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js實現table添加行tr、刪除行tr、清空行tr的簡單一實例，tabletr
如下所示：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <HEAD> <TITLE> New Document </TITLE> <META NAME="Generator" CONTENT="EditPlus"> <META NAME="Author" CONTENT=""> <META NAME="Keywords" CONTENT=""> <META NAME="Description" CONTENT=""> <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; } //添加一個參與人填寫行 function AddSignRow(){ //讀取最後一行的行號，存放在txtTRLastIndex文字框中 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:序號 var newNameTD=newTR.insertCell(0); //添加列內容 newNameTD.innerHTML = newTR.rowIndex.toString(); //添加列:姓名 var newNameTD=newTR.insertCell(1); //添加列內容 newNameTD.innerHTML = "<input name='txtName" + rowID + "' id='txtName" + rowID + "' type='text' size='12' />"; //添加列:電子郵箱 var newEmailTD=newTR.insertCell(2); //添加列內容 newEmailTD.innerHTML = "<input name='txtEMail" + rowID + "' id='txtEmail" + rowID + "' type='text' size='20' />"; //添加列:電話 var newTelTD=newTR.insertCell(3); //添加列內容 newTelTD.innerHTML = "<input name='txtTel" + rowID + "' id='txtTel" + rowID + "' type='text' size='10' />"; //添加列:手機 var newMobileTD=newTR.insertCell(4); //添加列內容 newMobileTD.innerHTML = "<input name='txtMobile" + rowID + "' id='txtMobile" + rowID + "' type='text' size='12' />"; //添加列:公司名 var newCompanyTD=newTR.insertCell(5); //添加列內容 newCompanyTD.innerHTML = "<input name='txtCompany" + rowID + "' id='txtCompany" + rowID + "' type='text' size='20' />"; //添加列:刪除按鈕 var newDeleteTD=newTR.insertCell(6); //添加列內容 newDeleteTD.innerHTML = "<div align='center' style='width:40px'><a href='javascript:;' onclick=\"DeleteSignRow('SignItem" + rowID + "')\">刪除</a></div>"; //將行號推進下一行 txtTRLastIndex.value = (rowID + 1).toString() ; } //刪除指定行 function DeleteSignRow(rowid){ var signFrame = findObj("SignFrame",document); var signItem = findObj(rowid,document); alert(rowid); //擷取將要刪除的行的Index var rowIndex = signItem.rowIndex; //刪除指定Index的行 signFrame.deleteRow(rowIndex); //重新排列序號，如果沒有序號，這一步省略 for(i=rowIndex;i<signFrame.rows.length;i++){ signFrame.rows[i].cells[0].innerHTML = i.toString(); } } //清空列表 function ClearAllSign(){ if(confirm('確定要清空所有參與人嗎？')){ var signFrame = findObj("SignFrame",document); var rowscount = signFrame.rows.length; //迴圈刪除行,從最後一行往前刪除 for(i=rowscount - 1;i > 0; i--){ signFrame.deleteRow(i); } //重設最後行號為1 var txtTRLastIndex = findObj("txtTRLastIndex",document); txtTRLastIndex.value = "1"; //預添加一行 AddSignRow(); } } </script> </HEAD> <BODY> <div> <table width="613" border="0" cellpadding="2" cellspacing="1" id="SignFrame"> <tr id="trHeader"> <td width="27" bgcolor="#96E0E2">序號</td> <td width="64" bgcolor="#96E0E2">使用者姓名</td> <td width="98" bgcolor="#96E0E2">電子郵箱</td> <td width="92" bgcolor="#96E0E2">固定電話</td> <td width="86" bgcolor="#96E0E2">移動手機</td> <td width="153" bgcolor="#96E0E2">公司名稱</td> <td width="57" align="center" bgcolor="#96E0E2"> </td> </tr> </table> </div> <div> <input type="button" name="Submit" value="添加參與人" onclick="AddSignRow()" /> <input type="button" name="Submit2" value="清空" onclick="ClearAllSign()" /> <input name='txtTRLastIndex' type='hidden' id='txtTRLastIndex' value="1" /> </div> </BODY> </HTML>
刪除行 用下面的方法比較好……
<html> <head> <title>1</title> <script> //得到行對象 function getRowObj(obj) { var i = 0; while(obj.tagName.toLowerCase() != "tr"){ obj = obj.parentNode; if(obj.tagName.toLowerCase() == "table")return null; } return obj; } //根據得到的行對象得到所在的行數 function getRowNo(obj){ var trObj = getRowObj(obj); var trArr = trObj.parentNode.children; for(var trNo= 0; trNo < trArr.length; trNo++){ if(trObj == trObj.parentNode.children[trNo]){ alert(trNo+1); } } } //刪除行 function delRow(obj){ var tr = this.getRowObj(obj); if(tr != null){ tr.parentNode.removeChild(tr); }else{ throw new Error("the given object is not contained by the table"); } } </script> </head> <body> <table border = "1"> <tr> <td>A<input type="button" value="A" onclick="getRowNo(this)">getRowNo<td> </tr> <tr> <td>B<input type="button" value="B" onclick="delRow(this)">delRow<td> </tr> <tr> <td>C<input type="button" value="C" onclick="getRowNo(this)">getRowNo</td> </tr> <tr> <td>D<input type="button" value="D" onclick="getRowNo(this)">getRowNo</td> </tr> </table> </body> <html>
以上就是小編為大家帶來的js實現table添加行tr、刪除行tr、清空行tr的簡單一實例全部內容了，希望大家多多支援幫客之家~
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