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javascript - insertBefore到底有什么问题，没反应？？

结果不是期望的反应？？

<html>
<head>
<meta charset="utf-8">
<script src="text.js"></script>
</head>
<body>
<p>111</p>
<h1>hjg</h1>
<script >
pp=document.getElementsByTagName(p);
qq=document.getElementsByTagName(h1);
pp[0].parentNode.insertBefore(qq[0],pp[0]);
</script>
</body>
</html>
PHPzPHPz2902 days ago361

reply all(1)I'll reply

  • ringa_lee

    ringa_lee2017-04-10 16:57:15

    字符串是要用引号包裹的：

    pp=document.getElementsByTagName('p');
qq=document.getElementsByTagName('h1');

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