<html>
<head>
<script type="text/javascript">
window.onload=function(){
var mytable=document.getElementById("mytable").getElementsByTagName("td");
for(var i=0;i<mytable.length;i++){
mytable[i].innerHTML="td_"+i;
}
};
</script>
</head>
<body>
<table id="mytable">
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
</table>
</body>
</html>
本回答被网友采纳