js控制table从哪一行开始：增加或者删出一行。js应该怎样写

<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>交接单</title>
</head><body><table width="100%" border="1" bordercolor="#000000" cellpadding="1">  <tr align="center">
    <td width="136" height="25"> </td>
    <td colspan="7"> </td>
  </tr>
  <tr align="center">
    <td height="25"> </td>
    <td width="141"> </td>
    <td width="60"> </td>
    <td width="60"> </td>
    <td width="248" colspan="3"> </td>
    <td width="163"> </td>
  </tr>
</table>
</body>
</html>
例如上面html页面，弄2个按钮控制从第二行开始往后增加或者删除一行，js代码如何写？

解决方案 »

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var table = document.getElementById("tableId");
                         var tr = table.insertRow(0);//0表示放在最上边
var td1 = tr.insertCell();//插入单元格
var td2 = tr.insertCell();
var td3 = tr.insertCell();
                        td1.innerHTML = "ffffff";//单元格增加内容
td2.innerHTML = "DDDD";
td3.innerHTML = "DDDAAa";
var table =   document.getElementById('tableId') ;
       table.deleteRow(rowIndex);//rowIndex是一个整数，如果删除是第一个是0，第二个是1,以次类推
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style>
</style>
<script src="jquery-1.3.2.js"></script>
<script>
$(document).ready(function(){
    $("#add").click(function(){
     $("table").append("<tr align='center'>"+
       "<td height='25'> 1</td>"+
   "<td width='141'> 2</td>"+
   "<td width='60'> 3</td>"+
   "<td width='60'> 4</td>"+
   "<td width='248' colspan='3'>5 </td>"+
   "<td width='163'> 6</td>"+
   "</tr>")
});
$("#delete").click(function(){
if($("table tr:gt(0)").html() != null){
         $("table tr:last").remove();
}
});
});
</script>
</head><body>
<table width="100%" border="1" bordercolor="#000000" cellpadding="1">  <tr align="center">
      <td width="136" height="25"> </td>
      <td colspan="7"> </td>
  </tr>
  <tr align="center">
      <td height="25"> 1</td>
      <td width="141"> 2</td>
      <td width="60"> 3</td>
      <td width="60"> 4</td>
      <td width="248" colspan="3">5 </td>
      <td width="163"> 6</td>
  </tr>
</table>
<input type="button" id="add" value="增加一行" />
<input type="button" id="delete" value="减少一行" />
</body>
</html>
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