<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Test</title>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<link rel="stylesheet" href="./css/reset.css">
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<style>
* {
box-sizing: border-box;
padding: 0;
margin: 0;
}
div {
line-height: 1;
}
.navbar {
min-height: 50px;
border: 2px solid transparent;
}
.navbar:after, .nav:after {
content: '';
display: block;
visibility: hidden;
clear: both;
}
.navbar-default {
background: #f9f9f9;
border-color: #e7e7e7;
}
.navbar-header {
line-height: .4;
}
.nav {
list-style: none;
}
.nav > li > a, .navbar-header > a {
display: block;
padding: 10px 15px;
}
.caret {
display: inline-block;
margin: 5px;
border-right: 4px solid transparent;
border-left: 4px solid transparent;
border-top: 4px dashed;
}
@media (min-width: 768px) {
.navbar-header, .navbar-nav, .navbar-nav > li {
float: left;
}
.navbar-nav > li > a, .navbar-header > a {
padding: 15px;
}
}
.dropdown {
position: relative;
}
.dropdown-menu {
display: none;
position: absolute;
top: 100%;
left: 0;
z-index: 100;
border: 1px solid #ddd;
border-radius: 4px;
min-width: 100%;
padding: 3px 0;
}
@keyframes fade {
0% {
transform: translate3d(-100%,0,0);
opacity: 0;
}
100% {
transform: translate3d(0,0,0);
opacity: 1;
}
}
.open > .dropdown-menu {
display: block;
}
ul {
list-style: none;
}
.dropdown-menu a {
display: block;
padding: 5px 20px;
min-width: 100px;
white-space: nowrap;
}
@media (max-width: 768px) {
.dropdown-menu {
position: static;
border: none;
}
}
@media (min-width: 768px) {
.dropdown-menu .dropdown-menu {
position: absolute;
top: 0;
left: 100%;
}
.dropdown-menu {
animation: fade .3s ease-in alternate forwards;
transition: all .2s;
}
}
</style>
</head>
<body>
<div class="navbar navbar-default" role="navigation">
<div class="navbar-header">
<a href="##" class="navbar-brand">慕课网</a>
</div>
<ul class="nav navbar-nav">
<li class="active"><a href="##">网站首页</a></li>
<li class="dropdown">
<a href="##" data-toggle="dropdown" class="dropdown-toggle">系列教程<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="##">CSS3</a></li>
<li class="dropdown">
<a href="##" class="dropdown-toggle">JavaScript<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="##">名师介绍</a></li>
<li class="dropdown">
<a href="##" class="dropdown-toggle">成功案例<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="##">CSS3</a></li>
<li><a href="##">JavaScript</a></li>
<li class="disabled"><a href="##">PHP</a></li>
</ul>
</li>
<li><a href="##">关于我们</a></li>
</ul>
</li>
<li class="disabled"><a href="##">PHP</a></li>
</ul>
</li>
<li><a href="##">名师介绍</a></li>
<li><a href="##">成功案例</a></li>
<li><a href="##">关于我们</a></li>
</ul>
</div>
<script>
$('.dropdown-toggle').click(function(e) {
e.stopPropagation();
$(this).parent().toggleClass('open');
})
$(document).click(function() {
$('.dropdown').removeClass('open');
})
</script>
</body>
</html>
