如下所示:

<!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>
</head>

<body>
<script type="text/javascript">
//添加方法
function addtr()
{
  //var trid=0;
  var tab=document.getElementByIdx_x("signFrame");
  //添加行
  var newTR = tab.insertRow(tab.rows.length);
 alert(tab.rows.length);
  //trid++;
  
  //获取序号=行索引
  var xuhao=newTR.rowIndex.toString();
 alert(xuhao);
  newTR.id = "tr" + xuhao;
  //添加列:序号
  var newNameTD=newTR.insertCell(0);
  //添加列内容
  newNameTD.innerHTML = xuhao;
  //添加列:日期
  var newNameTD=newTR.insertCell(1);
  //添加列内容
  newNameTD.innerHTML = "<input name='time" + xuhao + "' id='time" + xuhao + " size='19' onmouseover='this.style.backgroundColor=#6298E1;this.style.color=#000000;' onmouseout='this.style.backgroundColor=#6298E1;this.style.color=#000000;' />";

  //添加列:方式
  var newEmailTD=newTR.insertCell(2);
  //添加列内容
  newEmailTD.innerHTML = "<select style='width:70px;' name='way" + xuhao + "' id='way" + xuhao + "'><option value='电话'>电话</option><option value='QQ'>QQ</option>  </select>";

  //添加列:备注
  var newTelTD=newTR.insertCell(3);
  //添加列内容
  newTelTD.innerHTML = "<input size='60' name='remark" + xuhao + "' id='remark" + xuhao + "' type='text' onclick='showid(this)' />";
    
  //添加列:删除按钮
  var newDeleteTD=newTR.insertCell(4);
  //添加列内容
  newDeleteTD.innerHTML = "<div align='center' style='width:40px'><a href='javascript:;' onclick=\"deltr('tr" + xuhao + "')\">删除</a></div>";
    
}
</script>

<script type="text/javascript">
//删除其中一行
function deltr(trid)
{  //alert(trid);
  var tab=document.getElementByIdx_x("signFrame");
  var row=document.getElementByIdx_x(trid);  
  var index=row.rowIndex;//rowIndex属性为tr的索引值,从0开始 
  tab.deleteRow(index); //从table中删除

  //重新排列序号,如果没有序号,这一步省略
  var nextid;
  for(i=index;i<tab.rows.length;i++){
    tab.rows[i].cells[0].innerHTML = i.toString();
    nextid=i+1;
    remark=document.getElementByIdx_x("remark"+nextid);
    remark.id="remark";
  }
}

</script>


<script type="text/javascript">
  function showid(txt)
  {alert(txt.id);
    }

</script>
<body>
<input type="button" value="保存" onclick="addtr()" />


<table border="1px" width="70%" id="signFrame">
  <tr id="trHeader">
   <td>&nbsp;</td>
   <td>&nbsp;</td>
   <td>&nbsp;</td>
   <td>&nbsp;</td>
   <td>&nbsp;</td>
  </tr>
  <tr id="trHeader">
    <td width="50px">序号</td>
    <td width="170px">时间</td>
    <td width="100px">方式</td>
    <td>备注</td>
    <td width="80px">操作</td>
  </tr>
  <tr id="trHeader">
   <td>&nbsp;</td>
   <td>&nbsp;</td>
   <td>&nbsp;</td>
   <td>&nbsp;</td>
   <td>&nbsp;</td>
  </tr>
  <tr id="trHeader">
   <td>&nbsp;</td>
   <td>&nbsp;</td>
   <td>&nbsp;</td>
   <td>&nbsp;</td>
   <td>&nbsp;</td>
  </tr>
  <tr id="trHeader">
   <td>&nbsp;</td>
   <td>&nbsp;</td>
   <td>&nbsp;</td>
   <td>&nbsp;</td>
   <td>&nbsp;</td>
  </tr>
  <tr id="trHeader">
   <td>&nbsp;</td>
   <td>&nbsp;</td>
   <td>&nbsp;</td>
   <td>&nbsp;</td>
   <td>&nbsp;</td>
  </tr>
</table>

 

</body>
</html>

以上就是小编为大家带来的js实现对table的增加行和删除行的操作方法全部内容了,希望大家多多支持~

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