<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script language="javascript">
function show(){
var tab=document.getElementById("tab");
var tr=tab.getElementsByTagName("tr");
for(var i=0;i<=tr.length;i++){
if(i%2==0){
tr[i].style.backgroundColor="#ccc";
tr[i].onmouseover=function(){this.style.background="red"};
tr[i].onmouseout=function(){this.style.background="#ccc"}
}else{
tr[i].style.backgroundColor="#fff";
tr[i].onmouseover=function(){this.style.background="red"};
tr[i].onmouseout=function(){this.style.background="#fff"}
}
}
}
window.onload=show;
</script>
</head>
<body>
<table id="tab" width="50%">
<tr><td>dfdsf</td><td>dfdsf</td></tr>
<tr><td>dfdsf</td><td>dfdsf</td></tr>
<tr><td>dfdsf</td><td>dfdsf</td></tr>
<tr><td>dfdsf</td><td>dfdsf</td></tr>
<tr><td>dfdsf</td><td>dfdsf</td></tr>
</table>
</body>
</htmll>
代码
