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+<!DOCTYPE html>
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+<html lang="en">
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+
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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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+ <script src="./babel.min.js"></script>
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+ <script src="./react.development.js"></script>
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+ <script src="./react-dom.development.js"></script>
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+ <!-- <link rel="stylesheet" href=""> -->
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+ <style>
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+ #tips {
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+ color: red;
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+ }
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+ .hi {
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+ color: purple;
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+ }
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+ </style>
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+</head>
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+
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+<body>
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+ <div id="root"></div>
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+ <script type="text/babel">
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+ let root = ReactDOM.createRoot(document.getElementById("root"));
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+ // 静态属性
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+ let element = <div id='tips'>hello</div>
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+ element = <img width='300' height='400' src="https://pic.rmb.bdstatic.com/bjh/bc1118b6d868/250616/4081c418b456da14b12e3d59d67188d5.jpeg" />
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+ element = (<table border='2'>
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+ <tr>
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+ {/* 使用camelCase绑定多单词属性 */}
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+ <td colSpan='2'>成绩</td>
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+ {/*<td>成绩</td> */}
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+ </tr>
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+ <tr>
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+ <td>90</td>
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+ <td>80</td>
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+ </tr>
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+ </table>)
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+ // class 属于js关键字 在React中不允许作为属性名使用
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+ // class => className
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+ element = <h1 className='hi'>大家好</h1>
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+
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+ element = (
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+ <div>
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+ <label htmlFor="username">姓名:</label>
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+ <input type="text" id='username' />
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+ </div>
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+ )
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+ root.render(element);
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+ </script>
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+</body>
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+
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+</html>
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zheng