样式:
<style>
*{ margin:0; padding:0; list-style:none; text-decoration:none; color:#000;}
li.on{ background-color:#f00;}
li.on a{ color:#fff;}
</style>
html:
<div style="width:200px; height:300px; border:1px solid red; margin:50px auto; text-align:center;">
<ul>
<li style="line-height:32px;"><a href="javascript:void(0);">1111111</a></li>
<li style="line-height:32px;"><a href="javascript:void(0);">2222222</a></li>
<li style="line-height:32px;"><a href="javascript:void(0);">3333333</a></li>
<li style="line-height:32px;"><a href="javascript:void(0);">4444444</a></li>
<li style="line-height:32px;"><a href="javascript:void(0);">5555555</a></li>
</ul>
</div>
js:
<script>
function li(){
var li=document.getElementsByTagName('li');
for(var i=0;i<li.length;i++){
li[i].index=i;
li[i].onclick=function(){
alert(this.index);
for(var j=0;j<li.length;j++){
li[j].className='';
}
this.className='on';
};
}
}
li();
</script>