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+<!DOCTYPE html>
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+<html lang="en">
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+<head>
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+ <meta charset="UTF-8">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+ <!-- jsx 语法浏览器不识别 jsx => js 浏览器可识别的语言 -->
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+ <script src="./babel.min.js"></script>
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+ <!-- react的核心库 -->
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+ <script src="./react.development.js"></script>
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+ <!-- 解析react中的dom库 -->
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+ <script src="./react-dom.development.js"></script>
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+ <style>
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+ .box {
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+ color: red;
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+ }
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+ .flower {
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+ font-size: 30px;
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+ font-weight: bold;
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+ }
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+ .a {
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+ color: red;
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+ }
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+ .b {
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+ color: purple;
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+ }
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+ </style>
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+</head>
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+<body>
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+ <div id="root">
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+ </div>
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+ <script type="text/babel">
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+ {/*
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+ 样式绑定:
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+ 1.class => className:在样式表中定义
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+
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+ 2.style => 在jsx语法中直接定义
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+ */}
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+ let root = ReactDOM.createRoot(document.getElementById("root"));
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+ let element = <div>
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+ <div className={'box flower'}>哪吒闹海</div>
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+ <div className='box flower'>哪吒降生</div>
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+ </div>
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+ const vase = {
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+ color: 'blue',
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+ fontSize: '20px',
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+ fontWeight: 'bold'
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+ }
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+ element = <p style={vase}>熊出没</p>
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+ // 练习排版 案例图 群里
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+ const a1 = {
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+ color: 'pink'
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+ }
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+ const b1 = {
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+ color: 'green'
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+ }
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+ // element = <div className={5 > 2 ? 'a' : 'b'}>最终的</div>
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+ element = <div style={5 > 2 ? a1 : b1}>下一个</div>
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+ root.render(element)
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+ </script>
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+</body>
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+</html>
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