<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<title>Bootstrap 下拉菜单</title>

<link rel="stylesheet" href="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css">  

</head>

<body>

<div class="container">

<h2>下拉菜单</h2>

<div class="dropdown">

<button class="btn btn-default dropdown-toggle" type="button" id="menu1" data-toggle="dropdown">

教程

<span class="caret"></span>

</button>


<ul class="dropdown-menu" role="menu" aria-labelledby="menu1">

     <li role="presentation"><a role="menuitem" tabindex="-1" href="#">HTML</a></li>

     <li role="presentation" class="disabled"><a role="menuitem" tabindex="-1" href="#">CSS</a></li>

     <li role="presentation"><a role="menuitem" tabindex="-1" href="#">JavaScript</a></li>

     <li role="presentation" class="divider"></li>

     <li role="presentation"><a role="menuitem" tabindex="-1" href="#">关于我们</a></li>

   </ul>

</div>

</div>

    <script src="http://cdn.static.runoob.com/libs/jquery/2.1.1/jquery.min.js"></script>

  <script src="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/js/bootstrap.min.js"></script>

</body>

</html>

Bootstrap 下拉菜单disabled_Bootstrap