本章介绍如何使用Bootstrap类向按钮添加下拉菜单. 要将下拉菜单添加到按钮，只需将按钮和下拉菜单放在.btn组中. 您还可以使用 将按钮表示为下拉菜单.
以下示例演示了基本的简单按钮下拉菜单:
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap 实例 - 基本的按钮下拉菜单</title>
<link href="/bootstrap/css/bootstrap.min.css" rel="stylesheet">
<script src="/scripts/jquery.min.js"></script>
<script src="/bootstrap/js/bootstrap.min.js"></script>
</head>
<body>
<div class="btn-group">
<button type="button" class="btn btn-default dropdown-toggle"
data-toggle="dropdown">
默认 <span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu">
<li><a href="#">功能</a></li>
<li><a href="#">另一个功能</a></li>
<li><a href="#">其他</a></li>
<li class="divider"></li>
<li><a href="#">分离的链接</a></li>
</ul>
</div>
<div class="btn-group">
<button type="button" class="btn btn-primary dropdown-toggle"
data-toggle="dropdown">
原始 <span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu">
<li><a href="#">功能</a></li>
<li><a href="#">另一个功能</a></li>
<li><a href="#">其他</a></li>
<li class="divider"></li>
<li><a href="#">分离的链接</a></li>
</ul>
</div>
</body>
</html>
镓和猴子的制备
如何执行此操作: 坊坊犱简p p p p p / p>
<！ DOCTYPE html>
<头>
引导程序示例-按钮下拉菜单的大小</ title>
<link href =“ / bootstrap / css / bootstrap.min.css” rel =“ stylesheet”>
<script src =“ / scripts / jquery.min.js”> </ script>
<script src =“ / bootstrap / js / bootstrap.min.js”> </脚本>
</ head>
<身体>
<div class =“ btn-group”>
<button type =“ button” class =“ btn btn-default dropdown-toggle btn-lg”
data-toggle =“下拉列表”>
<Span class =“ caret”> </ span>默认情况下
</按钮>
<ul class =“ dropdown-menu”角色=“ menu”>
<li> <a href="#">功能</a> </ li>
<li> <a href="#">另一个功能</a> </ li>
<li> <a href="#">其他</a> </ li>
<li class =“ divider”> </ li>
<li> <a href="#">单独的链接</a> </ li>
</ ul>
</ div>
<div class =“ btn-group”>
<button type =“ button” class =“ btn btn-primary dropdown-toggle btn-sm”
data-toggle =“下拉列表”>
原始<span class =“ caret”> </ span>
</按钮>
<ul class =“ dropdown-menu”角色=“ menu”>
<li> <a href="#">功能</a> </ li>
<li> <a href="#">另一个功能</a> </ li>
<li> <a href="#">其他</a> </ li>
<li class =“ divider”> </ li>
<li> <a href="#">单独的链接</a> </ li>
</ ul>
</ div>
<div class =“ btn-group”>
<button type =“ button” class =“ btn btn-成功下拉-切换btn-xs”
data-toggle =“下拉列表”>
成功<span class =“ caret”> </ span>
</按钮>
<ul class =“ dropdown-menu”角色=“ menu”>
<li> <a href="#">功能</a> </ li>
<li> <a href="#">另一个功能</a> </ li>
<li> <a href="#">其他</a> </ li>
<li class =“ divider”> </ li>
<li> <a href="#">单独的链接</a> </ li>
</ ul>
</ div>
</ body>
</ html></p>
<p>镓和猴子的制备</p>
<p><img src='http://www.w3cschool.cc/wp-content/uploads/2014/06/buttondropdownsize_demo.jpg' alt=''/></p>
<p>选择彧彧彧彧彧彧彧彧彧彧彧彧彧彧彧彧彧彧彧彧彧彧. btn-group姞姞drop drop drop p p / p></p>
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<div class='ds-avatar left'><img src='/images/noavatar_default.png' alt='徐理
'></div>
<div class='ds-comment-body'>
<div class='ds-comment-header'><span class='ds-user-name ds-highlight' data-qqt-account=''>徐理
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<p>家电使用20年还杠杠的只能说明设计过度
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<span class='ds-time' datetime='2026-04-28 10:30:19' title='2026年04月28日 10:30:19'>2026年04月28日</span>
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<div class='ds-post-self' data-post-id='17773487912' data-thread-id='17773487912' data-root-id='0' data-source='duoshuo'>
<div class='ds-avatar left'><img src='/images/noavatar_default.png' alt='李浩
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<div class='ds-comment-header'><span class='ds-user-name ' data-qqt-account=''>李浩
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<p>不过美国所谓亚太盟国对此并不买帐
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<span class='ds-time' datetime='2026-04-28 14:11:55' title='2026年04月28日 14:11:55'>2026年04月28日</span>
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<a class='ds-post-likes' href='javascript:void(0);'><i class='fa fa-heart fa-fw'></i>顶</a>
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<div class='ds-comment-header'><span class='ds-user-name ' data-qqt-account=''>何鑫
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<p>现在需要探讨的是对美斗争的策略
</p>
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