{"id":2192,"date":"2021-01-15T18:45:33","date_gmt":"2021-01-15T10:45:33","guid":{"rendered":"https:\/\/www.yumefx.com\/?p=2192"},"modified":"2021-03-10T12:19:35","modified_gmt":"2021-03-10T04:19:35","slug":"react%e5%85%a5%e9%97%a8%ef%bc%88%e4%b8%8a%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.yumefx.com\/?p=2192","title":{"rendered":"React\u5165\u95e8\uff08\u4e0a\uff09"},"content":{"rendered":"\n

\u524d\u8a00<\/h1>\n

\u5728\u4e09\u5927\u524d\u7aef\u6846\u67b6\u4e2d\uff0cGoogle\u5f00\u53d1\u7684Angular.js\u51fa\u73b0\u6700\u65e9\u4f46\u5e94\u7528\u8f83\u5c11\uff0c\u56fd\u4eba\u5f00\u53d1\u7684VUE\u5728\u56fd\u5185\u6700\u706b\uff0c\u4eca\u5929\u7684\u4e3b\u89d2\u5219\u662fFacebook\u5f00\u53d1\u7684React\u3002<\/p>\n

\u4f5c\u4e3a\u56fd\u5185\u5916\u6700\u6d41\u884c\u7684\u524d\u7aef\u6846\u67b6\uff0cReact\u6700\u65e9\u88abFacebook\u7528\u4e8e\u5f00\u53d1Instagram\uff0c\u57282013\u5e745\u6708\u5f00\u6e90\u3002<\/p>\n

React\u4f18\u70b9\u662f\uff0c\u8bbe\u8ba1\u601d\u60f3\u72ec\u7279\uff0c\u6027\u80fd\u51fa\u4f17\uff0c\u4ee3\u7801\u903b\u8f91\u7b80\u5355\u3002\u4e00\u5207\u4ee5JS\u6765\u5b9e\u73b0\uff0c\u4e0d\u4f7f\u7528\u6a21\u677f\uff0c\u64cd\u4f5c\u7684\u5bf9\u8c61\u662f\u865a\u62dfDOM\u3002<\/p>\n


\u865a\u62dfDOM<\/h1>\n

\u865a\u62dfDOM\u5b9e\u9645\u662fReact\u5c06DOM\u62bd\u8c61\u6210\u7684JS\u5bf9\u8c61\uff0c\u5e76\u53ef\u901a\u8fc7API\u6765\u64cd\u4f5cDOM\u3002<\/p>\n

\u4e5f\u5c31\u662f\u8bf4\uff0c\u5c06DOM\u4ee3\u7801\u5199\u5230JS\uff08script\u6807\u7b7e\uff09\u4e2d\uff0c\u800cReact\u8d1f\u8d23\u5c06DOM\u4ee3\u7801\u8fdb\u884c\u6e32\u67d3\uff0c\u5e76\u89e3\u6790\u751f\u6210\u4e00\u4e2a\u6a21\u62dfDOM\u5d4c\u5957\u5173\u7cfb\u7684\u865a\u62dfDOM\u6811\u5bf9\u8c61\u3002<\/p>\n

\u518d\u901a\u8fc7diff\u7b97\u6cd5\uff0c\u5728\u4fee\u6539\u65f6\u9010\u5c42\u6b21\u7684\u8fdb\u884c\u8282\u70b9\u7684\u6bd4\u8f83\uff0c\u4f18\u5148\u4fee\u6539\u6e32\u67d3\u865a\u62dfDOM\uff0c\u5bf9\u9875\u9762\u4e0a\u771f\u6b63\u53d1\u751f\u53d8\u5316\u7684\u90e8\u5206\u8fdb\u884c\u5b9e\u9645DOM\u64cd\u4f5c\uff0c\u51cf\u5c11\u771f\u5b9eDOM\u7684\u64cd\u4f5c\uff0c\u5b9e\u73b0\u9875\u9762\u5143\u7d20\u7684\u9ad8\u6548\u66f4\u65b0\u3002<\/p>\n

 <\/h1>\n

\u5b89\u88c5<\/h1>\n

\u76f4\u63a5\u901a\u8fc7npm\u5b89\u88c5\u3002<\/p>\n\n\n\n

npm i react<\/span>\nnpm i react-dom<\/span>\nnpm i babel-standalone<\/span>\n<\/pre>\n\n\n\n
\u57fa\u7840\u4f7f\u7528<\/h1>\n
\u9996\u5148\u9700\u8981\u5f15\u5165react\u7684js\u5e93<\/p>\n\n\n\n
<!-- react\u6838\u5fc3\u6587\u4ef6 --><\/span>\n<script src=\"react.js\"><\/script><\/span>\n<\/span>\n<!-- \u6e32\u67d3\u9875\u9762\u4e2d\u7684DOM --><\/span>\n<script src=\"react-dom.js\"><\/script><\/span>\n<\/span>\n<!-- \u5c06 ES6 \u4ee3\u7801\u8f6c\u4e3a ES5 \u4ee3\u7801\uff0c\u8fd9\u6837\u5c31\u80fd\u5728\u76ee\u524d\u4e0d\u652f\u6301 ES6 \u6d4f\u89c8\u5668\u4e0a\u6267\u884c React \u4ee3\u7801\uff0c\u5e76\u4e14Babel \u5185\u5d4c\u4e86\u5bf9 JSX \u7684\u652f\u6301\uff0c\u53ef\u4ee5\u5c06JSX\u8bed\u6cd5\u8f6c\u6362\u6210JavaScript --><\/span>\n<script src=\"babel.js\"><\/script><\/span>\n<\/pre>\n\n\n\n
\u7136\u540e\u9700\u8981\u521b\u5efaDOM\u6839\u8282\u70b9\uff0c\u6839\u8282\u70b9\u4e0b\u7684\u5185\u5bb9\u88abReact\u6240\u7ba1\u7406\uff0c\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684hello world\u793a\u4f8b\u3002<\/p>\n\n\n\n
<div id=\"app\">test<\/div><\/span>\n<\/span>\n<script type=\"text\/babel\"><\/span>\n    let myDom = <h1>hello react<\/h1><\/span>\n    ReactDOM.render(myDom, document.getElementById(\"app\"))<\/span>\n<\/script><\/span>\n<\/pre>\n\n\n\n
 <\/h1>\n
JSX\u8bed\u6cd5<\/h1>\n
\u4e0a\u9762\u4ee3\u7801\u4e2d\u7ed9myDom\u8d4b\u503c\u7684\u8bed\u6cd5\u5c31\u662fJSX\uff0c\u5168\u79f0\u4e3aJavaScript XML\uff0c\u662fJavaScript\u7684\u6269\u5c55\u8bed\u6cd5\u3002<\/p>\n
\u4f18\u70b9\u662f\u6267\u884c\u6548\u7387\u66f4\u9ad8\u3001\u7c7b\u578b\u5b89\u88c5\uff0c\u7f16\u8bd1\u8fc7\u7a0b\u4e2d\u5c31\u80fd\u53ca\u65f6\u53d1\u73b0\u9519\u8bef\u3001\u7f16\u5199\u6a21\u677f\u66f4\u52a0\u7b80\u5355\u548c\u5feb\u901f\u3002<\/p>\n
\u9700\u8981\u6ce8\u610f\u7684\u662f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n
 <\/h3>\n
1.\u5fc5\u987b\u4e25\u683c\u6309\u7167W3C\u89c4\u8303\u4e66\u5199<\/h3>\n
\u4f8b\u5982`<input>`\u7b49\u81ea\u95ed\u5408\u6807\u7b7e\u5fc5\u987b\u5199\u7ed3\u675f\u6807\u7b7e\u5426\u5219\u4f1a\u62a5\u9519\u3002<\/p>\n\n\n\n
let myDom = <input type=\"button\" value=\"\"><\/input><\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
2.JSX\u7684\u6ce8\u91ca\u65b9\u5f0f\u4e0ehtml\u548cJS\u90fd\u4e0d\u540c<\/h3>\n\n\n\n
let myDom = <div><\/span>\n    {\/* \u6ce8\u91ca *\/}<\/span>\n    <h1>myDom<\/h1><\/span>\n<\/div><\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
3.\u4e0d\u652f\u6301\u591a\u884c\u6807\u7b7e<\/h3>\n
\u5982\u679c\u6709\u591a\u884c\u5fc5\u987b\u6709\u7236\u6807\u7b7e\u5305\u88f9\uff0c\u5e76\u4e14\u6700\u597d\u7528\u62ec\u53f7\u5305\u88f9\u8d77\u6765\u3002<\/p>\n\n\n\n
let myDom = (<div><\/span>\n    <input type=\"button\" value=\"\"><\/input><\/span>\n    <input type=\"button\" value=\"\"><\/input><\/span>\n<\/div>)<\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
4.\u8d4b\u53d8\u91cf\u3001\u8ba1\u7b97\u3001\u8c03\u7528\u51fd\u6570\u7b49\u65f6\u540c\u6837\u9700\u8981\u7528\u5927\u62ec\u53f7\u5305\u88f9<\/h3>\n\n\n\n
let text = \"hello react\"<\/span>\nlet count = 100<\/span>\nlet user = {<\/span>\n    name: \"zhangsan\",<\/span>\n    age: 18<\/span>\n}<\/span>\nfunction aboutUser(userObj){<\/span>\n    return \"name is \" + userObj.name + \",age is \" + userObj.age<\/span>\n}<\/span>\n<\/span>\nlet myDom1 = <div>{text}<\/div><\/span>\nlet myDom2 = <div>{count+1}<\/div><\/span>\nlet myDom3 = <h1>{aboutUser(user)}<\/h1><\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
5.\u4f7f\u7528 className\u6765\u66ff\u4ee3class<\/h3>\n
\u7531\u4e8eclass\u662fJavaScript\u7684\u5173\u952e\u5b57\uff0c\u56e0\u6b64\u5728JSX\u4e2d\u9700\u8981\u4f7f\u7528className\u6765\u8bbe\u7f6e\u7c7b\u540d\u3002<\/p>\n\n\n\n
let myDom = <div className=\"box\"><\/div><\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
6.\u8bbe\u7f6e\u6837\u5f0f<\/h3>\n\n\n\n
\nlet myDom = <h1 style={{color:\"red\"}}>testStyle<\/h1><\/span>\n<\/pre>\n\n\n\n
 <\/h1>\n
React\u5143\u7d20\u4e0e\u7ec4\u4ef6<\/h1>\n
React\u5143\u7d20\u662f\u6784\u6210React\u5e94\u7528\u7684\u6700\u5c0f\u90e8\u4ef6\uff0c\u4f8b\u5982\u524d\u9762hello world\u5b9e\u4f8b\u4e2d\u7684<h1>hello react<\/h1><\/code>\uff0c\u4e0e\u6d4f\u89c8\u5668\u4e2d\u7684DOM\u5143\u7d20\u4e0d\u540c\uff0cReact\u5143\u7d20\u662f\u521b\u5efa\u5f00\u9500\u6781\u5c0f\u7684\u5bf9\u8c61\uff0c\u5f53React\u5143\u7d20\u53d8\u5316\u540e\uff0cReactDOM\u4f1a\u81ea\u52a8\u53bb\u66f4\u65b0\u771f\u5b9eDOM\u3002<\/p>\n
React\u5143\u7d20\u662f\u4e0d\u53ef\u53d8\u5bf9\u8c61\uff0c\u4e00\u65e6\u88ab\u521b\u5efa\u5c31\u4e0d\u80fd\u518d\u66f4\u6539\u5b83\u7684\u5b50\u5143\u7d20\u6216\u8005\u5c5e\u6027\uff0c\u66f4\u65b0\u5b83\u7684\u552f\u4e00\u65b9\u5f0f\u662f\u521b\u5efa\u4e00\u4e2a\u5168\u65b0\u7684\u5143\u7d20\uff0c\u5e76\u5c06\u5176\u4f20\u5165ReactDOM.render()\u3002React\u5143\u7d20\u4ee3\u8868\u4e86\u67d0\u4e2a\u7279\u5b9a\u65f6\u523b\u7684DOM\u5143\u7d20\u72b6\u6001\u3002<\/p>\n
\u800cReact\u7ec4\u4ef6\uff08component\uff09\u6982\u5ff5\u4e0a\u7c7b\u4f3c\u4e8eJavaScript\u51fd\u6570\uff0c\u5c06React\u5143\u7d20\u7ec4\u6210\u4e00\u4e2a\u6709\u7279\u5b9a\u529f\u80fd\u3001\u72ec\u7acb\u53ef\u590d\u7528\u7684\u90e8\u4ef6\uff0c\u80fd\u63a5\u53d7\u4efb\u610f\u7684\u5165\u53c2\uff08props\uff09\uff0c\u6709\u81ea\u5df1\u7684\u72b6\u6001\uff08state\uff09\u548c\u751f\u547d\u5468\u671f\uff0c\u5e76\u8fd4\u56de\u7528\u4e8e\u63cf\u8ff0\u9875\u9762UI\u7684JSX\u4ee3\u7801\u7247\u6bb5\u3002<\/p>\n
\u5f53\u5e94\u7528\u7684UI\u90fd\u662f\u4f7f\u7528\u7ec4\u4ef6\u5b8c\u6210\u65f6\uff0c\u5c31\u662f\u4e00\u4e2a\u7ec4\u4ef6\u5316\u7684\u5e94\u7528\uff0c\u80fd\u591f\u5b9e\u73b0\u9875\u9762\u5c40\u90e8\u529f\u80fd\u7684\u4ee3\u7801\u96c6\u5408\uff0c\u7b80\u5316\u9875\u9762\u590d\u6742\u7a0b\u5ea6\uff0c\u63d0\u9ad8\u8fd0\u884c\u6548\u7387\uff0c\u964d\u4f4e\u7ef4\u62a4\u96be\u5ea6\u3002<\/p>\n
 <\/h3>\n
\u51fd\u6570\u7ec4\u4ef6<\/h3>\n\n\n\n
function Welcome(props){<\/span>\n    return <h1>Hello,{props.name}<\/h1><\/span>\n}<\/span>\n<\/span>\nvar obj = {name:\"zhangsan\"};<\/span>\nlet myDom = Welcome(obj);<\/span>\n<\/span>\n\/\/ \u6216\u8005\u5199\u6210\u4ee5\u4e0b\u5f62\u5f0f<\/span>\nlet myDom = <Welcome {...obj} \/>;<\/span>\n<\/span>\n\/\/ React\u4f1a\u5c06JSX\u6240\u63a5\u6536\u7684\u5c5e\u6027\uff08attributes\uff09\u4ee5\u53ca\u5b50\u7ec4\u4ef6\uff08children\uff09\u8f6c\u6362\u6210\u5355\u4e2a\u5bf9\u8c61\uff08props\uff09\u4f20\u9012\u7ed9\u7ec4\u4ef6<\/span>\nlet myDom = <Welcome name=\"zhangsan\" \/>;<\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
class\u7ec4\u4ef6<\/h3>\n\n\n\n
class Welcome extends React.Component {<\/span>\n    render() {<\/span>\n        return <h1>hello,{this.props.name}<\/h1>;<\/span>\n    }<\/span>\n}<\/span>\n<\/span>\nlet myDom = <Welcome name=\"zhangsan\" \/><\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
\u8bbe\u7f6e\u9ed8\u8ba4\u5165\u53c2<\/h3>\n
\u53ef\u4ee5\u901a\u8fc7defaultProps\u8bbe\u7f6e\u7ec4\u4ef6\u7684\u9ed8\u8ba4\u53c2\u6570\uff0c\u5f53\u4f20\u5165\u53c2\u6570\u7f3a\u5931\u65f6\u81ea\u52a8\u8c03\u7528\u9ed8\u8ba4\u53c2\u6570\u3002<\/p>\n\n\n\n
function Welcome(props){<\/span>\n    return <h1>Hello,{props.name}<\/h1><\/span>\n}<\/span>\n<\/span>\nWelcome.defaultProps = {name:\"zhangsan\"};<\/span>\n<\/span>\n\/\/\u9ed8\u8ba4\u53c2\u6570\u4e0d\u9002\u7528\u4e8eWelcome()\u5f62\u5f0f<\/span>\nlet myDom = <Welcome \/>;<\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
\u6ce8\u610f<\/h3>\n
1.\u7ec4\u4ef6\u540d\u79f0\u5fc5\u987b\u4ee5\u5927\u5199\u5b57\u6bcd\u5f00\u5934\uff0c\u5c0f\u5199\u5b57\u6bcd\u5f00\u5934\u7684\u6807\u7b7e\u4f1a\u88ab\u89c6\u4e3a\u539f\u751fDOM\u6807\u7b7e\u3002<\/p>\n
2.\u4f20\u5165\u7684props\u53c2\u6570\u4e3a\u53ea\u8bfb\uff0c\u4e0d\u80fd\u8fdb\u884c\u4fee\u6539\uff0c\u5982\u679c\u9700\u8981React\u7ec4\u4ef6\u968f\u7528\u6237\u64cd\u4f5c\u3001\u7f51\u7edc\u54cd\u5e94\u6216\u5176\u4ed6\u53d8\u5316\u800c\u52a8\u6001\u66f4\u6539\u8f93\u51fa\u5185\u5bb9\uff0c\u90a3\u4e48\u53ef\u4ee5\u901a\u8fc7\u4e0b\u9762\u7684\u72b6\u6001\uff08state\uff09\u5b9e\u73b0\u3002<\/p>\n
 <\/h1>\n
React\u7ec4\u4ef6\u7684\u72b6\u6001\u4e0e\u751f\u547d\u5468\u671f<\/h1>\n
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u6bcf\u79d2\u949f\u5237\u65b0\u4e00\u6b21\u7684\u65f6\u949f\u7ec4\u4ef6\uff0c\u901a\u8fc7\u8ba1\u65f6\u5668\u6bcf\u79d2\u949f\u83b7\u53d6\u4e00\u6b21\u65f6\u95f4\u5e76\u91cd\u65b0\u6e32\u67d3\u7ec4\u4ef6\u3002<\/p>\n\n\n\n
class Clock extends React.Component {<\/span>\n    render(){<\/span>\n        return (<\/span>\n            <div><\/span>\n                <h1>Hello,react!<\/h1><\/span>\n                <h2>It is {this.props.date.toLocaleTimeString()}.<\/h2><\/span>\n            <\/div><\/span>\n        )<\/span>\n    }<\/span>\n}<\/span>\n<\/span>\nfunction tick() {<\/span>\n    ReactDOM.render(<\/span>\n        <Clock date={new Date()} \/>,<\/span>\n        document.getElementById(\"app\")<\/span>\n    )<\/span>\n}<\/span>\n<\/span>\nsetInterval(tick,1000)<\/span>\n<\/pre>\n\n\n\n
\u8fd9\u6837\u663e\u7136\u662f\u5f88\u8822\u7684\u5b9e\u73b0\u65b9\u5f0f\uff0c\u7406\u60f3\u7684\u60c5\u51b5\u4e0b\u5e94\u8be5\u80fd\u591f\u8ba9\u65f6\u949f\u7ec4\u4ef6\u81ea\u6211\u66f4\u65b0\uff0c\u4e0b\u9762\u4ee3\u7801\u5c31\u662f\u5229\u7528state\uff08\u72b6\u6001\uff09\u5b9e\u73b0\u7684\u65f6\u949f\u7ec4\u4ef6\u3002<\/p>\n
state\u4e0eprops\u7c7b\u4f3c\uff0c\u4f46state\u662f\u79c1\u6709\u7684\uff0c\u5e76\u4e14\u5b8c\u5168\u53d7\u63a7\u4e8e\u5f53\u524d\u7ec4\u4ef6\u3002<\/p>\n\n\n\n
class Clock extends React.Component {<\/span>\n    \/\/ \u6784\u9020\u51fd\u6570\uff0c\u521d\u59cb\u5316state<\/span>\n    constructor(props) {<\/span>\n        super(props);<\/span>\n        this.state = {date:new Date()};<\/span>\n    }<\/span>\n<\/span>\n    \/\/ \u6302\u8f7d\uff08mount\uff09\u51fd\u6570\uff0c\u5f53\u7ec4\u4ef6\u7b2c\u4e00\u6b21\u88ab\u6e32\u67d3\u5230DOM\uff08render()\uff09\u4e4b\u540e\u6267\u884c\uff0c\u8fd9\u91cc\u7528\u6765\u8bbe\u7f6e\u8ba1\u65f6\u5668\u3002<\/span>\n    componentDidMount() {<\/span>\n        this.timerID = setInterval(<\/span>\n            ()=> this.tick(),1000<\/span>\n        );<\/span>\n    }<\/span>\n<\/span>\n    \/\/ \u5378\u8f7d\uff08unmount\uff09\u51fd\u6570\uff0c\u5f53DOM\u4e2d\u7ec4\u4ef6\u88ab\u5220\u9664\u540e\u6267\u884c\uff0c\u7528\u4e8e\u5783\u573e\u56de\u6536\u7b49\u3002<\/span>\n    componentWillUnmount() {<\/span>\n        clearInterval(this.timerID)<\/span>\n    }<\/span>\n<\/span>\n    tick(){<\/span>\n        \/\/ \u66f4\u65b0state<\/span>\n        this.setState({<\/span>\n            date: new Date()<\/span>\n        })<\/span>\n    }<\/span>\n<\/span>\n    render(){<\/span>\n        return (<\/span>\n            <div><\/span>\n                <h1>Hello,react!<\/h1><\/span>\n                <h2>It is {this.state.date.toLocaleTimeString()}.<\/h2><\/span>\n            <\/div><\/span>\n        )<\/span>\n    }<\/span>\n}<\/span>\n<\/span>\nReactDOM.render(<Clock \/>,document.getElementById(\"app\"))<\/span>\n<\/pre>\n\n\n\n
\u5176\u4e2d\uff0ccomponentDidMount()\uff08\u6302\u8f7d\u51fd\u6570\uff09\u548ccomponentWillUnmount()\uff08\u5378\u8f7d\u51fd\u6570\uff09\u5c31\u88ab\u79f0\u4e3a\u751f\u547d\u5468\u671f\u51fd\u6570\u3002<\/p>\n
 <\/h3>\n
\u6ce8\u610f<\/h3>\n
1.\u53ef\u4ee5\u7ed9state\u8d4b\u503c\u7684\u5730\u65b9\u53ea\u6709\u6784\u9020\u51fd\u6570\u4e2d\u3002<\/h5>\n
2.state\u4e0d\u80fd\u76f4\u63a5\u4fee\u6539\uff0c\u5e94\u8be5\u4f7f\u7528setState()\u65b9\u6cd5\u3002<\/h5>\n
\u8fd9\u6837React\u5c31\u4f1a\u77e5\u9053state\u5df2\u7ecf\u6539\u53d8\u4e86\uff0c\u81ea\u52a8\u8c03\u7528render()\u65b9\u6cd5\u6e32\u67d3\u66f4\u65b0\u540e\u7684\u7ec4\u4ef6\u3002<\/p>\n
3.state\u7684\u66f4\u65b0\u53ef\u80fd\u662f\u5f02\u6b65\u7684\u3002<\/h5>\n
\u539f\u56e0\u662f\u51fa\u4e8e\u6027\u80fd\u8003\u8651\uff0cReact\u53ef\u80fd\u4f1a\u628a\u591a\u4e2asetState()\u5408\u5e76\u6210\u4e00\u4e2a\u8c03\u7528\u3002<\/p>\n\n\n\n
\/\/\u9519\u8bef\u7528\u6cd5<\/span>\nthis.setState({<\/span>\n    counter: this.state.counter + this.props.increment<\/span>\n})<\/span>\n<\/span>\n\/\/\u6b63\u786e\u7528\u6cd5<\/span>\nthis.setState((state,props) => {<\/span>\n    counter: state.counter + props.increment<\/span>\n})<\/span>\n<\/pre>\n\n\n\n
4.\u6570\u636e\u662f\u5411\u4e0b\u6d41\u52a8\u7684\u3002<\/h5>\n
state\u662f\u79c1\u6709\u7684\uff0c\u4e0d\u80fd\u76f4\u63a5\u88ab\u7236\u7ec4\u4ef6\u6216\u5b50\u7ec4\u4ef6\u8bbf\u95ee\uff0c\u4f46\u53ef\u4ee5\u5c06state\u4f5c\u4e3aprops\u5411\u4e0b\u4f20\u9012\u5230\u5b50\u7ec4\u4ef6\u4e2d\u3002<\/p>\n\n\n\n
<FormattedDate date={this.state.date} \/><\/span>\n<\/pre>\n\n\n\n
 <\/h1>\n
\u4e8b\u4ef6\u5904\u7406<\/h1>\n
\u521b\u5efa\u4e8b\u4ef6<\/h3>\n
\u4e8b\u4ef6\u547d\u540d\u91c7\u7528\u5c0f\u9a7c\u5cf0\u5f0f\uff0c\u5e76\u4e14\u9700\u8981\u4f20\u5165\u51fd\u6570\u4f5c\u4e3a\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u3002<\/p>\n\n\n\n
\/\/ \u4f20\u7edfHTML<\/span>\n<button onclick=\"handleClick()\">testEvent<\/button><\/span>\n<\/span>\n\/\/React<\/span>\nlet myDom = <button onClick={handleClick}>testEvent<\/button><\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
\u963b\u6b62\u9ed8\u8ba4\u884c\u4e3a<\/h3>\n
\u4f20\u7edfHTML\u4e2d\u53ef\u4ee5\u901a\u8fc7\u8fd4\u56defalse\u7684\u65b9\u5f0f\u963b\u6b62\u9ed8\u8ba4\u884c\u4e3a\uff0c\u800cReact\u4e2d\u5fc5\u987b\u663e\u5f0f\u4f7f\u7528preventDefault\u3002<\/p>\n\n\n\n
\/\/\u4f20\u7edfHTML<\/span>\n<a href=\"#\" onclick=\"console.log('This link was clicked but refuse');return false\">click me<\/a><\/span>\n\/\/React<\/span>\nfunction ActionLink() {<\/span>\n    function handleClick(e) {<\/span>\n        e.preventDefault();<\/span>\n        console.log('This link was clicked but refuse');<\/span>\n    }<\/span>\n<\/span>\n    return (<\/span>\n        <a href=\"#\" onClick={handleClick}>click me<\/a><\/span>\n    )<\/span>\n}<\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
class\u7ec4\u4ef6\u7684\u4e8b\u4ef6\u5904\u7406\u51fd\u6570<\/h3>\n
\u4e0b\u9762\u7684\u4ee3\u7801\u662f\u4e00\u4e2a\u53ef\u4ee5\u8ba9\u7528\u6237\u5207\u6362\u5f00\u5173\u72b6\u6001\u7684\u6309\u94ae\u3002<\/p>\n\n\n\n
class Toggle extends React.Component {<\/span>\n    constructor(props) {<\/span>\n        super(props);<\/span>\n        this.state = {isToggleOn: true};<\/span>\n<\/span>\n        \/\/ \u4e3a\u4e86\u5728\u56de\u8c03\u4e2d\u4f7f\u7528 `this`\uff0c\u8fd9\u4e2a\u7ed1\u5b9a\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\uff0c\u5426\u5219\u56de\u8c03\u4e2d\u7684this\u4f1a\u662fundefined<\/span>\n        this.handleClick = this.handleClick.bind(this);<\/span>\n    }<\/span>\n<\/span>\n    handleClick() {<\/span>\n        this.setState(state =&gt; ({<\/span>\n            isToggleOn: !state.isToggleOn<\/span>\n        }));<\/span>\n    }<\/span>\n<\/span>\n    render() {<\/span>\n        return (<\/span>\n            &lt;button onClick={this.handleClick}&gt;<\/span>\n                {this.state.isToggleOn ? 'ON' : 'OFF'}<\/span>\n            &lt;\/button&gt;<\/span>\n        );<\/span>\n    }<\/span>\n}<\/span>\n<\/pre>\n\n\n\n
\u5982\u679c\u89c9\u5f97bind\u9ebb\u70e6\uff0c\u53ef\u4ee5\u4f7f\u7528class fields\u6b63\u786e\u7684\u7ed1\u5b9a\u56de\u8c03\u51fd\u6570\u3002<\/p>\n\n\n\n
class Toggle extends React.Component {<\/span>\n    constructor(props) {<\/span>\n        super(props);<\/span>\n        this.state = {isToggleOn: true};<\/span>\n    }<\/span>\n<\/span>\n    handleClick = () => {<\/span>\n        this.setState(state => ({<\/span>\n            isToggleOn: !state.isToggleOn<\/span>\n        }));<\/span>\n    }<\/span>\n<\/span>\n    render() {<\/span>\n        return (<\/span>\n            <button onClick={this.handleClick}><\/span>\n                {this.state.isToggleOn ? 'ON' : 'OFF'}<\/span>\n            <\/button><\/span>\n        );<\/span>\n    }<\/span>\n}<\/span>\n<\/pre>\n\n\n\n
 <\/h3>\n
\u5411\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u4e2d\u4f20\u9012\u53c2\u6570<\/h3>\n\n\n\n
\/\/\u7bad\u5934\u51fd\u6570\u65b9\u5f0f,e\u4e3aReact\u7684\u4e8b\u4ef6\u5bf9\u8c61<\/span>\nlet myDom = <button onClick={(e) => {handleClick(msg,e)}}>testEvent<\/button><\/span>\n<\/span>\n\/\/Function.prototype.bind\u65b9\u5f0f<\/span>\nlet myDom = <button onClick={this.handleClick.bind(this,msg)}>testEvent<\/button><\/span>\n<\/pre>\n\n\n\n\n\n
\n\n\n\n
\u56e0\u4e3a\u5bb3\u6015\u81ea\u5df1\u5e76\u975e\u660e\u73e0\u800c\u4e0d\u6562\u523b\u82e6\u7422\u78e8\uff0c<\/p>\n
\u53c8\u56e0\u4e3a\u6709\u51e0\u5206\u76f8\u4fe1\u81ea\u5df1\u662f\u660e\u73e0\uff0c<\/p>\n
\u800c\u4e0d\u80fd\u4e0e\u74e6\u783e\u788c\u788c\u4e3a\u4f0d\u3002<\/p>\n
\u300a\u5c71\u6708\u8bb0\u300b<\/p>\n
\u2014\u2014\u4e2d\u5c9b\u6566<\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\u524d\u8a00 \u5728\u4e09\u5927\u524d\u7aef\u6846\u67b6\u4e2d\uff0cGoogle\u5f00\u53d1\u7684Angular.js\u51fa\u73b0\u6700\u65e9\u4f46\u5e94\u7528\u8f83\u5c11\uff0c\u56fd\u4eba\u5f00\u53d1\u7684VUE\u5728\u56fd\u5185\u6700\u706b\uff0c […]<\/p>\n","protected":false},"author":1,"featured_media":2194,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18,4],"tags":[21,23,14,22],"_links":{"self":[{"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/posts\/2192"}],"collection":[{"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2192"}],"version-history":[{"count":0,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/posts\/2192\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/media\/2194"}],"wp:attachment":[{"href":"https:\/\/www.yumefx.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2192"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2192"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2192"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}