有我的代码我似乎无法让引导下拉菜单工作，有什么帮助吗？我很确定我已经把所有的 js 和 css 都做好了，我已经找了一段时间了：o
<!-- BOOTSTRAP -->
<div class="navbar navbar-inverse" style="position: static;">
<div class="navbar-inner">
<div class="container">
<a class="btn btn-navbar" data-toggle="collapse" data-target=".subnav-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</a>
<a class="brand" href="#">Project Stalk</a>
<div class="nav-collapse subnav-collapse">
<ul class="nav">
<li class="active"><a href="#">Home</a></li>
<li><a href="#">About</a></li>
<li><a href="#">Contact</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Settings <b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="#">Account settings</a></li>
<li><a href="#">Privacy settings</a></li>
<li><a href="#">Logout</a></li>
<li class="divider"></li>
<li class="nav-header">Nav header</li>
<li><a href="#">Separated link</a></li>
<li><a href="#">One more separated link</a></li>
</ul>
</li>
</ul>
<form class="navbar-search pull-left" action="">
<input type="text" class="search-query span2" placeholder="Search">
</form>
<ul class="nav pull-right">
<li><a href="#">Link</a></li>
<li class="divider-vertical"></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li class="divider"></li>
<li><a href="#">Separated link</a></li>
</ul>
</li>
</ul>
</div><!-- /.nav-collapse -->
</div>
</div><!-- /navbar-inner -->
</div><!-- /navbar -->