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@@ -0,0 +1,56 @@
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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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+ /*
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+ * 单向数据流：只能从父组件传给子组件
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+ * props 只读 不可修改
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+ * 没有this 没有生命周期
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+ * */
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+ function Parent() {
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+ return (
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+ <div>
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+ <h1>你好</h1>
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+ <hr />
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+ <hr />
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+ <Child name='图图' age={3} header={<h2>我是子元素的头部</h2>} />
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+ </div>
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+ )
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+ }
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+ // function Child({ name, age, header }) {
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+ // return (
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+ // <div>
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+ // {header}
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+ // <p>我叫{name},今年{age}岁</p>
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+ // </div>
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+ // )
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+ // }
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+ function Child(props) {
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+ // props.age +
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+ console.log(props, '111')
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+ return (
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+ <div>
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+ {props.header}
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+ <p>我叫{props.name},今年{props.age}岁</p>
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+ </div>
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+ )
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+ }
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+ const element = <Parent />
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+ const container = document.getElementById("root");
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+ const root = ReactDOM.createRoot(container)
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+ root.render(element);
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+ </script>
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+</body>
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+
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+</html>
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zheng