标签：none 元素 port 二级菜单 display child height his 动画
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
ul ul{display: none}
.nav{
width: 180px;
height: 180px;
background-color: red;
}
</style>
</head>
<body>
<ul class="nav">
<li>
<span>一级菜单</span>
<ul>
<li>二级菜单</li>
<li>二级菜单</li>
<li>二级菜单</li>
<li>二级菜单</li>
</ul>
</li>
<li>
<span>一级菜单</span>
<ul>
<li>二级菜单</li>
<li>二级菜单</li>
<li>二级菜单</li>
<li>二级菜单</li>
</ul>
</li>
<li>
<span>一级菜单</span>
<ul>
<li>二级菜单</li>
<li>二级菜单</li>
<li>二级菜单</li>
<li>二级菜单</li>
</ul>
</li>
<li>
<span>一级菜单</span>
<ul>
<li>二级菜单</li>
<li>二级菜单</li>
<li>二级菜单</li>
<li>二级菜单</li>
</ul>
</li>
</ul>
</body>
<script src="jquery.js"></script>
<script>
$(".nav").children("li").mouseover(function(){
$(this).children("ul").stop().show(500)
.parent().siblings().children("ul").stop().hide(500);
})
// 动画开启之前，先停止
// 计时器开启之前，先清除
// .parent()父元素选择器
// .siblings()除了当前的所有同级（兄弟）
</script>
</html>
标签：none 元素 port 二级菜单 display child height his 动画
原文地址：https://www.cnblogs.com/hy96/p/11664398.html
