21\u305d\u3046\u306d\u3068\u3044\u3046\u30eb\u30fc\u30eb\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n var DATAS = [\n {id:1, content:”Softbank\u89e3\u7d04”},\n {id:2, content:”R-SIM10\u8cfc\u5165”},\n {id:3, content:”\u570f\u5916\u75c5\u3092\u514b\u670d\u3059\u308bSIM\u30d5\u30ea\u30fc\u30eb\u30fc\u30bf\u30fc\u30b2\u30c3\u30c8”},\n {id:4, content:”\u697d\u5929\u30e2\u30d0\u30a4\u30eb\u7533\u3057\u8fbc\u307f”}\n ]<\/p>\n ReactDOM.render(\n ,\n document.getElementById(“root”)\n );\n[\/bash]<\/p>\n\u3067\u3001\u307e\u3060\u3053\u308c\u3067\u3082 DataList\u30af\u30e9\u30b9\u306e\u3000this.props.datas\u3000\u306b DATAS\u306e\u5024\u304c\u6e21\u3063\u3066\u3044\u304f\u4ed5\u7d44\u307f\u304c\u8aac\u660e\u3067\u304d\u3066\u3044\u307e\u305b\u3093\u306d\u3002\nDataList\u30af\u30e9\u30b9\u306f\u3000ToDoList\u30af\u30e9\u30b9\u306e\u5b50\u4f9b\u3067\u3059\u3002\u3064\u307e\u308a DataList\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\n\u4f5c\u6210\u3055\u308c\u3001\u305d\u306e\u6642\u306bDataList\u30af\u30e9\u30b9\u304c\u6271\u3046\u5909\u6570\u3068\u3057\u3066 datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u3092\u6e21\u3059\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u65e5\u672c\u8a9e\u3067\u66f8\u304f\u3068\u3084\u3084\u3053\u3057\u3044\u3067\u3059\u306d\u3002\n\u3064\u307e\u308a\u306f\u3001ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3053\u3068\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n this.state = {\n datas: props.datas\n }\n }<\/p>\n render(){\n return (<\/p>\n\n \n \n <\/div>\n );\n }\n }<\/p>\n[\/bash]<\/p>\nrender\u30e1\u30bd\u30c3\u30c9\u306e\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f\u5909\u6570\u306f\u3001 \u30af\u30e9\u30b9\u5185\u3067 props\uff08\u30d7\u30ed\u30d1\u30c6\u30a3\uff09\u3068\u3057\u3066\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306f datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f DATAS\u5909\u6570\u306e\u4e2d\u8eab\u3092\u81ea\u8eab\u306e\u30af\u30e9\u30b9\u306e state\u3068\u3057\u3066\u7ba1\u7406\u3057\u3088\u3046\u3068\u3057\u307e\u3059\u3002\n\u3053\u308c\u304c constructor\u306e\u4e2d\u306b\u3042\u308b\u3002<\/p>\nthis.state = {datas: this.props.datas};<\/p>\n\u3053\u308c\u3067 ToDoList\u30af\u30e9\u30b9 \u5185\u3067\u306f this.state.datas \u3067 DATAS\u306e\u5185\u5bb9\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3084\u3063\u3068\u3053\u308c\u3067 DataList\u306b DATAS\u306e\u5024\u304c\u6e21\u308b\u3053\u3068\u304c\u8aac\u660e\u3067\u304d\u307e\u3057\u305f\u304b\u306d\u30fb\u30fb\u30fb<\/p>\n\u3067\u306f\u3001\u6b21\u306fDataList\u306e render\u30e1\u30bd\u30c3\u30c9\u3067ToDo\u306e\u4e00\u884c\u4e00\u884c\u3092\u69cb\u6210\u3059\u308bDataLine\u30af\u30e9\u30b9\u3092\u4f5c\u3063\u3066\u3044\u308b\u3068\u3053\u308d\u3092\n\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push();\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n[\/bash]<\/p>\n\u914d\u5217\u5909\u6570 dlist\u306b DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092push\u3057\u3066\u3044\u3063\u3066\u307e\u3059\u306d\u3002\n\u305d\u3057\u3066\u3001DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e data\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u306e\uff11\u884c\u306e\u5024\n\u3064\u307e\u308aToDo\u4e00\u4ef6\u3092\u30c7\u30fc\u30bf\u3068\u3057\u3066\u6e21\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306f this.props.data\u3067\u3053\u306e\u5024\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nkey\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b\u3064\u3044\u3066\u3067\u3059\u304c\u3001ReactJS\u3067\u306f\u7e70\u308a\u8fd4\u3057\u30eb\u30fc\u30d7\u3067\u540c\u3058\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u751f\u6210\n\u3059\u308b\u3068\u304d\u306f\u3001\uff11\u3064\uff11\u3064\u3092\u30e6\u30cb\u30fc\u30af\u306b\u3059\u308b\u5024\u3092\u30ad\u30fc(key)\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\n\u3068\u3044\u3046\u30eb\u30fc\u30eb\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u3053\u3053\u3067\u306f DATAS\u306e\u4e2d\u306e\u30c7\u30fc\u30bf\u306e id\u3092\u30ad\u30fc\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\u3067\u306f\u3001ToDo\u306e\uff11\u4ef6\u306b\u3042\u305f\u308bDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u306a\u306b\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb<\/p>\n[bash]\n class DataLine extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n render(){\n return (<\/p>\n\n \u524a\u9664<\/button>\n {this.props.data.id} — {this.props.data.content}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u306e\u3088\u3046\u306bDataLine\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u30dc\u30bf\u30f3\uff11\u3064\u3068\u3001\u6587\u5b57\u5217\u3068\u3057\u3066\u306e\u30c7\u30fc\u30bf\u306eid\u3068content\u3092\u51fa\u529b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\u3053\u3053\u307e\u3067\u3067\u3001\u3088\u3046\u3084\u304f\u3001ToDoList\u3067\u524a\u9664\u30dc\u30bf\u30f3\u4ed8\u304d\u306e\u4e00\u89a7\u304c\u3067\u304d\u307e\u3057\u305f\u3002\n\u3067\u3082\u3001\u3053\u308c\u3058\u3083\u307e\u3060ToDo\u3082\u8ffd\u52a0\u3067\u304d\u306a\u3044\u3057\u3001\u524a\u9664\u3082\u3067\u304d\u306a\u3044\u3002<\/p>\n\u307e\u305a\u306f\u3001\u524a\u9664\u306e\u65b9\u306e\u8aac\u660e\u306b\u5165\u308a\u307e\u3057\u3087\u3046\u3002\n\u3067\u3001\u524a\u9664\u3092\u8003\u3048\u308b\u524d\u306b\u3001ReactJS\u3067\u30a2\u30d7\u30ea\u3092\u69cb\u7bc9\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u8aac\u660e\u3057\u3066\u304a\u304d\u307e\u3059\u3002\n\u30a2\u30d7\u30ea\u306f\u3069\u3093\u306a\u30d1\u30fc\u30c4\u3067\u69cb\u6210\u3055\u308c\u308b\u304b\u30fb\u30fb\u30fb\u3001\u3053\u308c\u306f\u3082\u3046\u8aac\u660e\u6e08\u307f\u3067\u3059\u306d\u3002\n\u6b21\u306b\u30a2\u30d7\u30ea\u3067\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5024\u3067\u7ba1\u7406\u3057\u3066\u3044\u304b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\u306f\u4f55\u304b\u30fb\u30fb\u30fb\n\u3053\u308c\u3092\u8003\u3048\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5024\u3067\u3001\u7ba1\u7406\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\uff1d\u30b9\u30c6\u30fc\u30c8(state\uff09\n<\/h4>\n\u306a\u3093\u3067\u3059\u3002\n\u305d\u3057\u3066\u3001\u3082\u3046\u3061\u3087\u3063\u3068\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u30fb\u30fb\u30fb\u3001\u4ed6\u306e\u5024\u304b\u3089\u8a08\u7b97\u3057\u305f\u308a\u3057\u3066\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u5024\u306f\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u306f\u7ba1\u7406\u3057\u307e\u305b\u3093\u3002\n\u3069\u3046\u8a08\u7b97\u3057\u3088\u3046\u3068\u3057\u3066\u3082\u3001\u3069\u3053\u304b\u3089\u3082\u5c0e\u304d\u51fa\u305b\u306a\u3044\u5909\u5316\u3059\u308b\u5024\u306e\u307f\u3092\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\u3055\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306b\u304a\u3044\u3066\u30b9\u30c6\u30fc\u30c8\u306f\u306a\u306b\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb<\/p>\n\u307e\u305a\u5f53\u7136\u3067\u3059\u304cToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf\u3067\u3059\u306d\u3002\n\u305d\u3057\u3066\u3082\u3046\u3072\u3068\u3064\u3001ToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024\u3067\u3059\u3002\n\u305d\u3057\u3066\u305d\u3057\u3066\u3001\u6700\u5f8c\u306b\u3082\u3046\u3072\u3068\u3064\u3002ToDo\u30ea\u30b9\u30c8\uff11\u4ef6\uff11\u4ef6\u306f\u30e6\u30cb\u30fc\u30af\u306a\u3082\u306e\u306a\u306e\u3067\u3001\nToDo\uff11\u4ef6\u306b\u5bfe\u3057\u3066\uff11\u3064\u306eID\u3092\u6301\u3061\u307e\u3059\u3002\u305d\u306eID\u306f\u91cd\u8907\u3057\u3066\u306f\u3044\u3051\u306a\u3044\u306e\u3067\u3000ID\u306e\u6700\u5927\u5024\u3092\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\u3067\u3001\u307e\u305f\u307e\u305f\u3053\u3053\u3082\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb\u30fb\n\u30b9\u30c6\u30fc\u30c8\u3092\u8ab0\u304c\u3001\u3064\u307e\u308a\u3069\u306e\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u304b\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb<\/p>\n\u4e00\u756a\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306b\u3042\u308b\u30af\u30e9\u30b9\u304c\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3059\u308b<\/h4>\n\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u3001\u672c\u5f53\u306f\u3053\u308c\u306f\u5618\u3060\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u6163\u308c\u306a\u3044\u3046\u3061\u306f\n\u4e00\u756a\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u308b\u306e\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002\n\u3064\u307e\u308a\u4eca\u56de\u306eToDo\u30ea\u30b9\u30c8\u3067\u8a00\u3046\u3068\u3000ToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }\n[\/bash]<\/p>\n\u3088\u3063\u3066 ToDoList\u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u4e0a\u8a18\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\uff08\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u306f\u30b9\u30c6\u30fc\u30c8\u3067\u7ba1\u7406\u3059\u308b\u5024\u306e\u521d\u671f\u5024\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\uff09<\/p>\nthis.state = \uff5b\u30b9\u30c6\u30fc\u30c8\u3067\u7ba1\u7406\u3059\u308b\u5909\u6570\u7fa4\uff5d<\/h4>\n\u305d\u3057\u3066\u3001 this.state = \u3068\u8a18\u8ff0\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u8a2d\u5b9a\u3067\u304d\u308b\u306e\u306f\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3060\u3051\u3060\u3068\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nReactJS\u3067\u306f\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u304c\u5909\u5316\u3059\u308b\u3068\u5fc5\u8981\u306a\u3068\u3053\u308d\u3060\u3051\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3092\u81ea\u52d5\u3067\u884c\u3044\u307e\u3059\u3002\n\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u30bb\u30c3\u30c8\u3057\u3066\u81ea\u52d5\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u306b\u306f\n\u30af\u30e9\u30b9\u306e\u3000setState\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002\n\u4f8b\u3048\u3070\u3001ToDo\u30ea\u30b9\u30c8\u306e\u6700\u5927ID(maxId)\u3092\u5909\u5316\u3055\u305b\u3088\u3046\u3068\u3059\u308b\u306a\u3089\u3070\n\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3059\u308b\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067<\/p>\n[bash]\nthis.setState({maxId: xxxx});\n[\/bash]<\/p>\n\u3068\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nID\u306e\u6700\u5927\u5024\u3092\u5909\u3048\u3066\u3082\u3001\u753b\u9762\u4e0a\u5909\u5316\u3059\u308b\u5fc5\u8981\u306e\u3042\u308b\u3068\u3053\u308d\u306f\u306a\u3044\u306e\u3067ReactJS\u306f\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u306e\u307f\u3092\u5909\u5316\u3055\u305b\u3001\u306a\u306b\u3082\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306f\u884c\u3044\u307e\u305b\u3093\u3002<\/p>\nToDo\u30ea\u30b9\u30c8\u304b\u3089\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u3053\u3068\u3092\u8003\u3048\u308b\u3068\u30fb\u30fb\u30fb\nToDoList\u30af\u30e9\u30b9\u5185\u306e\u4f55\u3089\u304b\u306e\u30e1\u30bd\u30c3\u30c9\u3067<\/p>\n[bash]\nvar newDatas = [];\nvar i;<\/p>\nfor (i = 0 ; i < this.state.datas.length ; i++){\n var data = this.state.datas[i];\n if (data.id != \u524a\u9664\u3059\u308bID){\n newDatas.push(data);\n }\n}<\/p>\nthis.setState({datas: newDatas});\n[\/bash]<\/p>\n\u3068\u3057\u3066\u3084\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\nReactJS\u304c\u7ba1\u7406\u3059\u308b datas\u30b9\u30c6\u30fc\u30c8\u304c\u5909\u5316\u3059\u308b\u3068\u3001\u305d\u306e\u5909\u6570\u306e\u5024\u3092\u4f7f\u3063\u3066\n\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u90e8\u5206\u304c\u81ea\u52d5\u7684\u306b\u8abf\u6574\u3055\u308c\u308b\u306e\u3067\u3059\u3002\n\u4f8b\u3048\u3070 jQuery\u306a\u3093\u304b\u3067\u540c\u3058\u3088\u3046\u306a\u3053\u3068\u3092\u3057\u3088\u3046\u3068\u601d\u3048\u3070\u3001\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u306e\u30bf\u30b0\u306e\u5b50\u4f9b\u3092\uff08ToDo\uff11\u4ef6\uff09\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\n\u4e0d\u8981\u306a\u884c\u306eHTML\u30bf\u30b0\u3092 remove\u3059\u308b\u306a\u3069\u3067\u3059\u306d\u3002<\/p>\n\u3067\u306f\u6b21\u306b\u30da\u30fc\u30b8\u4e0a\u3067\u8d77\u3053\u308b\u30a4\u30d9\u30f3\u30c8\u306f\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u6271\u3046\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\n\u307e\u305a\u3001ToDo\u4e00\u4ef6\u3092\u524a\u9664\u3059\u308b\u51e6\u7406\u3001\u3064\u307e\u308aToDo\u30ea\u30b9\u30c8\u306e\u5de6\u5074\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308b\n\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u305f\u51e6\u7406\u3092\u3069\u3053\u306b\u8a18\u8ff0\u3057\u3066\u3001\u30af\u30ea\u30c3\u30af\u306b\u3088\u3063\u3066\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u306fDataLine\u30af\u30e9\u30b9\u5185\u3067\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\n\u5f53\u7136\u30af\u30ea\u30c3\u30af\u30a4\u30d9\u30f3\u30c8\u306e\u51e6\u7406\u306fDataLine\u30af\u30e9\u30b9\u5185\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\u3069\u3046\u66f8\u304f\u304b\u3068\u3044\u3046\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class DataLine extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleClick()}>\u524a\u9664<\/button>\n {this.props.data.id} — {this.props.data.content}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u3053\u306f\u7d50\u69cb\u666e\u901a\u306a\u306e\u3067\u3059\u304c\u3001\u524a\u9664\u30dc\u30bf\u30f3\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u3044\u308b\u90e8\u5206\u3067\nonClick\u30a4\u30d9\u30f3\u30c8\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nReactJS\u3067\u306f onclick<\/strong>\u3067\u306f\u306a\u304f\u3001onClick<\/strong>\u3067\u3059\u3002\n\u305d\u3057\u3066onClick\u3092\u51e6\u7406\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e handleClick\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u307e\u3059\u3002<\/p>\n\u3067\u3001handelClick\u30e1\u30bd\u30c3\u30c9\u5185\u306e\u8a18\u8ff0\u3092\u898b\u3066\u307f\u308b\u3068<\/p>\n[bash]\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }\n[\/bash]<\/p>\n\u3068\u306a\u3063\u3066\u3044\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306edatas\u3000\u3092\u524a\u9664\u3057\u3066\u3044\u307e\u305b\u3093\u306d\u3002\n\u306a\u305c\u304b\u3068\u3044\u3046\u3068\u3001\u4eca\u56de\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u306f\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9ToDoList\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3057\u3066\u3044\u308b\u304b\u3089\u30fb\u30fb\n\u305d\u306e\u5909\u6570\u3092\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u3001\u524a\u9664\u3067\u304d\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3069\u3046\u3059\u308b\u304b\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u51e6\u7406\u3067\u304d\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306b\u304a\u9858\u3044\u3059\u308c\u3070\u826f\u3044<\/h4>\n[bash]\nthis.props.onDelete(this.props.data.id);\n[\/bash] <\/p>\n\u3053\u308c\u306f\u3001\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b onDelete\u3068\u3044\u3046\u306e\u3092\u4f5c\u308b\u3068\u3044\u3046\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\n\u305d\u3057\u3066\u305d\u308c\u306f\u5909\u6570\u3092\u7ba1\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u306f\u306a\u304f\u3066\u3001\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3060\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u96e3\u3057\u3044\u3067\u3059\u306d\u3002\u304b\u306a\u308a\u9811\u5f35\u3063\u3066\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nDataLine\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3042\u308b\u3002\n\u3067\u30fb\u30fb\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u3092DataLine\u30af\u30e9\u30b9\u3088\u308a\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u51e6\u7406\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308b\u304b\u3068\u3044\u3046\u3068\nDataLine\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u90e8\u5206\u306b\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3068\u3057\u3066\u3001\u4e0a\u4f4d\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002\n\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \u30b9\u30c6\u30fc\u30c8\u3092\u306a\u3093\u3068\u304b\u524a\u9664\u3057\u3088\u3046\u3068\u52aa\u529b\u3059\u308b\u3002\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u4eca\u56de\u306e\u4f8b\u3067\u8a00\u3046\u3068\u3001DataLine\u306e\uff11\u3064\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306f DataList\u30af\u30e9\u30b9\u306a\u306e\u3067\u30fb\u30fb\u30fb\n\u30c7\u30fc\u30bf\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u5909\u6570\u3092\u53c2\u7167\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\u51fa\u6765\u306a\u3044\uff1f\uff1f\uff1f\uff1f<\/p>\n\u3068\u601d\u3046\u65b9\u3082\u3044\u3089\u3063\u3057\u3083\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\nDataList\u306f\u30c7\u30fc\u30bf\u306e\u4e00\u89a7\u3092\u51fa\u529b\u3057\u3066\u308b\u3093\u3060\u304b\u3089\u3001\u5909\u6570\u306e\u5024\u3092\u524a\u9664\u3067\u304d\u308b\u3058\u3083\u3093\u3002\n\u305d\u3046\u601d\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002<\/p>\n\u3067\u3082 ReactJS\u306e\u9244\u5247<\/p>\n\u30b9\u30c6\u30fc\u30c8\u306f\u6700\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b<\/h4>\nDataList\u306f\u6700\u4e0a\u4f4d\u3058\u3083\u3042\u308a\u307e\u305b\u3093\u306d\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3057\u3066\u3044\u306a\u3044\u3002\n\u306a\u306e\u3067\u3001\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u524a\u9664\u3067\u304d\u307e\u305b\u3093\u3002\n\u4e00\u89a7\u30c7\u30fc\u30bf\u306f\u30b9\u30c6\u30fc\u30c8(state)\u3067\u306f\u306a\u304f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3(props)\u3067\u53c2\u7167\u3067\u304d\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3058\u3083\u3042\u56f0\u3063\u305f\u30fb\u30fb\u30fb\u3000\u3069\u3046\u3059\u308a\u3083\u3044\u3044\u3093\u3060\u3068\u306a\u308a\u307e\u3059\u304c\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3053\u3068\u304c\u51fa\u6765\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308a\u3083\u3044\u3044<\/h4>\n\u3067\u3001\u4f1d\u3048\u308b\u65b9\u6cd5\u3067\u3059\u304c\u3001\u3053\u308c\u306fDataLine\u30af\u30e9\u30b9\u306e onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u540c\u3058\u3067\u3001\nDataList\u30af\u30e9\u30b9\u306b\u3082 onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f5c\u308a\u3001\u305d\u3053\u3092\u7d4c\u7531\u3057\u3066\u3001\u6700\u4e0a\u4f4d\u306e\nToDoList\u30af\u30e9\u30b9\u306b\u60c5\u5831\u3092\u4f1d\u3048\u308a\u3083\u3044\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u3067\u306f\u3001\u5148\u307b\u3069\u306e\u90e8\u5206\u3092\u66f8\u304d\u63db\u3048\u3066\u307f\u307e\u3059\u3002<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \/\/\u30b9\u30c6\u30fc\u30c8\u3092\u76f4\u63a5\u524a\u9664\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308b\u3002\n this.props.onDelete(id);\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3067\u3001DataList\u30af\u30e9\u30b9\u306e\u4e0a\u4f4d\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306a\u306e\u3067\u3001\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067 DataList\u30af\u30e9\u30b9\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u969b\u306b\nonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u3092 ToDoList\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9\u3078\u8ee2\u9001\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f\u3001<\/p>\n[bash]\n class ToDoList extends React.Component{<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n \n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\n\u306a\u306b\u3092\u3057\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u3000DataList\u30af\u30e9\u30b9\u5185\u3067\u8d77\u3053\u3063\u305f\u3000onDelete\u30a4\u30d9\u30f3\u30c8\u306f\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9 handleOnDelete\u3067\u51e6\u7406\u3059\u308b\u3088\u3002\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\nToDoList\u30af\u30e9\u30b9\u306ehandleOnDelete\u3067\u306f\u3001\u3088\u3046\u3084\u304f ToDo\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\n\u3067\u304d\u308b\u306e\u3067\u3001\u3044\u3088\u3044\u3088\u3053\u3053\u3067\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u307e\u3059\u3002<\/p>\nhandleOnDelete\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3092\u898b\u3066\u3044\u305f\u3060\u304f\u3068\u30fb\u30fb\u30fb\nstate.datas\u3000\u3092\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\u3001\u305d\u306e\u30c7\u30fc\u30bf\u306eid\u304c\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3063\u3066\u304d\u305f\u3002\n\u524a\u9664\u5bfe\u8c61ID\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3001\u5bfe\u8c61\u5916\u306a\u3089\u65b0\u305f\u306a\u914d\u5217\u5909\u6570\u306bpush\u3059\u308b\u3002<\/p>\n\u305d\u3057\u3066\u3001\u5168\u30c7\u30fc\u30bf\u306e\u30eb\u30fc\u30d7\u304c\u7d42\u308f\u3063\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067<\/p>\n[bash]\n this.setState({datas: newDatas});\n[\/bash]<\/p>\n\u3068\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u66f4\u3092ReactJS\u306b\u901a\u77e5\u3057\u3066\u3044\u307e\u3059\u3002\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u7406\u89e3\u3067\u304d\u307e\u3057\u305f\u304b\uff1f\uff1f<\/p>\n\u3067\u306f\u6b21\u884c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002\n\u3044\u3088\u3044\u3088ToDo\u306e\u8ffd\u52a0\u3067\u3059\u3002<\/p>\n\u8ffd\u52a0\u306f NewToDo\u30af\u30e9\u30b9\u3067\u884c\u3044\u307e\u3059\u3002<\/p>\n[bash]\n class NewToDo extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleClick(){\n this.props.onAdd();\n }<\/p>\n handleChange(event){\n var val = event.target.value;\n this.props.onContentChange(val);\n }<\/p>\n render(){\n return (<\/p>\n\n \u30b3\u30f3\u30c6\u30f3\u30c4<\/label>\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3044\u304d\u306a\u308a\u30bd\u30fc\u30b9\u5168\u90e8\u8cbc\u308a\u4ed8\u3051\u305f\u306e\u3067 \u304e\u3087\u3063\u3068\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u30fb\u30fb\u30fb\n\u3053\u3053\u307e\u3067\u306e\u3053\u3068\u304c\u7406\u89e3\u3067\u304d\u3066\u3044\u305f\u3089\u306a\u3093\u3068\u304b\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u307e\u305a\u306f render\u30e1\u30bd\u30c3\u30c9\u304b\u3089\u8aac\u660e\u3002<\/p>\ndiv\u30bf\u30b0\u306e\u4e2d\u306blabel\uff11\u3064\u3068\u3001input\uff11\u3064\u3068button\uff11\u3064\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u307e\u3059\u3002\nlabel\u306f\u5358\u306a\u308b\u76ee\u5370\u306a\u306e\u3067\u8aac\u660e\u306f\u7701\u7565\u3059\u308b\u3068\u3057\u3066\u30fb\u30fb\u30fb<\/p>\ninput \u306fToDo\u306e\u4e2d\u8eab\u3092\u8a18\u8ff0\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u3067\u3059\u3002\nbutton \u306fToDo\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u30dc\u30bf\u30f3\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3053\u3053\u3067\u6539\u3081\u3066ToDoList\u5168\u4f53\u304c\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u304c\u4f55\u3060\u3063\u305f\u304b\u601d\u3044\u51fa\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf<\/li>\nToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024<\/li>\n\u30c7\u30fc\u30bf\u306eID\u306e\u6700\u5927\u5024<\/li>\n<\/ul>\n\u305d\u3057\u3066\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf\u306f\u3059\u3079\u3066\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9 ToDoList\u3067\u7ba1\u7406\u3055\u308c\u308b\u306e\u3067\u3057\u305f\u3002\n\u3064\u307e\u308aNewToDo\u30af\u30e9\u30b9\u306e input \u306b\u5165\u529b\u3055\u308c\u305f\u5024\u306f\u3001NewToDo\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b\u306e\u3067\u306f\u306a\u304f\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\n\u305d\u3057\u3066\u3001NewToDo\u30af\u30e9\u30b9\u306ebutton\u30af\u30ea\u30c3\u30af\u3067ToDo\u30ea\u30b9\u30c8\u306b\u8ffd\u52a0\u3057\u305f\u3044\u304c\u3001\u3053\u308c\u3082\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u3053\u3068\u3092\u901a\u77e5\u3057\u3066\u3001\u51e6\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n\u3053\u306e\u3053\u3068\u304c<\/p>\n[bash]\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n[\/bash]<\/p>\ninput\u3067\u306f onChange \u3064\u307e\u308a\u5024\u304c\uff11\u6587\u5b57\u3067\u3082\u5909\u5316\u3059\u308b\u305f\u3073\u306b\u3001\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002\n\u30dc\u30bf\u30f3\u306e\u30af\u30ea\u30c3\u30af\u306f click\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002<\/p>\n\u3053\u308c\u3060\u3051\u3067\u3059\u3002NewToDo\u30af\u30e9\u30b9\u306f\u81ea\u5206\u3067\u3059\u308b\u3053\u3068\u306f\u3001\u307b\u3068\u3093\u3069\u306a\u306b\u3082\u3042\u308a\u307e\u305b\u3093\u3002\n\u5909\u5316\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u304c\u3042\u3063\u305f\u3053\u3068\u3092\u89aa\u30af\u30e9\u30b9\u3078\u901a\u77e5\u3057\u3066\u3044\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3067\u306f\u6700\u5f8c\u3001\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e ToDoList\u30af\u30e9\u30b9\u3092\u8997\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }<\/p>\n handleContentChange(ct){\n this.setState({content: ct});\n }<\/p>\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleOnAdd()}\n onContentChange={(ct) => this.handleContentChange(ct)}\n \/>\n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u307e\u305a\u6ce8\u76ee\u3057\u3066\u3044\u305f\u3060\u304d\u305f\u3044\u306e\u306f render\u30e1\u30bd\u30c3\u30c9\u3002<\/p>\n\nNewToDo\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\nDataList\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\n<\/ul>\nNewToDo\u30af\u30e9\u30b9\u306e onAdd\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnAdd\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002\nonContentChange\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleContentChange\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnDelete\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u306e\u65b9\u306f\u3059\u3067\u306b\u8aac\u660e\u6e08\u307f\u306a\u306e\u3067\u3001NewToDo\u30af\u30e9\u30b9\u306e\u65b9\u306e\u8aac\u660e\u3092\u3057\u307e\u3059\u3002<\/p>\n[bash]\n handleContentChange(ct){\n this.setState({content: ct});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e input\uff08\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\uff09\u3067\u8d77\u3053\u3063\u305f\u5024\u306e\u5909\u5316\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\nsetState\u30e1\u30bd\u30c3\u30c9\u3067 \u30b9\u30c6\u30fc\u30c8\u3092\u5909\u66f4\u3002<\/p>\n[bash]\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e\u30dc\u30bf\u30f3\u30af\u30ea\u30c3\u30af\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\u3001\n\u6700\u5927\u5024\u3092\uff11\u52a0\u7b97\u3057\u3066\u3001ToDo\u30c7\u30fc\u30bf\u306e\u6700\u5f8c\u5c3e\u306b\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0(push)\u3002<\/p>\n\u305d\u3057\u3066\u3001setState\u3067\u3000maxId\u3068content\u3068datas \u306e\u5909\u66f4\u3092\u4f1d\u3048\nReactJS\u306b\u30ec\u30f3\u30c0\u30fc\u3092\u4f9d\u983c\u3057\u307e\u3059\u3002<\/p>\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u3088\u3046\u3084\u304fToDo\u30ea\u30b9\u30c8\u306e\u5b8c\u6210\u3067\u3059\u3002<\/p>\n\u90e8\u5206\u90e8\u5206\u3092\u5207\u308a\u53d6\u3063\u305f\u30bd\u30fc\u30b9\u3067\u898b\u3065\u3089\u304b\u3063\u305f\u3068\u601d\u3044\u307e\u3059\u306e\u3067\u3001\u5168\u30bd\u30fc\u30b9\u3092\u4ee5\u4e0b\u306b\u8cbc\u308a\u4ed8\u3051\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n[bash]<\/p>\n<\/div>\n
\u305d\u3057\u3066ToDo\u306e\u4e00\u89a7\u306e\u4e00\u884c\u3092\u69cb\u6210\u3059\u308b\u30d1\u30fc\u30c4\u3002\u3053\u308c\u21d3\u21d3\u21d3\u3002<\/p>\n
<\/a><\/p>\n\u30d1\u30fc\u30c4\u306f\u6c7a\u307e\u308a\u307e\u3057\u305f\u306e\u3067\u3001\u3053\u306e\u30d1\u30fc\u30c4\u3092\u30af\u30e9\u30b9\u3068\u3057\u3066\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3059\u3002<\/p>\n\u307e\u305a\u6700\u521d\u306e\u30d1\u30fc\u30c4 ToDo\u4e00\u89a7\u3092\u3000DataList\u3002\n\u6b21\u306bToDo\u3092\u8ffd\u52a0\u3059\u308b\u30d1\u30fc\u30c4\u3092 NewToDo\u3002\nToDo\u306e\u4e00\u884c\u3092\u69cb\u6210\u3059\u308b\u30d1\u30fc\u30c4\u3092\u3000DataLine\n\u6700\u5f8c\u306b\u3053\u308c\u3089\u5168\u90e8\u3092\u5305\u542b\u3059\u308b ToDoList\u3000\u3068\u3057\u307e\u3059\u3002<\/p>\n\u56f3\u3067\u66f8\u304f\u3068\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/a><\/p>\n\u3067\u306f\u307e\u305aToDo\u4e00\u89a7\u3067\u3042\u308b\u3000DataList\u3092\u30af\u30e9\u30b9\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n class DataList extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleOnDelete(id){\n this.props.onDelete(id);\n }<\/p>\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push( this.handleOnDelete(id)}\/>);\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u306a\u3093\u306e\u3053\u3068\u304b\u7406\u89e3\u3067\u304d\u307e\u3059\u304b\uff1f \u666e\u901a\u96e3\u3057\u3044\u306a\u3041\u3068\u601d\u3044\u307e\u3059\u3088\u306d\u3002<\/p>\n\u30af\u30e9\u30b9\u5b9a\u7fa9\u306e\u8aac\u660e\u306f HelloWorld\u3092\u51fa\u529b\u3059\u308b\u90e8\u5206\u3067\u3084\u3063\u305f\u306e\u3067\u5272\u611b\u3057\u307e\u3059\u3002<\/p>\n\u3067\u306f \u6b21\u306econstructor\u3000\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb\n\u8981\u306f\u30af\u30e9\u30b9\u306e\u521d\u671f\u5316\u51e6\u7406\u3092\u3053\u3053\u3067\u884c\u3044\u307e\u3059\u3088\u3000\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb\n\u521d\u671f\u5316\u3067\u3059\u308b\u3053\u3068\u306f\u7279\u306b\u306a\u3044\u306e\u3067\u3001\u304a\u6c7a\u307e\u308a\u306e\u304a\u307e\u3058\u306a\u3044 super(props)\u3060\u3051\u3092\u8a18\u8ff0\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n[bash]\n constructor(props){\n super(props);\n }\n[\/bash]<\/p>\n\u6b21\u306e handleOnDelete \u3053\u308c\u306a\u3093\u3067\u3059\u304c\u30fb\u30fb \u5fc5\u8981\u3067\u3059\u304c\u3001\u3053\u306e\u8aac\u660e\u306f\u5f8c\u56de\u3057\u306b\u3057\u307e\u3059\u3002<\/p>\n[bash]\n handleOnDelete(id){\n this.props.onDelete(id);\n }\n[\/bash]<\/p>\n\u6700\u5f8c\u306b render\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\nHelloWorld\u3067\u3082\u3084\u3063\u305f\u3088\u3046\u306b\u3001render\u30e1\u30bd\u30c3\u30c9\u3067\u3001\u3053\u306e\u30af\u30e9\u30b9\u304c\u51fa\u529b\u3059\u308b\nHTML\u30bf\u30b0\u3092\u69cb\u7bc9\u3059\u308b\u3093\u3067\u3059\u3002<\/p>\nToDo\u306e\u4e00\u89a7\u306a\u3093\u3067\u3001\u3053\u306e\u30af\u30e9\u30b9\u3092\u4f5c\u308b\u3068\u304d\u306bToDo\u306e\u4e00\u89a7\u3068\u306a\u308b\u30c7\u30fc\u30bf\u3092\u5f15\u304d\u6e21\u3057\u3066\u3082\u3089\u3046\u3053\u3068\u3092\u60f3\u5b9a\u3057\u307e\u3059\u3002\n\u305d\u308c\u304c\u3000this.props.datas\u3000\u3068\u3044\u3046\u5909\u6570\u3067\u53c2\u7167\u3067\u304d\u307e\u3059\u3002<\/p>\nrender\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067\u306f\u3001\u3053\u306e\u5909\u6570\u3092\u30eb\u30fc\u30d7\u3067\u56de\u3057\u3066\u3001 dlist\u3068\u3044\u3046\u5909\u6570\u306b push\u3057\u3066\u3044\u3063\u3066\u307e\u3059\u3002\npush\u3059\u308b\u5185\u5bb9\u306f\u3001ToDo\u306e\uff11\u884c\u3092\u69cb\u6210\u3059\u308b DataLine\u30bf\u30b0\uff08\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u3067\u3059\u3002<\/p>\n\u305d\u3057\u3066 render\u30e1\u30bd\u30c3\u30c9\u304c\u30ea\u30bf\u30fc\u30f3\u3059\u308b\u5185\u5bb9\u306f <div>\u30bf\u30b0\u306e\u4e2d\u306b\u4e0a\u8a18\u306e\u914d\u5217\u5909\u6570\u3092\u7d44\u307f\u8fbc\u3093\u3060\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push( this.handleOnDelete(id)}\/>);\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n[\/bash]<\/p>\n\u809d\u5fc3\u306a\u3053\u3068\u3092\u5fd8\u308c\u3066\u3044\u307e\u3057\u305f\u3002\n\uff13\u3064\u306e\u30d1\u30fc\u30c4\u3092\u5305\u542b\u3059\u308b\u4e00\u756a\u5927\u304d\u306a\u30d1\u30fc\u30c4\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u308c\u3092ToDoList\u30af\u30e9\u30b9\u3068\u3057\u307e\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306e\u30bd\u30fc\u30b9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);<\/p>\n this.state = {\n datas: props.datas\n }\n }<\/p>\n render(){\n return (<\/p>\n\n \n \n <\/div>\n );\n }\n }\n[\/bash]<\/p>\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001NewToDo\u30bf\u30b0\u3068DataList\u30bf\u30b0\u3092\u69cb\u7bc9\u3057\u3066\u3044\u308b\u306e\u304c\u89e3\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u305d\u3057\u3066 DataList\u30bf\u30b0\u306e datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b this.state.datas\u3000\u3092\u6e21\u3057\u3066\u3044\u307e\u3059\u3002\nthis.state.datas\u3000\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\uff1f\nstate\u3068\u306f\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u52d5\u7684\u306a\u5909\u6570\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\nReactJS\u3067\u306f state\u306e\u5024\u304c\u5909\u66f4\u3055\u308c\u308b\u3068\u3001\u81ea\u52d5\u7684\u306b\u305d\u306estate\u306e\u5024\u304c\u6307\u3057\u793a\u3059 HTML\u3092\u66f8\u304d\u63db\u3048\u308b\u4ed5\u7d44\u307f<\/h4>\n\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n\u3067\u3001\u5b9f\u969b\u306b\u3053\u3053\u3067\u306f\u3000this.state.datas\u3000\u306b\u4f55\u304c\u5165\u3063\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u6700\u521d\u306e\u65b9\u3067\u8aac\u660e\u3057\u305f\nToDo\u30ea\u30b9\u30c8\u306e\u4e2d\u8eab\u3067\u3042\u308b DATAS\u5909\u6570\u304c\u5165\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u3053\u308c\u3067\u306f\u8a00\u8449\u8db3\u3089\u305a\u3067\u3059\u306d\u3002\nToDoList\u30af\u30e9\u30b9\u304c\u5168\u30af\u30e9\u30b9\u306e\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u3067\u3042\u308b\u306e\u3067\u3001\nReactDOM.render \u3067\u306f\u3000ToDoList\u30af\u30e9\u30b9\u3092\u3000render\u3057\u3066\u3082\u3089\u3044\u307e\u3059\u3002\n\u30bd\u30fc\u30b9\u3067\u66f8\u304f\u3068\u3053\u3093\u306a\u611f\u3058\u3002<\/p>\n[bash]\nReactDOM.render(\n ,\n document.getElementById(“root”)\n);<\/p>\n[\/bash]<\/p>\n\u3067\u3001\u3053\u308c\u3060\u3051\u3060\u3068\u3001ToDoList\u306e\u521d\u671f\u5024\u3092\u6e21\u305b\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u306a\u308b\u306e\u3067\u3001\n\u6b63\u3057\u304f\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\u8981\u306f\u30af\u30e9\u30b9\u5185\u3067\u4f7f\u3044\u305f\u3044\u30c7\u30fc\u30bf\u306f \u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u305d\u3046\u306d\u3002\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u30c7\u30fc\u30bf\u3068\u306f\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u3082\u306e\u306a\u306e\u3067\u3000\uff5b\uff5d\u3000\u3067\u62ec\u3063\u3066\u6e21\u305d\u3046\u306d\u3068\u3044\u3046\u30eb\u30fc\u30eb\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n var DATAS = [\n {id:1, content:”Softbank\u89e3\u7d04”},\n {id:2, content:”R-SIM10\u8cfc\u5165”},\n {id:3, content:”\u570f\u5916\u75c5\u3092\u514b\u670d\u3059\u308bSIM\u30d5\u30ea\u30fc\u30eb\u30fc\u30bf\u30fc\u30b2\u30c3\u30c8”},\n {id:4, content:”\u697d\u5929\u30e2\u30d0\u30a4\u30eb\u7533\u3057\u8fbc\u307f”}\n ]<\/p>\n ReactDOM.render(\n ,\n document.getElementById(“root”)\n );\n[\/bash]<\/p>\n\u3067\u3001\u307e\u3060\u3053\u308c\u3067\u3082 DataList\u30af\u30e9\u30b9\u306e\u3000this.props.datas\u3000\u306b DATAS\u306e\u5024\u304c\u6e21\u3063\u3066\u3044\u304f\u4ed5\u7d44\u307f\u304c\u8aac\u660e\u3067\u304d\u3066\u3044\u307e\u305b\u3093\u306d\u3002\nDataList\u30af\u30e9\u30b9\u306f\u3000ToDoList\u30af\u30e9\u30b9\u306e\u5b50\u4f9b\u3067\u3059\u3002\u3064\u307e\u308a DataList\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\n\u4f5c\u6210\u3055\u308c\u3001\u305d\u306e\u6642\u306bDataList\u30af\u30e9\u30b9\u304c\u6271\u3046\u5909\u6570\u3068\u3057\u3066 datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u3092\u6e21\u3059\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u65e5\u672c\u8a9e\u3067\u66f8\u304f\u3068\u3084\u3084\u3053\u3057\u3044\u3067\u3059\u306d\u3002\n\u3064\u307e\u308a\u306f\u3001ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3053\u3068\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n this.state = {\n datas: props.datas\n }\n }<\/p>\n render(){\n return (<\/p>\n\n \n \n <\/div>\n );\n }\n }<\/p>\n[\/bash]<\/p>\nrender\u30e1\u30bd\u30c3\u30c9\u306e\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f\u5909\u6570\u306f\u3001 \u30af\u30e9\u30b9\u5185\u3067 props\uff08\u30d7\u30ed\u30d1\u30c6\u30a3\uff09\u3068\u3057\u3066\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306f datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f DATAS\u5909\u6570\u306e\u4e2d\u8eab\u3092\u81ea\u8eab\u306e\u30af\u30e9\u30b9\u306e state\u3068\u3057\u3066\u7ba1\u7406\u3057\u3088\u3046\u3068\u3057\u307e\u3059\u3002\n\u3053\u308c\u304c constructor\u306e\u4e2d\u306b\u3042\u308b\u3002<\/p>\nthis.state = {datas: this.props.datas};<\/p>\n\u3053\u308c\u3067 ToDoList\u30af\u30e9\u30b9 \u5185\u3067\u306f this.state.datas \u3067 DATAS\u306e\u5185\u5bb9\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3084\u3063\u3068\u3053\u308c\u3067 DataList\u306b DATAS\u306e\u5024\u304c\u6e21\u308b\u3053\u3068\u304c\u8aac\u660e\u3067\u304d\u307e\u3057\u305f\u304b\u306d\u30fb\u30fb\u30fb<\/p>\n\u3067\u306f\u3001\u6b21\u306fDataList\u306e render\u30e1\u30bd\u30c3\u30c9\u3067ToDo\u306e\u4e00\u884c\u4e00\u884c\u3092\u69cb\u6210\u3059\u308bDataLine\u30af\u30e9\u30b9\u3092\u4f5c\u3063\u3066\u3044\u308b\u3068\u3053\u308d\u3092\n\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push();\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n[\/bash]<\/p>\n\u914d\u5217\u5909\u6570 dlist\u306b DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092push\u3057\u3066\u3044\u3063\u3066\u307e\u3059\u306d\u3002\n\u305d\u3057\u3066\u3001DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e data\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u306e\uff11\u884c\u306e\u5024\n\u3064\u307e\u308aToDo\u4e00\u4ef6\u3092\u30c7\u30fc\u30bf\u3068\u3057\u3066\u6e21\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306f this.props.data\u3067\u3053\u306e\u5024\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nkey\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b\u3064\u3044\u3066\u3067\u3059\u304c\u3001ReactJS\u3067\u306f\u7e70\u308a\u8fd4\u3057\u30eb\u30fc\u30d7\u3067\u540c\u3058\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u751f\u6210\n\u3059\u308b\u3068\u304d\u306f\u3001\uff11\u3064\uff11\u3064\u3092\u30e6\u30cb\u30fc\u30af\u306b\u3059\u308b\u5024\u3092\u30ad\u30fc(key)\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\n\u3068\u3044\u3046\u30eb\u30fc\u30eb\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u3053\u3053\u3067\u306f DATAS\u306e\u4e2d\u306e\u30c7\u30fc\u30bf\u306e id\u3092\u30ad\u30fc\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\u3067\u306f\u3001ToDo\u306e\uff11\u4ef6\u306b\u3042\u305f\u308bDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u306a\u306b\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb<\/p>\n[bash]\n class DataLine extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n render(){\n return (<\/p>\n\n \u524a\u9664<\/button>\n {this.props.data.id} — {this.props.data.content}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u306e\u3088\u3046\u306bDataLine\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u30dc\u30bf\u30f3\uff11\u3064\u3068\u3001\u6587\u5b57\u5217\u3068\u3057\u3066\u306e\u30c7\u30fc\u30bf\u306eid\u3068content\u3092\u51fa\u529b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\u3053\u3053\u307e\u3067\u3067\u3001\u3088\u3046\u3084\u304f\u3001ToDoList\u3067\u524a\u9664\u30dc\u30bf\u30f3\u4ed8\u304d\u306e\u4e00\u89a7\u304c\u3067\u304d\u307e\u3057\u305f\u3002\n\u3067\u3082\u3001\u3053\u308c\u3058\u3083\u307e\u3060ToDo\u3082\u8ffd\u52a0\u3067\u304d\u306a\u3044\u3057\u3001\u524a\u9664\u3082\u3067\u304d\u306a\u3044\u3002<\/p>\n\u307e\u305a\u306f\u3001\u524a\u9664\u306e\u65b9\u306e\u8aac\u660e\u306b\u5165\u308a\u307e\u3057\u3087\u3046\u3002\n\u3067\u3001\u524a\u9664\u3092\u8003\u3048\u308b\u524d\u306b\u3001ReactJS\u3067\u30a2\u30d7\u30ea\u3092\u69cb\u7bc9\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u8aac\u660e\u3057\u3066\u304a\u304d\u307e\u3059\u3002\n\u30a2\u30d7\u30ea\u306f\u3069\u3093\u306a\u30d1\u30fc\u30c4\u3067\u69cb\u6210\u3055\u308c\u308b\u304b\u30fb\u30fb\u30fb\u3001\u3053\u308c\u306f\u3082\u3046\u8aac\u660e\u6e08\u307f\u3067\u3059\u306d\u3002\n\u6b21\u306b\u30a2\u30d7\u30ea\u3067\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5024\u3067\u7ba1\u7406\u3057\u3066\u3044\u304b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\u306f\u4f55\u304b\u30fb\u30fb\u30fb\n\u3053\u308c\u3092\u8003\u3048\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5024\u3067\u3001\u7ba1\u7406\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\uff1d\u30b9\u30c6\u30fc\u30c8(state\uff09\n<\/h4>\n\u306a\u3093\u3067\u3059\u3002\n\u305d\u3057\u3066\u3001\u3082\u3046\u3061\u3087\u3063\u3068\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u30fb\u30fb\u30fb\u3001\u4ed6\u306e\u5024\u304b\u3089\u8a08\u7b97\u3057\u305f\u308a\u3057\u3066\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u5024\u306f\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u306f\u7ba1\u7406\u3057\u307e\u305b\u3093\u3002\n\u3069\u3046\u8a08\u7b97\u3057\u3088\u3046\u3068\u3057\u3066\u3082\u3001\u3069\u3053\u304b\u3089\u3082\u5c0e\u304d\u51fa\u305b\u306a\u3044\u5909\u5316\u3059\u308b\u5024\u306e\u307f\u3092\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\u3055\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306b\u304a\u3044\u3066\u30b9\u30c6\u30fc\u30c8\u306f\u306a\u306b\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb<\/p>\n\u307e\u305a\u5f53\u7136\u3067\u3059\u304cToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf\u3067\u3059\u306d\u3002\n\u305d\u3057\u3066\u3082\u3046\u3072\u3068\u3064\u3001ToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024\u3067\u3059\u3002\n\u305d\u3057\u3066\u305d\u3057\u3066\u3001\u6700\u5f8c\u306b\u3082\u3046\u3072\u3068\u3064\u3002ToDo\u30ea\u30b9\u30c8\uff11\u4ef6\uff11\u4ef6\u306f\u30e6\u30cb\u30fc\u30af\u306a\u3082\u306e\u306a\u306e\u3067\u3001\nToDo\uff11\u4ef6\u306b\u5bfe\u3057\u3066\uff11\u3064\u306eID\u3092\u6301\u3061\u307e\u3059\u3002\u305d\u306eID\u306f\u91cd\u8907\u3057\u3066\u306f\u3044\u3051\u306a\u3044\u306e\u3067\u3000ID\u306e\u6700\u5927\u5024\u3092\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\u3067\u3001\u307e\u305f\u307e\u305f\u3053\u3053\u3082\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb\u30fb\n\u30b9\u30c6\u30fc\u30c8\u3092\u8ab0\u304c\u3001\u3064\u307e\u308a\u3069\u306e\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u304b\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb<\/p>\n\u4e00\u756a\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306b\u3042\u308b\u30af\u30e9\u30b9\u304c\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3059\u308b<\/h4>\n\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u3001\u672c\u5f53\u306f\u3053\u308c\u306f\u5618\u3060\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u6163\u308c\u306a\u3044\u3046\u3061\u306f\n\u4e00\u756a\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u308b\u306e\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002\n\u3064\u307e\u308a\u4eca\u56de\u306eToDo\u30ea\u30b9\u30c8\u3067\u8a00\u3046\u3068\u3000ToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }\n[\/bash]<\/p>\n\u3088\u3063\u3066 ToDoList\u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u4e0a\u8a18\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\uff08\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u306f\u30b9\u30c6\u30fc\u30c8\u3067\u7ba1\u7406\u3059\u308b\u5024\u306e\u521d\u671f\u5024\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\uff09<\/p>\nthis.state = \uff5b\u30b9\u30c6\u30fc\u30c8\u3067\u7ba1\u7406\u3059\u308b\u5909\u6570\u7fa4\uff5d<\/h4>\n\u305d\u3057\u3066\u3001 this.state = \u3068\u8a18\u8ff0\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u8a2d\u5b9a\u3067\u304d\u308b\u306e\u306f\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3060\u3051\u3060\u3068\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nReactJS\u3067\u306f\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u304c\u5909\u5316\u3059\u308b\u3068\u5fc5\u8981\u306a\u3068\u3053\u308d\u3060\u3051\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3092\u81ea\u52d5\u3067\u884c\u3044\u307e\u3059\u3002\n\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u30bb\u30c3\u30c8\u3057\u3066\u81ea\u52d5\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u306b\u306f\n\u30af\u30e9\u30b9\u306e\u3000setState\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002\n\u4f8b\u3048\u3070\u3001ToDo\u30ea\u30b9\u30c8\u306e\u6700\u5927ID(maxId)\u3092\u5909\u5316\u3055\u305b\u3088\u3046\u3068\u3059\u308b\u306a\u3089\u3070\n\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3059\u308b\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067<\/p>\n[bash]\nthis.setState({maxId: xxxx});\n[\/bash]<\/p>\n\u3068\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nID\u306e\u6700\u5927\u5024\u3092\u5909\u3048\u3066\u3082\u3001\u753b\u9762\u4e0a\u5909\u5316\u3059\u308b\u5fc5\u8981\u306e\u3042\u308b\u3068\u3053\u308d\u306f\u306a\u3044\u306e\u3067ReactJS\u306f\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u306e\u307f\u3092\u5909\u5316\u3055\u305b\u3001\u306a\u306b\u3082\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306f\u884c\u3044\u307e\u305b\u3093\u3002<\/p>\nToDo\u30ea\u30b9\u30c8\u304b\u3089\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u3053\u3068\u3092\u8003\u3048\u308b\u3068\u30fb\u30fb\u30fb\nToDoList\u30af\u30e9\u30b9\u5185\u306e\u4f55\u3089\u304b\u306e\u30e1\u30bd\u30c3\u30c9\u3067<\/p>\n[bash]\nvar newDatas = [];\nvar i;<\/p>\nfor (i = 0 ; i < this.state.datas.length ; i++){\n var data = this.state.datas[i];\n if (data.id != \u524a\u9664\u3059\u308bID){\n newDatas.push(data);\n }\n}<\/p>\nthis.setState({datas: newDatas});\n[\/bash]<\/p>\n\u3068\u3057\u3066\u3084\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\nReactJS\u304c\u7ba1\u7406\u3059\u308b datas\u30b9\u30c6\u30fc\u30c8\u304c\u5909\u5316\u3059\u308b\u3068\u3001\u305d\u306e\u5909\u6570\u306e\u5024\u3092\u4f7f\u3063\u3066\n\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u90e8\u5206\u304c\u81ea\u52d5\u7684\u306b\u8abf\u6574\u3055\u308c\u308b\u306e\u3067\u3059\u3002\n\u4f8b\u3048\u3070 jQuery\u306a\u3093\u304b\u3067\u540c\u3058\u3088\u3046\u306a\u3053\u3068\u3092\u3057\u3088\u3046\u3068\u601d\u3048\u3070\u3001\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u306e\u30bf\u30b0\u306e\u5b50\u4f9b\u3092\uff08ToDo\uff11\u4ef6\uff09\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\n\u4e0d\u8981\u306a\u884c\u306eHTML\u30bf\u30b0\u3092 remove\u3059\u308b\u306a\u3069\u3067\u3059\u306d\u3002<\/p>\n\u3067\u306f\u6b21\u306b\u30da\u30fc\u30b8\u4e0a\u3067\u8d77\u3053\u308b\u30a4\u30d9\u30f3\u30c8\u306f\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u6271\u3046\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\n\u307e\u305a\u3001ToDo\u4e00\u4ef6\u3092\u524a\u9664\u3059\u308b\u51e6\u7406\u3001\u3064\u307e\u308aToDo\u30ea\u30b9\u30c8\u306e\u5de6\u5074\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308b\n\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u305f\u51e6\u7406\u3092\u3069\u3053\u306b\u8a18\u8ff0\u3057\u3066\u3001\u30af\u30ea\u30c3\u30af\u306b\u3088\u3063\u3066\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u306fDataLine\u30af\u30e9\u30b9\u5185\u3067\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\n\u5f53\u7136\u30af\u30ea\u30c3\u30af\u30a4\u30d9\u30f3\u30c8\u306e\u51e6\u7406\u306fDataLine\u30af\u30e9\u30b9\u5185\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\u3069\u3046\u66f8\u304f\u304b\u3068\u3044\u3046\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class DataLine extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleClick()}>\u524a\u9664<\/button>\n {this.props.data.id} — {this.props.data.content}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u3053\u306f\u7d50\u69cb\u666e\u901a\u306a\u306e\u3067\u3059\u304c\u3001\u524a\u9664\u30dc\u30bf\u30f3\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u3044\u308b\u90e8\u5206\u3067\nonClick\u30a4\u30d9\u30f3\u30c8\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nReactJS\u3067\u306f onclick<\/strong>\u3067\u306f\u306a\u304f\u3001onClick<\/strong>\u3067\u3059\u3002\n\u305d\u3057\u3066onClick\u3092\u51e6\u7406\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e handleClick\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u307e\u3059\u3002<\/p>\n\u3067\u3001handelClick\u30e1\u30bd\u30c3\u30c9\u5185\u306e\u8a18\u8ff0\u3092\u898b\u3066\u307f\u308b\u3068<\/p>\n[bash]\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }\n[\/bash]<\/p>\n\u3068\u306a\u3063\u3066\u3044\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306edatas\u3000\u3092\u524a\u9664\u3057\u3066\u3044\u307e\u305b\u3093\u306d\u3002\n\u306a\u305c\u304b\u3068\u3044\u3046\u3068\u3001\u4eca\u56de\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u306f\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9ToDoList\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3057\u3066\u3044\u308b\u304b\u3089\u30fb\u30fb\n\u305d\u306e\u5909\u6570\u3092\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u3001\u524a\u9664\u3067\u304d\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3069\u3046\u3059\u308b\u304b\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u51e6\u7406\u3067\u304d\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306b\u304a\u9858\u3044\u3059\u308c\u3070\u826f\u3044<\/h4>\n[bash]\nthis.props.onDelete(this.props.data.id);\n[\/bash] <\/p>\n\u3053\u308c\u306f\u3001\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b onDelete\u3068\u3044\u3046\u306e\u3092\u4f5c\u308b\u3068\u3044\u3046\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\n\u305d\u3057\u3066\u305d\u308c\u306f\u5909\u6570\u3092\u7ba1\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u306f\u306a\u304f\u3066\u3001\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3060\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u96e3\u3057\u3044\u3067\u3059\u306d\u3002\u304b\u306a\u308a\u9811\u5f35\u3063\u3066\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nDataLine\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3042\u308b\u3002\n\u3067\u30fb\u30fb\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u3092DataLine\u30af\u30e9\u30b9\u3088\u308a\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u51e6\u7406\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308b\u304b\u3068\u3044\u3046\u3068\nDataLine\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u90e8\u5206\u306b\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3068\u3057\u3066\u3001\u4e0a\u4f4d\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002\n\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \u30b9\u30c6\u30fc\u30c8\u3092\u306a\u3093\u3068\u304b\u524a\u9664\u3057\u3088\u3046\u3068\u52aa\u529b\u3059\u308b\u3002\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u4eca\u56de\u306e\u4f8b\u3067\u8a00\u3046\u3068\u3001DataLine\u306e\uff11\u3064\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306f DataList\u30af\u30e9\u30b9\u306a\u306e\u3067\u30fb\u30fb\u30fb\n\u30c7\u30fc\u30bf\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u5909\u6570\u3092\u53c2\u7167\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\u51fa\u6765\u306a\u3044\uff1f\uff1f\uff1f\uff1f<\/p>\n\u3068\u601d\u3046\u65b9\u3082\u3044\u3089\u3063\u3057\u3083\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\nDataList\u306f\u30c7\u30fc\u30bf\u306e\u4e00\u89a7\u3092\u51fa\u529b\u3057\u3066\u308b\u3093\u3060\u304b\u3089\u3001\u5909\u6570\u306e\u5024\u3092\u524a\u9664\u3067\u304d\u308b\u3058\u3083\u3093\u3002\n\u305d\u3046\u601d\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002<\/p>\n\u3067\u3082 ReactJS\u306e\u9244\u5247<\/p>\n\u30b9\u30c6\u30fc\u30c8\u306f\u6700\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b<\/h4>\nDataList\u306f\u6700\u4e0a\u4f4d\u3058\u3083\u3042\u308a\u307e\u305b\u3093\u306d\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3057\u3066\u3044\u306a\u3044\u3002\n\u306a\u306e\u3067\u3001\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u524a\u9664\u3067\u304d\u307e\u305b\u3093\u3002\n\u4e00\u89a7\u30c7\u30fc\u30bf\u306f\u30b9\u30c6\u30fc\u30c8(state)\u3067\u306f\u306a\u304f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3(props)\u3067\u53c2\u7167\u3067\u304d\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3058\u3083\u3042\u56f0\u3063\u305f\u30fb\u30fb\u30fb\u3000\u3069\u3046\u3059\u308a\u3083\u3044\u3044\u3093\u3060\u3068\u306a\u308a\u307e\u3059\u304c\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3053\u3068\u304c\u51fa\u6765\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308a\u3083\u3044\u3044<\/h4>\n\u3067\u3001\u4f1d\u3048\u308b\u65b9\u6cd5\u3067\u3059\u304c\u3001\u3053\u308c\u306fDataLine\u30af\u30e9\u30b9\u306e onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u540c\u3058\u3067\u3001\nDataList\u30af\u30e9\u30b9\u306b\u3082 onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f5c\u308a\u3001\u305d\u3053\u3092\u7d4c\u7531\u3057\u3066\u3001\u6700\u4e0a\u4f4d\u306e\nToDoList\u30af\u30e9\u30b9\u306b\u60c5\u5831\u3092\u4f1d\u3048\u308a\u3083\u3044\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u3067\u306f\u3001\u5148\u307b\u3069\u306e\u90e8\u5206\u3092\u66f8\u304d\u63db\u3048\u3066\u307f\u307e\u3059\u3002<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \/\/\u30b9\u30c6\u30fc\u30c8\u3092\u76f4\u63a5\u524a\u9664\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308b\u3002\n this.props.onDelete(id);\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3067\u3001DataList\u30af\u30e9\u30b9\u306e\u4e0a\u4f4d\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306a\u306e\u3067\u3001\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067 DataList\u30af\u30e9\u30b9\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u969b\u306b\nonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u3092 ToDoList\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9\u3078\u8ee2\u9001\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f\u3001<\/p>\n[bash]\n class ToDoList extends React.Component{<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n \n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\n\u306a\u306b\u3092\u3057\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u3000DataList\u30af\u30e9\u30b9\u5185\u3067\u8d77\u3053\u3063\u305f\u3000onDelete\u30a4\u30d9\u30f3\u30c8\u306f\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9 handleOnDelete\u3067\u51e6\u7406\u3059\u308b\u3088\u3002\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\nToDoList\u30af\u30e9\u30b9\u306ehandleOnDelete\u3067\u306f\u3001\u3088\u3046\u3084\u304f ToDo\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\n\u3067\u304d\u308b\u306e\u3067\u3001\u3044\u3088\u3044\u3088\u3053\u3053\u3067\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u307e\u3059\u3002<\/p>\nhandleOnDelete\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3092\u898b\u3066\u3044\u305f\u3060\u304f\u3068\u30fb\u30fb\u30fb\nstate.datas\u3000\u3092\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\u3001\u305d\u306e\u30c7\u30fc\u30bf\u306eid\u304c\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3063\u3066\u304d\u305f\u3002\n\u524a\u9664\u5bfe\u8c61ID\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3001\u5bfe\u8c61\u5916\u306a\u3089\u65b0\u305f\u306a\u914d\u5217\u5909\u6570\u306bpush\u3059\u308b\u3002<\/p>\n\u305d\u3057\u3066\u3001\u5168\u30c7\u30fc\u30bf\u306e\u30eb\u30fc\u30d7\u304c\u7d42\u308f\u3063\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067<\/p>\n[bash]\n this.setState({datas: newDatas});\n[\/bash]<\/p>\n\u3068\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u66f4\u3092ReactJS\u306b\u901a\u77e5\u3057\u3066\u3044\u307e\u3059\u3002\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u7406\u89e3\u3067\u304d\u307e\u3057\u305f\u304b\uff1f\uff1f<\/p>\n\u3067\u306f\u6b21\u884c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002\n\u3044\u3088\u3044\u3088ToDo\u306e\u8ffd\u52a0\u3067\u3059\u3002<\/p>\n\u8ffd\u52a0\u306f NewToDo\u30af\u30e9\u30b9\u3067\u884c\u3044\u307e\u3059\u3002<\/p>\n[bash]\n class NewToDo extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleClick(){\n this.props.onAdd();\n }<\/p>\n handleChange(event){\n var val = event.target.value;\n this.props.onContentChange(val);\n }<\/p>\n render(){\n return (<\/p>\n\n \u30b3\u30f3\u30c6\u30f3\u30c4<\/label>\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3044\u304d\u306a\u308a\u30bd\u30fc\u30b9\u5168\u90e8\u8cbc\u308a\u4ed8\u3051\u305f\u306e\u3067 \u304e\u3087\u3063\u3068\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u30fb\u30fb\u30fb\n\u3053\u3053\u307e\u3067\u306e\u3053\u3068\u304c\u7406\u89e3\u3067\u304d\u3066\u3044\u305f\u3089\u306a\u3093\u3068\u304b\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u307e\u305a\u306f render\u30e1\u30bd\u30c3\u30c9\u304b\u3089\u8aac\u660e\u3002<\/p>\ndiv\u30bf\u30b0\u306e\u4e2d\u306blabel\uff11\u3064\u3068\u3001input\uff11\u3064\u3068button\uff11\u3064\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u307e\u3059\u3002\nlabel\u306f\u5358\u306a\u308b\u76ee\u5370\u306a\u306e\u3067\u8aac\u660e\u306f\u7701\u7565\u3059\u308b\u3068\u3057\u3066\u30fb\u30fb\u30fb<\/p>\ninput \u306fToDo\u306e\u4e2d\u8eab\u3092\u8a18\u8ff0\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u3067\u3059\u3002\nbutton \u306fToDo\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u30dc\u30bf\u30f3\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3053\u3053\u3067\u6539\u3081\u3066ToDoList\u5168\u4f53\u304c\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u304c\u4f55\u3060\u3063\u305f\u304b\u601d\u3044\u51fa\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf<\/li>\nToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024<\/li>\n\u30c7\u30fc\u30bf\u306eID\u306e\u6700\u5927\u5024<\/li>\n<\/ul>\n\u305d\u3057\u3066\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf\u306f\u3059\u3079\u3066\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9 ToDoList\u3067\u7ba1\u7406\u3055\u308c\u308b\u306e\u3067\u3057\u305f\u3002\n\u3064\u307e\u308aNewToDo\u30af\u30e9\u30b9\u306e input \u306b\u5165\u529b\u3055\u308c\u305f\u5024\u306f\u3001NewToDo\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b\u306e\u3067\u306f\u306a\u304f\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\n\u305d\u3057\u3066\u3001NewToDo\u30af\u30e9\u30b9\u306ebutton\u30af\u30ea\u30c3\u30af\u3067ToDo\u30ea\u30b9\u30c8\u306b\u8ffd\u52a0\u3057\u305f\u3044\u304c\u3001\u3053\u308c\u3082\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u3053\u3068\u3092\u901a\u77e5\u3057\u3066\u3001\u51e6\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n\u3053\u306e\u3053\u3068\u304c<\/p>\n[bash]\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n[\/bash]<\/p>\ninput\u3067\u306f onChange \u3064\u307e\u308a\u5024\u304c\uff11\u6587\u5b57\u3067\u3082\u5909\u5316\u3059\u308b\u305f\u3073\u306b\u3001\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002\n\u30dc\u30bf\u30f3\u306e\u30af\u30ea\u30c3\u30af\u306f click\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002<\/p>\n\u3053\u308c\u3060\u3051\u3067\u3059\u3002NewToDo\u30af\u30e9\u30b9\u306f\u81ea\u5206\u3067\u3059\u308b\u3053\u3068\u306f\u3001\u307b\u3068\u3093\u3069\u306a\u306b\u3082\u3042\u308a\u307e\u305b\u3093\u3002\n\u5909\u5316\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u304c\u3042\u3063\u305f\u3053\u3068\u3092\u89aa\u30af\u30e9\u30b9\u3078\u901a\u77e5\u3057\u3066\u3044\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3067\u306f\u6700\u5f8c\u3001\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e ToDoList\u30af\u30e9\u30b9\u3092\u8997\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }<\/p>\n handleContentChange(ct){\n this.setState({content: ct});\n }<\/p>\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleOnAdd()}\n onContentChange={(ct) => this.handleContentChange(ct)}\n \/>\n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u307e\u305a\u6ce8\u76ee\u3057\u3066\u3044\u305f\u3060\u304d\u305f\u3044\u306e\u306f render\u30e1\u30bd\u30c3\u30c9\u3002<\/p>\n\nNewToDo\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\nDataList\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\n<\/ul>\nNewToDo\u30af\u30e9\u30b9\u306e onAdd\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnAdd\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002\nonContentChange\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleContentChange\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnDelete\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u306e\u65b9\u306f\u3059\u3067\u306b\u8aac\u660e\u6e08\u307f\u306a\u306e\u3067\u3001NewToDo\u30af\u30e9\u30b9\u306e\u65b9\u306e\u8aac\u660e\u3092\u3057\u307e\u3059\u3002<\/p>\n[bash]\n handleContentChange(ct){\n this.setState({content: ct});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e input\uff08\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\uff09\u3067\u8d77\u3053\u3063\u305f\u5024\u306e\u5909\u5316\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\nsetState\u30e1\u30bd\u30c3\u30c9\u3067 \u30b9\u30c6\u30fc\u30c8\u3092\u5909\u66f4\u3002<\/p>\n[bash]\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e\u30dc\u30bf\u30f3\u30af\u30ea\u30c3\u30af\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\u3001\n\u6700\u5927\u5024\u3092\uff11\u52a0\u7b97\u3057\u3066\u3001ToDo\u30c7\u30fc\u30bf\u306e\u6700\u5f8c\u5c3e\u306b\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0(push)\u3002<\/p>\n\u305d\u3057\u3066\u3001setState\u3067\u3000maxId\u3068content\u3068datas \u306e\u5909\u66f4\u3092\u4f1d\u3048\nReactJS\u306b\u30ec\u30f3\u30c0\u30fc\u3092\u4f9d\u983c\u3057\u307e\u3059\u3002<\/p>\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u3088\u3046\u3084\u304fToDo\u30ea\u30b9\u30c8\u306e\u5b8c\u6210\u3067\u3059\u3002<\/p>\n\u90e8\u5206\u90e8\u5206\u3092\u5207\u308a\u53d6\u3063\u305f\u30bd\u30fc\u30b9\u3067\u898b\u3065\u3089\u304b\u3063\u305f\u3068\u601d\u3044\u307e\u3059\u306e\u3067\u3001\u5168\u30bd\u30fc\u30b9\u3092\u4ee5\u4e0b\u306b\u8cbc\u308a\u4ed8\u3051\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n[bash]<\/p>\n<\/div>\n
\u30d1\u30fc\u30c4\u306f\u6c7a\u307e\u308a\u307e\u3057\u305f\u306e\u3067\u3001\u3053\u306e\u30d1\u30fc\u30c4\u3092\u30af\u30e9\u30b9\u3068\u3057\u3066\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3059\u3002<\/p>\n
\u307e\u305a\u6700\u521d\u306e\u30d1\u30fc\u30c4 ToDo\u4e00\u89a7\u3092\u3000DataList\u3002\n\u6b21\u306bToDo\u3092\u8ffd\u52a0\u3059\u308b\u30d1\u30fc\u30c4\u3092 NewToDo\u3002\nToDo\u306e\u4e00\u884c\u3092\u69cb\u6210\u3059\u308b\u30d1\u30fc\u30c4\u3092\u3000DataLine\n\u6700\u5f8c\u306b\u3053\u308c\u3089\u5168\u90e8\u3092\u5305\u542b\u3059\u308b ToDoList\u3000\u3068\u3057\u307e\u3059\u3002<\/p>\n
\u56f3\u3067\u66f8\u304f\u3068\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
<\/a><\/p>\n\u3067\u306f\u307e\u305aToDo\u4e00\u89a7\u3067\u3042\u308b\u3000DataList\u3092\u30af\u30e9\u30b9\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n class DataList extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleOnDelete(id){\n this.props.onDelete(id);\n }<\/p>\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push( this.handleOnDelete(id)}\/>);\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u306a\u3093\u306e\u3053\u3068\u304b\u7406\u89e3\u3067\u304d\u307e\u3059\u304b\uff1f \u666e\u901a\u96e3\u3057\u3044\u306a\u3041\u3068\u601d\u3044\u307e\u3059\u3088\u306d\u3002<\/p>\n\u30af\u30e9\u30b9\u5b9a\u7fa9\u306e\u8aac\u660e\u306f HelloWorld\u3092\u51fa\u529b\u3059\u308b\u90e8\u5206\u3067\u3084\u3063\u305f\u306e\u3067\u5272\u611b\u3057\u307e\u3059\u3002<\/p>\n\u3067\u306f \u6b21\u306econstructor\u3000\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb\n\u8981\u306f\u30af\u30e9\u30b9\u306e\u521d\u671f\u5316\u51e6\u7406\u3092\u3053\u3053\u3067\u884c\u3044\u307e\u3059\u3088\u3000\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb\n\u521d\u671f\u5316\u3067\u3059\u308b\u3053\u3068\u306f\u7279\u306b\u306a\u3044\u306e\u3067\u3001\u304a\u6c7a\u307e\u308a\u306e\u304a\u307e\u3058\u306a\u3044 super(props)\u3060\u3051\u3092\u8a18\u8ff0\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n[bash]\n constructor(props){\n super(props);\n }\n[\/bash]<\/p>\n\u6b21\u306e handleOnDelete \u3053\u308c\u306a\u3093\u3067\u3059\u304c\u30fb\u30fb \u5fc5\u8981\u3067\u3059\u304c\u3001\u3053\u306e\u8aac\u660e\u306f\u5f8c\u56de\u3057\u306b\u3057\u307e\u3059\u3002<\/p>\n[bash]\n handleOnDelete(id){\n this.props.onDelete(id);\n }\n[\/bash]<\/p>\n\u6700\u5f8c\u306b render\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\nHelloWorld\u3067\u3082\u3084\u3063\u305f\u3088\u3046\u306b\u3001render\u30e1\u30bd\u30c3\u30c9\u3067\u3001\u3053\u306e\u30af\u30e9\u30b9\u304c\u51fa\u529b\u3059\u308b\nHTML\u30bf\u30b0\u3092\u69cb\u7bc9\u3059\u308b\u3093\u3067\u3059\u3002<\/p>\nToDo\u306e\u4e00\u89a7\u306a\u3093\u3067\u3001\u3053\u306e\u30af\u30e9\u30b9\u3092\u4f5c\u308b\u3068\u304d\u306bToDo\u306e\u4e00\u89a7\u3068\u306a\u308b\u30c7\u30fc\u30bf\u3092\u5f15\u304d\u6e21\u3057\u3066\u3082\u3089\u3046\u3053\u3068\u3092\u60f3\u5b9a\u3057\u307e\u3059\u3002\n\u305d\u308c\u304c\u3000this.props.datas\u3000\u3068\u3044\u3046\u5909\u6570\u3067\u53c2\u7167\u3067\u304d\u307e\u3059\u3002<\/p>\nrender\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067\u306f\u3001\u3053\u306e\u5909\u6570\u3092\u30eb\u30fc\u30d7\u3067\u56de\u3057\u3066\u3001 dlist\u3068\u3044\u3046\u5909\u6570\u306b push\u3057\u3066\u3044\u3063\u3066\u307e\u3059\u3002\npush\u3059\u308b\u5185\u5bb9\u306f\u3001ToDo\u306e\uff11\u884c\u3092\u69cb\u6210\u3059\u308b DataLine\u30bf\u30b0\uff08\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u3067\u3059\u3002<\/p>\n\u305d\u3057\u3066 render\u30e1\u30bd\u30c3\u30c9\u304c\u30ea\u30bf\u30fc\u30f3\u3059\u308b\u5185\u5bb9\u306f <div>\u30bf\u30b0\u306e\u4e2d\u306b\u4e0a\u8a18\u306e\u914d\u5217\u5909\u6570\u3092\u7d44\u307f\u8fbc\u3093\u3060\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push( this.handleOnDelete(id)}\/>);\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n[\/bash]<\/p>\n\u809d\u5fc3\u306a\u3053\u3068\u3092\u5fd8\u308c\u3066\u3044\u307e\u3057\u305f\u3002\n\uff13\u3064\u306e\u30d1\u30fc\u30c4\u3092\u5305\u542b\u3059\u308b\u4e00\u756a\u5927\u304d\u306a\u30d1\u30fc\u30c4\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u308c\u3092ToDoList\u30af\u30e9\u30b9\u3068\u3057\u307e\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306e\u30bd\u30fc\u30b9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);<\/p>\n this.state = {\n datas: props.datas\n }\n }<\/p>\n render(){\n return (<\/p>\n\n \n \n <\/div>\n );\n }\n }\n[\/bash]<\/p>\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001NewToDo\u30bf\u30b0\u3068DataList\u30bf\u30b0\u3092\u69cb\u7bc9\u3057\u3066\u3044\u308b\u306e\u304c\u89e3\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u305d\u3057\u3066 DataList\u30bf\u30b0\u306e datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b this.state.datas\u3000\u3092\u6e21\u3057\u3066\u3044\u307e\u3059\u3002\nthis.state.datas\u3000\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\uff1f\nstate\u3068\u306f\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u52d5\u7684\u306a\u5909\u6570\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\nReactJS\u3067\u306f state\u306e\u5024\u304c\u5909\u66f4\u3055\u308c\u308b\u3068\u3001\u81ea\u52d5\u7684\u306b\u305d\u306estate\u306e\u5024\u304c\u6307\u3057\u793a\u3059 HTML\u3092\u66f8\u304d\u63db\u3048\u308b\u4ed5\u7d44\u307f<\/h4>\n\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n\u3067\u3001\u5b9f\u969b\u306b\u3053\u3053\u3067\u306f\u3000this.state.datas\u3000\u306b\u4f55\u304c\u5165\u3063\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u6700\u521d\u306e\u65b9\u3067\u8aac\u660e\u3057\u305f\nToDo\u30ea\u30b9\u30c8\u306e\u4e2d\u8eab\u3067\u3042\u308b DATAS\u5909\u6570\u304c\u5165\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u3053\u308c\u3067\u306f\u8a00\u8449\u8db3\u3089\u305a\u3067\u3059\u306d\u3002\nToDoList\u30af\u30e9\u30b9\u304c\u5168\u30af\u30e9\u30b9\u306e\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u3067\u3042\u308b\u306e\u3067\u3001\nReactDOM.render \u3067\u306f\u3000ToDoList\u30af\u30e9\u30b9\u3092\u3000render\u3057\u3066\u3082\u3089\u3044\u307e\u3059\u3002\n\u30bd\u30fc\u30b9\u3067\u66f8\u304f\u3068\u3053\u3093\u306a\u611f\u3058\u3002<\/p>\n[bash]\nReactDOM.render(\n ,\n document.getElementById(“root”)\n);<\/p>\n[\/bash]<\/p>\n\u3067\u3001\u3053\u308c\u3060\u3051\u3060\u3068\u3001ToDoList\u306e\u521d\u671f\u5024\u3092\u6e21\u305b\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u306a\u308b\u306e\u3067\u3001\n\u6b63\u3057\u304f\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\u8981\u306f\u30af\u30e9\u30b9\u5185\u3067\u4f7f\u3044\u305f\u3044\u30c7\u30fc\u30bf\u306f \u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u305d\u3046\u306d\u3002\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u30c7\u30fc\u30bf\u3068\u306f\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u3082\u306e\u306a\u306e\u3067\u3000\uff5b\uff5d\u3000\u3067\u62ec\u3063\u3066\u6e21\u305d\u3046\u306d\u3068\u3044\u3046\u30eb\u30fc\u30eb\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n var DATAS = [\n {id:1, content:”Softbank\u89e3\u7d04”},\n {id:2, content:”R-SIM10\u8cfc\u5165”},\n {id:3, content:”\u570f\u5916\u75c5\u3092\u514b\u670d\u3059\u308bSIM\u30d5\u30ea\u30fc\u30eb\u30fc\u30bf\u30fc\u30b2\u30c3\u30c8”},\n {id:4, content:”\u697d\u5929\u30e2\u30d0\u30a4\u30eb\u7533\u3057\u8fbc\u307f”}\n ]<\/p>\n ReactDOM.render(\n ,\n document.getElementById(“root”)\n );\n[\/bash]<\/p>\n\u3067\u3001\u307e\u3060\u3053\u308c\u3067\u3082 DataList\u30af\u30e9\u30b9\u306e\u3000this.props.datas\u3000\u306b DATAS\u306e\u5024\u304c\u6e21\u3063\u3066\u3044\u304f\u4ed5\u7d44\u307f\u304c\u8aac\u660e\u3067\u304d\u3066\u3044\u307e\u305b\u3093\u306d\u3002\nDataList\u30af\u30e9\u30b9\u306f\u3000ToDoList\u30af\u30e9\u30b9\u306e\u5b50\u4f9b\u3067\u3059\u3002\u3064\u307e\u308a DataList\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\n\u4f5c\u6210\u3055\u308c\u3001\u305d\u306e\u6642\u306bDataList\u30af\u30e9\u30b9\u304c\u6271\u3046\u5909\u6570\u3068\u3057\u3066 datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u3092\u6e21\u3059\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u65e5\u672c\u8a9e\u3067\u66f8\u304f\u3068\u3084\u3084\u3053\u3057\u3044\u3067\u3059\u306d\u3002\n\u3064\u307e\u308a\u306f\u3001ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3053\u3068\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n this.state = {\n datas: props.datas\n }\n }<\/p>\n render(){\n return (<\/p>\n\n \n \n <\/div>\n );\n }\n }<\/p>\n[\/bash]<\/p>\nrender\u30e1\u30bd\u30c3\u30c9\u306e\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f\u5909\u6570\u306f\u3001 \u30af\u30e9\u30b9\u5185\u3067 props\uff08\u30d7\u30ed\u30d1\u30c6\u30a3\uff09\u3068\u3057\u3066\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306f datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f DATAS\u5909\u6570\u306e\u4e2d\u8eab\u3092\u81ea\u8eab\u306e\u30af\u30e9\u30b9\u306e state\u3068\u3057\u3066\u7ba1\u7406\u3057\u3088\u3046\u3068\u3057\u307e\u3059\u3002\n\u3053\u308c\u304c constructor\u306e\u4e2d\u306b\u3042\u308b\u3002<\/p>\nthis.state = {datas: this.props.datas};<\/p>\n\u3053\u308c\u3067 ToDoList\u30af\u30e9\u30b9 \u5185\u3067\u306f this.state.datas \u3067 DATAS\u306e\u5185\u5bb9\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3084\u3063\u3068\u3053\u308c\u3067 DataList\u306b DATAS\u306e\u5024\u304c\u6e21\u308b\u3053\u3068\u304c\u8aac\u660e\u3067\u304d\u307e\u3057\u305f\u304b\u306d\u30fb\u30fb\u30fb<\/p>\n\u3067\u306f\u3001\u6b21\u306fDataList\u306e render\u30e1\u30bd\u30c3\u30c9\u3067ToDo\u306e\u4e00\u884c\u4e00\u884c\u3092\u69cb\u6210\u3059\u308bDataLine\u30af\u30e9\u30b9\u3092\u4f5c\u3063\u3066\u3044\u308b\u3068\u3053\u308d\u3092\n\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push();\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n[\/bash]<\/p>\n\u914d\u5217\u5909\u6570 dlist\u306b DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092push\u3057\u3066\u3044\u3063\u3066\u307e\u3059\u306d\u3002\n\u305d\u3057\u3066\u3001DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e data\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u306e\uff11\u884c\u306e\u5024\n\u3064\u307e\u308aToDo\u4e00\u4ef6\u3092\u30c7\u30fc\u30bf\u3068\u3057\u3066\u6e21\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306f this.props.data\u3067\u3053\u306e\u5024\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nkey\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b\u3064\u3044\u3066\u3067\u3059\u304c\u3001ReactJS\u3067\u306f\u7e70\u308a\u8fd4\u3057\u30eb\u30fc\u30d7\u3067\u540c\u3058\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u751f\u6210\n\u3059\u308b\u3068\u304d\u306f\u3001\uff11\u3064\uff11\u3064\u3092\u30e6\u30cb\u30fc\u30af\u306b\u3059\u308b\u5024\u3092\u30ad\u30fc(key)\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\n\u3068\u3044\u3046\u30eb\u30fc\u30eb\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u3053\u3053\u3067\u306f DATAS\u306e\u4e2d\u306e\u30c7\u30fc\u30bf\u306e id\u3092\u30ad\u30fc\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\u3067\u306f\u3001ToDo\u306e\uff11\u4ef6\u306b\u3042\u305f\u308bDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u306a\u306b\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb<\/p>\n[bash]\n class DataLine extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n render(){\n return (<\/p>\n\n \u524a\u9664<\/button>\n {this.props.data.id} — {this.props.data.content}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u306e\u3088\u3046\u306bDataLine\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u30dc\u30bf\u30f3\uff11\u3064\u3068\u3001\u6587\u5b57\u5217\u3068\u3057\u3066\u306e\u30c7\u30fc\u30bf\u306eid\u3068content\u3092\u51fa\u529b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\u3053\u3053\u307e\u3067\u3067\u3001\u3088\u3046\u3084\u304f\u3001ToDoList\u3067\u524a\u9664\u30dc\u30bf\u30f3\u4ed8\u304d\u306e\u4e00\u89a7\u304c\u3067\u304d\u307e\u3057\u305f\u3002\n\u3067\u3082\u3001\u3053\u308c\u3058\u3083\u307e\u3060ToDo\u3082\u8ffd\u52a0\u3067\u304d\u306a\u3044\u3057\u3001\u524a\u9664\u3082\u3067\u304d\u306a\u3044\u3002<\/p>\n\u307e\u305a\u306f\u3001\u524a\u9664\u306e\u65b9\u306e\u8aac\u660e\u306b\u5165\u308a\u307e\u3057\u3087\u3046\u3002\n\u3067\u3001\u524a\u9664\u3092\u8003\u3048\u308b\u524d\u306b\u3001ReactJS\u3067\u30a2\u30d7\u30ea\u3092\u69cb\u7bc9\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u8aac\u660e\u3057\u3066\u304a\u304d\u307e\u3059\u3002\n\u30a2\u30d7\u30ea\u306f\u3069\u3093\u306a\u30d1\u30fc\u30c4\u3067\u69cb\u6210\u3055\u308c\u308b\u304b\u30fb\u30fb\u30fb\u3001\u3053\u308c\u306f\u3082\u3046\u8aac\u660e\u6e08\u307f\u3067\u3059\u306d\u3002\n\u6b21\u306b\u30a2\u30d7\u30ea\u3067\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5024\u3067\u7ba1\u7406\u3057\u3066\u3044\u304b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\u306f\u4f55\u304b\u30fb\u30fb\u30fb\n\u3053\u308c\u3092\u8003\u3048\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5024\u3067\u3001\u7ba1\u7406\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\uff1d\u30b9\u30c6\u30fc\u30c8(state\uff09\n<\/h4>\n\u306a\u3093\u3067\u3059\u3002\n\u305d\u3057\u3066\u3001\u3082\u3046\u3061\u3087\u3063\u3068\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u30fb\u30fb\u30fb\u3001\u4ed6\u306e\u5024\u304b\u3089\u8a08\u7b97\u3057\u305f\u308a\u3057\u3066\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u5024\u306f\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u306f\u7ba1\u7406\u3057\u307e\u305b\u3093\u3002\n\u3069\u3046\u8a08\u7b97\u3057\u3088\u3046\u3068\u3057\u3066\u3082\u3001\u3069\u3053\u304b\u3089\u3082\u5c0e\u304d\u51fa\u305b\u306a\u3044\u5909\u5316\u3059\u308b\u5024\u306e\u307f\u3092\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\u3055\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306b\u304a\u3044\u3066\u30b9\u30c6\u30fc\u30c8\u306f\u306a\u306b\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb<\/p>\n\u307e\u305a\u5f53\u7136\u3067\u3059\u304cToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf\u3067\u3059\u306d\u3002\n\u305d\u3057\u3066\u3082\u3046\u3072\u3068\u3064\u3001ToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024\u3067\u3059\u3002\n\u305d\u3057\u3066\u305d\u3057\u3066\u3001\u6700\u5f8c\u306b\u3082\u3046\u3072\u3068\u3064\u3002ToDo\u30ea\u30b9\u30c8\uff11\u4ef6\uff11\u4ef6\u306f\u30e6\u30cb\u30fc\u30af\u306a\u3082\u306e\u306a\u306e\u3067\u3001\nToDo\uff11\u4ef6\u306b\u5bfe\u3057\u3066\uff11\u3064\u306eID\u3092\u6301\u3061\u307e\u3059\u3002\u305d\u306eID\u306f\u91cd\u8907\u3057\u3066\u306f\u3044\u3051\u306a\u3044\u306e\u3067\u3000ID\u306e\u6700\u5927\u5024\u3092\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\u3067\u3001\u307e\u305f\u307e\u305f\u3053\u3053\u3082\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb\u30fb\n\u30b9\u30c6\u30fc\u30c8\u3092\u8ab0\u304c\u3001\u3064\u307e\u308a\u3069\u306e\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u304b\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb<\/p>\n\u4e00\u756a\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306b\u3042\u308b\u30af\u30e9\u30b9\u304c\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3059\u308b<\/h4>\n\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u3001\u672c\u5f53\u306f\u3053\u308c\u306f\u5618\u3060\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u6163\u308c\u306a\u3044\u3046\u3061\u306f\n\u4e00\u756a\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u308b\u306e\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002\n\u3064\u307e\u308a\u4eca\u56de\u306eToDo\u30ea\u30b9\u30c8\u3067\u8a00\u3046\u3068\u3000ToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }\n[\/bash]<\/p>\n\u3088\u3063\u3066 ToDoList\u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u4e0a\u8a18\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\uff08\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u306f\u30b9\u30c6\u30fc\u30c8\u3067\u7ba1\u7406\u3059\u308b\u5024\u306e\u521d\u671f\u5024\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\uff09<\/p>\nthis.state = \uff5b\u30b9\u30c6\u30fc\u30c8\u3067\u7ba1\u7406\u3059\u308b\u5909\u6570\u7fa4\uff5d<\/h4>\n\u305d\u3057\u3066\u3001 this.state = \u3068\u8a18\u8ff0\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u8a2d\u5b9a\u3067\u304d\u308b\u306e\u306f\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3060\u3051\u3060\u3068\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nReactJS\u3067\u306f\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u304c\u5909\u5316\u3059\u308b\u3068\u5fc5\u8981\u306a\u3068\u3053\u308d\u3060\u3051\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3092\u81ea\u52d5\u3067\u884c\u3044\u307e\u3059\u3002\n\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u30bb\u30c3\u30c8\u3057\u3066\u81ea\u52d5\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u306b\u306f\n\u30af\u30e9\u30b9\u306e\u3000setState\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002\n\u4f8b\u3048\u3070\u3001ToDo\u30ea\u30b9\u30c8\u306e\u6700\u5927ID(maxId)\u3092\u5909\u5316\u3055\u305b\u3088\u3046\u3068\u3059\u308b\u306a\u3089\u3070\n\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3059\u308b\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067<\/p>\n[bash]\nthis.setState({maxId: xxxx});\n[\/bash]<\/p>\n\u3068\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nID\u306e\u6700\u5927\u5024\u3092\u5909\u3048\u3066\u3082\u3001\u753b\u9762\u4e0a\u5909\u5316\u3059\u308b\u5fc5\u8981\u306e\u3042\u308b\u3068\u3053\u308d\u306f\u306a\u3044\u306e\u3067ReactJS\u306f\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u306e\u307f\u3092\u5909\u5316\u3055\u305b\u3001\u306a\u306b\u3082\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306f\u884c\u3044\u307e\u305b\u3093\u3002<\/p>\nToDo\u30ea\u30b9\u30c8\u304b\u3089\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u3053\u3068\u3092\u8003\u3048\u308b\u3068\u30fb\u30fb\u30fb\nToDoList\u30af\u30e9\u30b9\u5185\u306e\u4f55\u3089\u304b\u306e\u30e1\u30bd\u30c3\u30c9\u3067<\/p>\n[bash]\nvar newDatas = [];\nvar i;<\/p>\nfor (i = 0 ; i < this.state.datas.length ; i++){\n var data = this.state.datas[i];\n if (data.id != \u524a\u9664\u3059\u308bID){\n newDatas.push(data);\n }\n}<\/p>\nthis.setState({datas: newDatas});\n[\/bash]<\/p>\n\u3068\u3057\u3066\u3084\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\nReactJS\u304c\u7ba1\u7406\u3059\u308b datas\u30b9\u30c6\u30fc\u30c8\u304c\u5909\u5316\u3059\u308b\u3068\u3001\u305d\u306e\u5909\u6570\u306e\u5024\u3092\u4f7f\u3063\u3066\n\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u90e8\u5206\u304c\u81ea\u52d5\u7684\u306b\u8abf\u6574\u3055\u308c\u308b\u306e\u3067\u3059\u3002\n\u4f8b\u3048\u3070 jQuery\u306a\u3093\u304b\u3067\u540c\u3058\u3088\u3046\u306a\u3053\u3068\u3092\u3057\u3088\u3046\u3068\u601d\u3048\u3070\u3001\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u306e\u30bf\u30b0\u306e\u5b50\u4f9b\u3092\uff08ToDo\uff11\u4ef6\uff09\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\n\u4e0d\u8981\u306a\u884c\u306eHTML\u30bf\u30b0\u3092 remove\u3059\u308b\u306a\u3069\u3067\u3059\u306d\u3002<\/p>\n\u3067\u306f\u6b21\u306b\u30da\u30fc\u30b8\u4e0a\u3067\u8d77\u3053\u308b\u30a4\u30d9\u30f3\u30c8\u306f\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u6271\u3046\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\n\u307e\u305a\u3001ToDo\u4e00\u4ef6\u3092\u524a\u9664\u3059\u308b\u51e6\u7406\u3001\u3064\u307e\u308aToDo\u30ea\u30b9\u30c8\u306e\u5de6\u5074\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308b\n\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u305f\u51e6\u7406\u3092\u3069\u3053\u306b\u8a18\u8ff0\u3057\u3066\u3001\u30af\u30ea\u30c3\u30af\u306b\u3088\u3063\u3066\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u306fDataLine\u30af\u30e9\u30b9\u5185\u3067\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\n\u5f53\u7136\u30af\u30ea\u30c3\u30af\u30a4\u30d9\u30f3\u30c8\u306e\u51e6\u7406\u306fDataLine\u30af\u30e9\u30b9\u5185\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\u3069\u3046\u66f8\u304f\u304b\u3068\u3044\u3046\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class DataLine extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleClick()}>\u524a\u9664<\/button>\n {this.props.data.id} — {this.props.data.content}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u3053\u306f\u7d50\u69cb\u666e\u901a\u306a\u306e\u3067\u3059\u304c\u3001\u524a\u9664\u30dc\u30bf\u30f3\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u3044\u308b\u90e8\u5206\u3067\nonClick\u30a4\u30d9\u30f3\u30c8\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nReactJS\u3067\u306f onclick<\/strong>\u3067\u306f\u306a\u304f\u3001onClick<\/strong>\u3067\u3059\u3002\n\u305d\u3057\u3066onClick\u3092\u51e6\u7406\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e handleClick\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u307e\u3059\u3002<\/p>\n\u3067\u3001handelClick\u30e1\u30bd\u30c3\u30c9\u5185\u306e\u8a18\u8ff0\u3092\u898b\u3066\u307f\u308b\u3068<\/p>\n[bash]\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }\n[\/bash]<\/p>\n\u3068\u306a\u3063\u3066\u3044\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306edatas\u3000\u3092\u524a\u9664\u3057\u3066\u3044\u307e\u305b\u3093\u306d\u3002\n\u306a\u305c\u304b\u3068\u3044\u3046\u3068\u3001\u4eca\u56de\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u306f\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9ToDoList\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3057\u3066\u3044\u308b\u304b\u3089\u30fb\u30fb\n\u305d\u306e\u5909\u6570\u3092\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u3001\u524a\u9664\u3067\u304d\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3069\u3046\u3059\u308b\u304b\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u51e6\u7406\u3067\u304d\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306b\u304a\u9858\u3044\u3059\u308c\u3070\u826f\u3044<\/h4>\n[bash]\nthis.props.onDelete(this.props.data.id);\n[\/bash] <\/p>\n\u3053\u308c\u306f\u3001\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b onDelete\u3068\u3044\u3046\u306e\u3092\u4f5c\u308b\u3068\u3044\u3046\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\n\u305d\u3057\u3066\u305d\u308c\u306f\u5909\u6570\u3092\u7ba1\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u306f\u306a\u304f\u3066\u3001\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3060\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u96e3\u3057\u3044\u3067\u3059\u306d\u3002\u304b\u306a\u308a\u9811\u5f35\u3063\u3066\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nDataLine\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3042\u308b\u3002\n\u3067\u30fb\u30fb\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u3092DataLine\u30af\u30e9\u30b9\u3088\u308a\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u51e6\u7406\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308b\u304b\u3068\u3044\u3046\u3068\nDataLine\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u90e8\u5206\u306b\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3068\u3057\u3066\u3001\u4e0a\u4f4d\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002\n\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \u30b9\u30c6\u30fc\u30c8\u3092\u306a\u3093\u3068\u304b\u524a\u9664\u3057\u3088\u3046\u3068\u52aa\u529b\u3059\u308b\u3002\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u4eca\u56de\u306e\u4f8b\u3067\u8a00\u3046\u3068\u3001DataLine\u306e\uff11\u3064\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306f DataList\u30af\u30e9\u30b9\u306a\u306e\u3067\u30fb\u30fb\u30fb\n\u30c7\u30fc\u30bf\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u5909\u6570\u3092\u53c2\u7167\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\u51fa\u6765\u306a\u3044\uff1f\uff1f\uff1f\uff1f<\/p>\n\u3068\u601d\u3046\u65b9\u3082\u3044\u3089\u3063\u3057\u3083\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\nDataList\u306f\u30c7\u30fc\u30bf\u306e\u4e00\u89a7\u3092\u51fa\u529b\u3057\u3066\u308b\u3093\u3060\u304b\u3089\u3001\u5909\u6570\u306e\u5024\u3092\u524a\u9664\u3067\u304d\u308b\u3058\u3083\u3093\u3002\n\u305d\u3046\u601d\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002<\/p>\n\u3067\u3082 ReactJS\u306e\u9244\u5247<\/p>\n\u30b9\u30c6\u30fc\u30c8\u306f\u6700\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b<\/h4>\nDataList\u306f\u6700\u4e0a\u4f4d\u3058\u3083\u3042\u308a\u307e\u305b\u3093\u306d\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3057\u3066\u3044\u306a\u3044\u3002\n\u306a\u306e\u3067\u3001\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u524a\u9664\u3067\u304d\u307e\u305b\u3093\u3002\n\u4e00\u89a7\u30c7\u30fc\u30bf\u306f\u30b9\u30c6\u30fc\u30c8(state)\u3067\u306f\u306a\u304f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3(props)\u3067\u53c2\u7167\u3067\u304d\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3058\u3083\u3042\u56f0\u3063\u305f\u30fb\u30fb\u30fb\u3000\u3069\u3046\u3059\u308a\u3083\u3044\u3044\u3093\u3060\u3068\u306a\u308a\u307e\u3059\u304c\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3053\u3068\u304c\u51fa\u6765\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308a\u3083\u3044\u3044<\/h4>\n\u3067\u3001\u4f1d\u3048\u308b\u65b9\u6cd5\u3067\u3059\u304c\u3001\u3053\u308c\u306fDataLine\u30af\u30e9\u30b9\u306e onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u540c\u3058\u3067\u3001\nDataList\u30af\u30e9\u30b9\u306b\u3082 onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f5c\u308a\u3001\u305d\u3053\u3092\u7d4c\u7531\u3057\u3066\u3001\u6700\u4e0a\u4f4d\u306e\nToDoList\u30af\u30e9\u30b9\u306b\u60c5\u5831\u3092\u4f1d\u3048\u308a\u3083\u3044\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u3067\u306f\u3001\u5148\u307b\u3069\u306e\u90e8\u5206\u3092\u66f8\u304d\u63db\u3048\u3066\u307f\u307e\u3059\u3002<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \/\/\u30b9\u30c6\u30fc\u30c8\u3092\u76f4\u63a5\u524a\u9664\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308b\u3002\n this.props.onDelete(id);\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3067\u3001DataList\u30af\u30e9\u30b9\u306e\u4e0a\u4f4d\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306a\u306e\u3067\u3001\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067 DataList\u30af\u30e9\u30b9\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u969b\u306b\nonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u3092 ToDoList\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9\u3078\u8ee2\u9001\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f\u3001<\/p>\n[bash]\n class ToDoList extends React.Component{<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n \n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\n\u306a\u306b\u3092\u3057\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u3000DataList\u30af\u30e9\u30b9\u5185\u3067\u8d77\u3053\u3063\u305f\u3000onDelete\u30a4\u30d9\u30f3\u30c8\u306f\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9 handleOnDelete\u3067\u51e6\u7406\u3059\u308b\u3088\u3002\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\nToDoList\u30af\u30e9\u30b9\u306ehandleOnDelete\u3067\u306f\u3001\u3088\u3046\u3084\u304f ToDo\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\n\u3067\u304d\u308b\u306e\u3067\u3001\u3044\u3088\u3044\u3088\u3053\u3053\u3067\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u307e\u3059\u3002<\/p>\nhandleOnDelete\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3092\u898b\u3066\u3044\u305f\u3060\u304f\u3068\u30fb\u30fb\u30fb\nstate.datas\u3000\u3092\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\u3001\u305d\u306e\u30c7\u30fc\u30bf\u306eid\u304c\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3063\u3066\u304d\u305f\u3002\n\u524a\u9664\u5bfe\u8c61ID\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3001\u5bfe\u8c61\u5916\u306a\u3089\u65b0\u305f\u306a\u914d\u5217\u5909\u6570\u306bpush\u3059\u308b\u3002<\/p>\n\u305d\u3057\u3066\u3001\u5168\u30c7\u30fc\u30bf\u306e\u30eb\u30fc\u30d7\u304c\u7d42\u308f\u3063\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067<\/p>\n[bash]\n this.setState({datas: newDatas});\n[\/bash]<\/p>\n\u3068\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u66f4\u3092ReactJS\u306b\u901a\u77e5\u3057\u3066\u3044\u307e\u3059\u3002\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u7406\u89e3\u3067\u304d\u307e\u3057\u305f\u304b\uff1f\uff1f<\/p>\n\u3067\u306f\u6b21\u884c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002\n\u3044\u3088\u3044\u3088ToDo\u306e\u8ffd\u52a0\u3067\u3059\u3002<\/p>\n\u8ffd\u52a0\u306f NewToDo\u30af\u30e9\u30b9\u3067\u884c\u3044\u307e\u3059\u3002<\/p>\n[bash]\n class NewToDo extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleClick(){\n this.props.onAdd();\n }<\/p>\n handleChange(event){\n var val = event.target.value;\n this.props.onContentChange(val);\n }<\/p>\n render(){\n return (<\/p>\n\n \u30b3\u30f3\u30c6\u30f3\u30c4<\/label>\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3044\u304d\u306a\u308a\u30bd\u30fc\u30b9\u5168\u90e8\u8cbc\u308a\u4ed8\u3051\u305f\u306e\u3067 \u304e\u3087\u3063\u3068\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u30fb\u30fb\u30fb\n\u3053\u3053\u307e\u3067\u306e\u3053\u3068\u304c\u7406\u89e3\u3067\u304d\u3066\u3044\u305f\u3089\u306a\u3093\u3068\u304b\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u307e\u305a\u306f render\u30e1\u30bd\u30c3\u30c9\u304b\u3089\u8aac\u660e\u3002<\/p>\ndiv\u30bf\u30b0\u306e\u4e2d\u306blabel\uff11\u3064\u3068\u3001input\uff11\u3064\u3068button\uff11\u3064\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u307e\u3059\u3002\nlabel\u306f\u5358\u306a\u308b\u76ee\u5370\u306a\u306e\u3067\u8aac\u660e\u306f\u7701\u7565\u3059\u308b\u3068\u3057\u3066\u30fb\u30fb\u30fb<\/p>\ninput \u306fToDo\u306e\u4e2d\u8eab\u3092\u8a18\u8ff0\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u3067\u3059\u3002\nbutton \u306fToDo\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u30dc\u30bf\u30f3\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3053\u3053\u3067\u6539\u3081\u3066ToDoList\u5168\u4f53\u304c\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u304c\u4f55\u3060\u3063\u305f\u304b\u601d\u3044\u51fa\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf<\/li>\nToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024<\/li>\n\u30c7\u30fc\u30bf\u306eID\u306e\u6700\u5927\u5024<\/li>\n<\/ul>\n\u305d\u3057\u3066\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf\u306f\u3059\u3079\u3066\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9 ToDoList\u3067\u7ba1\u7406\u3055\u308c\u308b\u306e\u3067\u3057\u305f\u3002\n\u3064\u307e\u308aNewToDo\u30af\u30e9\u30b9\u306e input \u306b\u5165\u529b\u3055\u308c\u305f\u5024\u306f\u3001NewToDo\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b\u306e\u3067\u306f\u306a\u304f\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\n\u305d\u3057\u3066\u3001NewToDo\u30af\u30e9\u30b9\u306ebutton\u30af\u30ea\u30c3\u30af\u3067ToDo\u30ea\u30b9\u30c8\u306b\u8ffd\u52a0\u3057\u305f\u3044\u304c\u3001\u3053\u308c\u3082\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u3053\u3068\u3092\u901a\u77e5\u3057\u3066\u3001\u51e6\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n\u3053\u306e\u3053\u3068\u304c<\/p>\n[bash]\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n[\/bash]<\/p>\ninput\u3067\u306f onChange \u3064\u307e\u308a\u5024\u304c\uff11\u6587\u5b57\u3067\u3082\u5909\u5316\u3059\u308b\u305f\u3073\u306b\u3001\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002\n\u30dc\u30bf\u30f3\u306e\u30af\u30ea\u30c3\u30af\u306f click\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002<\/p>\n\u3053\u308c\u3060\u3051\u3067\u3059\u3002NewToDo\u30af\u30e9\u30b9\u306f\u81ea\u5206\u3067\u3059\u308b\u3053\u3068\u306f\u3001\u307b\u3068\u3093\u3069\u306a\u306b\u3082\u3042\u308a\u307e\u305b\u3093\u3002\n\u5909\u5316\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u304c\u3042\u3063\u305f\u3053\u3068\u3092\u89aa\u30af\u30e9\u30b9\u3078\u901a\u77e5\u3057\u3066\u3044\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3067\u306f\u6700\u5f8c\u3001\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e ToDoList\u30af\u30e9\u30b9\u3092\u8997\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }<\/p>\n handleContentChange(ct){\n this.setState({content: ct});\n }<\/p>\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleOnAdd()}\n onContentChange={(ct) => this.handleContentChange(ct)}\n \/>\n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u307e\u305a\u6ce8\u76ee\u3057\u3066\u3044\u305f\u3060\u304d\u305f\u3044\u306e\u306f render\u30e1\u30bd\u30c3\u30c9\u3002<\/p>\n\nNewToDo\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\nDataList\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\n<\/ul>\nNewToDo\u30af\u30e9\u30b9\u306e onAdd\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnAdd\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002\nonContentChange\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleContentChange\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnDelete\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u306e\u65b9\u306f\u3059\u3067\u306b\u8aac\u660e\u6e08\u307f\u306a\u306e\u3067\u3001NewToDo\u30af\u30e9\u30b9\u306e\u65b9\u306e\u8aac\u660e\u3092\u3057\u307e\u3059\u3002<\/p>\n[bash]\n handleContentChange(ct){\n this.setState({content: ct});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e input\uff08\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\uff09\u3067\u8d77\u3053\u3063\u305f\u5024\u306e\u5909\u5316\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\nsetState\u30e1\u30bd\u30c3\u30c9\u3067 \u30b9\u30c6\u30fc\u30c8\u3092\u5909\u66f4\u3002<\/p>\n[bash]\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e\u30dc\u30bf\u30f3\u30af\u30ea\u30c3\u30af\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\u3001\n\u6700\u5927\u5024\u3092\uff11\u52a0\u7b97\u3057\u3066\u3001ToDo\u30c7\u30fc\u30bf\u306e\u6700\u5f8c\u5c3e\u306b\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0(push)\u3002<\/p>\n\u305d\u3057\u3066\u3001setState\u3067\u3000maxId\u3068content\u3068datas \u306e\u5909\u66f4\u3092\u4f1d\u3048\nReactJS\u306b\u30ec\u30f3\u30c0\u30fc\u3092\u4f9d\u983c\u3057\u307e\u3059\u3002<\/p>\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u3088\u3046\u3084\u304fToDo\u30ea\u30b9\u30c8\u306e\u5b8c\u6210\u3067\u3059\u3002<\/p>\n\u90e8\u5206\u90e8\u5206\u3092\u5207\u308a\u53d6\u3063\u305f\u30bd\u30fc\u30b9\u3067\u898b\u3065\u3089\u304b\u3063\u305f\u3068\u601d\u3044\u307e\u3059\u306e\u3067\u3001\u5168\u30bd\u30fc\u30b9\u3092\u4ee5\u4e0b\u306b\u8cbc\u308a\u4ed8\u3051\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n[bash]<\/p>\n<\/div>\n
\u3067\u306f\u307e\u305aToDo\u4e00\u89a7\u3067\u3042\u308b\u3000DataList\u3092\u30af\u30e9\u30b9\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
[bash]\n class DataList extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n
handleOnDelete(id){\n this.props.onDelete(id);\n }<\/p>\n
render() {\n var dlist = [];\n var i;<\/p>\n
for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push( this.handleOnDelete(id)}\/>);\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u306a\u3093\u306e\u3053\u3068\u304b\u7406\u89e3\u3067\u304d\u307e\u3059\u304b\uff1f \u666e\u901a\u96e3\u3057\u3044\u306a\u3041\u3068\u601d\u3044\u307e\u3059\u3088\u306d\u3002<\/p>\n\u30af\u30e9\u30b9\u5b9a\u7fa9\u306e\u8aac\u660e\u306f HelloWorld\u3092\u51fa\u529b\u3059\u308b\u90e8\u5206\u3067\u3084\u3063\u305f\u306e\u3067\u5272\u611b\u3057\u307e\u3059\u3002<\/p>\n\u3067\u306f \u6b21\u306econstructor\u3000\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb\n\u8981\u306f\u30af\u30e9\u30b9\u306e\u521d\u671f\u5316\u51e6\u7406\u3092\u3053\u3053\u3067\u884c\u3044\u307e\u3059\u3088\u3000\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb\n\u521d\u671f\u5316\u3067\u3059\u308b\u3053\u3068\u306f\u7279\u306b\u306a\u3044\u306e\u3067\u3001\u304a\u6c7a\u307e\u308a\u306e\u304a\u307e\u3058\u306a\u3044 super(props)\u3060\u3051\u3092\u8a18\u8ff0\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n[bash]\n constructor(props){\n super(props);\n }\n[\/bash]<\/p>\n\u6b21\u306e handleOnDelete \u3053\u308c\u306a\u3093\u3067\u3059\u304c\u30fb\u30fb \u5fc5\u8981\u3067\u3059\u304c\u3001\u3053\u306e\u8aac\u660e\u306f\u5f8c\u56de\u3057\u306b\u3057\u307e\u3059\u3002<\/p>\n[bash]\n handleOnDelete(id){\n this.props.onDelete(id);\n }\n[\/bash]<\/p>\n\u6700\u5f8c\u306b render\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\nHelloWorld\u3067\u3082\u3084\u3063\u305f\u3088\u3046\u306b\u3001render\u30e1\u30bd\u30c3\u30c9\u3067\u3001\u3053\u306e\u30af\u30e9\u30b9\u304c\u51fa\u529b\u3059\u308b\nHTML\u30bf\u30b0\u3092\u69cb\u7bc9\u3059\u308b\u3093\u3067\u3059\u3002<\/p>\nToDo\u306e\u4e00\u89a7\u306a\u3093\u3067\u3001\u3053\u306e\u30af\u30e9\u30b9\u3092\u4f5c\u308b\u3068\u304d\u306bToDo\u306e\u4e00\u89a7\u3068\u306a\u308b\u30c7\u30fc\u30bf\u3092\u5f15\u304d\u6e21\u3057\u3066\u3082\u3089\u3046\u3053\u3068\u3092\u60f3\u5b9a\u3057\u307e\u3059\u3002\n\u305d\u308c\u304c\u3000this.props.datas\u3000\u3068\u3044\u3046\u5909\u6570\u3067\u53c2\u7167\u3067\u304d\u307e\u3059\u3002<\/p>\nrender\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067\u306f\u3001\u3053\u306e\u5909\u6570\u3092\u30eb\u30fc\u30d7\u3067\u56de\u3057\u3066\u3001 dlist\u3068\u3044\u3046\u5909\u6570\u306b push\u3057\u3066\u3044\u3063\u3066\u307e\u3059\u3002\npush\u3059\u308b\u5185\u5bb9\u306f\u3001ToDo\u306e\uff11\u884c\u3092\u69cb\u6210\u3059\u308b DataLine\u30bf\u30b0\uff08\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u3067\u3059\u3002<\/p>\n\u305d\u3057\u3066 render\u30e1\u30bd\u30c3\u30c9\u304c\u30ea\u30bf\u30fc\u30f3\u3059\u308b\u5185\u5bb9\u306f <div>\u30bf\u30b0\u306e\u4e2d\u306b\u4e0a\u8a18\u306e\u914d\u5217\u5909\u6570\u3092\u7d44\u307f\u8fbc\u3093\u3060\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push( this.handleOnDelete(id)}\/>);\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n[\/bash]<\/p>\n\u809d\u5fc3\u306a\u3053\u3068\u3092\u5fd8\u308c\u3066\u3044\u307e\u3057\u305f\u3002\n\uff13\u3064\u306e\u30d1\u30fc\u30c4\u3092\u5305\u542b\u3059\u308b\u4e00\u756a\u5927\u304d\u306a\u30d1\u30fc\u30c4\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u308c\u3092ToDoList\u30af\u30e9\u30b9\u3068\u3057\u307e\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306e\u30bd\u30fc\u30b9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);<\/p>\n this.state = {\n datas: props.datas\n }\n }<\/p>\n render(){\n return (<\/p>\n\n \n \n <\/div>\n );\n }\n }\n[\/bash]<\/p>\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001NewToDo\u30bf\u30b0\u3068DataList\u30bf\u30b0\u3092\u69cb\u7bc9\u3057\u3066\u3044\u308b\u306e\u304c\u89e3\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u305d\u3057\u3066 DataList\u30bf\u30b0\u306e datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b this.state.datas\u3000\u3092\u6e21\u3057\u3066\u3044\u307e\u3059\u3002\nthis.state.datas\u3000\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\uff1f\nstate\u3068\u306f\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u52d5\u7684\u306a\u5909\u6570\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\nReactJS\u3067\u306f state\u306e\u5024\u304c\u5909\u66f4\u3055\u308c\u308b\u3068\u3001\u81ea\u52d5\u7684\u306b\u305d\u306estate\u306e\u5024\u304c\u6307\u3057\u793a\u3059 HTML\u3092\u66f8\u304d\u63db\u3048\u308b\u4ed5\u7d44\u307f<\/h4>\n\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n\u3067\u3001\u5b9f\u969b\u306b\u3053\u3053\u3067\u306f\u3000this.state.datas\u3000\u306b\u4f55\u304c\u5165\u3063\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u6700\u521d\u306e\u65b9\u3067\u8aac\u660e\u3057\u305f\nToDo\u30ea\u30b9\u30c8\u306e\u4e2d\u8eab\u3067\u3042\u308b DATAS\u5909\u6570\u304c\u5165\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u3053\u308c\u3067\u306f\u8a00\u8449\u8db3\u3089\u305a\u3067\u3059\u306d\u3002\nToDoList\u30af\u30e9\u30b9\u304c\u5168\u30af\u30e9\u30b9\u306e\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u3067\u3042\u308b\u306e\u3067\u3001\nReactDOM.render \u3067\u306f\u3000ToDoList\u30af\u30e9\u30b9\u3092\u3000render\u3057\u3066\u3082\u3089\u3044\u307e\u3059\u3002\n\u30bd\u30fc\u30b9\u3067\u66f8\u304f\u3068\u3053\u3093\u306a\u611f\u3058\u3002<\/p>\n[bash]\nReactDOM.render(\n ,\n document.getElementById(“root”)\n);<\/p>\n[\/bash]<\/p>\n\u3067\u3001\u3053\u308c\u3060\u3051\u3060\u3068\u3001ToDoList\u306e\u521d\u671f\u5024\u3092\u6e21\u305b\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u306a\u308b\u306e\u3067\u3001\n\u6b63\u3057\u304f\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\u8981\u306f\u30af\u30e9\u30b9\u5185\u3067\u4f7f\u3044\u305f\u3044\u30c7\u30fc\u30bf\u306f \u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u305d\u3046\u306d\u3002\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u30c7\u30fc\u30bf\u3068\u306f\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u3082\u306e\u306a\u306e\u3067\u3000\uff5b\uff5d\u3000\u3067\u62ec\u3063\u3066\u6e21\u305d\u3046\u306d\u3068\u3044\u3046\u30eb\u30fc\u30eb\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n var DATAS = [\n {id:1, content:”Softbank\u89e3\u7d04”},\n {id:2, content:”R-SIM10\u8cfc\u5165”},\n {id:3, content:”\u570f\u5916\u75c5\u3092\u514b\u670d\u3059\u308bSIM\u30d5\u30ea\u30fc\u30eb\u30fc\u30bf\u30fc\u30b2\u30c3\u30c8”},\n {id:4, content:”\u697d\u5929\u30e2\u30d0\u30a4\u30eb\u7533\u3057\u8fbc\u307f”}\n ]<\/p>\n ReactDOM.render(\n ,\n document.getElementById(“root”)\n );\n[\/bash]<\/p>\n\u3067\u3001\u307e\u3060\u3053\u308c\u3067\u3082 DataList\u30af\u30e9\u30b9\u306e\u3000this.props.datas\u3000\u306b DATAS\u306e\u5024\u304c\u6e21\u3063\u3066\u3044\u304f\u4ed5\u7d44\u307f\u304c\u8aac\u660e\u3067\u304d\u3066\u3044\u307e\u305b\u3093\u306d\u3002\nDataList\u30af\u30e9\u30b9\u306f\u3000ToDoList\u30af\u30e9\u30b9\u306e\u5b50\u4f9b\u3067\u3059\u3002\u3064\u307e\u308a DataList\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\n\u4f5c\u6210\u3055\u308c\u3001\u305d\u306e\u6642\u306bDataList\u30af\u30e9\u30b9\u304c\u6271\u3046\u5909\u6570\u3068\u3057\u3066 datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u3092\u6e21\u3059\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u65e5\u672c\u8a9e\u3067\u66f8\u304f\u3068\u3084\u3084\u3053\u3057\u3044\u3067\u3059\u306d\u3002\n\u3064\u307e\u308a\u306f\u3001ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3053\u3068\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n this.state = {\n datas: props.datas\n }\n }<\/p>\n render(){\n return (<\/p>\n\n \n \n <\/div>\n );\n }\n }<\/p>\n[\/bash]<\/p>\nrender\u30e1\u30bd\u30c3\u30c9\u306e\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f\u5909\u6570\u306f\u3001 \u30af\u30e9\u30b9\u5185\u3067 props\uff08\u30d7\u30ed\u30d1\u30c6\u30a3\uff09\u3068\u3057\u3066\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306f datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f DATAS\u5909\u6570\u306e\u4e2d\u8eab\u3092\u81ea\u8eab\u306e\u30af\u30e9\u30b9\u306e state\u3068\u3057\u3066\u7ba1\u7406\u3057\u3088\u3046\u3068\u3057\u307e\u3059\u3002\n\u3053\u308c\u304c constructor\u306e\u4e2d\u306b\u3042\u308b\u3002<\/p>\nthis.state = {datas: this.props.datas};<\/p>\n\u3053\u308c\u3067 ToDoList\u30af\u30e9\u30b9 \u5185\u3067\u306f this.state.datas \u3067 DATAS\u306e\u5185\u5bb9\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3084\u3063\u3068\u3053\u308c\u3067 DataList\u306b DATAS\u306e\u5024\u304c\u6e21\u308b\u3053\u3068\u304c\u8aac\u660e\u3067\u304d\u307e\u3057\u305f\u304b\u306d\u30fb\u30fb\u30fb<\/p>\n\u3067\u306f\u3001\u6b21\u306fDataList\u306e render\u30e1\u30bd\u30c3\u30c9\u3067ToDo\u306e\u4e00\u884c\u4e00\u884c\u3092\u69cb\u6210\u3059\u308bDataLine\u30af\u30e9\u30b9\u3092\u4f5c\u3063\u3066\u3044\u308b\u3068\u3053\u308d\u3092\n\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push();\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n[\/bash]<\/p>\n\u914d\u5217\u5909\u6570 dlist\u306b DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092push\u3057\u3066\u3044\u3063\u3066\u307e\u3059\u306d\u3002\n\u305d\u3057\u3066\u3001DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e data\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u306e\uff11\u884c\u306e\u5024\n\u3064\u307e\u308aToDo\u4e00\u4ef6\u3092\u30c7\u30fc\u30bf\u3068\u3057\u3066\u6e21\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306f this.props.data\u3067\u3053\u306e\u5024\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nkey\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b\u3064\u3044\u3066\u3067\u3059\u304c\u3001ReactJS\u3067\u306f\u7e70\u308a\u8fd4\u3057\u30eb\u30fc\u30d7\u3067\u540c\u3058\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u751f\u6210\n\u3059\u308b\u3068\u304d\u306f\u3001\uff11\u3064\uff11\u3064\u3092\u30e6\u30cb\u30fc\u30af\u306b\u3059\u308b\u5024\u3092\u30ad\u30fc(key)\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\n\u3068\u3044\u3046\u30eb\u30fc\u30eb\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u3053\u3053\u3067\u306f DATAS\u306e\u4e2d\u306e\u30c7\u30fc\u30bf\u306e id\u3092\u30ad\u30fc\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\u3067\u306f\u3001ToDo\u306e\uff11\u4ef6\u306b\u3042\u305f\u308bDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u306a\u306b\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb<\/p>\n[bash]\n class DataLine extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n render(){\n return (<\/p>\n\n \u524a\u9664<\/button>\n {this.props.data.id} — {this.props.data.content}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u306e\u3088\u3046\u306bDataLine\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u30dc\u30bf\u30f3\uff11\u3064\u3068\u3001\u6587\u5b57\u5217\u3068\u3057\u3066\u306e\u30c7\u30fc\u30bf\u306eid\u3068content\u3092\u51fa\u529b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\u3053\u3053\u307e\u3067\u3067\u3001\u3088\u3046\u3084\u304f\u3001ToDoList\u3067\u524a\u9664\u30dc\u30bf\u30f3\u4ed8\u304d\u306e\u4e00\u89a7\u304c\u3067\u304d\u307e\u3057\u305f\u3002\n\u3067\u3082\u3001\u3053\u308c\u3058\u3083\u307e\u3060ToDo\u3082\u8ffd\u52a0\u3067\u304d\u306a\u3044\u3057\u3001\u524a\u9664\u3082\u3067\u304d\u306a\u3044\u3002<\/p>\n\u307e\u305a\u306f\u3001\u524a\u9664\u306e\u65b9\u306e\u8aac\u660e\u306b\u5165\u308a\u307e\u3057\u3087\u3046\u3002\n\u3067\u3001\u524a\u9664\u3092\u8003\u3048\u308b\u524d\u306b\u3001ReactJS\u3067\u30a2\u30d7\u30ea\u3092\u69cb\u7bc9\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u8aac\u660e\u3057\u3066\u304a\u304d\u307e\u3059\u3002\n\u30a2\u30d7\u30ea\u306f\u3069\u3093\u306a\u30d1\u30fc\u30c4\u3067\u69cb\u6210\u3055\u308c\u308b\u304b\u30fb\u30fb\u30fb\u3001\u3053\u308c\u306f\u3082\u3046\u8aac\u660e\u6e08\u307f\u3067\u3059\u306d\u3002\n\u6b21\u306b\u30a2\u30d7\u30ea\u3067\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5024\u3067\u7ba1\u7406\u3057\u3066\u3044\u304b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\u306f\u4f55\u304b\u30fb\u30fb\u30fb\n\u3053\u308c\u3092\u8003\u3048\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5024\u3067\u3001\u7ba1\u7406\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\uff1d\u30b9\u30c6\u30fc\u30c8(state\uff09\n<\/h4>\n\u306a\u3093\u3067\u3059\u3002\n\u305d\u3057\u3066\u3001\u3082\u3046\u3061\u3087\u3063\u3068\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u30fb\u30fb\u30fb\u3001\u4ed6\u306e\u5024\u304b\u3089\u8a08\u7b97\u3057\u305f\u308a\u3057\u3066\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u5024\u306f\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u306f\u7ba1\u7406\u3057\u307e\u305b\u3093\u3002\n\u3069\u3046\u8a08\u7b97\u3057\u3088\u3046\u3068\u3057\u3066\u3082\u3001\u3069\u3053\u304b\u3089\u3082\u5c0e\u304d\u51fa\u305b\u306a\u3044\u5909\u5316\u3059\u308b\u5024\u306e\u307f\u3092\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\u3055\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306b\u304a\u3044\u3066\u30b9\u30c6\u30fc\u30c8\u306f\u306a\u306b\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb<\/p>\n\u307e\u305a\u5f53\u7136\u3067\u3059\u304cToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf\u3067\u3059\u306d\u3002\n\u305d\u3057\u3066\u3082\u3046\u3072\u3068\u3064\u3001ToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024\u3067\u3059\u3002\n\u305d\u3057\u3066\u305d\u3057\u3066\u3001\u6700\u5f8c\u306b\u3082\u3046\u3072\u3068\u3064\u3002ToDo\u30ea\u30b9\u30c8\uff11\u4ef6\uff11\u4ef6\u306f\u30e6\u30cb\u30fc\u30af\u306a\u3082\u306e\u306a\u306e\u3067\u3001\nToDo\uff11\u4ef6\u306b\u5bfe\u3057\u3066\uff11\u3064\u306eID\u3092\u6301\u3061\u307e\u3059\u3002\u305d\u306eID\u306f\u91cd\u8907\u3057\u3066\u306f\u3044\u3051\u306a\u3044\u306e\u3067\u3000ID\u306e\u6700\u5927\u5024\u3092\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\u3067\u3001\u307e\u305f\u307e\u305f\u3053\u3053\u3082\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb\u30fb\n\u30b9\u30c6\u30fc\u30c8\u3092\u8ab0\u304c\u3001\u3064\u307e\u308a\u3069\u306e\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u304b\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb<\/p>\n\u4e00\u756a\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306b\u3042\u308b\u30af\u30e9\u30b9\u304c\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3059\u308b<\/h4>\n\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u3001\u672c\u5f53\u306f\u3053\u308c\u306f\u5618\u3060\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u6163\u308c\u306a\u3044\u3046\u3061\u306f\n\u4e00\u756a\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u308b\u306e\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002\n\u3064\u307e\u308a\u4eca\u56de\u306eToDo\u30ea\u30b9\u30c8\u3067\u8a00\u3046\u3068\u3000ToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }\n[\/bash]<\/p>\n\u3088\u3063\u3066 ToDoList\u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u4e0a\u8a18\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\uff08\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u306f\u30b9\u30c6\u30fc\u30c8\u3067\u7ba1\u7406\u3059\u308b\u5024\u306e\u521d\u671f\u5024\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\uff09<\/p>\nthis.state = \uff5b\u30b9\u30c6\u30fc\u30c8\u3067\u7ba1\u7406\u3059\u308b\u5909\u6570\u7fa4\uff5d<\/h4>\n\u305d\u3057\u3066\u3001 this.state = \u3068\u8a18\u8ff0\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u8a2d\u5b9a\u3067\u304d\u308b\u306e\u306f\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3060\u3051\u3060\u3068\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nReactJS\u3067\u306f\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u304c\u5909\u5316\u3059\u308b\u3068\u5fc5\u8981\u306a\u3068\u3053\u308d\u3060\u3051\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3092\u81ea\u52d5\u3067\u884c\u3044\u307e\u3059\u3002\n\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u30bb\u30c3\u30c8\u3057\u3066\u81ea\u52d5\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u306b\u306f\n\u30af\u30e9\u30b9\u306e\u3000setState\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002\n\u4f8b\u3048\u3070\u3001ToDo\u30ea\u30b9\u30c8\u306e\u6700\u5927ID(maxId)\u3092\u5909\u5316\u3055\u305b\u3088\u3046\u3068\u3059\u308b\u306a\u3089\u3070\n\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3059\u308b\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067<\/p>\n[bash]\nthis.setState({maxId: xxxx});\n[\/bash]<\/p>\n\u3068\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nID\u306e\u6700\u5927\u5024\u3092\u5909\u3048\u3066\u3082\u3001\u753b\u9762\u4e0a\u5909\u5316\u3059\u308b\u5fc5\u8981\u306e\u3042\u308b\u3068\u3053\u308d\u306f\u306a\u3044\u306e\u3067ReactJS\u306f\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u306e\u307f\u3092\u5909\u5316\u3055\u305b\u3001\u306a\u306b\u3082\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306f\u884c\u3044\u307e\u305b\u3093\u3002<\/p>\nToDo\u30ea\u30b9\u30c8\u304b\u3089\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u3053\u3068\u3092\u8003\u3048\u308b\u3068\u30fb\u30fb\u30fb\nToDoList\u30af\u30e9\u30b9\u5185\u306e\u4f55\u3089\u304b\u306e\u30e1\u30bd\u30c3\u30c9\u3067<\/p>\n[bash]\nvar newDatas = [];\nvar i;<\/p>\nfor (i = 0 ; i < this.state.datas.length ; i++){\n var data = this.state.datas[i];\n if (data.id != \u524a\u9664\u3059\u308bID){\n newDatas.push(data);\n }\n}<\/p>\nthis.setState({datas: newDatas});\n[\/bash]<\/p>\n\u3068\u3057\u3066\u3084\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\nReactJS\u304c\u7ba1\u7406\u3059\u308b datas\u30b9\u30c6\u30fc\u30c8\u304c\u5909\u5316\u3059\u308b\u3068\u3001\u305d\u306e\u5909\u6570\u306e\u5024\u3092\u4f7f\u3063\u3066\n\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u90e8\u5206\u304c\u81ea\u52d5\u7684\u306b\u8abf\u6574\u3055\u308c\u308b\u306e\u3067\u3059\u3002\n\u4f8b\u3048\u3070 jQuery\u306a\u3093\u304b\u3067\u540c\u3058\u3088\u3046\u306a\u3053\u3068\u3092\u3057\u3088\u3046\u3068\u601d\u3048\u3070\u3001\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u306e\u30bf\u30b0\u306e\u5b50\u4f9b\u3092\uff08ToDo\uff11\u4ef6\uff09\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\n\u4e0d\u8981\u306a\u884c\u306eHTML\u30bf\u30b0\u3092 remove\u3059\u308b\u306a\u3069\u3067\u3059\u306d\u3002<\/p>\n\u3067\u306f\u6b21\u306b\u30da\u30fc\u30b8\u4e0a\u3067\u8d77\u3053\u308b\u30a4\u30d9\u30f3\u30c8\u306f\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u6271\u3046\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\n\u307e\u305a\u3001ToDo\u4e00\u4ef6\u3092\u524a\u9664\u3059\u308b\u51e6\u7406\u3001\u3064\u307e\u308aToDo\u30ea\u30b9\u30c8\u306e\u5de6\u5074\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308b\n\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u305f\u51e6\u7406\u3092\u3069\u3053\u306b\u8a18\u8ff0\u3057\u3066\u3001\u30af\u30ea\u30c3\u30af\u306b\u3088\u3063\u3066\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u306fDataLine\u30af\u30e9\u30b9\u5185\u3067\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\n\u5f53\u7136\u30af\u30ea\u30c3\u30af\u30a4\u30d9\u30f3\u30c8\u306e\u51e6\u7406\u306fDataLine\u30af\u30e9\u30b9\u5185\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\u3069\u3046\u66f8\u304f\u304b\u3068\u3044\u3046\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class DataLine extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleClick()}>\u524a\u9664<\/button>\n {this.props.data.id} — {this.props.data.content}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u3053\u306f\u7d50\u69cb\u666e\u901a\u306a\u306e\u3067\u3059\u304c\u3001\u524a\u9664\u30dc\u30bf\u30f3\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u3044\u308b\u90e8\u5206\u3067\nonClick\u30a4\u30d9\u30f3\u30c8\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nReactJS\u3067\u306f onclick<\/strong>\u3067\u306f\u306a\u304f\u3001onClick<\/strong>\u3067\u3059\u3002\n\u305d\u3057\u3066onClick\u3092\u51e6\u7406\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e handleClick\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u307e\u3059\u3002<\/p>\n\u3067\u3001handelClick\u30e1\u30bd\u30c3\u30c9\u5185\u306e\u8a18\u8ff0\u3092\u898b\u3066\u307f\u308b\u3068<\/p>\n[bash]\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }\n[\/bash]<\/p>\n\u3068\u306a\u3063\u3066\u3044\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306edatas\u3000\u3092\u524a\u9664\u3057\u3066\u3044\u307e\u305b\u3093\u306d\u3002\n\u306a\u305c\u304b\u3068\u3044\u3046\u3068\u3001\u4eca\u56de\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u306f\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9ToDoList\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3057\u3066\u3044\u308b\u304b\u3089\u30fb\u30fb\n\u305d\u306e\u5909\u6570\u3092\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u3001\u524a\u9664\u3067\u304d\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3069\u3046\u3059\u308b\u304b\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u51e6\u7406\u3067\u304d\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306b\u304a\u9858\u3044\u3059\u308c\u3070\u826f\u3044<\/h4>\n[bash]\nthis.props.onDelete(this.props.data.id);\n[\/bash] <\/p>\n\u3053\u308c\u306f\u3001\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b onDelete\u3068\u3044\u3046\u306e\u3092\u4f5c\u308b\u3068\u3044\u3046\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\n\u305d\u3057\u3066\u305d\u308c\u306f\u5909\u6570\u3092\u7ba1\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u306f\u306a\u304f\u3066\u3001\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3060\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u96e3\u3057\u3044\u3067\u3059\u306d\u3002\u304b\u306a\u308a\u9811\u5f35\u3063\u3066\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nDataLine\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3042\u308b\u3002\n\u3067\u30fb\u30fb\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u3092DataLine\u30af\u30e9\u30b9\u3088\u308a\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u51e6\u7406\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308b\u304b\u3068\u3044\u3046\u3068\nDataLine\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u90e8\u5206\u306b\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3068\u3057\u3066\u3001\u4e0a\u4f4d\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002\n\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \u30b9\u30c6\u30fc\u30c8\u3092\u306a\u3093\u3068\u304b\u524a\u9664\u3057\u3088\u3046\u3068\u52aa\u529b\u3059\u308b\u3002\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u4eca\u56de\u306e\u4f8b\u3067\u8a00\u3046\u3068\u3001DataLine\u306e\uff11\u3064\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306f DataList\u30af\u30e9\u30b9\u306a\u306e\u3067\u30fb\u30fb\u30fb\n\u30c7\u30fc\u30bf\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u5909\u6570\u3092\u53c2\u7167\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\u51fa\u6765\u306a\u3044\uff1f\uff1f\uff1f\uff1f<\/p>\n\u3068\u601d\u3046\u65b9\u3082\u3044\u3089\u3063\u3057\u3083\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\nDataList\u306f\u30c7\u30fc\u30bf\u306e\u4e00\u89a7\u3092\u51fa\u529b\u3057\u3066\u308b\u3093\u3060\u304b\u3089\u3001\u5909\u6570\u306e\u5024\u3092\u524a\u9664\u3067\u304d\u308b\u3058\u3083\u3093\u3002\n\u305d\u3046\u601d\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002<\/p>\n\u3067\u3082 ReactJS\u306e\u9244\u5247<\/p>\n\u30b9\u30c6\u30fc\u30c8\u306f\u6700\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b<\/h4>\nDataList\u306f\u6700\u4e0a\u4f4d\u3058\u3083\u3042\u308a\u307e\u305b\u3093\u306d\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3057\u3066\u3044\u306a\u3044\u3002\n\u306a\u306e\u3067\u3001\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u524a\u9664\u3067\u304d\u307e\u305b\u3093\u3002\n\u4e00\u89a7\u30c7\u30fc\u30bf\u306f\u30b9\u30c6\u30fc\u30c8(state)\u3067\u306f\u306a\u304f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3(props)\u3067\u53c2\u7167\u3067\u304d\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3058\u3083\u3042\u56f0\u3063\u305f\u30fb\u30fb\u30fb\u3000\u3069\u3046\u3059\u308a\u3083\u3044\u3044\u3093\u3060\u3068\u306a\u308a\u307e\u3059\u304c\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3053\u3068\u304c\u51fa\u6765\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308a\u3083\u3044\u3044<\/h4>\n\u3067\u3001\u4f1d\u3048\u308b\u65b9\u6cd5\u3067\u3059\u304c\u3001\u3053\u308c\u306fDataLine\u30af\u30e9\u30b9\u306e onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u540c\u3058\u3067\u3001\nDataList\u30af\u30e9\u30b9\u306b\u3082 onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f5c\u308a\u3001\u305d\u3053\u3092\u7d4c\u7531\u3057\u3066\u3001\u6700\u4e0a\u4f4d\u306e\nToDoList\u30af\u30e9\u30b9\u306b\u60c5\u5831\u3092\u4f1d\u3048\u308a\u3083\u3044\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u3067\u306f\u3001\u5148\u307b\u3069\u306e\u90e8\u5206\u3092\u66f8\u304d\u63db\u3048\u3066\u307f\u307e\u3059\u3002<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \/\/\u30b9\u30c6\u30fc\u30c8\u3092\u76f4\u63a5\u524a\u9664\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308b\u3002\n this.props.onDelete(id);\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3067\u3001DataList\u30af\u30e9\u30b9\u306e\u4e0a\u4f4d\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306a\u306e\u3067\u3001\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067 DataList\u30af\u30e9\u30b9\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u969b\u306b\nonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u3092 ToDoList\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9\u3078\u8ee2\u9001\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f\u3001<\/p>\n[bash]\n class ToDoList extends React.Component{<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n \n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\n\u306a\u306b\u3092\u3057\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u3000DataList\u30af\u30e9\u30b9\u5185\u3067\u8d77\u3053\u3063\u305f\u3000onDelete\u30a4\u30d9\u30f3\u30c8\u306f\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9 handleOnDelete\u3067\u51e6\u7406\u3059\u308b\u3088\u3002\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\nToDoList\u30af\u30e9\u30b9\u306ehandleOnDelete\u3067\u306f\u3001\u3088\u3046\u3084\u304f ToDo\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\n\u3067\u304d\u308b\u306e\u3067\u3001\u3044\u3088\u3044\u3088\u3053\u3053\u3067\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u307e\u3059\u3002<\/p>\nhandleOnDelete\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3092\u898b\u3066\u3044\u305f\u3060\u304f\u3068\u30fb\u30fb\u30fb\nstate.datas\u3000\u3092\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\u3001\u305d\u306e\u30c7\u30fc\u30bf\u306eid\u304c\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3063\u3066\u304d\u305f\u3002\n\u524a\u9664\u5bfe\u8c61ID\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3001\u5bfe\u8c61\u5916\u306a\u3089\u65b0\u305f\u306a\u914d\u5217\u5909\u6570\u306bpush\u3059\u308b\u3002<\/p>\n\u305d\u3057\u3066\u3001\u5168\u30c7\u30fc\u30bf\u306e\u30eb\u30fc\u30d7\u304c\u7d42\u308f\u3063\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067<\/p>\n[bash]\n this.setState({datas: newDatas});\n[\/bash]<\/p>\n\u3068\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u66f4\u3092ReactJS\u306b\u901a\u77e5\u3057\u3066\u3044\u307e\u3059\u3002\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u7406\u89e3\u3067\u304d\u307e\u3057\u305f\u304b\uff1f\uff1f<\/p>\n\u3067\u306f\u6b21\u884c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002\n\u3044\u3088\u3044\u3088ToDo\u306e\u8ffd\u52a0\u3067\u3059\u3002<\/p>\n\u8ffd\u52a0\u306f NewToDo\u30af\u30e9\u30b9\u3067\u884c\u3044\u307e\u3059\u3002<\/p>\n[bash]\n class NewToDo extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleClick(){\n this.props.onAdd();\n }<\/p>\n handleChange(event){\n var val = event.target.value;\n this.props.onContentChange(val);\n }<\/p>\n render(){\n return (<\/p>\n\n \u30b3\u30f3\u30c6\u30f3\u30c4<\/label>\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3044\u304d\u306a\u308a\u30bd\u30fc\u30b9\u5168\u90e8\u8cbc\u308a\u4ed8\u3051\u305f\u306e\u3067 \u304e\u3087\u3063\u3068\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u30fb\u30fb\u30fb\n\u3053\u3053\u307e\u3067\u306e\u3053\u3068\u304c\u7406\u89e3\u3067\u304d\u3066\u3044\u305f\u3089\u306a\u3093\u3068\u304b\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u307e\u305a\u306f render\u30e1\u30bd\u30c3\u30c9\u304b\u3089\u8aac\u660e\u3002<\/p>\ndiv\u30bf\u30b0\u306e\u4e2d\u306blabel\uff11\u3064\u3068\u3001input\uff11\u3064\u3068button\uff11\u3064\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u307e\u3059\u3002\nlabel\u306f\u5358\u306a\u308b\u76ee\u5370\u306a\u306e\u3067\u8aac\u660e\u306f\u7701\u7565\u3059\u308b\u3068\u3057\u3066\u30fb\u30fb\u30fb<\/p>\ninput \u306fToDo\u306e\u4e2d\u8eab\u3092\u8a18\u8ff0\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u3067\u3059\u3002\nbutton \u306fToDo\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u30dc\u30bf\u30f3\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3053\u3053\u3067\u6539\u3081\u3066ToDoList\u5168\u4f53\u304c\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u304c\u4f55\u3060\u3063\u305f\u304b\u601d\u3044\u51fa\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf<\/li>\nToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024<\/li>\n\u30c7\u30fc\u30bf\u306eID\u306e\u6700\u5927\u5024<\/li>\n<\/ul>\n\u305d\u3057\u3066\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf\u306f\u3059\u3079\u3066\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9 ToDoList\u3067\u7ba1\u7406\u3055\u308c\u308b\u306e\u3067\u3057\u305f\u3002\n\u3064\u307e\u308aNewToDo\u30af\u30e9\u30b9\u306e input \u306b\u5165\u529b\u3055\u308c\u305f\u5024\u306f\u3001NewToDo\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b\u306e\u3067\u306f\u306a\u304f\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\n\u305d\u3057\u3066\u3001NewToDo\u30af\u30e9\u30b9\u306ebutton\u30af\u30ea\u30c3\u30af\u3067ToDo\u30ea\u30b9\u30c8\u306b\u8ffd\u52a0\u3057\u305f\u3044\u304c\u3001\u3053\u308c\u3082\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u3053\u3068\u3092\u901a\u77e5\u3057\u3066\u3001\u51e6\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n\u3053\u306e\u3053\u3068\u304c<\/p>\n[bash]\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n[\/bash]<\/p>\ninput\u3067\u306f onChange \u3064\u307e\u308a\u5024\u304c\uff11\u6587\u5b57\u3067\u3082\u5909\u5316\u3059\u308b\u305f\u3073\u306b\u3001\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002\n\u30dc\u30bf\u30f3\u306e\u30af\u30ea\u30c3\u30af\u306f click\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002<\/p>\n\u3053\u308c\u3060\u3051\u3067\u3059\u3002NewToDo\u30af\u30e9\u30b9\u306f\u81ea\u5206\u3067\u3059\u308b\u3053\u3068\u306f\u3001\u307b\u3068\u3093\u3069\u306a\u306b\u3082\u3042\u308a\u307e\u305b\u3093\u3002\n\u5909\u5316\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u304c\u3042\u3063\u305f\u3053\u3068\u3092\u89aa\u30af\u30e9\u30b9\u3078\u901a\u77e5\u3057\u3066\u3044\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3067\u306f\u6700\u5f8c\u3001\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e ToDoList\u30af\u30e9\u30b9\u3092\u8997\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }<\/p>\n handleContentChange(ct){\n this.setState({content: ct});\n }<\/p>\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleOnAdd()}\n onContentChange={(ct) => this.handleContentChange(ct)}\n \/>\n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u307e\u305a\u6ce8\u76ee\u3057\u3066\u3044\u305f\u3060\u304d\u305f\u3044\u306e\u306f render\u30e1\u30bd\u30c3\u30c9\u3002<\/p>\n\nNewToDo\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\nDataList\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\n<\/ul>\nNewToDo\u30af\u30e9\u30b9\u306e onAdd\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnAdd\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002\nonContentChange\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleContentChange\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnDelete\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u306e\u65b9\u306f\u3059\u3067\u306b\u8aac\u660e\u6e08\u307f\u306a\u306e\u3067\u3001NewToDo\u30af\u30e9\u30b9\u306e\u65b9\u306e\u8aac\u660e\u3092\u3057\u307e\u3059\u3002<\/p>\n[bash]\n handleContentChange(ct){\n this.setState({content: ct});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e input\uff08\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\uff09\u3067\u8d77\u3053\u3063\u305f\u5024\u306e\u5909\u5316\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\nsetState\u30e1\u30bd\u30c3\u30c9\u3067 \u30b9\u30c6\u30fc\u30c8\u3092\u5909\u66f4\u3002<\/p>\n[bash]\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e\u30dc\u30bf\u30f3\u30af\u30ea\u30c3\u30af\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\u3001\n\u6700\u5927\u5024\u3092\uff11\u52a0\u7b97\u3057\u3066\u3001ToDo\u30c7\u30fc\u30bf\u306e\u6700\u5f8c\u5c3e\u306b\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0(push)\u3002<\/p>\n\u305d\u3057\u3066\u3001setState\u3067\u3000maxId\u3068content\u3068datas \u306e\u5909\u66f4\u3092\u4f1d\u3048\nReactJS\u306b\u30ec\u30f3\u30c0\u30fc\u3092\u4f9d\u983c\u3057\u307e\u3059\u3002<\/p>\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u3088\u3046\u3084\u304fToDo\u30ea\u30b9\u30c8\u306e\u5b8c\u6210\u3067\u3059\u3002<\/p>\n\u90e8\u5206\u90e8\u5206\u3092\u5207\u308a\u53d6\u3063\u305f\u30bd\u30fc\u30b9\u3067\u898b\u3065\u3089\u304b\u3063\u305f\u3068\u601d\u3044\u307e\u3059\u306e\u3067\u3001\u5168\u30bd\u30fc\u30b9\u3092\u4ee5\u4e0b\u306b\u8cbc\u308a\u4ed8\u3051\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n[bash]<\/p>\n<\/div>\n
return (<\/p>\n
);\n }\n }\n[\/bash]<\/p>\n
\u306a\u3093\u306e\u3053\u3068\u304b\u7406\u89e3\u3067\u304d\u307e\u3059\u304b\uff1f \u666e\u901a\u96e3\u3057\u3044\u306a\u3041\u3068\u601d\u3044\u307e\u3059\u3088\u306d\u3002<\/p>\n
\u30af\u30e9\u30b9\u5b9a\u7fa9\u306e\u8aac\u660e\u306f HelloWorld\u3092\u51fa\u529b\u3059\u308b\u90e8\u5206\u3067\u3084\u3063\u305f\u306e\u3067\u5272\u611b\u3057\u307e\u3059\u3002<\/p>\n
\u3067\u306f \u6b21\u306econstructor\u3000\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb\n\u8981\u306f\u30af\u30e9\u30b9\u306e\u521d\u671f\u5316\u51e6\u7406\u3092\u3053\u3053\u3067\u884c\u3044\u307e\u3059\u3088\u3000\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb\n\u521d\u671f\u5316\u3067\u3059\u308b\u3053\u3068\u306f\u7279\u306b\u306a\u3044\u306e\u3067\u3001\u304a\u6c7a\u307e\u308a\u306e\u304a\u307e\u3058\u306a\u3044 super(props)\u3060\u3051\u3092\u8a18\u8ff0\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n
[bash]\n constructor(props){\n super(props);\n }\n[\/bash]<\/p>\n
\u6b21\u306e handleOnDelete \u3053\u308c\u306a\u3093\u3067\u3059\u304c\u30fb\u30fb \u5fc5\u8981\u3067\u3059\u304c\u3001\u3053\u306e\u8aac\u660e\u306f\u5f8c\u56de\u3057\u306b\u3057\u307e\u3059\u3002<\/p>\n
[bash]\n handleOnDelete(id){\n this.props.onDelete(id);\n }\n[\/bash]<\/p>\n
\u6700\u5f8c\u306b render\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\nHelloWorld\u3067\u3082\u3084\u3063\u305f\u3088\u3046\u306b\u3001render\u30e1\u30bd\u30c3\u30c9\u3067\u3001\u3053\u306e\u30af\u30e9\u30b9\u304c\u51fa\u529b\u3059\u308b\nHTML\u30bf\u30b0\u3092\u69cb\u7bc9\u3059\u308b\u3093\u3067\u3059\u3002<\/p>\n
ToDo\u306e\u4e00\u89a7\u306a\u3093\u3067\u3001\u3053\u306e\u30af\u30e9\u30b9\u3092\u4f5c\u308b\u3068\u304d\u306bToDo\u306e\u4e00\u89a7\u3068\u306a\u308b\u30c7\u30fc\u30bf\u3092\u5f15\u304d\u6e21\u3057\u3066\u3082\u3089\u3046\u3053\u3068\u3092\u60f3\u5b9a\u3057\u307e\u3059\u3002\n\u305d\u308c\u304c\u3000this.props.datas\u3000\u3068\u3044\u3046\u5909\u6570\u3067\u53c2\u7167\u3067\u304d\u307e\u3059\u3002<\/p>\n
render\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067\u306f\u3001\u3053\u306e\u5909\u6570\u3092\u30eb\u30fc\u30d7\u3067\u56de\u3057\u3066\u3001 dlist\u3068\u3044\u3046\u5909\u6570\u306b push\u3057\u3066\u3044\u3063\u3066\u307e\u3059\u3002\npush\u3059\u308b\u5185\u5bb9\u306f\u3001ToDo\u306e\uff11\u884c\u3092\u69cb\u6210\u3059\u308b DataLine\u30bf\u30b0\uff08\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u3067\u3059\u3002<\/p>\n
\u305d\u3057\u3066 render\u30e1\u30bd\u30c3\u30c9\u304c\u30ea\u30bf\u30fc\u30f3\u3059\u308b\u5185\u5bb9\u306f <div>\u30bf\u30b0\u306e\u4e2d\u306b\u4e0a\u8a18\u306e\u914d\u5217\u5909\u6570\u3092\u7d44\u307f\u8fbc\u3093\u3060\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
[bash]\n render() {\n var dlist = [];\n var i;<\/p>\n
for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push( this.handleOnDelete(id)}\/>);\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n[\/bash]<\/p>\n\u809d\u5fc3\u306a\u3053\u3068\u3092\u5fd8\u308c\u3066\u3044\u307e\u3057\u305f\u3002\n\uff13\u3064\u306e\u30d1\u30fc\u30c4\u3092\u5305\u542b\u3059\u308b\u4e00\u756a\u5927\u304d\u306a\u30d1\u30fc\u30c4\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u308c\u3092ToDoList\u30af\u30e9\u30b9\u3068\u3057\u307e\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306e\u30bd\u30fc\u30b9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);<\/p>\n this.state = {\n datas: props.datas\n }\n }<\/p>\n render(){\n return (<\/p>\n\n \n \n <\/div>\n );\n }\n }\n[\/bash]<\/p>\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001NewToDo\u30bf\u30b0\u3068DataList\u30bf\u30b0\u3092\u69cb\u7bc9\u3057\u3066\u3044\u308b\u306e\u304c\u89e3\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u305d\u3057\u3066 DataList\u30bf\u30b0\u306e datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b this.state.datas\u3000\u3092\u6e21\u3057\u3066\u3044\u307e\u3059\u3002\nthis.state.datas\u3000\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\uff1f\nstate\u3068\u306f\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u52d5\u7684\u306a\u5909\u6570\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\nReactJS\u3067\u306f state\u306e\u5024\u304c\u5909\u66f4\u3055\u308c\u308b\u3068\u3001\u81ea\u52d5\u7684\u306b\u305d\u306estate\u306e\u5024\u304c\u6307\u3057\u793a\u3059 HTML\u3092\u66f8\u304d\u63db\u3048\u308b\u4ed5\u7d44\u307f<\/h4>\n\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n\u3067\u3001\u5b9f\u969b\u306b\u3053\u3053\u3067\u306f\u3000this.state.datas\u3000\u306b\u4f55\u304c\u5165\u3063\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u6700\u521d\u306e\u65b9\u3067\u8aac\u660e\u3057\u305f\nToDo\u30ea\u30b9\u30c8\u306e\u4e2d\u8eab\u3067\u3042\u308b DATAS\u5909\u6570\u304c\u5165\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u3053\u308c\u3067\u306f\u8a00\u8449\u8db3\u3089\u305a\u3067\u3059\u306d\u3002\nToDoList\u30af\u30e9\u30b9\u304c\u5168\u30af\u30e9\u30b9\u306e\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u3067\u3042\u308b\u306e\u3067\u3001\nReactDOM.render \u3067\u306f\u3000ToDoList\u30af\u30e9\u30b9\u3092\u3000render\u3057\u3066\u3082\u3089\u3044\u307e\u3059\u3002\n\u30bd\u30fc\u30b9\u3067\u66f8\u304f\u3068\u3053\u3093\u306a\u611f\u3058\u3002<\/p>\n[bash]\nReactDOM.render(\n ,\n document.getElementById(“root”)\n);<\/p>\n[\/bash]<\/p>\n\u3067\u3001\u3053\u308c\u3060\u3051\u3060\u3068\u3001ToDoList\u306e\u521d\u671f\u5024\u3092\u6e21\u305b\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u306a\u308b\u306e\u3067\u3001\n\u6b63\u3057\u304f\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\u8981\u306f\u30af\u30e9\u30b9\u5185\u3067\u4f7f\u3044\u305f\u3044\u30c7\u30fc\u30bf\u306f \u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u305d\u3046\u306d\u3002\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u30c7\u30fc\u30bf\u3068\u306f\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u3082\u306e\u306a\u306e\u3067\u3000\uff5b\uff5d\u3000\u3067\u62ec\u3063\u3066\u6e21\u305d\u3046\u306d\u3068\u3044\u3046\u30eb\u30fc\u30eb\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n var DATAS = [\n {id:1, content:”Softbank\u89e3\u7d04”},\n {id:2, content:”R-SIM10\u8cfc\u5165”},\n {id:3, content:”\u570f\u5916\u75c5\u3092\u514b\u670d\u3059\u308bSIM\u30d5\u30ea\u30fc\u30eb\u30fc\u30bf\u30fc\u30b2\u30c3\u30c8”},\n {id:4, content:”\u697d\u5929\u30e2\u30d0\u30a4\u30eb\u7533\u3057\u8fbc\u307f”}\n ]<\/p>\n ReactDOM.render(\n ,\n document.getElementById(“root”)\n );\n[\/bash]<\/p>\n\u3067\u3001\u307e\u3060\u3053\u308c\u3067\u3082 DataList\u30af\u30e9\u30b9\u306e\u3000this.props.datas\u3000\u306b DATAS\u306e\u5024\u304c\u6e21\u3063\u3066\u3044\u304f\u4ed5\u7d44\u307f\u304c\u8aac\u660e\u3067\u304d\u3066\u3044\u307e\u305b\u3093\u306d\u3002\nDataList\u30af\u30e9\u30b9\u306f\u3000ToDoList\u30af\u30e9\u30b9\u306e\u5b50\u4f9b\u3067\u3059\u3002\u3064\u307e\u308a DataList\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\n\u4f5c\u6210\u3055\u308c\u3001\u305d\u306e\u6642\u306bDataList\u30af\u30e9\u30b9\u304c\u6271\u3046\u5909\u6570\u3068\u3057\u3066 datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u3092\u6e21\u3059\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u65e5\u672c\u8a9e\u3067\u66f8\u304f\u3068\u3084\u3084\u3053\u3057\u3044\u3067\u3059\u306d\u3002\n\u3064\u307e\u308a\u306f\u3001ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3053\u3068\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n this.state = {\n datas: props.datas\n }\n }<\/p>\n render(){\n return (<\/p>\n\n \n \n <\/div>\n );\n }\n }<\/p>\n[\/bash]<\/p>\nrender\u30e1\u30bd\u30c3\u30c9\u306e\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f\u5909\u6570\u306f\u3001 \u30af\u30e9\u30b9\u5185\u3067 props\uff08\u30d7\u30ed\u30d1\u30c6\u30a3\uff09\u3068\u3057\u3066\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306f datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f DATAS\u5909\u6570\u306e\u4e2d\u8eab\u3092\u81ea\u8eab\u306e\u30af\u30e9\u30b9\u306e state\u3068\u3057\u3066\u7ba1\u7406\u3057\u3088\u3046\u3068\u3057\u307e\u3059\u3002\n\u3053\u308c\u304c constructor\u306e\u4e2d\u306b\u3042\u308b\u3002<\/p>\nthis.state = {datas: this.props.datas};<\/p>\n\u3053\u308c\u3067 ToDoList\u30af\u30e9\u30b9 \u5185\u3067\u306f this.state.datas \u3067 DATAS\u306e\u5185\u5bb9\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3084\u3063\u3068\u3053\u308c\u3067 DataList\u306b DATAS\u306e\u5024\u304c\u6e21\u308b\u3053\u3068\u304c\u8aac\u660e\u3067\u304d\u307e\u3057\u305f\u304b\u306d\u30fb\u30fb\u30fb<\/p>\n\u3067\u306f\u3001\u6b21\u306fDataList\u306e render\u30e1\u30bd\u30c3\u30c9\u3067ToDo\u306e\u4e00\u884c\u4e00\u884c\u3092\u69cb\u6210\u3059\u308bDataLine\u30af\u30e9\u30b9\u3092\u4f5c\u3063\u3066\u3044\u308b\u3068\u3053\u308d\u3092\n\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n render() {\n var dlist = [];\n var i;<\/p>\n for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push();\n }<\/p>\n return (<\/p>\n\n {dlist}\n <\/div>\n );\n }\n[\/bash]<\/p>\n\u914d\u5217\u5909\u6570 dlist\u306b DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092push\u3057\u3066\u3044\u3063\u3066\u307e\u3059\u306d\u3002\n\u305d\u3057\u3066\u3001DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e data\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u306e\uff11\u884c\u306e\u5024\n\u3064\u307e\u308aToDo\u4e00\u4ef6\u3092\u30c7\u30fc\u30bf\u3068\u3057\u3066\u6e21\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306f this.props.data\u3067\u3053\u306e\u5024\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nkey\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b\u3064\u3044\u3066\u3067\u3059\u304c\u3001ReactJS\u3067\u306f\u7e70\u308a\u8fd4\u3057\u30eb\u30fc\u30d7\u3067\u540c\u3058\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u751f\u6210\n\u3059\u308b\u3068\u304d\u306f\u3001\uff11\u3064\uff11\u3064\u3092\u30e6\u30cb\u30fc\u30af\u306b\u3059\u308b\u5024\u3092\u30ad\u30fc(key)\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\n\u3068\u3044\u3046\u30eb\u30fc\u30eb\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u3053\u3053\u3067\u306f DATAS\u306e\u4e2d\u306e\u30c7\u30fc\u30bf\u306e id\u3092\u30ad\u30fc\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\u3067\u306f\u3001ToDo\u306e\uff11\u4ef6\u306b\u3042\u305f\u308bDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u306a\u306b\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb<\/p>\n[bash]\n class DataLine extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n render(){\n return (<\/p>\n\n \u524a\u9664<\/button>\n {this.props.data.id} — {this.props.data.content}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u306e\u3088\u3046\u306bDataLine\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u30dc\u30bf\u30f3\uff11\u3064\u3068\u3001\u6587\u5b57\u5217\u3068\u3057\u3066\u306e\u30c7\u30fc\u30bf\u306eid\u3068content\u3092\u51fa\u529b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\u3053\u3053\u307e\u3067\u3067\u3001\u3088\u3046\u3084\u304f\u3001ToDoList\u3067\u524a\u9664\u30dc\u30bf\u30f3\u4ed8\u304d\u306e\u4e00\u89a7\u304c\u3067\u304d\u307e\u3057\u305f\u3002\n\u3067\u3082\u3001\u3053\u308c\u3058\u3083\u307e\u3060ToDo\u3082\u8ffd\u52a0\u3067\u304d\u306a\u3044\u3057\u3001\u524a\u9664\u3082\u3067\u304d\u306a\u3044\u3002<\/p>\n\u307e\u305a\u306f\u3001\u524a\u9664\u306e\u65b9\u306e\u8aac\u660e\u306b\u5165\u308a\u307e\u3057\u3087\u3046\u3002\n\u3067\u3001\u524a\u9664\u3092\u8003\u3048\u308b\u524d\u306b\u3001ReactJS\u3067\u30a2\u30d7\u30ea\u3092\u69cb\u7bc9\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u8aac\u660e\u3057\u3066\u304a\u304d\u307e\u3059\u3002\n\u30a2\u30d7\u30ea\u306f\u3069\u3093\u306a\u30d1\u30fc\u30c4\u3067\u69cb\u6210\u3055\u308c\u308b\u304b\u30fb\u30fb\u30fb\u3001\u3053\u308c\u306f\u3082\u3046\u8aac\u660e\u6e08\u307f\u3067\u3059\u306d\u3002\n\u6b21\u306b\u30a2\u30d7\u30ea\u3067\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5024\u3067\u7ba1\u7406\u3057\u3066\u3044\u304b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\u306f\u4f55\u304b\u30fb\u30fb\u30fb\n\u3053\u308c\u3092\u8003\u3048\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5024\u3067\u3001\u7ba1\u7406\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\uff1d\u30b9\u30c6\u30fc\u30c8(state\uff09\n<\/h4>\n\u306a\u3093\u3067\u3059\u3002\n\u305d\u3057\u3066\u3001\u3082\u3046\u3061\u3087\u3063\u3068\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u30fb\u30fb\u30fb\u3001\u4ed6\u306e\u5024\u304b\u3089\u8a08\u7b97\u3057\u305f\u308a\u3057\u3066\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u5024\u306f\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u306f\u7ba1\u7406\u3057\u307e\u305b\u3093\u3002\n\u3069\u3046\u8a08\u7b97\u3057\u3088\u3046\u3068\u3057\u3066\u3082\u3001\u3069\u3053\u304b\u3089\u3082\u5c0e\u304d\u51fa\u305b\u306a\u3044\u5909\u5316\u3059\u308b\u5024\u306e\u307f\u3092\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\u3055\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306b\u304a\u3044\u3066\u30b9\u30c6\u30fc\u30c8\u306f\u306a\u306b\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb<\/p>\n\u307e\u305a\u5f53\u7136\u3067\u3059\u304cToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf\u3067\u3059\u306d\u3002\n\u305d\u3057\u3066\u3082\u3046\u3072\u3068\u3064\u3001ToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024\u3067\u3059\u3002\n\u305d\u3057\u3066\u305d\u3057\u3066\u3001\u6700\u5f8c\u306b\u3082\u3046\u3072\u3068\u3064\u3002ToDo\u30ea\u30b9\u30c8\uff11\u4ef6\uff11\u4ef6\u306f\u30e6\u30cb\u30fc\u30af\u306a\u3082\u306e\u306a\u306e\u3067\u3001\nToDo\uff11\u4ef6\u306b\u5bfe\u3057\u3066\uff11\u3064\u306eID\u3092\u6301\u3061\u307e\u3059\u3002\u305d\u306eID\u306f\u91cd\u8907\u3057\u3066\u306f\u3044\u3051\u306a\u3044\u306e\u3067\u3000ID\u306e\u6700\u5927\u5024\u3092\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\u3067\u3001\u307e\u305f\u307e\u305f\u3053\u3053\u3082\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb\u30fb\n\u30b9\u30c6\u30fc\u30c8\u3092\u8ab0\u304c\u3001\u3064\u307e\u308a\u3069\u306e\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u304b\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb<\/p>\n\u4e00\u756a\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306b\u3042\u308b\u30af\u30e9\u30b9\u304c\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3059\u308b<\/h4>\n\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u3001\u672c\u5f53\u306f\u3053\u308c\u306f\u5618\u3060\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u6163\u308c\u306a\u3044\u3046\u3061\u306f\n\u4e00\u756a\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u308b\u306e\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002\n\u3064\u307e\u308a\u4eca\u56de\u306eToDo\u30ea\u30b9\u30c8\u3067\u8a00\u3046\u3068\u3000ToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u307e\u3059\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }\n[\/bash]<\/p>\n\u3088\u3063\u3066 ToDoList\u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u4e0a\u8a18\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\uff08\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u306f\u30b9\u30c6\u30fc\u30c8\u3067\u7ba1\u7406\u3059\u308b\u5024\u306e\u521d\u671f\u5024\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\uff09<\/p>\nthis.state = \uff5b\u30b9\u30c6\u30fc\u30c8\u3067\u7ba1\u7406\u3059\u308b\u5909\u6570\u7fa4\uff5d<\/h4>\n\u305d\u3057\u3066\u3001 this.state = \u3068\u8a18\u8ff0\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u8a2d\u5b9a\u3067\u304d\u308b\u306e\u306f\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3060\u3051\u3060\u3068\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nReactJS\u3067\u306f\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u304c\u5909\u5316\u3059\u308b\u3068\u5fc5\u8981\u306a\u3068\u3053\u308d\u3060\u3051\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3092\u81ea\u52d5\u3067\u884c\u3044\u307e\u3059\u3002\n\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u30bb\u30c3\u30c8\u3057\u3066\u81ea\u52d5\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u306b\u306f\n\u30af\u30e9\u30b9\u306e\u3000setState\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002\n\u4f8b\u3048\u3070\u3001ToDo\u30ea\u30b9\u30c8\u306e\u6700\u5927ID(maxId)\u3092\u5909\u5316\u3055\u305b\u3088\u3046\u3068\u3059\u308b\u306a\u3089\u3070\n\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3059\u308b\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067<\/p>\n[bash]\nthis.setState({maxId: xxxx});\n[\/bash]<\/p>\n\u3068\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nID\u306e\u6700\u5927\u5024\u3092\u5909\u3048\u3066\u3082\u3001\u753b\u9762\u4e0a\u5909\u5316\u3059\u308b\u5fc5\u8981\u306e\u3042\u308b\u3068\u3053\u308d\u306f\u306a\u3044\u306e\u3067ReactJS\u306f\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u306e\u307f\u3092\u5909\u5316\u3055\u305b\u3001\u306a\u306b\u3082\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306f\u884c\u3044\u307e\u305b\u3093\u3002<\/p>\nToDo\u30ea\u30b9\u30c8\u304b\u3089\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u3053\u3068\u3092\u8003\u3048\u308b\u3068\u30fb\u30fb\u30fb\nToDoList\u30af\u30e9\u30b9\u5185\u306e\u4f55\u3089\u304b\u306e\u30e1\u30bd\u30c3\u30c9\u3067<\/p>\n[bash]\nvar newDatas = [];\nvar i;<\/p>\nfor (i = 0 ; i < this.state.datas.length ; i++){\n var data = this.state.datas[i];\n if (data.id != \u524a\u9664\u3059\u308bID){\n newDatas.push(data);\n }\n}<\/p>\nthis.setState({datas: newDatas});\n[\/bash]<\/p>\n\u3068\u3057\u3066\u3084\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\nReactJS\u304c\u7ba1\u7406\u3059\u308b datas\u30b9\u30c6\u30fc\u30c8\u304c\u5909\u5316\u3059\u308b\u3068\u3001\u305d\u306e\u5909\u6570\u306e\u5024\u3092\u4f7f\u3063\u3066\n\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u90e8\u5206\u304c\u81ea\u52d5\u7684\u306b\u8abf\u6574\u3055\u308c\u308b\u306e\u3067\u3059\u3002\n\u4f8b\u3048\u3070 jQuery\u306a\u3093\u304b\u3067\u540c\u3058\u3088\u3046\u306a\u3053\u3068\u3092\u3057\u3088\u3046\u3068\u601d\u3048\u3070\u3001\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u306e\u30bf\u30b0\u306e\u5b50\u4f9b\u3092\uff08ToDo\uff11\u4ef6\uff09\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\n\u4e0d\u8981\u306a\u884c\u306eHTML\u30bf\u30b0\u3092 remove\u3059\u308b\u306a\u3069\u3067\u3059\u306d\u3002<\/p>\n\u3067\u306f\u6b21\u306b\u30da\u30fc\u30b8\u4e0a\u3067\u8d77\u3053\u308b\u30a4\u30d9\u30f3\u30c8\u306f\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u6271\u3046\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\n\u307e\u305a\u3001ToDo\u4e00\u4ef6\u3092\u524a\u9664\u3059\u308b\u51e6\u7406\u3001\u3064\u307e\u308aToDo\u30ea\u30b9\u30c8\u306e\u5de6\u5074\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308b\n\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u305f\u51e6\u7406\u3092\u3069\u3053\u306b\u8a18\u8ff0\u3057\u3066\u3001\u30af\u30ea\u30c3\u30af\u306b\u3088\u3063\u3066\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u306fDataLine\u30af\u30e9\u30b9\u5185\u3067\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\n\u5f53\u7136\u30af\u30ea\u30c3\u30af\u30a4\u30d9\u30f3\u30c8\u306e\u51e6\u7406\u306fDataLine\u30af\u30e9\u30b9\u5185\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\u3069\u3046\u66f8\u304f\u304b\u3068\u3044\u3046\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n[bash]\n class DataLine extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleClick()}>\u524a\u9664<\/button>\n {this.props.data.id} — {this.props.data.content}\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u3053\u306f\u7d50\u69cb\u666e\u901a\u306a\u306e\u3067\u3059\u304c\u3001\u524a\u9664\u30dc\u30bf\u30f3\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u3044\u308b\u90e8\u5206\u3067\nonClick\u30a4\u30d9\u30f3\u30c8\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nReactJS\u3067\u306f onclick<\/strong>\u3067\u306f\u306a\u304f\u3001onClick<\/strong>\u3067\u3059\u3002\n\u305d\u3057\u3066onClick\u3092\u51e6\u7406\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e handleClick\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u307e\u3059\u3002<\/p>\n\u3067\u3001handelClick\u30e1\u30bd\u30c3\u30c9\u5185\u306e\u8a18\u8ff0\u3092\u898b\u3066\u307f\u308b\u3068<\/p>\n[bash]\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }\n[\/bash]<\/p>\n\u3068\u306a\u3063\u3066\u3044\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306edatas\u3000\u3092\u524a\u9664\u3057\u3066\u3044\u307e\u305b\u3093\u306d\u3002\n\u306a\u305c\u304b\u3068\u3044\u3046\u3068\u3001\u4eca\u56de\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u306f\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9ToDoList\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3057\u3066\u3044\u308b\u304b\u3089\u30fb\u30fb\n\u305d\u306e\u5909\u6570\u3092\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u3001\u524a\u9664\u3067\u304d\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3069\u3046\u3059\u308b\u304b\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u51e6\u7406\u3067\u304d\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306b\u304a\u9858\u3044\u3059\u308c\u3070\u826f\u3044<\/h4>\n[bash]\nthis.props.onDelete(this.props.data.id);\n[\/bash] <\/p>\n\u3053\u308c\u306f\u3001\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b onDelete\u3068\u3044\u3046\u306e\u3092\u4f5c\u308b\u3068\u3044\u3046\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\n\u305d\u3057\u3066\u305d\u308c\u306f\u5909\u6570\u3092\u7ba1\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u306f\u306a\u304f\u3066\u3001\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3060\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u96e3\u3057\u3044\u3067\u3059\u306d\u3002\u304b\u306a\u308a\u9811\u5f35\u3063\u3066\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nDataLine\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3042\u308b\u3002\n\u3067\u30fb\u30fb\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u3092DataLine\u30af\u30e9\u30b9\u3088\u308a\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u51e6\u7406\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308b\u304b\u3068\u3044\u3046\u3068\nDataLine\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u90e8\u5206\u306b\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3068\u3057\u3066\u3001\u4e0a\u4f4d\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002\n\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \u30b9\u30c6\u30fc\u30c8\u3092\u306a\u3093\u3068\u304b\u524a\u9664\u3057\u3088\u3046\u3068\u52aa\u529b\u3059\u308b\u3002\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u4eca\u56de\u306e\u4f8b\u3067\u8a00\u3046\u3068\u3001DataLine\u306e\uff11\u3064\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306f DataList\u30af\u30e9\u30b9\u306a\u306e\u3067\u30fb\u30fb\u30fb\n\u30c7\u30fc\u30bf\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u5909\u6570\u3092\u53c2\u7167\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\u51fa\u6765\u306a\u3044\uff1f\uff1f\uff1f\uff1f<\/p>\n\u3068\u601d\u3046\u65b9\u3082\u3044\u3089\u3063\u3057\u3083\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\nDataList\u306f\u30c7\u30fc\u30bf\u306e\u4e00\u89a7\u3092\u51fa\u529b\u3057\u3066\u308b\u3093\u3060\u304b\u3089\u3001\u5909\u6570\u306e\u5024\u3092\u524a\u9664\u3067\u304d\u308b\u3058\u3083\u3093\u3002\n\u305d\u3046\u601d\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002<\/p>\n\u3067\u3082 ReactJS\u306e\u9244\u5247<\/p>\n\u30b9\u30c6\u30fc\u30c8\u306f\u6700\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b<\/h4>\nDataList\u306f\u6700\u4e0a\u4f4d\u3058\u3083\u3042\u308a\u307e\u305b\u3093\u306d\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3057\u3066\u3044\u306a\u3044\u3002\n\u306a\u306e\u3067\u3001\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u524a\u9664\u3067\u304d\u307e\u305b\u3093\u3002\n\u4e00\u89a7\u30c7\u30fc\u30bf\u306f\u30b9\u30c6\u30fc\u30c8(state)\u3067\u306f\u306a\u304f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3(props)\u3067\u53c2\u7167\u3067\u304d\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3058\u3083\u3042\u56f0\u3063\u305f\u30fb\u30fb\u30fb\u3000\u3069\u3046\u3059\u308a\u3083\u3044\u3044\u3093\u3060\u3068\u306a\u308a\u307e\u3059\u304c\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3053\u3068\u304c\u51fa\u6765\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308a\u3083\u3044\u3044<\/h4>\n\u3067\u3001\u4f1d\u3048\u308b\u65b9\u6cd5\u3067\u3059\u304c\u3001\u3053\u308c\u306fDataLine\u30af\u30e9\u30b9\u306e onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u540c\u3058\u3067\u3001\nDataList\u30af\u30e9\u30b9\u306b\u3082 onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f5c\u308a\u3001\u305d\u3053\u3092\u7d4c\u7531\u3057\u3066\u3001\u6700\u4e0a\u4f4d\u306e\nToDoList\u30af\u30e9\u30b9\u306b\u60c5\u5831\u3092\u4f1d\u3048\u308a\u3083\u3044\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u3067\u306f\u3001\u5148\u307b\u3069\u306e\u90e8\u5206\u3092\u66f8\u304d\u63db\u3048\u3066\u307f\u307e\u3059\u3002<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \/\/\u30b9\u30c6\u30fc\u30c8\u3092\u76f4\u63a5\u524a\u9664\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308b\u3002\n this.props.onDelete(id);\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3067\u3001DataList\u30af\u30e9\u30b9\u306e\u4e0a\u4f4d\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306a\u306e\u3067\u3001\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067 DataList\u30af\u30e9\u30b9\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u969b\u306b\nonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u3092 ToDoList\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9\u3078\u8ee2\u9001\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f\u3001<\/p>\n[bash]\n class ToDoList extends React.Component{<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n \n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\n\u306a\u306b\u3092\u3057\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u3000DataList\u30af\u30e9\u30b9\u5185\u3067\u8d77\u3053\u3063\u305f\u3000onDelete\u30a4\u30d9\u30f3\u30c8\u306f\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9 handleOnDelete\u3067\u51e6\u7406\u3059\u308b\u3088\u3002\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\nToDoList\u30af\u30e9\u30b9\u306ehandleOnDelete\u3067\u306f\u3001\u3088\u3046\u3084\u304f ToDo\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\n\u3067\u304d\u308b\u306e\u3067\u3001\u3044\u3088\u3044\u3088\u3053\u3053\u3067\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u307e\u3059\u3002<\/p>\nhandleOnDelete\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3092\u898b\u3066\u3044\u305f\u3060\u304f\u3068\u30fb\u30fb\u30fb\nstate.datas\u3000\u3092\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\u3001\u305d\u306e\u30c7\u30fc\u30bf\u306eid\u304c\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3063\u3066\u304d\u305f\u3002\n\u524a\u9664\u5bfe\u8c61ID\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3001\u5bfe\u8c61\u5916\u306a\u3089\u65b0\u305f\u306a\u914d\u5217\u5909\u6570\u306bpush\u3059\u308b\u3002<\/p>\n\u305d\u3057\u3066\u3001\u5168\u30c7\u30fc\u30bf\u306e\u30eb\u30fc\u30d7\u304c\u7d42\u308f\u3063\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067<\/p>\n[bash]\n this.setState({datas: newDatas});\n[\/bash]<\/p>\n\u3068\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u66f4\u3092ReactJS\u306b\u901a\u77e5\u3057\u3066\u3044\u307e\u3059\u3002\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u7406\u89e3\u3067\u304d\u307e\u3057\u305f\u304b\uff1f\uff1f<\/p>\n\u3067\u306f\u6b21\u884c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002\n\u3044\u3088\u3044\u3088ToDo\u306e\u8ffd\u52a0\u3067\u3059\u3002<\/p>\n\u8ffd\u52a0\u306f NewToDo\u30af\u30e9\u30b9\u3067\u884c\u3044\u307e\u3059\u3002<\/p>\n[bash]\n class NewToDo extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleClick(){\n this.props.onAdd();\n }<\/p>\n handleChange(event){\n var val = event.target.value;\n this.props.onContentChange(val);\n }<\/p>\n render(){\n return (<\/p>\n\n \u30b3\u30f3\u30c6\u30f3\u30c4<\/label>\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3044\u304d\u306a\u308a\u30bd\u30fc\u30b9\u5168\u90e8\u8cbc\u308a\u4ed8\u3051\u305f\u306e\u3067 \u304e\u3087\u3063\u3068\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u30fb\u30fb\u30fb\n\u3053\u3053\u307e\u3067\u306e\u3053\u3068\u304c\u7406\u89e3\u3067\u304d\u3066\u3044\u305f\u3089\u306a\u3093\u3068\u304b\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u307e\u305a\u306f render\u30e1\u30bd\u30c3\u30c9\u304b\u3089\u8aac\u660e\u3002<\/p>\ndiv\u30bf\u30b0\u306e\u4e2d\u306blabel\uff11\u3064\u3068\u3001input\uff11\u3064\u3068button\uff11\u3064\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u307e\u3059\u3002\nlabel\u306f\u5358\u306a\u308b\u76ee\u5370\u306a\u306e\u3067\u8aac\u660e\u306f\u7701\u7565\u3059\u308b\u3068\u3057\u3066\u30fb\u30fb\u30fb<\/p>\ninput \u306fToDo\u306e\u4e2d\u8eab\u3092\u8a18\u8ff0\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u3067\u3059\u3002\nbutton \u306fToDo\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u30dc\u30bf\u30f3\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3053\u3053\u3067\u6539\u3081\u3066ToDoList\u5168\u4f53\u304c\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u304c\u4f55\u3060\u3063\u305f\u304b\u601d\u3044\u51fa\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf<\/li>\nToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024<\/li>\n\u30c7\u30fc\u30bf\u306eID\u306e\u6700\u5927\u5024<\/li>\n<\/ul>\n\u305d\u3057\u3066\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf\u306f\u3059\u3079\u3066\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9 ToDoList\u3067\u7ba1\u7406\u3055\u308c\u308b\u306e\u3067\u3057\u305f\u3002\n\u3064\u307e\u308aNewToDo\u30af\u30e9\u30b9\u306e input \u306b\u5165\u529b\u3055\u308c\u305f\u5024\u306f\u3001NewToDo\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b\u306e\u3067\u306f\u306a\u304f\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\n\u305d\u3057\u3066\u3001NewToDo\u30af\u30e9\u30b9\u306ebutton\u30af\u30ea\u30c3\u30af\u3067ToDo\u30ea\u30b9\u30c8\u306b\u8ffd\u52a0\u3057\u305f\u3044\u304c\u3001\u3053\u308c\u3082\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u3053\u3068\u3092\u901a\u77e5\u3057\u3066\u3001\u51e6\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n\u3053\u306e\u3053\u3068\u304c<\/p>\n[bash]\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n[\/bash]<\/p>\ninput\u3067\u306f onChange \u3064\u307e\u308a\u5024\u304c\uff11\u6587\u5b57\u3067\u3082\u5909\u5316\u3059\u308b\u305f\u3073\u306b\u3001\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002\n\u30dc\u30bf\u30f3\u306e\u30af\u30ea\u30c3\u30af\u306f click\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002<\/p>\n\u3053\u308c\u3060\u3051\u3067\u3059\u3002NewToDo\u30af\u30e9\u30b9\u306f\u81ea\u5206\u3067\u3059\u308b\u3053\u3068\u306f\u3001\u307b\u3068\u3093\u3069\u306a\u306b\u3082\u3042\u308a\u307e\u305b\u3093\u3002\n\u5909\u5316\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u304c\u3042\u3063\u305f\u3053\u3068\u3092\u89aa\u30af\u30e9\u30b9\u3078\u901a\u77e5\u3057\u3066\u3044\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3067\u306f\u6700\u5f8c\u3001\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e ToDoList\u30af\u30e9\u30b9\u3092\u8997\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }<\/p>\n handleContentChange(ct){\n this.setState({content: ct});\n }<\/p>\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleOnAdd()}\n onContentChange={(ct) => this.handleContentChange(ct)}\n \/>\n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u307e\u305a\u6ce8\u76ee\u3057\u3066\u3044\u305f\u3060\u304d\u305f\u3044\u306e\u306f render\u30e1\u30bd\u30c3\u30c9\u3002<\/p>\n\nNewToDo\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\nDataList\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\n<\/ul>\nNewToDo\u30af\u30e9\u30b9\u306e onAdd\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnAdd\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002\nonContentChange\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleContentChange\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnDelete\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u306e\u65b9\u306f\u3059\u3067\u306b\u8aac\u660e\u6e08\u307f\u306a\u306e\u3067\u3001NewToDo\u30af\u30e9\u30b9\u306e\u65b9\u306e\u8aac\u660e\u3092\u3057\u307e\u3059\u3002<\/p>\n[bash]\n handleContentChange(ct){\n this.setState({content: ct});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e input\uff08\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\uff09\u3067\u8d77\u3053\u3063\u305f\u5024\u306e\u5909\u5316\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\nsetState\u30e1\u30bd\u30c3\u30c9\u3067 \u30b9\u30c6\u30fc\u30c8\u3092\u5909\u66f4\u3002<\/p>\n[bash]\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e\u30dc\u30bf\u30f3\u30af\u30ea\u30c3\u30af\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\u3001\n\u6700\u5927\u5024\u3092\uff11\u52a0\u7b97\u3057\u3066\u3001ToDo\u30c7\u30fc\u30bf\u306e\u6700\u5f8c\u5c3e\u306b\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0(push)\u3002<\/p>\n\u305d\u3057\u3066\u3001setState\u3067\u3000maxId\u3068content\u3068datas \u306e\u5909\u66f4\u3092\u4f1d\u3048\nReactJS\u306b\u30ec\u30f3\u30c0\u30fc\u3092\u4f9d\u983c\u3057\u307e\u3059\u3002<\/p>\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u3088\u3046\u3084\u304fToDo\u30ea\u30b9\u30c8\u306e\u5b8c\u6210\u3067\u3059\u3002<\/p>\n\u90e8\u5206\u90e8\u5206\u3092\u5207\u308a\u53d6\u3063\u305f\u30bd\u30fc\u30b9\u3067\u898b\u3065\u3089\u304b\u3063\u305f\u3068\u601d\u3044\u307e\u3059\u306e\u3067\u3001\u5168\u30bd\u30fc\u30b9\u3092\u4ee5\u4e0b\u306b\u8cbc\u308a\u4ed8\u3051\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n[bash]<\/p>\n<\/div>\n
);\n }\n[\/bash]<\/p>\n
\u809d\u5fc3\u306a\u3053\u3068\u3092\u5fd8\u308c\u3066\u3044\u307e\u3057\u305f\u3002\n\uff13\u3064\u306e\u30d1\u30fc\u30c4\u3092\u5305\u542b\u3059\u308b\u4e00\u756a\u5927\u304d\u306a\u30d1\u30fc\u30c4\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u308c\u3092ToDoList\u30af\u30e9\u30b9\u3068\u3057\u307e\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306e\u30bd\u30fc\u30b9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);<\/p>\n
this.state = {\n datas: props.datas\n }\n }<\/p>\n
render(){\n return (<\/p>\n
ToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001NewToDo\u30bf\u30b0\u3068DataList\u30bf\u30b0\u3092\u69cb\u7bc9\u3057\u3066\u3044\u308b\u306e\u304c\u89e3\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u305d\u3057\u3066 DataList\u30bf\u30b0\u306e datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b this.state.datas\u3000\u3092\u6e21\u3057\u3066\u3044\u307e\u3059\u3002\nthis.state.datas\u3000\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\uff1f\nstate\u3068\u306f\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u52d5\u7684\u306a\u5909\u6570\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n
\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n
\u3067\u3001\u5b9f\u969b\u306b\u3053\u3053\u3067\u306f\u3000this.state.datas\u3000\u306b\u4f55\u304c\u5165\u3063\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u6700\u521d\u306e\u65b9\u3067\u8aac\u660e\u3057\u305f\nToDo\u30ea\u30b9\u30c8\u306e\u4e2d\u8eab\u3067\u3042\u308b DATAS\u5909\u6570\u304c\u5165\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u3053\u308c\u3067\u306f\u8a00\u8449\u8db3\u3089\u305a\u3067\u3059\u306d\u3002\nToDoList\u30af\u30e9\u30b9\u304c\u5168\u30af\u30e9\u30b9\u306e\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u3067\u3042\u308b\u306e\u3067\u3001\nReactDOM.render \u3067\u306f\u3000ToDoList\u30af\u30e9\u30b9\u3092\u3000render\u3057\u3066\u3082\u3089\u3044\u307e\u3059\u3002\n\u30bd\u30fc\u30b9\u3067\u66f8\u304f\u3068\u3053\u3093\u306a\u611f\u3058\u3002<\/p>\n
[bash]\nReactDOM.render(\n ,\n document.getElementById(“root”)\n);<\/p>\n
[\/bash]<\/p>\n
\u3067\u3001\u3053\u308c\u3060\u3051\u3060\u3068\u3001ToDoList\u306e\u521d\u671f\u5024\u3092\u6e21\u305b\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u306a\u308b\u306e\u3067\u3001\n\u6b63\u3057\u304f\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\u8981\u306f\u30af\u30e9\u30b9\u5185\u3067\u4f7f\u3044\u305f\u3044\u30c7\u30fc\u30bf\u306f \u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u305d\u3046\u306d\u3002\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u30c7\u30fc\u30bf\u3068\u306f\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u3082\u306e\u306a\u306e\u3067\u3000\uff5b\uff5d\u3000\u3067\u62ec\u3063\u3066\u6e21\u305d\u3046\u306d\u3068\u3044\u3046\u30eb\u30fc\u30eb\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
[bash]\n var DATAS = [\n {id:1, content:”Softbank\u89e3\u7d04”},\n {id:2, content:”R-SIM10\u8cfc\u5165”},\n {id:3, content:”\u570f\u5916\u75c5\u3092\u514b\u670d\u3059\u308bSIM\u30d5\u30ea\u30fc\u30eb\u30fc\u30bf\u30fc\u30b2\u30c3\u30c8”},\n {id:4, content:”\u697d\u5929\u30e2\u30d0\u30a4\u30eb\u7533\u3057\u8fbc\u307f”}\n ]<\/p>\n
ReactDOM.render(\n ,\n document.getElementById(“root”)\n );\n[\/bash]<\/p>\n
\u3067\u3001\u307e\u3060\u3053\u308c\u3067\u3082 DataList\u30af\u30e9\u30b9\u306e\u3000this.props.datas\u3000\u306b DATAS\u306e\u5024\u304c\u6e21\u3063\u3066\u3044\u304f\u4ed5\u7d44\u307f\u304c\u8aac\u660e\u3067\u304d\u3066\u3044\u307e\u305b\u3093\u306d\u3002\nDataList\u30af\u30e9\u30b9\u306f\u3000ToDoList\u30af\u30e9\u30b9\u306e\u5b50\u4f9b\u3067\u3059\u3002\u3064\u307e\u308a DataList\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\n\u4f5c\u6210\u3055\u308c\u3001\u305d\u306e\u6642\u306bDataList\u30af\u30e9\u30b9\u304c\u6271\u3046\u5909\u6570\u3068\u3057\u3066 datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u3092\u6e21\u3059\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u65e5\u672c\u8a9e\u3067\u66f8\u304f\u3068\u3084\u3084\u3053\u3057\u3044\u3067\u3059\u306d\u3002\n\u3064\u307e\u308a\u306f\u3001ToDoList\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3000\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3053\u3068\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n this.state = {\n datas: props.datas\n }\n }<\/p>\n
);\n }\n }<\/p>\n
render\u30e1\u30bd\u30c3\u30c9\u306e\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f\u5909\u6570\u306f\u3001 \u30af\u30e9\u30b9\u5185\u3067 props\uff08\u30d7\u30ed\u30d1\u30c6\u30a3\uff09\u3068\u3057\u3066\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\nToDoList\u30af\u30e9\u30b9\u306f datas\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u6e21\u3055\u308c\u305f DATAS\u5909\u6570\u306e\u4e2d\u8eab\u3092\u81ea\u8eab\u306e\u30af\u30e9\u30b9\u306e state\u3068\u3057\u3066\u7ba1\u7406\u3057\u3088\u3046\u3068\u3057\u307e\u3059\u3002\n\u3053\u308c\u304c constructor\u306e\u4e2d\u306b\u3042\u308b\u3002<\/p>\n
this.state = {datas: this.props.datas};<\/p>\n
\u3053\u308c\u3067 ToDoList\u30af\u30e9\u30b9 \u5185\u3067\u306f this.state.datas \u3067 DATAS\u306e\u5185\u5bb9\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n\u3084\u3063\u3068\u3053\u308c\u3067 DataList\u306b DATAS\u306e\u5024\u304c\u6e21\u308b\u3053\u3068\u304c\u8aac\u660e\u3067\u304d\u307e\u3057\u305f\u304b\u306d\u30fb\u30fb\u30fb<\/p>\n
\u3067\u306f\u3001\u6b21\u306fDataList\u306e render\u30e1\u30bd\u30c3\u30c9\u3067ToDo\u306e\u4e00\u884c\u4e00\u884c\u3092\u69cb\u6210\u3059\u308bDataLine\u30af\u30e9\u30b9\u3092\u4f5c\u3063\u3066\u3044\u308b\u3068\u3053\u308d\u3092\n\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
for (i=0; i < this.props.datas.length; i++){\n var data = this.props.datas[i];\n dlist.push();\n }<\/p>\n
\u914d\u5217\u5909\u6570 dlist\u306b DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092push\u3057\u3066\u3044\u3063\u3066\u307e\u3059\u306d\u3002\n\u305d\u3057\u3066\u3001DataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e data\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b DATAS\u306e\uff11\u884c\u306e\u5024\n\u3064\u307e\u308aToDo\u4e00\u4ef6\u3092\u30c7\u30fc\u30bf\u3068\u3057\u3066\u6e21\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306f this.props.data\u3067\u3053\u306e\u5024\u3092\u53c2\u7167\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\nkey\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b\u3064\u3044\u3066\u3067\u3059\u304c\u3001ReactJS\u3067\u306f\u7e70\u308a\u8fd4\u3057\u30eb\u30fc\u30d7\u3067\u540c\u3058\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u751f\u6210\n\u3059\u308b\u3068\u304d\u306f\u3001\uff11\u3064\uff11\u3064\u3092\u30e6\u30cb\u30fc\u30af\u306b\u3059\u308b\u5024\u3092\u30ad\u30fc(key)\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\n\u3068\u3044\u3046\u30eb\u30fc\u30eb\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u3053\u3053\u3067\u306f DATAS\u306e\u4e2d\u306e\u30c7\u30fc\u30bf\u306e id\u3092\u30ad\u30fc\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3067\u306f\u3001ToDo\u306e\uff11\u4ef6\u306b\u3042\u305f\u308bDataLine\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u306a\u306b\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb<\/p>\n
[bash]\n class DataLine extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n
\u3053\u306e\u3088\u3046\u306bDataLine\u30af\u30e9\u30b9\u306erender\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u30dc\u30bf\u30f3\uff11\u3064\u3068\u3001\u6587\u5b57\u5217\u3068\u3057\u3066\u306e\u30c7\u30fc\u30bf\u306eid\u3068content\u3092\u51fa\u529b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3053\u3053\u307e\u3067\u3067\u3001\u3088\u3046\u3084\u304f\u3001ToDoList\u3067\u524a\u9664\u30dc\u30bf\u30f3\u4ed8\u304d\u306e\u4e00\u89a7\u304c\u3067\u304d\u307e\u3057\u305f\u3002\n\u3067\u3082\u3001\u3053\u308c\u3058\u3083\u307e\u3060ToDo\u3082\u8ffd\u52a0\u3067\u304d\u306a\u3044\u3057\u3001\u524a\u9664\u3082\u3067\u304d\u306a\u3044\u3002<\/p>\n
\u307e\u305a\u306f\u3001\u524a\u9664\u306e\u65b9\u306e\u8aac\u660e\u306b\u5165\u308a\u307e\u3057\u3087\u3046\u3002\n\u3067\u3001\u524a\u9664\u3092\u8003\u3048\u308b\u524d\u306b\u3001ReactJS\u3067\u30a2\u30d7\u30ea\u3092\u69cb\u7bc9\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u8aac\u660e\u3057\u3066\u304a\u304d\u307e\u3059\u3002\n\u30a2\u30d7\u30ea\u306f\u3069\u3093\u306a\u30d1\u30fc\u30c4\u3067\u69cb\u6210\u3055\u308c\u308b\u304b\u30fb\u30fb\u30fb\u3001\u3053\u308c\u306f\u3082\u3046\u8aac\u660e\u6e08\u307f\u3067\u3059\u306d\u3002\n\u6b21\u306b\u30a2\u30d7\u30ea\u3067\u52d5\u7684\u306b\u5909\u5316\u3059\u308b\u5024\u3067\u7ba1\u7406\u3057\u3066\u3044\u304b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\u306f\u4f55\u304b\u30fb\u30fb\u30fb\n\u3053\u308c\u3092\u8003\u3048\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n
\u306a\u3093\u3067\u3059\u3002\n\u305d\u3057\u3066\u3001\u3082\u3046\u3061\u3087\u3063\u3068\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u30fb\u30fb\u30fb\u3001\u4ed6\u306e\u5024\u304b\u3089\u8a08\u7b97\u3057\u305f\u308a\u3057\u3066\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u5024\u306f\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u306f\u7ba1\u7406\u3057\u307e\u305b\u3093\u3002\n\u3069\u3046\u8a08\u7b97\u3057\u3088\u3046\u3068\u3057\u3066\u3082\u3001\u3069\u3053\u304b\u3089\u3082\u5c0e\u304d\u51fa\u305b\u306a\u3044\u5909\u5316\u3059\u308b\u5024\u306e\u307f\u3092\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n
\u3055\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306b\u304a\u3044\u3066\u30b9\u30c6\u30fc\u30c8\u306f\u306a\u306b\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb<\/p>\n
\u307e\u305a\u5f53\u7136\u3067\u3059\u304cToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf\u3067\u3059\u306d\u3002\n\u305d\u3057\u3066\u3082\u3046\u3072\u3068\u3064\u3001ToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024\u3067\u3059\u3002\n\u305d\u3057\u3066\u305d\u3057\u3066\u3001\u6700\u5f8c\u306b\u3082\u3046\u3072\u3068\u3064\u3002ToDo\u30ea\u30b9\u30c8\uff11\u4ef6\uff11\u4ef6\u306f\u30e6\u30cb\u30fc\u30af\u306a\u3082\u306e\u306a\u306e\u3067\u3001\nToDo\uff11\u4ef6\u306b\u5bfe\u3057\u3066\uff11\u3064\u306eID\u3092\u6301\u3061\u307e\u3059\u3002\u305d\u306eID\u306f\u91cd\u8907\u3057\u3066\u306f\u3044\u3051\u306a\u3044\u306e\u3067\u3000ID\u306e\u6700\u5927\u5024\u3092\n\u30b9\u30c6\u30fc\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n
\u3067\u3001\u307e\u305f\u307e\u305f\u3053\u3053\u3082\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb\u30fb\n\u30b9\u30c6\u30fc\u30c8\u3092\u8ab0\u304c\u3001\u3064\u307e\u308a\u3069\u306e\u30af\u30e9\u30b9\u304c\u7ba1\u7406\u3059\u308b\u304b\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u304c\u30fb\u30fb<\/p>\n
\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u53b3\u5bc6\u306b\u8a00\u3046\u3068\u3001\u672c\u5f53\u306f\u3053\u308c\u306f\u5618\u3060\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u6163\u308c\u306a\u3044\u3046\u3061\u306f\n\u4e00\u756a\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u308b\u306e\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002\n\u3064\u307e\u308a\u4eca\u56de\u306eToDo\u30ea\u30b9\u30c8\u3067\u8a00\u3046\u3068\u3000ToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3055\u305b\u307e\u3059\u3002<\/p>\n
[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n
this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }\n[\/bash]<\/p>\n
\u3088\u3063\u3066 ToDoList\u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u4e0a\u8a18\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\n\uff08\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u306f\u30b9\u30c6\u30fc\u30c8\u3067\u7ba1\u7406\u3059\u308b\u5024\u306e\u521d\u671f\u5024\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\uff09<\/p>\n
\u305d\u3057\u3066\u3001 this.state = \u3068\u8a18\u8ff0\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u8a2d\u5b9a\u3067\u304d\u308b\u306e\u306f\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3060\u3051\u3060\u3068\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
ReactJS\u3067\u306f\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u304c\u5909\u5316\u3059\u308b\u3068\u5fc5\u8981\u306a\u3068\u3053\u308d\u3060\u3051\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3092\u81ea\u52d5\u3067\u884c\u3044\u307e\u3059\u3002\n\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u30bb\u30c3\u30c8\u3057\u3066\u81ea\u52d5\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u306b\u306f\n\u30af\u30e9\u30b9\u306e\u3000setState\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002\n\u4f8b\u3048\u3070\u3001ToDo\u30ea\u30b9\u30c8\u306e\u6700\u5927ID(maxId)\u3092\u5909\u5316\u3055\u305b\u3088\u3046\u3068\u3059\u308b\u306a\u3089\u3070\n\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3059\u308b\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067<\/p>\n
[bash]\nthis.setState({maxId: xxxx});\n[\/bash]<\/p>\n
\u3068\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nID\u306e\u6700\u5927\u5024\u3092\u5909\u3048\u3066\u3082\u3001\u753b\u9762\u4e0a\u5909\u5316\u3059\u308b\u5fc5\u8981\u306e\u3042\u308b\u3068\u3053\u308d\u306f\u306a\u3044\u306e\u3067ReactJS\u306f\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u306e\u307f\u3092\u5909\u5316\u3055\u305b\u3001\u306a\u306b\u3082\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306f\u884c\u3044\u307e\u305b\u3093\u3002<\/p>\n
ToDo\u30ea\u30b9\u30c8\u304b\u3089\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u3053\u3068\u3092\u8003\u3048\u308b\u3068\u30fb\u30fb\u30fb\nToDoList\u30af\u30e9\u30b9\u5185\u306e\u4f55\u3089\u304b\u306e\u30e1\u30bd\u30c3\u30c9\u3067<\/p>\n
[bash]\nvar newDatas = [];\nvar i;<\/p>\n
for (i = 0 ; i < this.state.datas.length ; i++){\n var data = this.state.datas[i];\n if (data.id != \u524a\u9664\u3059\u308bID){\n newDatas.push(data);\n }\n}<\/p>\n
this.setState({datas: newDatas});\n[\/bash]<\/p>\n
\u3068\u3057\u3066\u3084\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\nReactJS\u304c\u7ba1\u7406\u3059\u308b datas\u30b9\u30c6\u30fc\u30c8\u304c\u5909\u5316\u3059\u308b\u3068\u3001\u305d\u306e\u5909\u6570\u306e\u5024\u3092\u4f7f\u3063\u3066\n\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u90e8\u5206\u304c\u81ea\u52d5\u7684\u306b\u8abf\u6574\u3055\u308c\u308b\u306e\u3067\u3059\u3002\n\u4f8b\u3048\u3070 jQuery\u306a\u3093\u304b\u3067\u540c\u3058\u3088\u3046\u306a\u3053\u3068\u3092\u3057\u3088\u3046\u3068\u601d\u3048\u3070\u3001\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u306e\u30bf\u30b0\u306e\u5b50\u4f9b\u3092\uff08ToDo\uff11\u4ef6\uff09\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\n\u4e0d\u8981\u306a\u884c\u306eHTML\u30bf\u30b0\u3092 remove\u3059\u308b\u306a\u3069\u3067\u3059\u306d\u3002<\/p>\n
\u3067\u306f\u6b21\u306b\u30da\u30fc\u30b8\u4e0a\u3067\u8d77\u3053\u308b\u30a4\u30d9\u30f3\u30c8\u306f\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u6271\u3046\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\n\u307e\u305a\u3001ToDo\u4e00\u4ef6\u3092\u524a\u9664\u3059\u308b\u51e6\u7406\u3001\u3064\u307e\u308aToDo\u30ea\u30b9\u30c8\u306e\u5de6\u5074\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308b\n\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u305f\u51e6\u7406\u3092\u3069\u3053\u306b\u8a18\u8ff0\u3057\u3066\u3001\u30af\u30ea\u30c3\u30af\u306b\u3088\u3063\u3066\n\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u300c\u524a\u9664\u30dc\u30bf\u30f3\u300d\u306fDataLine\u30af\u30e9\u30b9\u5185\u3067\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\n\u5f53\u7136\u30af\u30ea\u30c3\u30af\u30a4\u30d9\u30f3\u30c8\u306e\u51e6\u7406\u306fDataLine\u30af\u30e9\u30b9\u5185\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n
\u3069\u3046\u66f8\u304f\u304b\u3068\u3044\u3046\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
handleClick(event){\n this.props.onDelete(this.props.data.id);\n }<\/p>\n
\u3053\u3053\u306f\u7d50\u69cb\u666e\u901a\u306a\u306e\u3067\u3059\u304c\u3001\u524a\u9664\u30dc\u30bf\u30f3\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u3044\u308b\u90e8\u5206\u3067\nonClick\u30a4\u30d9\u30f3\u30c8\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308a\u307e\u3059\u3002\nReactJS\u3067\u306f onclick<\/strong>\u3067\u306f\u306a\u304f\u3001onClick<\/strong>\u3067\u3059\u3002\n\u305d\u3057\u3066onClick\u3092\u51e6\u7406\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e handleClick\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u307e\u3059\u3002<\/p>\n\u3067\u3001handelClick\u30e1\u30bd\u30c3\u30c9\u5185\u306e\u8a18\u8ff0\u3092\u898b\u3066\u307f\u308b\u3068<\/p>\n[bash]\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }\n[\/bash]<\/p>\n\u3068\u306a\u3063\u3066\u3044\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306edatas\u3000\u3092\u524a\u9664\u3057\u3066\u3044\u307e\u305b\u3093\u306d\u3002\n\u306a\u305c\u304b\u3068\u3044\u3046\u3068\u3001\u4eca\u56de\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u306f\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9ToDoList\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3057\u3066\u3044\u308b\u304b\u3089\u30fb\u30fb\n\u305d\u306e\u5909\u6570\u3092\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u3001\u524a\u9664\u3067\u304d\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3069\u3046\u3059\u308b\u304b\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u51e6\u7406\u3067\u304d\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306b\u304a\u9858\u3044\u3059\u308c\u3070\u826f\u3044<\/h4>\n[bash]\nthis.props.onDelete(this.props.data.id);\n[\/bash] <\/p>\n\u3053\u308c\u306f\u3001\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b onDelete\u3068\u3044\u3046\u306e\u3092\u4f5c\u308b\u3068\u3044\u3046\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\n\u305d\u3057\u3066\u305d\u308c\u306f\u5909\u6570\u3092\u7ba1\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u306f\u306a\u304f\u3066\u3001\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3060\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u96e3\u3057\u3044\u3067\u3059\u306d\u3002\u304b\u306a\u308a\u9811\u5f35\u3063\u3066\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\nDataLine\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3042\u308b\u3002\n\u3067\u30fb\u30fb\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u3092DataLine\u30af\u30e9\u30b9\u3088\u308a\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u51e6\u7406\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308b\u304b\u3068\u3044\u3046\u3068\nDataLine\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u90e8\u5206\u306b\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3068\u3057\u3066\u3001\u4e0a\u4f4d\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002\n\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \u30b9\u30c6\u30fc\u30c8\u3092\u306a\u3093\u3068\u304b\u524a\u9664\u3057\u3088\u3046\u3068\u52aa\u529b\u3059\u308b\u3002\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u4eca\u56de\u306e\u4f8b\u3067\u8a00\u3046\u3068\u3001DataLine\u306e\uff11\u3064\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306f DataList\u30af\u30e9\u30b9\u306a\u306e\u3067\u30fb\u30fb\u30fb\n\u30c7\u30fc\u30bf\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u5909\u6570\u3092\u53c2\u7167\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\u51fa\u6765\u306a\u3044\uff1f\uff1f\uff1f\uff1f<\/p>\n\u3068\u601d\u3046\u65b9\u3082\u3044\u3089\u3063\u3057\u3083\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\nDataList\u306f\u30c7\u30fc\u30bf\u306e\u4e00\u89a7\u3092\u51fa\u529b\u3057\u3066\u308b\u3093\u3060\u304b\u3089\u3001\u5909\u6570\u306e\u5024\u3092\u524a\u9664\u3067\u304d\u308b\u3058\u3083\u3093\u3002\n\u305d\u3046\u601d\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002<\/p>\n\u3067\u3082 ReactJS\u306e\u9244\u5247<\/p>\n\u30b9\u30c6\u30fc\u30c8\u306f\u6700\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b<\/h4>\nDataList\u306f\u6700\u4e0a\u4f4d\u3058\u3083\u3042\u308a\u307e\u305b\u3093\u306d\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3057\u3066\u3044\u306a\u3044\u3002\n\u306a\u306e\u3067\u3001\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u524a\u9664\u3067\u304d\u307e\u305b\u3093\u3002\n\u4e00\u89a7\u30c7\u30fc\u30bf\u306f\u30b9\u30c6\u30fc\u30c8(state)\u3067\u306f\u306a\u304f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3(props)\u3067\u53c2\u7167\u3067\u304d\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3058\u3083\u3042\u56f0\u3063\u305f\u30fb\u30fb\u30fb\u3000\u3069\u3046\u3059\u308a\u3083\u3044\u3044\u3093\u3060\u3068\u306a\u308a\u307e\u3059\u304c\u30fb\u30fb\u30fb<\/p>\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u3067\u30b9\u30c6\u30fc\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u3053\u3068\u304c\u51fa\u6765\u306a\u3044\u306a\u3089\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308a\u3083\u3044\u3044<\/h4>\n\u3067\u3001\u4f1d\u3048\u308b\u65b9\u6cd5\u3067\u3059\u304c\u3001\u3053\u308c\u306fDataLine\u30af\u30e9\u30b9\u306e onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u540c\u3058\u3067\u3001\nDataList\u30af\u30e9\u30b9\u306b\u3082 onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f5c\u308a\u3001\u305d\u3053\u3092\u7d4c\u7531\u3057\u3066\u3001\u6700\u4e0a\u4f4d\u306e\nToDoList\u30af\u30e9\u30b9\u306b\u60c5\u5831\u3092\u4f1d\u3048\u308a\u3083\u3044\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\u3067\u306f\u3001\u5148\u307b\u3069\u306e\u90e8\u5206\u3092\u66f8\u304d\u63db\u3048\u3066\u307f\u307e\u3059\u3002<\/p>\n[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n handleDelete(id){\n \/\/\u30b9\u30c6\u30fc\u30c8\u3092\u76f4\u63a5\u524a\u9664\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308b\u3002\n this.props.onDelete(id);\n }<\/p>\n render(){<\/p>\n\n \n <\/div>\n }\n}\n[\/bash]<\/p>\n\u3067\u3001DataList\u30af\u30e9\u30b9\u306e\u4e0a\u4f4d\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306a\u306e\u3067\u3001\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067 DataList\u30af\u30e9\u30b9\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u969b\u306b\nonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u3092 ToDoList\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9\u3078\u8ee2\u9001\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002<\/p>\n\u5177\u4f53\u7684\u306b\u306f\u3001<\/p>\n[bash]\n class ToDoList extends React.Component{<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n \n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3053\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\n\u306a\u306b\u3092\u3057\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u3000DataList\u30af\u30e9\u30b9\u5185\u3067\u8d77\u3053\u3063\u305f\u3000onDelete\u30a4\u30d9\u30f3\u30c8\u306f\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9 handleOnDelete\u3067\u51e6\u7406\u3059\u308b\u3088\u3002\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\nToDoList\u30af\u30e9\u30b9\u306ehandleOnDelete\u3067\u306f\u3001\u3088\u3046\u3084\u304f ToDo\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\n\u3067\u304d\u308b\u306e\u3067\u3001\u3044\u3088\u3044\u3088\u3053\u3053\u3067\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u307e\u3059\u3002<\/p>\nhandleOnDelete\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3092\u898b\u3066\u3044\u305f\u3060\u304f\u3068\u30fb\u30fb\u30fb\nstate.datas\u3000\u3092\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\u3001\u305d\u306e\u30c7\u30fc\u30bf\u306eid\u304c\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3063\u3066\u304d\u305f\u3002\n\u524a\u9664\u5bfe\u8c61ID\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3001\u5bfe\u8c61\u5916\u306a\u3089\u65b0\u305f\u306a\u914d\u5217\u5909\u6570\u306bpush\u3059\u308b\u3002<\/p>\n\u305d\u3057\u3066\u3001\u5168\u30c7\u30fc\u30bf\u306e\u30eb\u30fc\u30d7\u304c\u7d42\u308f\u3063\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067<\/p>\n[bash]\n this.setState({datas: newDatas});\n[\/bash]<\/p>\n\u3068\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u66f4\u3092ReactJS\u306b\u901a\u77e5\u3057\u3066\u3044\u307e\u3059\u3002\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u7406\u89e3\u3067\u304d\u307e\u3057\u305f\u304b\uff1f\uff1f<\/p>\n\u3067\u306f\u6b21\u884c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002\n\u3044\u3088\u3044\u3088ToDo\u306e\u8ffd\u52a0\u3067\u3059\u3002<\/p>\n\u8ffd\u52a0\u306f NewToDo\u30af\u30e9\u30b9\u3067\u884c\u3044\u307e\u3059\u3002<\/p>\n[bash]\n class NewToDo extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n handleClick(){\n this.props.onAdd();\n }<\/p>\n handleChange(event){\n var val = event.target.value;\n this.props.onContentChange(val);\n }<\/p>\n render(){\n return (<\/p>\n\n \u30b3\u30f3\u30c6\u30f3\u30c4<\/label>\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u3044\u304d\u306a\u308a\u30bd\u30fc\u30b9\u5168\u90e8\u8cbc\u308a\u4ed8\u3051\u305f\u306e\u3067 \u304e\u3087\u3063\u3068\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u30fb\u30fb\u30fb\n\u3053\u3053\u307e\u3067\u306e\u3053\u3068\u304c\u7406\u89e3\u3067\u304d\u3066\u3044\u305f\u3089\u306a\u3093\u3068\u304b\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u307e\u305a\u306f render\u30e1\u30bd\u30c3\u30c9\u304b\u3089\u8aac\u660e\u3002<\/p>\ndiv\u30bf\u30b0\u306e\u4e2d\u306blabel\uff11\u3064\u3068\u3001input\uff11\u3064\u3068button\uff11\u3064\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u307e\u3059\u3002\nlabel\u306f\u5358\u306a\u308b\u76ee\u5370\u306a\u306e\u3067\u8aac\u660e\u306f\u7701\u7565\u3059\u308b\u3068\u3057\u3066\u30fb\u30fb\u30fb<\/p>\ninput \u306fToDo\u306e\u4e2d\u8eab\u3092\u8a18\u8ff0\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u3067\u3059\u3002\nbutton \u306fToDo\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u30dc\u30bf\u30f3\u3067\u3059\u3002<\/p>\n\u3067\u306f\u3001\u3053\u3053\u3067\u6539\u3081\u3066ToDoList\u5168\u4f53\u304c\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u304c\u4f55\u3060\u3063\u305f\u304b\u601d\u3044\u51fa\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\nToDo\u30ea\u30b9\u30c8\u306e\u4e00\u89a7\u30c7\u30fc\u30bf<\/li>\nToDo\u30ea\u30b9\u30c8\u306e\uff11\u4ef6\u3092\u5024\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u306b\u5165\u529b\u3055\u308c\u305f\u5024<\/li>\n\u30c7\u30fc\u30bf\u306eID\u306e\u6700\u5927\u5024<\/li>\n<\/ul>\n\u305d\u3057\u3066\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf\u306f\u3059\u3079\u3066\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9 ToDoList\u3067\u7ba1\u7406\u3055\u308c\u308b\u306e\u3067\u3057\u305f\u3002\n\u3064\u307e\u308aNewToDo\u30af\u30e9\u30b9\u306e input \u306b\u5165\u529b\u3055\u308c\u305f\u5024\u306f\u3001NewToDo\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b\u306e\u3067\u306f\u306a\u304f\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\n\u305d\u3057\u3066\u3001NewToDo\u30af\u30e9\u30b9\u306ebutton\u30af\u30ea\u30c3\u30af\u3067ToDo\u30ea\u30b9\u30c8\u306b\u8ffd\u52a0\u3057\u305f\u3044\u304c\u3001\u3053\u308c\u3082\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u3053\u3068\u3092\u901a\u77e5\u3057\u3066\u3001\u51e6\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n\u3053\u306e\u3053\u3068\u304c<\/p>\n[bash]\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n[\/bash]<\/p>\ninput\u3067\u306f onChange \u3064\u307e\u308a\u5024\u304c\uff11\u6587\u5b57\u3067\u3082\u5909\u5316\u3059\u308b\u305f\u3073\u306b\u3001\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002\n\u30dc\u30bf\u30f3\u306e\u30af\u30ea\u30c3\u30af\u306f click\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002<\/p>\n\u3053\u308c\u3060\u3051\u3067\u3059\u3002NewToDo\u30af\u30e9\u30b9\u306f\u81ea\u5206\u3067\u3059\u308b\u3053\u3068\u306f\u3001\u307b\u3068\u3093\u3069\u306a\u306b\u3082\u3042\u308a\u307e\u305b\u3093\u3002\n\u5909\u5316\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u304c\u3042\u3063\u305f\u3053\u3068\u3092\u89aa\u30af\u30e9\u30b9\u3078\u901a\u77e5\u3057\u3066\u3044\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3067\u306f\u6700\u5f8c\u3001\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e ToDoList\u30af\u30e9\u30b9\u3092\u8997\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }<\/p>\n handleContentChange(ct){\n this.setState({content: ct});\n }<\/p>\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleOnAdd()}\n onContentChange={(ct) => this.handleContentChange(ct)}\n \/>\n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u307e\u305a\u6ce8\u76ee\u3057\u3066\u3044\u305f\u3060\u304d\u305f\u3044\u306e\u306f render\u30e1\u30bd\u30c3\u30c9\u3002<\/p>\n\nNewToDo\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\nDataList\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\n<\/ul>\nNewToDo\u30af\u30e9\u30b9\u306e onAdd\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnAdd\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002\nonContentChange\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleContentChange\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnDelete\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u306e\u65b9\u306f\u3059\u3067\u306b\u8aac\u660e\u6e08\u307f\u306a\u306e\u3067\u3001NewToDo\u30af\u30e9\u30b9\u306e\u65b9\u306e\u8aac\u660e\u3092\u3057\u307e\u3059\u3002<\/p>\n[bash]\n handleContentChange(ct){\n this.setState({content: ct});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e input\uff08\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\uff09\u3067\u8d77\u3053\u3063\u305f\u5024\u306e\u5909\u5316\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\nsetState\u30e1\u30bd\u30c3\u30c9\u3067 \u30b9\u30c6\u30fc\u30c8\u3092\u5909\u66f4\u3002<\/p>\n[bash]\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e\u30dc\u30bf\u30f3\u30af\u30ea\u30c3\u30af\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\u3001\n\u6700\u5927\u5024\u3092\uff11\u52a0\u7b97\u3057\u3066\u3001ToDo\u30c7\u30fc\u30bf\u306e\u6700\u5f8c\u5c3e\u306b\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0(push)\u3002<\/p>\n\u305d\u3057\u3066\u3001setState\u3067\u3000maxId\u3068content\u3068datas \u306e\u5909\u66f4\u3092\u4f1d\u3048\nReactJS\u306b\u30ec\u30f3\u30c0\u30fc\u3092\u4f9d\u983c\u3057\u307e\u3059\u3002<\/p>\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u3088\u3046\u3084\u304fToDo\u30ea\u30b9\u30c8\u306e\u5b8c\u6210\u3067\u3059\u3002<\/p>\n\u90e8\u5206\u90e8\u5206\u3092\u5207\u308a\u53d6\u3063\u305f\u30bd\u30fc\u30b9\u3067\u898b\u3065\u3089\u304b\u3063\u305f\u3068\u601d\u3044\u307e\u3059\u306e\u3067\u3001\u5168\u30bd\u30fc\u30b9\u3092\u4ee5\u4e0b\u306b\u8cbc\u308a\u4ed8\u3051\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n[bash]<\/p>\n<\/div>\n
\u3067\u3001handelClick\u30e1\u30bd\u30c3\u30c9\u5185\u306e\u8a18\u8ff0\u3092\u898b\u3066\u307f\u308b\u3068<\/p>\n
[bash]\n handleClick(event){\n this.props.onDelete(this.props.data.id);\n }\n[\/bash]<\/p>\n
\u3068\u306a\u3063\u3066\u3044\u3066\u3001ToDo\u30ea\u30b9\u30c8\u306edatas\u3000\u3092\u524a\u9664\u3057\u3066\u3044\u307e\u305b\u3093\u306d\u3002\n\u306a\u305c\u304b\u3068\u3044\u3046\u3068\u3001\u4eca\u56de\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u306f\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9ToDoList\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3057\u3066\u3044\u308b\u304b\u3089\u30fb\u30fb\n\u305d\u306e\u5909\u6570\u3092\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u3001\u524a\u9664\u3067\u304d\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n
\u3067\u306f\u3001\u3069\u3046\u3059\u308b\u304b\u30fb\u30fb\u30fb<\/p>\n
[bash]\nthis.props.onDelete(this.props.data.id);\n[\/bash] <\/p>\n
\u3053\u308c\u306f\u3001\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b onDelete\u3068\u3044\u3046\u306e\u3092\u4f5c\u308b\u3068\u3044\u3046\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\n\u305d\u3057\u3066\u305d\u308c\u306f\u5909\u6570\u3092\u7ba1\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u306f\u306a\u304f\u3066\u3001\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3060\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\n\u96e3\u3057\u3044\u3067\u3059\u306d\u3002\u304b\u306a\u308a\u9811\u5f35\u3063\u3066\u7406\u89e3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
DataLine\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u30a4\u30d9\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3042\u308b\u3002\n\u3067\u30fb\u30fb\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u3092DataLine\u30af\u30e9\u30b9\u3088\u308a\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u3067\u51e6\u7406\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308b\u304b\u3068\u3044\u3046\u3068\nDataLine\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u90e8\u5206\u306b\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3068\u3057\u3066\u3001\u4e0a\u4f4d\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002\n\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u5177\u4f53\u7684\u306b\u306f<\/p>\n
[bash]\nclass \u4e0a\u4f4d\u30af\u30e9\u30b9 extends React.Component{<\/p>\n
handleDelete(id){\n \u30b9\u30c6\u30fc\u30c8\u3092\u306a\u3093\u3068\u304b\u524a\u9664\u3057\u3088\u3046\u3068\u52aa\u529b\u3059\u308b\u3002\n }<\/p>\n
render(){<\/p>\n
}\n}\n[\/bash]<\/p>\n
\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002\n\u3067\u3001\u4eca\u56de\u306e\u4f8b\u3067\u8a00\u3046\u3068\u3001DataLine\u306e\uff11\u3064\u4e0a\u4f4d\u306e\u30af\u30e9\u30b9\u306f DataList\u30af\u30e9\u30b9\u306a\u306e\u3067\u30fb\u30fb\u30fb\n\u30c7\u30fc\u30bf\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u5909\u6570\u3092\u53c2\u7167\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n
\u51fa\u6765\u306a\u3044\uff1f\uff1f\uff1f\uff1f<\/p>\n
\u3068\u601d\u3046\u65b9\u3082\u3044\u3089\u3063\u3057\u3083\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\nDataList\u306f\u30c7\u30fc\u30bf\u306e\u4e00\u89a7\u3092\u51fa\u529b\u3057\u3066\u308b\u3093\u3060\u304b\u3089\u3001\u5909\u6570\u306e\u5024\u3092\u524a\u9664\u3067\u304d\u308b\u3058\u3083\u3093\u3002\n\u305d\u3046\u601d\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002<\/p>\n
\u3067\u3082 ReactJS\u306e\u9244\u5247<\/p>\n
DataList\u306f\u6700\u4e0a\u4f4d\u3058\u3083\u3042\u308a\u307e\u305b\u3093\u306d\u3002\u3064\u307e\u308a\u30b9\u30c6\u30fc\u30c8\u3092\u7ba1\u7406\u3057\u3066\u3044\u306a\u3044\u3002\n\u306a\u306e\u3067\u3001\u524a\u9664\u3057\u3088\u3046\u306b\u3082\u524a\u9664\u3067\u304d\u307e\u305b\u3093\u3002\n\u4e00\u89a7\u30c7\u30fc\u30bf\u306f\u30b9\u30c6\u30fc\u30c8(state)\u3067\u306f\u306a\u304f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3(props)\u3067\u53c2\u7167\u3067\u304d\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n
\u3058\u3083\u3042\u56f0\u3063\u305f\u30fb\u30fb\u30fb\u3000\u3069\u3046\u3059\u308a\u3083\u3044\u3044\u3093\u3060\u3068\u306a\u308a\u307e\u3059\u304c\u30fb\u30fb\u30fb<\/p>\n
\u3067\u3001\u4f1d\u3048\u308b\u65b9\u6cd5\u3067\u3059\u304c\u3001\u3053\u308c\u306fDataLine\u30af\u30e9\u30b9\u306e onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u540c\u3058\u3067\u3001\nDataList\u30af\u30e9\u30b9\u306b\u3082 onDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f5c\u308a\u3001\u305d\u3053\u3092\u7d4c\u7531\u3057\u3066\u3001\u6700\u4e0a\u4f4d\u306e\nToDoList\u30af\u30e9\u30b9\u306b\u60c5\u5831\u3092\u4f1d\u3048\u308a\u3083\u3044\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u3067\u306f\u3001\u5148\u307b\u3069\u306e\u90e8\u5206\u3092\u66f8\u304d\u63db\u3048\u3066\u307f\u307e\u3059\u3002<\/p>\n
handleDelete(id){\n \/\/\u30b9\u30c6\u30fc\u30c8\u3092\u76f4\u63a5\u524a\u9664\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u4e0a\u4f4d\u306b\u4f1d\u3048\u308b\u3002\n this.props.onDelete(id);\n }<\/p>\n
\u3067\u3001DataList\u30af\u30e9\u30b9\u306e\u4e0a\u4f4d\u30af\u30e9\u30b9\u306f ToDoList\u30af\u30e9\u30b9\u306a\u306e\u3067\u3001\nToDoList\u30af\u30e9\u30b9\u306e render\u30e1\u30bd\u30c3\u30c9\u3067 DataList\u30af\u30e9\u30b9\u3092\u30ec\u30f3\u30c0\u30fc\u3059\u308b\u969b\u306b\nonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5024\u3092 ToDoList\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9\u3078\u8ee2\u9001\u3057\u3066\u3084\u308c\u3070\u826f\u3044\u3002<\/p>\n
\u5177\u4f53\u7684\u306b\u306f\u3001<\/p>\n
[bash]\n class ToDoList extends React.Component{<\/p>\n
handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n
this.setState({datas: newDatas});<\/p>\n
}<\/p>\n
\u3053\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u3066\u3084\u308a\u307e\u3059\u3002\n\u306a\u306b\u3092\u3057\u3066\u3044\u308b\u304b\u3068\u3044\u3046\u3068\u3001\u3000DataList\u30af\u30e9\u30b9\u5185\u3067\u8d77\u3053\u3063\u305f\u3000onDelete\u30a4\u30d9\u30f3\u30c8\u306f\n\u81ea\u5206\u306e\u30af\u30e9\u30b9\u5185\u306e\u30e1\u30bd\u30c3\u30c9 handleOnDelete\u3067\u51e6\u7406\u3059\u308b\u3088\u3002\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n
ToDoList\u30af\u30e9\u30b9\u306ehandleOnDelete\u3067\u306f\u3001\u3088\u3046\u3084\u304f ToDo\u4e00\u89a7\u306e\u30b9\u30c6\u30fc\u30c8\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\n\u3067\u304d\u308b\u306e\u3067\u3001\u3044\u3088\u3044\u3088\u3053\u3053\u3067\u30b9\u30c6\u30fc\u30c8\u306e\u5024\u3092\u5909\u5316\u3055\u305b\u307e\u3059\u3002<\/p>\n
handleOnDelete\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3092\u898b\u3066\u3044\u305f\u3060\u304f\u3068\u30fb\u30fb\u30fb\nstate.datas\u3000\u3092\u30eb\u30fc\u30d7\u3055\u305b\u306a\u304c\u3089\u3001\u305d\u306e\u30c7\u30fc\u30bf\u306eid\u304c\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3063\u3066\u304d\u305f\u3002\n\u524a\u9664\u5bfe\u8c61ID\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3001\u5bfe\u8c61\u5916\u306a\u3089\u65b0\u305f\u306a\u914d\u5217\u5909\u6570\u306bpush\u3059\u308b\u3002<\/p>\n
\u305d\u3057\u3066\u3001\u5168\u30c7\u30fc\u30bf\u306e\u30eb\u30fc\u30d7\u304c\u7d42\u308f\u3063\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067<\/p>\n
[bash]\n this.setState({datas: newDatas});\n[\/bash]<\/p>\n
\u3068\u3057\u3066\u3001\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u66f4\u3092ReactJS\u306b\u901a\u77e5\u3057\u3066\u3044\u307e\u3059\u3002\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u7406\u89e3\u3067\u304d\u307e\u3057\u305f\u304b\uff1f\uff1f<\/p>\n
\u3067\u306f\u6b21\u884c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002\n\u3044\u3088\u3044\u3088ToDo\u306e\u8ffd\u52a0\u3067\u3059\u3002<\/p>\n
\u8ffd\u52a0\u306f NewToDo\u30af\u30e9\u30b9\u3067\u884c\u3044\u307e\u3059\u3002<\/p>\n
[bash]\n class NewToDo extends React.Component{\n constructor(props){\n super(props);\n }<\/p>\n
handleClick(){\n this.props.onAdd();\n }<\/p>\n
handleChange(event){\n var val = event.target.value;\n this.props.onContentChange(val);\n }<\/p>\n
\u3044\u304d\u306a\u308a\u30bd\u30fc\u30b9\u5168\u90e8\u8cbc\u308a\u4ed8\u3051\u305f\u306e\u3067 \u304e\u3087\u3063\u3068\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u30fb\u30fb\u30fb\n\u3053\u3053\u307e\u3067\u306e\u3053\u3068\u304c\u7406\u89e3\u3067\u304d\u3066\u3044\u305f\u3089\u306a\u3093\u3068\u304b\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u3002\n\u307e\u305a\u306f render\u30e1\u30bd\u30c3\u30c9\u304b\u3089\u8aac\u660e\u3002<\/p>\n
div\u30bf\u30b0\u306e\u4e2d\u306blabel\uff11\u3064\u3068\u3001input\uff11\u3064\u3068button\uff11\u3064\u3092\u30ec\u30f3\u30c0\u30fc\u3057\u3066\u307e\u3059\u3002\nlabel\u306f\u5358\u306a\u308b\u76ee\u5370\u306a\u306e\u3067\u8aac\u660e\u306f\u7701\u7565\u3059\u308b\u3068\u3057\u3066\u30fb\u30fb\u30fb<\/p>\n
input \u306fToDo\u306e\u4e2d\u8eab\u3092\u8a18\u8ff0\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u3067\u3059\u3002\nbutton \u306fToDo\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u30dc\u30bf\u30f3\u3067\u3059\u3002<\/p>\n
\u3067\u306f\u3001\u3053\u3053\u3067\u6539\u3081\u3066ToDoList\u5168\u4f53\u304c\u7ba1\u7406\u3059\u308b\u30b9\u30c6\u30fc\u30c8\u304c\u4f55\u3060\u3063\u305f\u304b\u601d\u3044\u51fa\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u305d\u3057\u3066\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf\u306f\u3059\u3079\u3066\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30af\u30e9\u30b9 ToDoList\u3067\u7ba1\u7406\u3055\u308c\u308b\u306e\u3067\u3057\u305f\u3002\n\u3064\u307e\u308aNewToDo\u30af\u30e9\u30b9\u306e input \u306b\u5165\u529b\u3055\u308c\u305f\u5024\u306f\u3001NewToDo\u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3059\u308b\u306e\u3067\u306f\u306a\u304f\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u7ba1\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\n\u305d\u3057\u3066\u3001NewToDo\u30af\u30e9\u30b9\u306ebutton\u30af\u30ea\u30c3\u30af\u3067ToDo\u30ea\u30b9\u30c8\u306b\u8ffd\u52a0\u3057\u305f\u3044\u304c\u3001\u3053\u308c\u3082\n\u4e0a\u4f4d\u306eToDoList\u30af\u30e9\u30b9\u306b\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u3053\u3068\u3092\u901a\u77e5\u3057\u3066\u3001\u51e6\u7406\u3092\u4efb\u305b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n
\u3053\u306e\u3053\u3068\u304c<\/p>\n
[bash]\n this.handleChange(e)}\/>\n this.handleClick()}>\n \u8ffd\u52a0\n <\/button>\n[\/bash]<\/p>\ninput\u3067\u306f onChange \u3064\u307e\u308a\u5024\u304c\uff11\u6587\u5b57\u3067\u3082\u5909\u5316\u3059\u308b\u305f\u3073\u306b\u3001\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002\n\u30dc\u30bf\u30f3\u306e\u30af\u30ea\u30c3\u30af\u306f click\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002<\/p>\n\u3053\u308c\u3060\u3051\u3067\u3059\u3002NewToDo\u30af\u30e9\u30b9\u306f\u81ea\u5206\u3067\u3059\u308b\u3053\u3068\u306f\u3001\u307b\u3068\u3093\u3069\u306a\u306b\u3082\u3042\u308a\u307e\u305b\u3093\u3002\n\u5909\u5316\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u304c\u3042\u3063\u305f\u3053\u3068\u3092\u89aa\u30af\u30e9\u30b9\u3078\u901a\u77e5\u3057\u3066\u3044\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n\u3067\u306f\u6700\u5f8c\u3001\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e ToDoList\u30af\u30e9\u30b9\u3092\u8997\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n[bash]\n class ToDoList extends React.Component{\n constructor(props){\n super(props);\n var maxId = 0;\n props.datas.forEach(function(data){\n if (data.id > maxId){\n maxId = data.id;\n }\n });<\/p>\n this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }<\/p>\n handleContentChange(ct){\n this.setState({content: ct});\n }<\/p>\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }<\/p>\n handleOnDelete(delid){\n var datas = this.state.datas.slice();\n var newDatas = [];\n datas.forEach(function(data){\n if (data.id != delid){\n newDatas.push(data);\n }\n });<\/p>\n this.setState({datas: newDatas});<\/p>\n }<\/p>\n render(){\n return (<\/p>\n\n this.handleOnAdd()}\n onContentChange={(ct) => this.handleContentChange(ct)}\n \/>\n this.handleOnDelete(id)}\/>\n <\/div>\n );\n }\n }\n[\/bash]<\/p>\n\u307e\u305a\u6ce8\u76ee\u3057\u3066\u3044\u305f\u3060\u304d\u305f\u3044\u306e\u306f render\u30e1\u30bd\u30c3\u30c9\u3002<\/p>\n\nNewToDo\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\nDataList\u30af\u30e9\u30b9\u306e\u30ec\u30f3\u30c0\u30fc<\/li>\n<\/ul>\nNewToDo\u30af\u30e9\u30b9\u306e onAdd\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnAdd\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002\nonContentChange\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleContentChange\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnDelete\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\nDataList\u30af\u30e9\u30b9\u306eonDelete\u306e\u65b9\u306f\u3059\u3067\u306b\u8aac\u660e\u6e08\u307f\u306a\u306e\u3067\u3001NewToDo\u30af\u30e9\u30b9\u306e\u65b9\u306e\u8aac\u660e\u3092\u3057\u307e\u3059\u3002<\/p>\n[bash]\n handleContentChange(ct){\n this.setState({content: ct});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e input\uff08\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\uff09\u3067\u8d77\u3053\u3063\u305f\u5024\u306e\u5909\u5316\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\nsetState\u30e1\u30bd\u30c3\u30c9\u3067 \u30b9\u30c6\u30fc\u30c8\u3092\u5909\u66f4\u3002<\/p>\n[bash]\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n this.setState({maxId: maxId, content: ”, datas: datas});\n }\n[\/bash]<\/p>\nNewToDo\u30af\u30e9\u30b9\u306e\u30dc\u30bf\u30f3\u30af\u30ea\u30c3\u30af\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\u3001\n\u6700\u5927\u5024\u3092\uff11\u52a0\u7b97\u3057\u3066\u3001ToDo\u30c7\u30fc\u30bf\u306e\u6700\u5f8c\u5c3e\u306b\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0(push)\u3002<\/p>\n\u305d\u3057\u3066\u3001setState\u3067\u3000maxId\u3068content\u3068datas \u306e\u5909\u66f4\u3092\u4f1d\u3048\nReactJS\u306b\u30ec\u30f3\u30c0\u30fc\u3092\u4f9d\u983c\u3057\u307e\u3059\u3002<\/p>\n\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u3088\u3046\u3084\u304fToDo\u30ea\u30b9\u30c8\u306e\u5b8c\u6210\u3067\u3059\u3002<\/p>\n\u90e8\u5206\u90e8\u5206\u3092\u5207\u308a\u53d6\u3063\u305f\u30bd\u30fc\u30b9\u3067\u898b\u3065\u3089\u304b\u3063\u305f\u3068\u601d\u3044\u307e\u3059\u306e\u3067\u3001\u5168\u30bd\u30fc\u30b9\u3092\u4ee5\u4e0b\u306b\u8cbc\u308a\u4ed8\u3051\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n[bash]<\/p>\n<\/div>\n
input\u3067\u306f onChange \u3064\u307e\u308a\u5024\u304c\uff11\u6587\u5b57\u3067\u3082\u5909\u5316\u3059\u308b\u305f\u3073\u306b\u3001\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002\n\u30dc\u30bf\u30f3\u306e\u30af\u30ea\u30c3\u30af\u306f click\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u89aa\u30af\u30e9\u30b9\u3067\u3042\u308bToDoList\u306b\n\u30a4\u30d9\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30c6\u30fc\u30c8\u306e\u5909\u5316\u3092\u4f1d\u3048\u3066\u3044\u308b\u3002<\/p>\n
\u3053\u308c\u3060\u3051\u3067\u3059\u3002NewToDo\u30af\u30e9\u30b9\u306f\u81ea\u5206\u3067\u3059\u308b\u3053\u3068\u306f\u3001\u307b\u3068\u3093\u3069\u306a\u306b\u3082\u3042\u308a\u307e\u305b\u3093\u3002\n\u5909\u5316\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u304c\u3042\u3063\u305f\u3053\u3068\u3092\u89aa\u30af\u30e9\u30b9\u3078\u901a\u77e5\u3057\u3066\u3044\u308b\u306e\u307f\u3067\u3059\u3002<\/p>\n
\u3067\u306f\u6700\u5f8c\u3001\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e ToDoList\u30af\u30e9\u30b9\u3092\u8997\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
this.state = {\n datas: props.datas,\n maxId: maxId,\n content: ”\n }\n }<\/p>\n
handleContentChange(ct){\n this.setState({content: ct});\n }<\/p>\n
handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n
this.setState({maxId: maxId, content: ”, datas: datas});\n }<\/p>\n
\u307e\u305a\u6ce8\u76ee\u3057\u3066\u3044\u305f\u3060\u304d\u305f\u3044\u306e\u306f render\u30e1\u30bd\u30c3\u30c9\u3002<\/p>\n
NewToDo\u30af\u30e9\u30b9\u306e onAdd\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnAdd\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002\nonContentChange\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleContentChange\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\n
DataList\u30af\u30e9\u30b9\u306eonDelete\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30d9\u30f3\u30c8\uff09\u306b\u81ea\u5206\u306e\u30af\u30e9\u30b9\u306e handleOnDelete\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u8ee2\u9001\u3092\u8a2d\u5b9a\u3002<\/p>\n
DataList\u30af\u30e9\u30b9\u306eonDelete\u306e\u65b9\u306f\u3059\u3067\u306b\u8aac\u660e\u6e08\u307f\u306a\u306e\u3067\u3001NewToDo\u30af\u30e9\u30b9\u306e\u65b9\u306e\u8aac\u660e\u3092\u3057\u307e\u3059\u3002<\/p>\n
[bash]\n handleContentChange(ct){\n this.setState({content: ct});\n }\n[\/bash]<\/p>\n
NewToDo\u30af\u30e9\u30b9\u306e input\uff08\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\uff09\u3067\u8d77\u3053\u3063\u305f\u5024\u306e\u5909\u5316\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\nsetState\u30e1\u30bd\u30c3\u30c9\u3067 \u30b9\u30c6\u30fc\u30c8\u3092\u5909\u66f4\u3002<\/p>\n
[bash]\n handleOnAdd(){\n var maxId = this.state.maxId + 1;\n var datas = this.state.datas.slice();\n datas.push({id: maxId, content: this.state.content});<\/p>\n
this.setState({maxId: maxId, content: ”, datas: datas});\n }\n[\/bash]<\/p>\n
NewToDo\u30af\u30e9\u30b9\u306e\u30dc\u30bf\u30f3\u30af\u30ea\u30c3\u30af\u3092\u30a4\u30d9\u30f3\u30c8\u7d4c\u7531\u3067\u901a\u77e5\u3057\u3066\u3082\u3089\u3063\u3066\u3001\n\u6700\u5927\u5024\u3092\uff11\u52a0\u7b97\u3057\u3066\u3001ToDo\u30c7\u30fc\u30bf\u306e\u6700\u5f8c\u5c3e\u306b\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0(push)\u3002<\/p>\n
\u305d\u3057\u3066\u3001setState\u3067\u3000maxId\u3068content\u3068datas \u306e\u5909\u66f4\u3092\u4f1d\u3048\nReactJS\u306b\u30ec\u30f3\u30c0\u30fc\u3092\u4f9d\u983c\u3057\u307e\u3059\u3002<\/p>\n
\u9577\u304b\u3063\u305f\u3067\u3059\u306d\u3002\u3088\u3046\u3084\u304fToDo\u30ea\u30b9\u30c8\u306e\u5b8c\u6210\u3067\u3059\u3002<\/p>\n
\u90e8\u5206\u90e8\u5206\u3092\u5207\u308a\u53d6\u3063\u305f\u30bd\u30fc\u30b9\u3067\u898b\u3065\u3089\u304b\u3063\u305f\u3068\u601d\u3044\u307e\u3059\u306e\u3067\u3001\u5168\u30bd\u30fc\u30b9\u3092\u4ee5\u4e0b\u306b\u8cbc\u308a\u4ed8\u3051\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n
[bash]<\/p>\n
![\"todo1\"](\"http:\/\/lovelinux.mydns.jp\/wp-content\/uploads\/2017\/04\/todo1.png\")
<\/a><\/p>\n