<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Bootstrap 实例 - 基本的按钮下拉菜单</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>
<script type="text/javascript" src="D:\Download\layui-v2.4.5\layui-v2.4.5\layui/layui.js"></script>
</head>
<body>
<div class="btn-group">
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
<span class="buttonText">默认</span>
<span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu">
<li><a href="#" onclick="shows($(this).text())">功能</a></li>
<li><a href="#" onclick="shows($(this).text())">另一个功能</a></li>
<li><a href="#" onclick="shows($(this).text())">其他</a></li>
<li><a href="#" onclick="shows($(this).text())">分离的链接</a></li>
</ul>
</div>
</body>
<script>
function shows(a) {
$('.buttonText').text(a)
}
</script>
</html>
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