修改了jqurey版本，还是不行啊
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>墙外节点</title>
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<link href="http://cdn.bootcss.com/bootstrap/3.3.4/css/bootstrap.css" rel="stylesheet">
<link rel="stylesheet" href="http://cdn.bootcss.com/bootstrap/3.3.4/css/bootstrap-theme.min.css">
<style>
body{padding-top:70 px;}
</style>
</head>
<body>
<div>
<button class="btn btn-default dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-expanded="true">
Dropdown
<span></span>
</button>
<ul role="menu" aria-labelledby="dropdownMenu1">
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Another action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Something else here</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Separated link</a></li>
</ul>
</div>
<div>
<button class="btn btn-default dropdown-toggle" type="button" id="dropdownMenu2" data-toggle="dropdown" aria-expanded="true">
Dropdown
<span></span>
</button>
<ul role="menu" aria-labelledby="dropdownMenu2">
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Another action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Something else here</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Separated link</a></li>
</ul>
</div>
<script src="http://cdn.bootcss.com/jquery/1.11.2/jquery.min.js"></script>
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<script src="http://cdn.bootcss.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
</body>
</html>
你的大大的笨蛋