js implements the operation method of adding rows and deleting rows to the table-JS Tutorial-php.cn

js implements the operation method of adding rows and deleting rows to the table

高洛峰

Release： 2016-12-29 16:23:09

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As shown below:

<!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=&#39;time" + xuhao + "&#39; id=&#39;time" + xuhao + " size=&#39;19&#39; onmouseover=&#39;this.style.backgroundColor=#6298E1;this.style.color=#000000;&#39; onmouseout=&#39;this.style.backgroundColor=#6298E1;this.style.color=#000000;&#39; />";
 
  //添加列:方式
  var newEmailTD=newTR.insertCell(2);
  //添加列内容
  newEmailTD.innerHTML = "<select style=&#39;width:70px;&#39; name=&#39;way" + xuhao + "&#39; id=&#39;way" + xuhao + "&#39;><option value=&#39;电话&#39;>电话</option><option value=&#39;QQ&#39;>QQ</option>  </select>";
 
  //添加列:备注
  var newTelTD=newTR.insertCell(3);
  //添加列内容
  newTelTD.innerHTML = "<input size=&#39;60&#39; name=&#39;remark" + xuhao + "&#39; id=&#39;remark" + xuhao + "&#39; type=&#39;text&#39; onclick=&#39;showid(this)&#39; />";
     
  //添加列:删除按钮
  var newDeleteTD=newTR.insertCell(4);
  //添加列内容
  newDeleteTD.innerHTML = "<div align=&#39;center&#39; style=&#39;width:40px&#39;><a href=&#39;javascript:;&#39; onclick=\"deltr(&#39;tr" + xuhao + "&#39;)\">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> </td>
   <td> </td>
   <td> </td>
   <td> </td>
   <td> </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> </td>
   <td> </td>
   <td> </td>
   <td> </td>
   <td> </td>
  </tr>
  <tr id="trHeader">
   <td> </td>
   <td> </td>
   <td> </td>
   <td> </td>
   <td> </td>
  </tr>
  <tr id="trHeader">
   <td> </td>
   <td> </td>
   <td> </td>
   <td> </td>
   <td> </td>
  </tr>
  <tr id="trHeader">
   <td> </td>
   <td> </td>
   <td> </td>
   <td> </td>
   <td> </td>
  </tr>
</table>
 
  
 
</body>
</html>

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