<!DOCTYPE html>
<html>
<head>
<title>高级隔行变色</title>
</head>
<script type="text/javascript">
window.onload=function(){
var otb = document.getElementById('tab');
for(var i=0; i<otb.tBodies[0].rows.length;i++){
var otable = '';
otb.tBodies[0].rows[i].onmouseover=function(){
otable = this.style.background;
this.style.background='red';
};
otb.tBodies[0].rows[i].onmouseout=function(){
this.style.background=otable;
}
if(i%2==0){
otb.tBodies[0].rows[i].style.background='grey';
}
else {
otb.tBodies[0].rows[i].style.background='';
}
}
};
</script>
<body>
<table border="2" style="text-align: center;" width="600px;" id="tab">
<thead>
<tr>
<th>编号</th>
<th>姓名</th>
<th>年龄</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>zs</td>
<td>12</td>
</tr>
<tr>
<td>2</td>
<td>ls</td>
<td>32</td>
</tr>
<tr>
<td>3</td>
<td>ww</td>
<td>22</td>
</tr>
</tbody>
</table>
</body>
</html>
js高级隔行变色（移入移出高亮） 
![JavaScript自学笔记【4】函数的声明与调用目录二、函数的声明 三、函数的调用[图]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)