<table id="table1">
<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>
<script language="JavaScript">
<!--
var tds=document.getElementById("table1").getElementsByTagName("td")
for(var i=0;i<tds.length;i++)tds[i].innerText=i
//-->
</script>
<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>
<script language="JavaScript">
<!--
var tds=document.getElementById("table1").getElementsByTagName("td")
for(var i=0;i<tds.length;i++)tds[i].innerText=i
//-->
</script>
给i赋值就可以了啊,
for(var i=0; i<tab.rows.length; i++)
{
for(var j=0; j<tab.rows[i].cells.length; j++)
{
tab.rows[i].cells[j].innerText = i +""+ j;
}
}