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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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+ let user = '图图';
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+ return (
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+ <div>
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+ <Child users={user} />
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+ </div>
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+ )
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+ }
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+ // 函数组件传参 props接收 可以进行操作
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+ // props是单向数据流 只读 不可修改
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+ // function Child(props) {
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+ // // props.users = '喜羊羊';
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+ // console.log(this)
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+ // return <h1>你好{props.users}</h1>
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+ // }
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+ class Child extends React.Component {
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+ render() {
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+ console.log(this)
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+ return (
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+ <h1>你好{this.props.users}</h1>
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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