可以
<table width="100%" border="1" id="tb">
<tr >
<td>1
</td>
<td >2
</td>
</tr>
<tr >
<td>1
</td>
<td >2
</td>
</tr>
<tr >
<td>1
</td>
<td >2
</td>
</tr>
<tr >
<td>1
</td>
<td >2
</td>
</tr>
</table>
<input type="button" onclick="addcell()" value="AddCell">
<script language="javascript">
function addcell(){
var table=document.getElementById("tb");
for(var i=0;i<table.rows.length;i++){
var newCell=table.rows[i].insertCell();
newCell.innerText=newCell.cellIndex+1;
}
}
</script>
<table width="100%" border="1" id="tb">
<tr >
<td>1
</td>
<td >2
</td>
</tr>
<tr >
<td>1
</td>
<td >2
</td>
</tr>
<tr >
<td>1
</td>
<td >2
</td>
</tr>
<tr >
<td>1
</td>
<td >2
</td>
</tr>
</table>
<input type="button" onclick="addcell()" value="AddCell">
<script language="javascript">
function addcell(){
var table=document.getElementById("tb");
for(var i=0;i<table.rows.length;i++){
var newCell=table.rows[i].insertCell();
newCell.innerText=newCell.cellIndex+1;
}
}
</script>
function AddColumn(tab)
{
for(var i=0;i<tab.rows.length;i++)
{
var objCell = tab.rows[i].insertCell();
objCell.innerText = "test";
}
}
</script>
<input type="button" name="Add" value="添加列" onClick="AddColumn(currentTable)">
<table width="100%" border="1" id="currentTable">
<tr >
<td>1
</td>
<td >2
</td>
</tr>
</table>
val=request("hi")+1
response.Write(val)
%>
<form name="theform" action="2.asp">
<input type="hidden" name="hi" value="<%=val%>">
<table width="100%" border="1" >
<tr >
<% for i=0 to val %>
<td><%=i%></td>
<%next%>
</tr>
</table>
<td>
<input type="submit" value="ok!" ></td>
</form>
var row = document.getElementById('tab').insertRow();
var td = row.insertCell();
td.innerText = 'test';
var td = row.insertCell();
...