<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>Multi-Level Dropdowns</h2>
<p>In this example, we use jQuery to open multi-level dropdowns on click (see script section below).</p>
<div class="dropdown">
<button class="btn btn-default dropdown-toggle" type="button" data-toggle="dropdown">Tutorials
<span class="caret"></span></button>
<ul class="dropdown-menu">
<li><a tabindex="-1" href="tryit.asp-filename=trybs_ref_js_dropdown_multilevel&stacked=h.html#">HTML</a></li>
<li><a tabindex="-1" href="tryit.asp-filename=trybs_ref_js_dropdown_multilevel&stacked=h.html#">CSS</a></li>
<li>
<a class="test" tabindex="-1" href="tryit.asp-filename=trybs_ref_js_dropdown_multilevel&stacked=h.html#">New dropdown <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a tabindex="-1" href="tryit.asp-filename=trybs_ref_js_dropdown_multilevel&stacked=h.html#">2nd level dropdown</a></li>
<li><a tabindex="-1" href="tryit.asp-filename=trybs_ref_js_dropdown_multilevel&stacked=h.html#">2nd level dropdown</a></li>
<li>
<a class="test" href="tryit.asp-filename=trybs_ref_js_dropdown_multilevel&stacked=h.html#">Another dropdown <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="tryit.asp-filename=trybs_ref_js_dropdown_multilevel&stacked=h.html#">3rd level dropdown</a></li>
<li><a href="tryit.asp-filename=trybs_ref_js_dropdown_multilevel&stacked=h.html#">3rd level dropdown</a></li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
</div>
<script>
$(document).ready(function(){
$('.dropdown a.test').on("click", function(e){
$(this).next('ul').toggle();
e.stopPropagation();
e.preventDefault();
});
});
</script>
</body>
</html>