Bootstrap每天必学之导航条(二)

<div class="navbar navbar-default">
 <!-- 导航条标题-->
 　<div class="navbar-header">
 　 <a href="##" class="navbar-brand">LOGO</a>
 　</div>
 <!-- 基础导航条-->
 <ul class="nav navbar-nav">
 <li><a href="##">网站首页</a></li>
 <!-- 二级菜单-->
 <li class="dropdown">
 <a href="##" data-toggle="dropdown" class="dropdown-toggle">系列教程<span class="caret"></span></a>
 <ul class="dropdown-menu">
 <li><a href="##">CSS3</a></li>
 <li><a href="##">JavaScript</a></li>
 <li class="disabled"><a href="##">PHP</a></li>
 </ul>
 </li>
 <li><a href="##">名师介绍</a></li>
 <li><a href="##">成功案例</a></li>
 <li><a href="##">关于我们</a></li>
 </ul>
 <!-- 搜索表单-->
 <form action="##" class="navbar-form navbar-left">
 <div class="form-group">
 <input type="text" class="form-control" placeholder="请输入关键词" />
 </div>
 <button type="submit" class="btn btn-default">搜索</button>
 </form>
</div>

 <!-- 导航条标题-->
 　<div class="navbar-header">
 　 <a href="##" class="navbar-brand">LOGO</a>
 　</div>

 <!-- 二级菜单-->
 <li class="dropdown">
 <a href="##" data-toggle="dropdown" class="dropdown-toggle">系列教程<span class="caret"></span></a>
 <ul class="dropdown-menu">
 <li><a href="##">CSS3</a></li>
 <li><a href="##">JavaScript</a></li>
 <li class="disabled"><a href="##">PHP</a></li>
 </ul>
 </li>

 <!-- 搜索表单-->
 <form action="##" class="navbar-form navbar-left">
 <div class="form-group">
 <input type="text" class="form-control" placeholder="请输入关键词" />
 </div>
 <button type="submit" class="btn btn-default">搜索</button>
 </form>

<div class="navbar navbar-inverse" role="navigation">
 <div class="navbar-header">
 <a href="##" class="navbar-brand">LOGO</a>
 </div>
 <ul class="nav navbar-nav">
 <li class="active"><a href="">首页</a></li>
 <li><a href="">教程</a></li>
 <li><a href="">关于我们</a></li>
 </ul>
</div>

<!--导航条固定在浏览器窗口顶部-->
<div class="navbar navbar-default navbar-fixed-top">
 　…
</div>
<!--导航条固定在浏览器窗口底部-->
<div class="navbar navbar-default navbar-fixed-bottom">
 　…
</div>

<div class="navbar navbar-default">
 <div class="navbar-header">
 　<!-- .navbar-toggle样式用于toggle收缩的内容，即nav-collapse collapse样式所在元素 -->
 <button class="navbar-toggle" type="button" data-toggle="collapse" data-target="#demo">
 <span class="sr-only">Toggle Navigation</span>
 <span class="icon-bar"></span>
 <span class="icon-bar"></span>
 <span class="icon-bar"></span>
 </button>
 <!-- 确保无论是宽屏还是窄屏，navbar-brand都显示 -->
 <a href="##" class="navbar-brand">LOGO</a>
 </div>
 <!-- 屏幕宽度小于768px时，div.navbar-responsive-collapse容器里的内容都会隐藏，显示icon-bar图标，当点击icon-bar图标时，再展开。屏幕大于768px时，默认显示。 -->
 <div class="collapse navbar-collapse navbar-responsive-collapse" id="demo">
 <ul class="nav navbar-nav">
 <li><a href="##">网站首页</a></li>
 <li><a href="##">系列教程</a></li>
 <li><a href="##">名师介绍</a></li>
 <li><a href="##">成功案例</a></li>
 <li><a href="##">关于我们</a></li>
 </ul>
 </div>
</div>

<button class="navbar-toggle" type="button" data-toggle="collapse">
 <span class="sr-only">Toggle Navigation</span>
 <span class="icon-bar"></span>
 <span class="icon-bar"></span>
 <span class="icon-bar"></span>
</button>