lovecoding
/
web0715


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <!-- jsx 语法浏览器不识别 jsx => js 浏览器可识别的语言 -->
    <script src="./babel.min.js"></script>
    <!-- react的核心库 -->
    <script src="./react.development.js"></script>
    <!-- 解析react中的dom库 -->
    <script src="./react-dom.development.js"></script>
</head>
<body>
    <div id="root">
    </div>
    <script type="text/babel">
        let root = ReactDOM.createRoot(document.getElementById("root"));
        // 组件传参
        function App() {
            const user = '一休';
            return (
                <div>
                    {/*组件复用*/}
                    <Child name={user} />
                </div>
            )
        }
        // 函数组件：props 接收 才可以进行操作
        // props是单向数据流 只读 不可修改
        function Child(props) {
            console.log(props.name,'接受的值')
            // props.name = '喜羊羊'
            return <h1>Hello, {props.name}</h1>
        }
        // class Child extends React.Component{
        //     render() {
        //         console.log(this.props)
        //         return (
        //             <div>你好,{this.props.name}</div>
        //         )
        //     }
        // }
        root.render(<App/>)        
    </script>
</body>
</html>