来自网络：这个不错，就转了收藏。
http://apps.hi.baidu.com/share/detail/30648462
html：
<!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=gb2312" />
<title>编辑表格数据</title>
<style type="text/css">
<!--
body,div,p,ul,li,font,span,td,th{
font-size:10pt;
line-height:155%;
}
table{
border-top-width: 1px;
border-right-width: 1px;
border-bottom-width: 0px;
border-left-width: 1px;
border-top-style: solid;
border-right-style: solid;
border-bottom-style: none;
border-left-style: solid;
border-top-color: #CCCCCC;
border-right-color: #CCCCCC;
border-bottom-color: #CCCCCC;
border-left-color: #CCCCCC;
}
td{
border-bottom-width: 1px;
border-bottom-style: solid;
border-bottom-color: #CCCCCC;
}
.EditCell_TextBox {
width: 90%;
border:1px solid #0099CC;
}
.EditCell_DropDownList {
width: 90%;
}
-->
</style>
</head>
<body>
<form id="form1" name="form1" method="post" action="">
<h3>可编辑的表格</h3>
<table width="698" border="0" cellpadding="0" cellspacing="0" id="tabProduct">
<tr>
<td width="32" align="center" bgcolor="#EFEFEF" Name="Num"><input type="checkbox" name="checkbox" value="checkbox" /></td>
<td width="186" bgcolor="#EFEFEF" Name="Num" EditType="TextBox">序号</td>
<td width="152" bgcolor="#EFEFEF" Name="ProductName" EditType="DropDownList" DataItems="{text:'A',value:'a'},{text:'B',value:'b'},{text:'C',value:'c'},{text:'D',value:'d'}">商品名称</td>
<td width="103" bgcolor="#EFEFEF" Name="Amount" EditType="TextBox">数量</td>
<td width="103" bgcolor="#EFEFEF" Name="Price" EditType="TextBox">单价</td>
<td width="120" bgcolor="#EFEFEF" Name="SumMoney" Expression="Amount*Price" Format="#,###.00">合计</td>
</tr>
<tr>
<td align="center" bgcolor="#FFFFFF"><input type="checkbox" name="checkbox2" value="checkbox" /></td>
<td bgcolor="#FFFFFF">1</td>
<td bgcolor="#FFFFFF" Value="c">C</td>
<td bgcolor="#FFFFFF">0</td>
<td bgcolor="#FFFFFF">0</td>
<td bgcolor="#FFFFFF">0</td>
</tr>
<tr>
<td align="center" bgcolor="#FFFFFF"><input type="checkbox" name="checkbox22" value="checkbox" /></td>
<td bgcolor="#FFFFFF">2</td>
<td bgcolor="#FFFFFF" Value="d">D</td>
<td bgcolor="#FFFFFF">0</td>
<td bgcolor="#FFFFFF">0</td>
<td bgcolor="#FFFFFF">0</td>
</tr>
</table>
<br />
<input type="button" name="Submit" value="新增" onclick="AddRow(document.getElementById('tabProduct'),1)" />
<input type="button" name="Submit2" value="删除" onclick="DeleteRow(document.getElementById('tabProduct'),1)" />
<input type="button" name="Submit22" value="重置" onclick="window.location.reload()" />
<input type="submit" name="Submit3" value="提交" onclick="GetTableData(document.getElementById('tabProduct'));return false;" />
</form>
<script language="javascript" src="GridEdit.js"></script>
<script language="javascript">
var tabProduct = document.getElementById("tabProduct");
// 设置表格可编辑
// 可一次设置多个，例如：EditTables(tb1,tb2,tb2,......)
EditTables(tabProduct);
</script>
</body>
</html>
GridEdit.js js代码
/**
* JS实现可编辑的表格
* 用法:EditTables(tb1,tb2,tb2,......);
* Created at 2011-10-11
**/
//设置多个表格可编辑
function EditTables(){
for(var i=0;i<arguments.length;i++){
SetTableCanEdit(arguments[i]);
}
}
//设置表格是可编辑的
function SetTableCanEdit(table){
for(var i=1; i<table.rows.length;i++){
SetRowCanEdit(table.rows[i]);
}
}
function SetRowCanEdit(row){
for(var j=0;j<row.cells.length; j++){
//如果当前单元格指定了编辑类型，则表示允许编辑
var editType = row.cells[j].getAttribute("EditType");
if(!editType){
//如果当前单元格没有指定，则查看当前列是否指定
editType = row.parentNode.rows[0].cells[j].getAttribute("EditType");
}
if(editType){
row.cells[j].onclick = function (){
EditCell(this);
}
}
}
}
//设置指定单元格可编辑
function EditCell(element, editType){
var editType = element.getAttribute("EditType");
if(!editType){
//如果当前单元格没有指定，则查看当前列是否指定
editType = element.parentNode.parentNode.rows[0].cells[element.cellIndex].getAttribute("EditType");
}
switch(editType){
case "TextBox":
CreateTextBox(element, element.innerHTML);
break;
case "DropDownList":
CreateDropDownList(element);
break;
default:
break;
}
}
//为单元格创建可编辑输入框
function CreateTextBox(element, value){
//检查编辑状态，如果已经是编辑状态，跳过
var editState = element.getAttribute("EditState");
if(editState != "true"){
//创建文本框
var textBox = document.createElement("INPUT");
textBox.type = "text";
textBox.className="EditCell_TextBox";
//设置文本框当前值
if(!value){
value = element.getAttribute("Value");
}
textBox.value = value;
//设置文本框的失去焦点事件
textBox.onblur = function (){
CancelEditCell(this.parentNode, this.value);
}
//向当前单元格添加文本框
ClearChild(element);
element.appendChild(textBox);
textBox.focus();
textBox.select();
//改变状态变量
element.setAttribute("EditState", "true");
element.parentNode.parentNode.setAttribute("CurrentRow", element.parentNode.rowIndex);
}
}
//为单元格创建选择框
function CreateDropDownList(element, value){
//检查编辑状态，如果已经是编辑状态，跳过
var editState = element.getAttribute("EditState");
if(editState != "true"){
//创建下接框
var downList = document.createElement("Select");
downList.className="EditCell_DropDownList";
//添加列表项
var items = element.getAttribute("DataItems");
if(!items){
items = element.parentNode.parentNode.rows[0].cells[element.cellIndex].getAttribute("DataItems");
}
if(items){
items = eval("[" + items + "]");
for(var i=0; i<items.length; i++){
var oOption = document.createElement("OPTION");
oOption.text = items[i].text;
oOption.value = items[i].value;
downList.options.add(oOption);
}
}
//设置列表当前值
if(!value){
value = element.getAttribute("Value");
}
downList.value = value;
//设置创建下接框的失去焦点事件
downList.onblur = function (){
CancelEditCell(this.parentNode, this.value, this.options[this.selectedIndex].text);
}
//向当前单元格添加创建下接框
ClearChild(element);
element.appendChild(downList);
downList.focus();
//记录状态的改变
element.setAttribute("EditState", "true");
element.parentNode.parentNode.setAttribute("LastEditRow", element.parentNode.rowIndex);
}
}
//取消单元格编辑状态
function CancelEditCell(element, value, text){
element.setAttribute("Value", value);
if(text){
element.innerHTML = text;
}else{
element.innerHTML = value;
}
element.setAttribute("EditState", "false");
//检查是否有公式计算
CheckExpression(element.parentNode);
}
//清空指定对象的所有字节点
function ClearChild(element){
element.innerHTML = "";
}
//添加行
function AddRow(table, index){
var lastRow = table.rows[table.rows.length-1];
var newRow = lastRow.cloneNode(true);
table.tBodies[0].appendChild(newRow);
SetRowCanEdit(newRow);
return newRow;
}
//删除行
function DeleteRow(table, index){
for(var i=table.rows.length - 1; i>0;i--){
var chkOrder = table.rows[i].cells[0].firstChild;
if(chkOrder){
if(chkOrder.type = "CHECKBOX"){
if(chkOrder.checked){
//执行删除
table.deleteRow(i);
}
}
}
}
}
//提取表格的值,JSON格式
function GetTableData(table){
var tableData = new Array();
alert("行数：" + table.rows.length);
for(var i=1; i<table.rows.length;i++){
tableData.push(GetRowData(tabProduct.rows[i]));
}
return tableData;
}
//提取指定行的数据，JSON格式
function GetRowData(row){
var rowData = {};
for(var j=0;j<row.cells.length; j++){
name = row.parentNode.rows[0].cells[j].getAttribute("Name");
if(name){
var value = row.cells[j].getAttribute("Value");
if(!value){
value = row.cells[j].innerHTML;
}
rowData[name] = value;
}
}
//alert("ProductName:" + rowData.ProductName);
//或者这样：alert("ProductName:" + rowData["ProductName"]);
return rowData;
}
//检查当前数据行中需要运行的字段
function CheckExpression(row){
for(var j=0;j<row.cells.length; j++){
expn = row.parentNode.rows[0].cells[j].getAttribute("Expression");
//如指定了公式则要求计算
if(expn){
var result = Expression(row,expn);
var format = row.parentNode.rows[0].cells[j].getAttribute("Format");
if(format){
//如指定了格式，进行字值格式化
row.cells[j].innerHTML = formatNumber(Expression(row,expn), format);
}else{
row.cells[j].innerHTML = Expression(row,expn);
}
}
}
}
//计算需要运算的字段
function Expression(row, expn){
var rowData = GetRowData(row);
//循环代值计算
for(var j=0;j<row.cells.length; j++){
name = row.parentNode.rows[0].cells[j].getAttribute("Name");
if(name){
var reg = new RegExp(name, "i");
expn = expn.replace(reg, rowData[name].replace(/\,/g, ""));
}
}
return eval(expn);
}
///
/**
* 格式化数字显示方式
* 用法
* formatNumber(12345.999,'#,##0.00');
* formatNumber(12345.999,'#,##0.##');
* formatNumber(123,'000000');
* @param num
* @param pattern
*/
/* 以下是范例
formatNumber('','')=0
formatNumber(123456789012.129,null)=123456789012
formatNumber(null,null)=0
formatNumber(123456789012.129,'#,##0.00')=123,456,789,012.12
formatNumber(123456789012.129,'#,##0.##')=123,456,789,012.12
formatNumber(123456789012.129,'#0.00')=123,456,789,012.12
formatNumber(123456789012.129,'#0.##')=123,456,789,012.12
formatNumber(12.129,'0.00')=12.12
formatNumber(12.129,'0.##')=12.12
formatNumber(12,'00000')=00012
formatNumber(12,'#.##')=12
formatNumber(12,'#.00')=12.00
formatNumber(0,'#.##')=0
*/
function formatNumber(num,pattern){
var strarr = num?num.toString().split('.'):['0'];
var fmtarr = pattern?pattern.split('.'):[''];
var retstr='';
// 整数部分
var str = strarr[0];
var fmt = fmtarr[0];
var i = str.length-1;
var comma = false;
for(var f=fmt.length-1;f>=0;f--){
switch(fmt.substr(f,1)){
case '#':
if(i>=0 ) retstr = str.substr(i--,1) + retstr;
break;
case '0':
if(i>=0) retstr = str.substr(i--,1) + retstr;
else retstr = '0' + retstr;
break;
case ',':
comma = true;
retstr=','+retstr;
break;
}
}
if(i>=0){
if(comma){
var l = str.length;
for(;i>=0;i--){
retstr = str.substr(i,1) + retstr;
if(i>0 && ((l-i)%3)==0) retstr = ',' + retstr;
}
}
else retstr = str.substr(0,i+1) + retstr;
}
retstr = retstr+'.';
// 处理小数部分
str=strarr.length>1?strarr[1]:'';
fmt=fmtarr.length>1?fmtarr[1]:'';
i=0;
for(var f=0;f<fmt.length;f++){
switch(fmt.substr(f,1)){
case '#':
if(i<str.length) retstr+=str.substr(i++,1);
break;
case '0':
if(i<str.length) retstr+= str.substr(i++,1);
else retstr+='0';
break;
}
}
return retstr.replace(/^,+/,'').replace(/\.$/,'');
}
