<title>Bootstrap3 嵌套的按钮组 - 迹忆客(jiyik.com)</title>
<link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<button type="button" class="btn btn-default">按钮 1</button>
<button type="button" class="btn btn-default">按钮 2</button>
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
<span class="caret"></span>
<ul class="dropdown-menu">
<li><a href="#">下拉链接 1</a></li>
<li><a href="#">下拉链接 2</a></li>
