一直认为二级菜单的出现效果只有js才能控制,今天研究了一下阿里巴巴网站的首页,才发现,原来二级菜单的动态显示也可以使用CSS来控制,原来对CSS是静态的东西一直是误解它了,CSS也可以实现动态的效果,现把主要代码展示如下:

HTML代码:

复制代码代码如下:
<span><h3><!DOCTYPE html>
<html>
<link href="1_files/a.css" rel="stylesheet" type="text/css" media="all">
<div class="ls-cate" data-spm="1997230041">
<ul>
<li>
<a href="http://imgbuyun.weixiu-service.com/up79/202309/nfyyigredk1.htm
<div>
<span class="title">Agriculture</span>
<a href="http://imgbuyun.weixiu-service.com/up79/202309/wivmc4sxr01.htm
<a href="http://imgbuyun.weixiu-service.com/up79/202309/o2vpcrfwxhv.htm
<a href="http://imgbuyun.weixiu-service.com/up79/202309/fa4erbitmm1.htm Oil</a>
<a href="http://www.alibaba.com/catalogs/--100008999">Herbal Cigars & Cigarettes</a>
<a href="http://imgbuyun.weixiu-service.com/up79/202309/paevkklme2w.htm & Animal Oil</a>
<a class="more" href="http://imgbuyun.weixiu-service.com/up79/202309/usrndjd32rr.htm all categories</a>
</div>
</li>
</ul>
</div></body></html></h3></span>

CSS代码:

复制代码代码如下:
<span><h3>.ls-cate li div{
display:none;
position:absolute;
z-index:2;
left:190px;
top:-1px;
border:1px solid #DDD;
background-color:#FFF;
box-shadow:3px 3px 6px #C2C2C2
}
.ls-cate li div .title,.ls-cate li div a{
display:block;
background-color:#FFF
}
.ls-cate li:hover div{
display:block
}
</h3></span>

源码

CSS控制二级菜单动态出现不只有js才能做到