jQuery实现竖排菜单

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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<head>
<script src="JS/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
function initMenu() {
$('#menu ul').hide();
$('#menu ul:first').show();
$('#menu li a').click(
function() {
var checkElement = $(this).next();
if((checkElement.is('ul')) && (checkElement.is(':visible'))) {
return false;
}
if((checkElement.is('ul')) && (!checkElement.is(':visible'))) {
$('#menu ul:visible').slideUp('normal');
checkElement.slideDown('normal');
return false;
}
}
);
}
$(document).ready(function() {initMenu();});
</script>
<style>
body{font-family: Helvetica, Arial, sans-serif; font-size: 0.9em;}
p{line-height: 1.5em;}
ul#menu, ul#menu ul{list-style-type:none; margin: 0; padding: 0; 15em;}
ul#menu a{display: block; text-decoration: none;}
ul#menu li{margin-top: 1px;}
ul#menu li a{background: #333; color: #fff; padding: 0.5em;}
ul#menu li a:hover{background: #000;}
ul#menu li ul li a{background: #ccc; color: #000; padding-left: 20px;}
ul#menu li ul li a:hover{background: #aaa; border-left: 5px #000 solid; padding-left: 15px;}
.code{border: 1px solid #ccc; list-style-type: decimal-leading-zero; padding: 5px; margin: 0;}
.code code{display: block; padding: 3px; margin-bottom: 0;}
.code li{background: #ddd; border: 1px solid #ccc; margin: 0 0 2px 2.2em;}
.indent1{padding-left: 1em;}
.indent2{padding-left: 2em;}
</style>
<title>网页竖排菜单jQuery版</title>
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li a {display:inline-block;}
li a {display:block;}
</style>
<![endif]-->
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原文地址:https://www.cnblogs.com/eyunhua/p/3685027.html