鼠标移上去时，改变li元素的大小、背景色、文字颜色等
代码如下：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
ul {
margin: 0
padding: 0
}
ul li {
list-style: none
width: 130px
height: 50px
text-align: center
line-height: 50px
font-size: 20px
position: relative
margin-left: 10px
}
div {
width: 150px
height: 500px
border: 1px dashed #000000
text-align: center
}
.active {
background-color: green
color: #fff
}
.show {
width: 2px
height: 20px
position: absolute
left: 10px
top: 15px
background-color: white
}
.li1 {
left: 20px
border-radius: 5px
}
</style>
</head>
<body>
<div id="div1">
<ul>
<li><span></span>雅望天堂1</li>
<li><span></span>雅望天堂2</li>
<li><span></span>雅望天堂3</li>
<li><span></span>雅望天堂4</li>
</ul>
</div>
<script type="text/javascript">
var oLi = document.getElementsByTagName("li")
var oSpan = document.getElementsByTagName("span")
for (var i = 0i <oLi.lengthi++) {
oLi[i].onmouseover = function() {
var sp = this.childNodes[0]
console.log(sp)
for (var i = 0i <oLi.lengthi++) {
oLi[i].setAttribute("class", "")
oSpan[i].setAttribute("class", "")
}
this.setAttribute("class", "active li1")
sp.setAttribute("class", "show")
}
oLi[i].onmouseout = function() {
for (var i = 0i <oLi.lengthi++) {
oLi[i].setAttribute("class", "")
}
}
}
</script>
</body>
</html>
这应该是你要的效果
建议使用FF，Safari，举个例子：<!doctype html>
<html>
<head>
<title>HTML5+CSS3+JavaScript</title>
<meta http-equiv="Content-Type" content="text/htmlcharset=gb2312" />
<meta http-equiv="Content-Type" content="text/htmlcharset=gbk" />
<meta http-equiv="Content-Type" content="text/htmlcharset=utf-8" />
<meta http-equiv="Content-Language" content="zh-cn" />
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<style type="text/css">
body {
behavior: url(ie-css3.htc)
}
* {margin:0 autopadding:0}
body {font-size:13pxfont-family:Arial}
ul li {list-style:none}
#menu {
width:982px
height:35px
margin-top:20pxdisplay:block
background: #e3e3e3
background: -moz-linear-gradient(top, #ccc, #999)
background: -webkit-gradient(linear, left top, left bottom, from(#ccc), to(#999))
-moz-box-shadow: 1px 1px 3px #333
-webkit-box-shadow: 1px 1px 3px #333
box-shadow: 1px 1px 3px #333
-webkit-border-top-left-radius:4px
-webkit-border-top-right-radius:4px
-moz-border-radius-topleft:4px
-moz-border-radius-topright:4px
-webkit-border-bottom-left-radius:4px
-webkit-border-bottom-right-radius:4px
-moz-border-radius-bottomleft:4px
-moz-border-radius-bottomright:4px
-o-border-radius:4px
-khtml-border-radius:4px
text-shadow: 0 1px 0 white
}
#menu ul {
margin-left:0
}
#menu ul li {
display:inline
}
#menu ul li a:link, a:visited {
text-align:centerfloat:leftwidth:6.8emtext-decoration:nonepadding:7.5px 0.75emfont-size:16pxfont-weight:boldmargin-top:0pxborder-right:1px solid #ccccolor: #454545
}
#menu ul li a:hover {
text-decoration:none
background:-webkit-gradient(linear, left top, left bottom, from(#333), to(#ccc))
background: -moz-linear-gradient(top, #333, #ccc)
-webkit-background-size:0 35px
color: #ddd
text-shadow: 0 1px 0 black
}
.text {
border:1px solid graywidth:150pxheight:17pxposition:relativetop:8pxleft:13pxfont-family:Arial
-webkit-border-top-left-radius:90px
-webkit-border-top-right-radius:90px
-moz-border-radius-topleft:90px
-moz-border-radius-topright:90px
-webkit-border-bottom-left-radius:90px
-webkit-border-bottom-right-radius:90px
-moz-border-radius-bottomleft:90px
-moz-border-radius-bottomright:90px
-o-border-radius:90px
-khtml-border-radius:90px
}
</style>
<script language="JavaScript" type="text/javascript">
(function()
{
if(!0)
return
var e = "abbr,article,aside,audio,bb,canvas,datagrid,datalist,details,dialog, eventsource,figure,footer,hgroup,header,mark,menu,meter,nav,output,progress,section,time,video".split(','),i=0,length=e.length
while(i<length)
{
document.createElement_x(e[i++])
}
})()
</script>
</head>
<body>
<menu id="menu"><form action="index.php" method="get">
<ul>
<li><a href="#" title="HomePage">HomePage</a></li>
<li><a href="#" title="Introuduce">Introuduce</a></li>
<li><a href="#" title="Products">Products</a></li>
<li><a href="#" title="My album">My album</a></li>
<li><a href="#" title="Shopping">Shopping</a></li>
<li><a href="#" title="Contact our">Contact our</a></li>
</ul>
<input type="search" class="text" value="search..." /></form>
</menu>
<body>
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