<!DOCTYPE?html>
<html?lang="en">
<head>
????<meta?charset="UTF-8">
????<title>Title</title>
</head>
<body>
????<div?class="one">
????????<div?class="two">
????????????<div?class="three">
????????????????<div?class="four"></div>
????????????</div>
????????</div>
????</div>
</body>
</html>
我如果想添加一個(gè)div class為為任意一層 怎么添加！用JS
19990000
2017-10-05 16:45:37
