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一 按钮下拉菜单
1 代码
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>组合式下拉菜单</title>
<link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.1.1/css/bootstrap.min.css">
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="btn-group">
<button class="btn btn-default dropdown-toggle" data-toggle="dropdown" type="button">按钮下拉菜单<span
class="caret"></span></button>
<ul class="dropdown-menu">
<li><a href="##">按钮下拉菜单项</a></li>
<li><a href="##">按钮下拉菜单项</a></li>
<li><a href="##">按钮下拉菜单项</a></li>
<li><a href="##">按钮下拉菜单项</a></li>
</ul>
</div>
<script src="https://www.imooc.com/static/lib/jquery/1.9.1/jquery.js"></script>
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
</body>
</html>2 效果
二 按钮的向下向上三角形
1 代码
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>按钮的向下向上三角形</title>
<link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.1.1/css/bootstrap.min.css">
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="btn-group dropup">
<button class="btn btn-default dropdown-toggle" data-toggle="dropdown" type="button">按钮下拉菜单<span
class="caret"></span></button>
<ul class="dropdown-menu ">
<li><a href="##">按钮下拉菜单项</a></li>
<li><a href="##">按钮下拉菜单项</a></li>
<li><a href="##">按钮下拉菜单项</a></li>
<li><a href="##">按钮下拉菜单项</a></li>
</ul>
</div>
<div class="btn-group">
<button class="btn btn-default dropdown-toggle" data-toggle="dropdown" type="button">按钮下拉菜单<span
class="caret"></span></button>
<ul class="dropdown-menu">
<li><a href="##">按钮下拉菜单项</a></li>
<li><a href="##">按钮下拉菜单项</a></li>
<li><a href="##">按钮下拉菜单项</a></li>
<li><a href="##">按钮下拉菜单项</a></li>
</ul>
</div>
<script src="https://www.imooc.com/static/lib/jquery/1.9.1/jquery.js"></script>
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
</body>
</html>2 效果
