lovecoding
/
VIP32


			
				
					
						
						
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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">
        const root = ReactDOM.createRoot(document.getElementById("root"));
        function App() {
            return (
                <div>
                    <List/>    
                </div>
            )
        }
        class List extends React.Component {
            constructor() {
                super();
                this.state = {
                    list: ['孙悟空','猪八戒','唐僧','沙和尚','白龙马']
                }
            }
            render() {
                // render 可处理所有的js逻辑
                let {list} = this.state;
                let aa = list.map((ele,index) => <li key={index}>{ele}</li> )
                // return 中只返回 渲染到页面上的内容
                return (
                    <div>
                        <ul>
                            {/*自动解析
                                <li>{list}</li>      
                            */}
                            {
                                /*
                                    <li>{{aaa:"aaaa"}}</li> 报错
                                */
                            }
                            {/*如何渲染数组：for/for in/for of/forEach/map/while/do..while */}
                            {aa}
                        </ul>    
                    </div>
                )
            }
        }
        root.render(<App/>)
    </script>
</body>
</html>