<head>
<title></title>
<style type="text/css">
#u1
{
float:left;
background-color:rgba(180,180,180,0.6);
}
li
{
width:84px;
list-style-type:none;
float:left;
font-size:20px;
font-weight:bold;
}
.style1
{
background-color:Blue;
}
.style2{background-color:white; }
</style>
<script src="js/jquery-1.4.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
$("li").mousemove(function () {
$(this).addClass("style1").mouseout(function () {
$(this).removeClass("style1");
});
});
});
</script>
</head>
<body>
<ul id="u1">
<li>首页</li> 
<li>产品中心</li> 
<li>新闻中心</li> 
<li>咨询投诉</li> 
<li>关于我们</li>
</ul>
</body>
</html>
追问![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/d043ad4bd11373f06f0fa356ac0f4bfbfaed04c3?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
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