js动态给table添加/删除tr的方法。
1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> 2 <HTML> 3 <HEAD> 4 <TITLE>JS动态为table添加与删除tr-www.jbxue.com-脚本学堂 </TITLE> 5 <META NAME="Generator" CONTENT="EditPlus"> 6 <META NAME="Author" CONTENT=""> 7 <META NAME="Keywords" CONTENT=""> 8 <META NAME="Description" CONTENT=""> 9 <script language="javascript">// Example: obj = findObj("image1"); 10 function findObj(theObj, theDoc) 11 { 12 var p, i, foundObj; 13 if(!theDoc) theDoc = document; 14 if( (p = theObj.indexOf("?")) > 0 && parent.frames.length) 15 { 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; 16 } 17 //添加一个参与人填写行 18 function AddSignRow(){ //读取最后一行的行号，存放在txtTRLastIndex文本框中 19 var txtTRLastIndex = findObj("txtTRLastIndex",document); 20 var rowID = parseInt(txtTRLastIndex.value); 21 var signFrame = findObj("SignFrame",document); 22 //添加行 23 var newTR = signFrame.insertRow(signFrame.rows.length); 24 newTR.id = "SignItem" + rowID; 25 //添加列:序号 26 var newNameTD=newTR.insertCell(0); 27 //添加列内容 28 newNameTD.innerHTML = newTR.rowIndex.toString(); 29 //添加列:姓名 30 var newNameTD=newTR.insertCell(1); 31 //添加列内容 32 newNameTD.innerHTML = "<input name='txtName" + rowID + "' id='txtName" + rowID + "' type='text' size='12' />"; 33 //添加列:电子邮箱 34 var newEmailTD=newTR.insertCell(2); 35 //添加列内容 36 newEmailTD.innerHTML = "<input name='txtEMail" + rowID + "' id='txtEmail" + rowID + "' type='text' size='20' />"; 37 //添加列:电话 38 var newTelTD=newTR.insertCell(3); 39 //添加列内容 40 newTelTD.innerHTML = "<input name='txtTel" + rowID + "' id='txtTel" + rowID + "' type='text' size='10' />"; 41 //添加列:手机 42 var newMobileTD=newTR.insertCell(4); 43 //添加列内容 44 newMobileTD.innerHTML = "<input name='txtMobile" + rowID + "' id='txtMobile" + rowID + "' type='text' size='12' />"; 45 46 //添加列:公司名 47 var newCompanyTD=newTR.insertCell(5); 48 //添加列内容 49 newCompanyTD.innerHTML = "<input name='txtCompany" + rowID + "' id='txtCompany" + rowID + "' type='text' size='20' />"; 50 //添加列:删除按钮 51 var newDeleteTD=newTR.insertCell(6); 52 //添加列内容 53 newDeleteTD.innerHTML = "<div align='center' style='40px'><a href='#'" + rowID + "')">删除</a></div>"; 54 //将行号推进下一行 55 txtTRLastIndex.value = (rowID + 1).toString() ; 56 } 57 //删除指定行 58 function DeleteSignRow(rowid){ 59 var signFrame = findObj("SignFrame",document); 60 var signItem = findObj(rowid,document); 61 //获取将要删除的行的Index 62 var rowIndex = signItem.rowIndex; 63 //删除指定Index的行 64 signFrame.deleteRow(rowIndex); 65 //重新排列序号，如果没有序号，这一步省略 66 for(i=rowIndex;i<signFrame.rows.length;i++){ 67 signFrame.rows[i].cells[0].innerHTML = i.toString(); 68 } 69 }//清空列表 70 function ClearAllSign(){ 71 if(confirm('确定要清空所有参与人吗？')){ 72 var signFrame = findObj("SignFrame",document); 73 var rowscount = signFrame.rows.length; 74 //循环删除行,从最后一行往前删除 75 for(i=rowscount - 1;i > 0; i--){ 76 signFrame.deleteRow(i); 77 } 78 //重置最后行号为1 79 var txtTRLastIndex = findObj("txtTRLastIndex",document); 80 txtTRLastIndex.value = "1"; 81 //预添加一行 82 AddSignRow(); 83 } 84 } 85 </script> 86 </HEAD> 87 <BODY> 88 <div> 89 <table width="613" border="0" cellpadding="2" cellspacing="1" id="SignFrame"> 90 <tr id="trHeader"> 91 <td width="27" bgcolor="#96E0E2">序号</td> 92 <td width="64" bgcolor="#96E0E2">用户姓名</td> 93 <td width="98" bgcolor="#96E0E2">电子邮箱</td> 94 <td width="92" bgcolor="#96E0E2">固定电话</td> 95 <td width="86" bgcolor="#96E0E2">移动手机</td> 96 <td width="153" bgcolor="#96E0E2">公司名称</td> 97 <td width="57" align="center" bgcolor="#96E0E2"> </td> 98 </tr> 99 </table> 100 </div> 101 <div> 102 <input type="button" name="Submit" value="添加参与人" /> 103 <input type="button" name="Submit2" value="清空" /> 104 <input name='txtTRLastIndex' type='hidden' id='txtTRLastIndex' value="1" /> 105 </div> 106 </BODY> 107 </HTML>