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@@ -0,0 +1,64 @@
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+<!DOCTYPE html>
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+<html lang="en">
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+
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+<head>
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+ <meta charset="UTF-8">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+ <script src="./babel.min.js"></script>
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+ <script src="./react.development.js"></script>
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+ <script src="./react-dom.development.js"></script>
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+</head>
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+
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+<body>
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+ <div id="root"></div>
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+ <script type="text/babel">
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+ let root = ReactDOM.createRoot(document.getElementById("root"));
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+ function App() {
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+ return (
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+ <Main />
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+ )
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+ }
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+ class Main extends React.Component {
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+ constructor(props) {
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+ super(props);
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+ this.state = {
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+ hi: '哈哈哈哈哈',
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+ aa: '小明'
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+ }
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+ console.log(this)
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+ this.handleHi = this.handleHi.bind(this);
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+ }
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+ handleHi() {
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+ console.log('hi', this)
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+ this.setState({
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+ hi: '哈哈'
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+ })
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+ }
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+ // handleHi=() =>{
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+ // console.log('hi',this)
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+ // this.setState({
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+ // hi:'哈哈'
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+ // })
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+ // }
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+ render() {
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+ console.log(this, 'this')
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+ return (
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+ <div>
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+ <h1>你好</h1>
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+ <h3 onClick={this.handleHi}>{this.state.hi}</h3>
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+ {/*<h3 onClick={this.handleHi.bind(this)}>{this.state.hi}</h3>*/}
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+ <h3 onClick={()=>{
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+ this.setState({
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+ aa:'12'
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+ })
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+ }}>{this.state.aa}</h3>
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+ </div>
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+ )
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+ }
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+ }
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+ root.render(<App />);
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+ </script>
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+</body>
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+
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+</html>
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zheng