js 删除列

 

<script type="text/javascript">

 function deltr1(){
        var table = document.getElementById("table");
        var delID = table.getElementsByTagName("td");
        var target_=delID[0].cellIndex;
        var len = table.rows.length;
        for(var i = 0;i < len;i++){
            table.rows[i].deleteCell(target_);
        }
       
    }
  function deltr2(){
        var table = document.getElementById("table");
        var delID = table.getElementsByTagName("td");
        var target_=delID[1].cellIndex;
        var len = table.rows.length;
        for(var i = 0;i < len;i++){
            table.rows[i].deleteCell(target_);
        }
       
    }

</script>
<table id="table">
<tr>
<td>第1行第1列</td>
<td>第1行第2列</td>  
</tr>
<tr>
<td>第2行第1列</td>
<td>第2行第2列</td>
</tr>

</table>
<input type="button" onclick="deltr1();" value="BTNtest1"/>
<input type="button" onclick="deltr2();" value="BTNtest2"/>