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tab切换效果
syqaily的博客
Original
774 people have browsed it
<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style>
			body,ul{ margin: 0; padding: 0;}
			li{list-style: none;}
			a{text-decoration: none;}
			.clearfix:after{content: ""; display: block; clear: both;}
			.clearfix{zoom: 1;}
			#list{width: 400px; margin: 100px auto 0; font-size: 14px; font-family: "微软雅黑";}
			#list>li{width: 100px; background: #ccc; float: left;}
			#list .active{background: red;}
			#list a{color: #333;display: block;}
			#list li{height: 30px; line-height: 30px; text-align: center;}
			#list ul{display: none;}
			#list ul li{width: 120px; background: green; margin-bottom: 5px;}
			#list ul li:hover{background: yellow;}
		</style>
	</head>
	<body>
		 <ul id="list" class="clearfix">
		 	<li class="active">
		 		<a href="">登录</a>
		 	  <ul style="display: block;">
		 		<li><a href="">11</a></li>
		 		<li><a href="">22</a></li>
		 		<li><a href="">33</a></li>
		 		<li><a href="">44</a></li>
		 	  </ul>
		 	</li>
		 	<li>
		 		<a href="">微博</a>
		 	   <ul>
		 		<li><a href="">11</a></li>
		 		<li><a href="">22</a></li>
		 		<li><a href="">33</a></li>
		 		<li><a href="">44</a></li>
		 		</ul>
		 	</li>
		 	<li>
		 		<a href="">博客</a>
		 	  <ul>
		 		<li><a href="">11</a></li>
		 		<li><a href="">22</a></li>
		 		<li><a href="">33</a></li>
		 		<li><a href="">44</a></li>
		 		</ul>
		 	</li>
		 	<li>
		 		<a href="">邮箱</a>
		 	   <ul>
		 		<li><a href="">11</a></li>
		 		<li><a href="">22</a></li>
		 		<li><a href="">33</a></li>
		 		<li><a href="">44</a></li>
		 		</ul>
		 	</li>
		 </ul>
		 <script>
		 	var oList=document.getElementById('list');
		 	var aLi=oList.children;
		 	var aUl=oList.getElementsByTagName('ul');
		 	var len=aLi.length;
		 	for(var i=0;i<len;i++){
		 		aLi[i].index=i;
		 		aLi[i].onmouseover=function(){
		 			for(var i=0;i<len;i++){
		 				aLi[i].className='';
		 				aUl[i].style.display='none';
		 			}
		 			   this.className='active';
		 			   aUl[this.index].style.display='block';
		 		}
		 	}
		 </script>
	</body>
</html>


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