App下载
实例代码( Tip: 登录后体验更佳 )
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>W3Cschool(w3cschool.cn)</title>
</head>
<body id="myid" class="mystyle">
<script>
var x=document.getElementsByTagName('body')[0];
document.write("Body CSS : " + x.className);
document.write("<br>");
document.write(": ");
document.write(document.getElementById('myid').className);
</script>
</body>
</html>
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运行结果