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getElementsByTagName通过标签名获取元素对象集合

_阿瑶 2022-08-29 阅读 84

 

<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>index</title>
<style>
*{
font-family: 微软雅黑;
}
</style>
</head>
<body>
<h1>aaaaaaaaaaaaaaaaaaaaaaaaaaaa</h1>
<h1>aaaaaaaaaaaaaaaaaaaaaaaaaaaa</h1>
<h1>aaaaaaaaaaaaaaaaaaaaaaaaaaaa</h1>
<h1>aaaaaaaaaaaaaaaaaaaaaaaaaaaa</h1>
<h1>aaaaaaaaaaaaaaaaaaaaaaaaaaaa</h1>
<h1>aaaaaaaaaaaaaaaaaaaaaaaaaaaa</h1>
</body>
<script>
hidobjs=document.getElementsByTagName('h1');

for(i=0;i<hidobjs.length;i++){
hidobjs[i].style.background='#f0f';
}
</script>
</html>

 

 

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