Bootstrap dropdown menu


This chapter will focus on the Bootstrap drop-down menu. Dropdown menus are toggleable and are context menus that display links in a list format. This can be achieved by interacting with the Dropdown JavaScript plugin.

If you need to use the following menu, you only need to add the drop-down menu in class .dropdown. The following example demonstrates a basic drop-down menu:

<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 实例 - 下拉菜单（Dropdowns）</title>
  <link href="http://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
   <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
   <script src="http://libs.baidu.com/bootstrap/3.0.3/js/bootstrap.min.js"></script></head>
<body>

<div class="dropdown">
   <button type="button" class="btn dropdown-toggle" id="dropdownMenu1" 
      data-toggle="dropdown">
      主题
      <span class="caret"></span>
   </button>
   <ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">
      <li role="presentation">
         <a role="menuitem" tabindex="-1" href="#">Java</a>
      </li>
      <li role="presentation">
         <a role="menuitem" tabindex="-1" href="#">数据挖掘</a>
      </li>
      <li role="presentation">
         <a role="menuitem" tabindex="-1" href="#">
            数据通信/网络
         </a>
      </li>
      <li role="presentation" class="divider"></li>
      <li role="presentation">
         <a role="menuitem" tabindex="-1" href="#">分离的链接</a>
</li>
</ul>
</div>

##</body>
</html>
Instance

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8"> 
	<title>Bootstrap 实例 - 下拉菜单（Dropdowns）</title>
	<link rel="stylesheet" href="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css">
	<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>
</head>
<body>

<div class="dropdown">
	<button type="button" class="btn dropdown-toggle" id="dropdownMenu1" 
			data-toggle="dropdown">
		主题
		<span class="caret"></span>
	</button>
	<ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">
		<li role="presentation">
			<a role="menuitem" tabindex="-1" href="#">Java</a>
		</li>
		<li role="presentation">
			<a role="menuitem" tabindex="-1" href="#">数据挖掘</a>
		</li>
		<li role="presentation">
			<a role="menuitem" tabindex="-1" href="#">数据通信/网络</a>
		</li>
		<li role="presentation" class="divider"></li>
		<li role="presentation">
			<a role="menuitem" tabindex="-1" href="#">分离的链接</a>
		</li>
	</ul>
</div>

</body>
</html>

Run instance»Click the "Run instance" button to view the online instance

Options

Alignment

Align the dropdown menu right by adding class .pull-right to .dropdown-menu. The following example demonstrates this:

<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 实例 - 向右对齐下拉菜单</title>
   <link href="http://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
   <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
   <script src="http://libs.baidu.com/bootstrap/3.0.3/js/bootstrap.min.js"></script></head>
<body>

<div class="dropdown">
   <button type="button" class="btn dropdown-toggle" id="dropdownMenu1" 
      data-toggle="dropdown">主题
      <span class="caret"></span>
   </button>
   <ul class="dropdown-menu pull-right" role="menu" 
      aria-labelledby="dropdownMenu1">
      <li role="presentation">
         <a role="menuitem" tabindex="-1" href="#">Java</a>
      </li>
      <li role="presentation">
         <a role="menuitem" tabindex="-1" href="#">数据挖掘</a>
      </li>
      <li role="presentation">
         <a role="menuitem" tabindex="-1" href="#">
            数据通信/网络
         </a>
      </li>
      <li role="presentation" class="divider"></li>
      <li role="presentation">
         <a role="menuitem" tabindex="-1" href="#">分离的链接</a>
</li>
</ul>
</div>

##</body>
</html>
Instance

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8"> 
	<title>Bootstrap 实例 - 向右对齐下拉菜单</title>
	<link rel="stylesheet" href="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css">
	<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>
</head>
<body>

<div class="dropdown">
	<button type="button" class="btn dropdown-toggle" id="dropdownMenu1" 
			data-toggle="dropdown">主题
		<span class="caret"></span>
	</button>
	<ul class="dropdown-menu pull-right" role="menu" 
		aria-labelledby="dropdownMenu1">
		<li role="presentation">
			<a role="menuitem" tabindex="-1" href="#">Java</a>
		</li>
		<li role="presentation">
			<a role="menuitem" tabindex="-1" href="#">数据挖掘</a>
		</li>
		<li role="presentation">
			<a role="menuitem" tabindex="-1" href="#">数据通信/网络</a>
		</li>
		<li role="presentation" class="divider"></li>
		<li role="presentation">
			<a role="menuitem" tabindex="-1" href="#">分离的链接</a>
		</li>
	</ul>
</div>


</body>
</html>

Run instance»Click the "Run instance" button to view the online instance

Header

You can use class dropdown-header to add a header to the label area of ​​the dropdown menu. The following example demonstrates this:

<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 实例 - 下拉菜单标题</title>
   <link href="http://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
   <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
   <script src="http://libs.baidu.com/bootstrap/3.0.3/js/bootstrap.min.js"></script></head>
<body>

<div class="dropdown">
   <button type="button" class="btn dropdown-toggle" id="dropdownMenu1" 
      data-toggle="dropdown">
      主题
      <span class="caret"></span>
   </button>
   <ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">
      <li role="presentation" class="dropdown-header">下拉菜单标题</li>
      <li role="presentation" >
         <a role="menuitem" tabindex="-1" href="#">Java</a>
      </li>
      <li role="presentation">
         <a role="menuitem" tabindex="-1" href="#">数据挖掘</a>
      </li>
      <li role="presentation">
         <a role="menuitem" tabindex="-1" href="#">
            数据通信/网络
         </a>
      </li>
      <li role="presentation" class="divider"></li>
      <li role="presentation" class="dropdown-header">下拉菜单标题</li>
      <li role="presentation">
         <a role="menuitem" tabindex="-1" href="#">分离的链接</a>
</li>
</ul>
</div>

##</body>
</html>
Instance

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8"> 
	<title>Bootstrap 实例 - 下拉菜单标题</title>
	<link rel="stylesheet" href="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css">
	<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>
</head>
<body>

<div class="dropdown">
	<button type="button" class="btn dropdown-toggle" id="dropdownMenu1" 
			data-toggle="dropdown">
		主题
		<span class="caret"></span>
	</button>
	<ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">
		<li role="presentation" class="dropdown-header">下拉菜单标题</li>
		<li role="presentation" >
			<a role="menuitem" tabindex="-1" href="#">Java</a>
		</li>
		<li role="presentation">
			<a role="menuitem" tabindex="-1" href="#">数据挖掘</a>
		</li>
		<li role="presentation">
			<a role="menuitem" tabindex="-1" href="#">
				数据通信/网络
			</a>
		</li>
		<li role="presentation" class="divider"></li>
		<li role="presentation" class="dropdown-header">下拉菜单标题</li>
		<li role="presentation">
			<a role="menuitem" tabindex="-1" href="#">分离的链接</a>
		</li>
	</ul>
</div>

</body>
</html>

Run instance»Click the "Run instance" button to view the online instance


←
→