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源代码:
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Bootstrap 实例 - 按钮上拉菜单</title> <link href="//cdn.staticfile.net/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> <script src="//cdn.staticfile.net/jquery/2.1.1/jquery.min.js"></script> <script src="//cdn.staticfile.net/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script> </head> <body> <div class="row" style="margin-left:50px; margin-top:200px"> <div class="btn-group dropup"> <button class="btn btn-default dropdown-toggle" data-toggle="dropdown" type="button">默认 <span class="caret"></span> </button> <ul class="dropdown-menu" role="menu"> <li><a href="#">功能</a></li> <li><a href="#">另一个功能</a></li> <li><a href="#">其他</a></li> <li class="divider"></li> <li><a href="#">分离的链接</a></li> </ul> </div> <div class="btn-group dropup"> <button class="btn btn-primary dropdown-toggle" data-toggle="dropdown" type="button">原始 <span class="caret"></span> </button> <ul class="dropdown-menu" role="menu"> <li><a href="#">功能</a></li> <li><a href="#">另一个功能</a></li> <li><a href="#">其他</a></li> <li class="divider"></li> <li><a href="#">分离的链接</a></li> </ul> </div> </div> </body> </html>
运行结果