lovecoding
/
W250511


			
				
					
						
						
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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>
    <script src="./babel.min.js"></script>
    <script src="./react.development.js"></script>
    <script src="./react-dom.development.js"></script>
</head>

<body>
    <div id="root"></div>
    <script type="text/babel">
        let root = ReactDOM.createRoot(document.getElementById("root"));
        function App() {
            let user = '图图';
            return (
                <div>
                    <Child users={user} />
                </div>
            )
        }
        // 函数组件传参 props接收 可以进行操作 
        // props是单向数据流  只读 不可修改
        // function Child(props) {
        //     // props.users = '喜羊羊';
        //     console.log(this)
        //     return <h1>你好{props.users}</h1>
        // }
        class Child extends React.Component {
            render() {
                console.log(this)
                return (
                    <h1>你好{this.props.users}</h1>
                )
            }
        }
        root.render(<App/>);
    </script>
</body>

</html>