<!DOCTYPE html>
<html lang="zh-cn">
<head>
<meta charset="utf-8">
<title>多级导航菜单</title>
<meta name="description" content="多级导航菜单">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
.dropdown:hover .menu-top {
display: block;
}
.dropdown-submenu {
position: relative;
}
.dropdown-submenu>.dropdown-menu {
top: 0;
left: 100%;
margin-top: -6px;
margin-left: -1px;
-webkit-border-radius: 0 6px 6px 6px;
-moz-border-radius: 0 6px 6px 6px;
border-radius: 0 6px 6px 6px;
}
.dropdown-submenu:hover>.dropdown-menu {
display: block;
}
.dropdown-submenu>a:after {
display: block;
content: " ";
float: right;
width: 0;
height: 0;
border-color: transparent;
border-style: solid;
border-width: 5px 0 5px 5px;
border-left-color: #cccccc;
margin-top: 5px;
margin-right: -10px;
}
.dropdown-submenu:hover>a:after {
border-left-color: #ffffff;
}
.dropdown-submenu .pull-left {
float: none;
}
.dropdown-submenu.pull-left>.dropdown-menu {
left: -100%;
margin-left: 10px;
-webkit-border-radius: 6px 0 6px 6px;
-moz-border-radius: 6px 0 6px 6px;
border-radius: 6px 0 6px 6px;
}
</style>
<!-- 新 Bootstrap 核心 CSS 文件 -->
<link rel="stylesheet" href="http://cdn.bootcss.com/bootstrap/3.3.4/css/bootstrap.min.css">
<!-- jQuery文件。务必在bootstrap.min.js 之前引入 -->
<script src="http://cdn.bootcss.com/jquery/1.11.2/jquery.min.js"></script>
<!-- 最新的 Bootstrap 核心 JavaScript 文件 -->
<script src="http://cdn.bootcss.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container collapse navbar-collapse navbar-ex1-collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Link</a></li>
<li><a href="#">Link</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Multi Level <b class="caret"></b></a>
<ul class="dropdown-menu menu-top">
<li><a href="#">Level 1</a></li>
<li><a href="#">Level 1</a></li>
<li class="dropdown-submenu"> <a tabindex="-1" href="#">More options</a>
<ul class="dropdown-menu">
<li><a tabindex="-1" href="#">Level 2</a>
</li>
<li class="dropdown-submenu"> <a href="#">More..</a>
<ul class="dropdown-menu">
<li><a href="#">Level 3</a>
</li>
<li><a href="#">Level 3</a>
</li>
<li class="dropdown-submenu"> <a href="#">More..</a>
<ul class="dropdown-menu">
<li><a href="#">Level 4</a>
</li>
<li><a href="#">Level 4</a>
</li>
<li class="dropdown-submenu"> <a href="#">More..</a>
<ul class="dropdown-menu">
<li><a href="#">Level 5</a>
</li>
<li><a href="#">Level 5</a>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
<li><a href="#">Level 2</a>
</li>
<li><a href="#">Level 2</a>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
</body>
</html>
![image]()
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