引导转换导航栏到侧栏



我正在使用Bootstrap 3,我想创建一个侧边栏,就像出现在移动应用程序中,它们最初是隐藏的,从左到右单击。

下面的html使用bootstrap,创建了一个导航栏,在较小的设备上变成了一个可折叠的图标。单击图标后,菜单从上到下显示。bootstrap是否提供了改变转换方向的功能?请帮助,我是新的css和bootstrap

<nav class="navbar navbar-inverse">
  <div class="container-fluid">
      <div class="navbar-header pull-left">
	   <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#myNavbar">
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>                        
       </button>
    </div>
	<a class="navbar-brand" href="#">Demo</a>
    <div class="collapse navbar-collapse" id="myNavbar">
      <ul class="nav navbar-nav">
        <li class="active"><a href="#">Home</a></li>
        <li class="dropdown">
          <a class="dropdown-toggle" data-toggle="dropdown" href="#">City <span class="caret"></span></a>
          <ul class="dropdown-menu">
            <li><a href="#"></a></li>
            <li><a href="#">Pune</a></li>
            <li><a href="#">Hyderabad</a></li>
          </ul>
        </li>
        <li><a href="#">menu item</a></li>
        <li><a href="#"></a></li>
      </ul>
      <ul class="nav navbar-nav navbar-right">
        <li><a href="#"><span class="glyphicon glyphicon-user"></span> Sign Up</a></li>
        <li><a href="#"><span class="glyphicon glyphicon-log-in"></span> Login</a></li>
      </ul>
    </div>
  </div>
</nav>

Bootstrap内置了侧边栏菜单功能。

http://startbootstrap.com/template-overviews/simple-sidebar/

http://bootsnipp.com/snippets/featured/navigation-sidebar-with-toggle

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