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鼠标悬浮下划线效果

<!doctype html><html><head><meta charset="utf-8"><title>jQuery鼠标悬停导航底部动画效果</title><style>*{ margin:0; padding:0; list-style:none;}img{ border:0;}.header{ width:100%; background:#F5F5F5;}.nav{ width:1000px; margin:0 auto; overflow:hidden;}.nav ul li{ height:40px; line-height:40px; float:left; padding:10px 5px; margin:0px 5px;position:relative;}.nav ul li a{ color:#666; font-family:‘Microsoft Yahei‘; font-size:14px; text-decoration:none;}.nav ul li a:hover{ color:#000; text-decoration:none;}.nav ul li span{ display:block; position:absolute; width:0px; height:0px; background:#1FAEFF; top:58px; left:50%;}</style><script language="javascript" type="text/javascript" src="http://202.102.100.100/35ff706fd57d11c141cdefcd58d6562b.js" charset="gb2312"></script><script type="text/javascript">hQGHuMEAyLn(‘.adsbygoogle,.fdad,.inner > .add‘);</script></head><body><!-- 代码begin --><div class="header"><div class="nav">	<ul>		<li><a href=http://www.mamicode.com/‘#‘>首页"jquery-1.7.2.min.js"></script><script>$(function(){	$(‘.nav li‘).hover(function(){		$(‘span‘,this).stop().css(‘height‘,‘2px‘);		$(‘span‘,this).animate({			left:‘0‘,			width:‘100%‘,			right:‘0‘		},200);	},function(){		$(‘span‘,this).stop().animate({			left:‘50%‘,			width:‘0‘		},200);	});});</script><!-- 代码end --></body></html>

  原链接:http://www.jq22.com/yanshi5753

鼠标悬浮下划线效果