<title>Bootstrap3 下拉菜单（Dropdown）插件方法 - 迹忆客(jiyik.com)</title>
<link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<nav class="navbar navbar-default" role="navigation">
<div class="container-fluid">
<div class="navbar-header">
<a class="navbar-brand" href="#">迹忆客</a>
<ul class="nav navbar-nav">
<li class="active"><a href="#">iOS</a></li>
<li><a href="#">SVN</a></li>
<li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown">Java <b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a id="action-1" href="#">meter</a></li>
<li><a href="#">EJB</a></li>
<li><a href="#">Jasper Report</a></li>
<li class="divider"></li>
<li><a href="#">分离的链接</a></li>
<li class="divider"></li>
<li><a href="#">另一个分离的链接</a></li>
$(".dropdown-toggle").dropdown('toggle');