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  • js实现对table的增加行和删除行的操作

    <!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='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='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>

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  • 原文地址:https://www.cnblogs.com/front-end-develop/p/5692684.html
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