js动态给table添加行(tr)

2023-08-07 22:48:10

html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>

<head>

<title> new document </title>

<meta charset="utf-8"/>

<meta name="generator" content="editplus">

<meta name="author" content="">

<meta name="keywords" content="">

<meta name="description" content="">

</head>

<body>

    <div>

        <table width="613" border="0" cellpadding="2" cellspacing="1" id="SignFrame">

              <tr id="trHeader">

                <td width="27" bgcolor="#96E0E2">序号</td>

                <td width="64" bgcolor="#96E0E2">用户姓名</td>

                <td width="98" bgcolor="#96E0E2">电子邮箱</td>

                <td width="92" bgcolor="#96E0E2">固定电话</td>

                <td width="86" bgcolor="#96E0E2">移动手机</td>

                <td width="153" bgcolor="#96E0E2">公司名称</td>

                <td width="57" align="center" bgcolor="#96E0E2">&nbsp;</td>

              </tr>

        </table>

   </div>

   <div>

        <input type="button" name="Submit" value="添加参与人" onclick="AddSignRow()" />

        <input type="button" name="Submit2" value="清空" onclick="ClearAllSign()" />

        <input name='txtTRLastIndex' type='hidden' id='txtTRLastIndex' value="1" />

   </div>

</body>

</html>

javascript

<script language="javascript">// Example: obj = findObj("image1");

    function findObj(theObj, theDoc){

        var p, i, foundObj;

        if(!theDoc){

            theDoc = document;

        }

        if( (p = theObj.indexOf("?")) > 0 && parent.frames.length){

            theDoc = parent.frames[theObj.substring(p+1)].document;

            theObj = theObj.substring(0,p);

        }

        if(!(foundObj = theDoc[theObj]) && theDoc.all){

            foundObj = theDoc.all[theObj];

        }

        for (i=0; !foundObj && i < theDoc.forms.length; i++){

            foundObj = theDoc.forms[i][theObj];

        }

        for(i=0; !foundObj && theDoc.layers && i < theDoc.layers.length; i++){

            foundObj = findObj(theObj,theDoc.layers[i].document);

        }

        if(!foundObj && document.getElementById){

            foundObj = document.getElementById(theObj);

            return foundObj;

        }

    }

    //添加一个参与人填写行

    function AddSignRow(){

        //读取最后一行的行号，存放在txtTRLastIndex文本框中

        var txtTRLastIndex = findObj("txtTRLastIndex",document);

        var rowID = parseInt(txtTRLastIndex.value);

        var signFrame = findObj("SignFrame",document);

        //添加行

        var newTR = signFrame.insertRow(signFrame.rows.length);

        newTR.id = "SignItem" + rowID;

        //添加列:序号

        var newNameTD = newTR.insertCell(0);

        //添加列内容

        newNameTD.innerHTML = newTR.rowIndex.toString();

        //添加列:姓名

        var newNameTD = newTR.insertCell(1);

        //添加列内容

        newNameTD.innerHTML = "<input name='txtName" + rowID + "' id='txtName" + rowID + "' type='text' size='12' />";

        //添加列:电子邮箱

        var newEmailTD = newTR.insertCell(2);

        //添加列内容

        newEmailTD.innerHTML = "<input name='txtEMail" + rowID + "' id='txtEmail" + rowID + "' type='text' size='20' />";

        //添加列:电话

        var newTelTD = newTR.insertCell(3);

        //添加列内容

        newTelTD.innerHTML = "<input name='txtTel" + rowID + "' id='txtTel" + rowID + "' type='text' size='10' />";

        //添加列:手机

        var newMobileTD = newTR.insertCell(4);

        //添加列内容

        newMobileTD.innerHTML = "<input name='txtMobile" + rowID + "' id='txtMobile" + rowID + "' type='text' size='12' />";

        //添加列:公司名

        var newCompanyTD = newTR.insertCell(5);

        //添加列内容

        newCompanyTD.innerHTML = "<input name='txtCompany" + rowID + "' id='txtCompany" + rowID + "' type='text' size='20' />";

        //添加列:删除按钮

        var newDeleteTD = newTR.insertCell(6);

        //添加列内容

        newDeleteTD.innerHTML = "<div align='center' style='width:40px'><a href='javascript:;' onclick=\"DeleteSignRow('SignItem" + rowID + "')\">删除</a></div>";

        //将行号推进下一行

        txtTRLastIndex.value = (rowID + 1).toString() ;

    }

    //删除指定行

    function DeleteSignRow(rowid){

        var signFrame = findObj("SignFrame",document);

        var signItem = findObj(rowid,document);

        //获取将要删除的行的Index

        var rowIndex = signItem.rowIndex;

        //删除指定Index的行

        signFrame.deleteRow(rowIndex);

        //重新排列序号，如果没有序号，这一步省略

        for(i=rowIndex;i<signFrame.rows.length;i++){

            signFrame.rows[i].cells[0].innerHTML = i.toString();

        }

    }

    //清空列表

    function ClearAllSign(){

        if(confirm('确定要清空所有参与人吗？')){

            var signFrame = findObj("SignFrame",document);

            var rowscount = signFrame.rows.length;

            //循环删除行,从最后一行往前删除

            for(i=rowscount - 1;i > 0; i--){

               signFrame.deleteRow(i);

            }

            //重置最后行号为1

            var txtTRLastIndex = findObj("txtTRLastIndex",document);

            txtTRLastIndex.value = "1";

            //预添加一行

            AddSignRow();

        }

    }

</script>

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