<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Bootstrap 实例 - 输入框组的下拉菜单按钮</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>
function haha(x){
$(".form-control").val(x);
$(".dropdown-menu pull-right").hide();
}
</script>
</head>
<body>
<div style="padding: 100px 100px 10px;">
<form class="bs-example bs-example-form" role="form">
<div class="row">
<div class="col-lg-6" style="width:180px">
<div class="input-group">
<input type="text" class="form-control">
<div class="input-group-btn">
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
<span class="caret"></span>
</button>
<ul class="dropdown-menu pull-right">
<li><a href="javascript:haha('aa');">aa</a></li>
<li><a href="javascript:haha('bb');">bb</a></li>
<li><a href="javascript:haha('cc');">cc</a></li>
</ul>
</div><!-- /btn-group -->
</div><!-- /input-group -->
</div><!-- /.col-lg-6 -->
</div><!-- /.row -->
</form>
</div>
</body>
</html>