<!-- 引入 react 18.2 -->
<script src="https://lf3-cdn-tos.bytecdntp.com/cdn/expire-1-y/react/18.2.0/umd/react.development.min.js"></script>
<script src="https://lf9-cdn-tos.bytecdntp.com/cdn/expire-1-y/react-dom/18.2.0/umd/react-dom.development.min.js"></script>
<div id="app"></div>
控制台
格式化
支持Emmet，输入 p 后按 Tab键试试吧！
<head> ... </head>
<body>
</body>