javascript - Twitter引导程序如何将下拉选择替换为菜单按钮

Question

当我将浏览器屏幕调整为移动设备大小时，桌面菜单被下拉菜单替换为多个选项：

但是如何使用这样的按钮将该下拉菜单更改为菜单：

通过单击“菜单”按钮菜单显示和隐藏

Answer 1

为了得到像上面这样的菜单，我们必须遵循这个标记

<div class="row-fluid">
<div class="navbar navbar-inverse">
  <div class="navbar-inner">
    <div class="container-fluid">
  <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
   <span class="icon-bar"></span>
   <span class="icon-bar"></span>
   <span class="icon-bar"></span>
  </a>
  <div class="nav-collapse collapse">
  <ul class="nav">
   <li class="active"><a href="#"><i class="icon-home icon-white"></i> Home</a></li>
   <li><a href="#">Features</a></li>
   <li><a href="">Pricing</a></li>
   <li class="dropdown">
    <a href="#" class="dropdown-toggle" data-toggle="dropdown">Products<b class="caret"></b></a>
    <ul class="dropdown-menu">
    <li><a href="#">Latest Products</a></li>
    <li><a href="#">Popular Products</a></li>
    </ul>
   </li>          
   <li class="dropdown">
    <a href="#" class="dropdown-toggle" data-toggle="dropdown">Membership<b class="caret"></b></a>
    <ul class="dropdown-menu">
      <li><a href="#">Personal Membership</a></li>
      <li><a href="#">Premium Membership</a></li>
    </ul>
   </li>
   <li><a href="#">Offers</a></li>
   <li><a href="#">Gallery</a></li>
   <li><a href="#">About Us</a></li>
   <li><a href="#">Contact</a></li>
   <li class="dropdown">
    <a class="dropdown-toggle" data-toggle="dropdown" href="#">Dropdown <b class="caret"></b></a>
    <ul class="dropdown-menu">
    <li><a href="#">Action</a></li>
    <li><a href="#">Another action</a></li>
    </ul>
   </li>
        </ul>
    </div><!-- /.nav-collapse -->
    </div><!-- /.container -->
  </div><!-- /.navbar-inner -->
</div><!-- /.navbar -->

演示