Bootstrap基本组件学习笔记之按钮组(8)

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按钮组允许多个按钮被堆叠在同一行上，实现起来非常简单。

0x01 基本用法

直接看下面的例子：

<!DOCTYPE html>
<html lang="zh-cn">
<head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <link href="../../css/bootstrap.min.css" rel="stylesheet">
 <script src="http://cdn.bootcss.com/jquery/1.11.1/jquery.min.js"></script>
 <script src="../../js/bootstrap.min.js"></script>
 <title>按钮组</title>
</head>
<body>
<div class="container">
 <div class="col-lg-3">
  <h3>水平排列</h3>
  <div class="btn-group">
   <button type="button" class="btn btn-default">Left</button>
   <button type="button" class="btn btn-default">Middle</button>
   <button type="button" class="btn btn-default">Right</button>
  </div>
 </div>
 <div class="col-lg-3">
  <h3>垂直排列</h3>
  <div class="btn-group btn-group-vertical">
   <button type="button" class="btn btn-default">Top</button>
   <button type="button" class="btn btn-default">Middle</button>
   <button type="button" class="btn btn-default">Bottom</button>
  </div>
 </div>
 <div class="col-lg-3">
  <h3>两端对齐</h3>
  <div class="btn-group btn-group-justified">
   <a href="#" class="btn btn-default">Left</a>
   <a href="#" class="btn btn-default">Middle</a>
   <a href="#" class="btn btn-default">Right</a>
  </div>
 </div>
</div>
</body>
</html>

效果如下：

需要注意的是，两端对齐的样式只对a标签有效，对button无效。

0x02 嵌套下拉菜单

下面是一个按钮组嵌套下拉菜单的例子：

<!DOCTYPE html>
<html lang="zh-cn">
<head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <link href="../../css/bootstrap.min.css" rel="stylesheet">
 <script src="http://cdn.bootcss.com/jquery/1.11.1/jquery.min.js"></script>
 <script src="../../js/bootstrap.min.js"></script>
 <title>按钮嵌套下拉菜单</title>
</head>
<body>
<div class="container">
 <div class="page-header">
 <h3>按钮嵌套下拉菜单</h3>
 </div>
 <div class="btn-group">
 <button type="button" class="btn btn-default">按钮1</button>
 <button type="button" class="btn btn-default">按钮2</button>
 <a href="#" class="btn btn-default">超链接</a>
 <div class="btn-group">
  <div class="dropdown">
  <button type="button" class="btn btn-primary" data-toggle="dropdown">
   下拉菜单
   <span class="caret"></span>
  </button>
  <ul class="dropdown-menu">
   <li class="active"><a href="#">菜单1</a></li>
   <li><a href="#">菜单2</a></li>
   <li class="divider"></li>
   <li><a href="#">菜单3</a></li>
   <li><a href="#">菜单4</a></li>
  </ul>
  </div>
 </div>
 <button type="button" class="btn btn-default">按钮3</button>
 </div>
</div>
</body>
</html>

效果如下：