Testaccount
/
1.Test


			
				
					
						
						
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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">
        // 函数组件 首字母要大写
        // 函数组件中 null undefined boolean Object 无法渲染
        // 渲染object 会报错
        function MyCom(){
            return (
                <div>
                    <h2>我是一个函数组件</h2>
                    {1234}
                    {"我是一个字符串"}
                    {[1,2,3,4,5]}
                    {null}
                    {undefined}
                    {true}
                    {false}
                    {/*
                        函数组件中不能渲染对象
                        {{"name":"张三"}}
                    */}
                </div>
            )
        }
        let element = <MyCom/>
        ReactDOM.createRoot(document.getElementById('root')).render(element)
    </script>
</body>
</html>