<head>
<meta charset="UTF-8">
<title></title>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"/>
<meta name="viewport" content="width=device-width,
initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no" />
<link rel="stylesheet" href="bootstrap/css/bootstrap.css">
<script src="bootstrap/js/bootstrap.js"></script>
<script src="js/jquery.js"></script>
</head>
<div class="btn-group">
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdwon">
分类 <span class="caret"></span>
</button>
<ul class="dropdown-menu">
<li>少儿</li>
<li>计算机</li>
<li>社会文学</li>
</ul>
</div>
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/4594/viewspace-3158046/ ，如需转载，请注明出处，否则将追究法律责任。
