导出EXCEL一般是用PHP做，但是项目中，有时候PHP后端工程师返回的数据不是我们想要的，作为前端开发工程师，把对应的数据编号转换为文字后，展示给用户，但是，需求要把数据同时导出一份EXCEl。无奈之下，我只能用js导出table中的数据了。
导出EXCEl一般是自己人用的，所以用js导出，因为js导出EXCEL一般情况下兼容性不是很好，很多只是兼容IE浏览器，还要设置在工具栏中进行设置才能导出，因为会相对比较烦。下面介绍几种方法：
一、js导出EXCEl带单元格合并【已验证，比较好用】
// JavaScript Document
//调用方法
// var test=new PageToExcel("data",0,255,"测试.xls");//table id , 第几行开始，最后一行颜色 ，保存的文件名
// test.CreateExcel(false);
// test.Exec();
// test.SaveAs();
// test.CloseExcel();
//LastRowColor 0黑色 255红色
//
function PageToExcel(TableID,FirstRow,LastRowColor,SaveAsName){
this.lastRowColor=LastRowColor==""?0:LastRowColor;
var today=new Date();
this.saveAsName=(SaveAsName==""?today.getYear()+"年"+(today.getMonth()+1)+"月"+today.getDate()+"日.xls":SaveAsName);
this.tableId=TableID;
this.table=document.getElementById(this.tableId);//导出的table 对象
this.rows=this.table.rows.length;//导出的table总行数
this.colSumCols=this.table.rows[0].cells.length;//第一行总列数
this.fromrow=FirstRow;
this.beginCol=0; //起始列数
this.cols=this.colSumCols;
this.oXL=null;
this.oWB=null;
this.oSheet=null;
this.rowSpans=1; //行合并
this.colSpans=1; //列合并
this.colsName={0:"A",1:"B", 2:"C", 3:"D", 4:"E", 5:"F", 6:"G", 7:"H", 8:"I",9:"J", 10:"K", 11:"L", 12:"M", 13:"N", 14:"O", 15:"P", 16:"Q", 16:"R" ,18:"S", 19:"T", 20:"U", 21:"V", 22:"W", 23:"X", 24:"Y", 25:"Z"};
}
PageToExcel.prototype.DeleteExcelCols=function(NotShowColList){//数组NotShowColList
//this.notShowColList=NotShowColList;//不显示列集合,1,2,3,1
//删除excel中的列
var m=0;
for(var i=0;i<NotShowColList.length;i++){
if(i>0){
m++;
}
var temp=NotShowColList[i]- m;
var index=this.colsName[temp];
this.oSheet.Columns(index).Delete;//删除
}
m=0;
}
PageToExcel.prototype.CreateExcel=function(ExcelVisible)
{
try{
this.oXL = new ActiveXObject("Excel.Application"); //创建应该对象
this.oXL.Visible = ExcelVisible;
this.oWB = this.oXL .Workbooks.Add();//新建一个Excel工作簿
this.oSheet = this.oWB.ActiveSheet;//指定要写入内容的工作表为活动工作表
//不显示网格线
this.oXL.ActiveWindow.DisplayGridlines=false;
}catch(e){
alert("请确认安装了非绿色版本的excel！"+e.description);
CloseExcel();
}
}
PageToExcel.prototype.CloseExcel=function()
{
this.oXL.DisplayAlerts = false;
this.oXL.Quit();
this.oXL = null;
this.oWB=null;
this.oSheet=null;
}
PageToExcel.prototype.ChangeElementToLabel=function (ElementObj){
var GetText="";
try{
var childres=ElementObj.childNodes;
}catch(e){ return GetText}
if(childres.length<=0) return GetText;
for(var i=0;i<childres.length;i++){
try{if(childres[i].style.display=="none"||childres[i].type.toLowerCase()=="hidden"){continue;}}
catch(e){}
try{
switch (childres[i].nodeName.toLowerCase()){
case "#text" :
GetText +=childres[i].nodeValue ;
break;
case "br" :
GetText +="\n";
break;
case "img" :
GetText +="";
break;
case "select" :
GetText +=childres[i].options[childres[i].selectedIndex].innerText ;
break;
case "input" :
if(childres[i].type.toLowerCase()=="submit"||childres[i].type.toLowerCase()=="button"){
GetText +="";
}else if(childres[i].type.toLowerCase()=="textarea"){
GetText +=childres[i].innerText;
}else{
GetText +=childres[i].value;
}
break;
default :
GetText += this.ChangeElementToLabel(childres[i]);
break;
}
}catch(e){}
}
return GetText;
}
PageToExcel.prototype.SaveAs=function (){
//保存
try{
this.oXL.Visible =true;
var fname = this.oXL.Application.GetSaveAsFilename(this.saveAsName, "Excel Spreadsheets (*.xls), *.xls");
if(fname){
this.oWB.SaveAs(fname);
this.oXL.Visible =false;
}
}catch(e){};
}
PageToExcel.prototype.Exec=function()
{
//寻找列数，考虑到第一行可能存在
for (var i=0; i<this.colSumCols;i++) {
var tmpcolspan = this.table.rows(0).cells(i).colSpan;
if ( tmpcolspan>1 ) {
this.cols += tmpcolspan-1;
}
}
//定义2维容器数据，1：行；2：列；值（0 可以填充，1 已被填充）
var container=new Array(this.rows);
for (var i=0;i<this.rows;i++) {
container[i]=new Array(this.cols);
for (j=0;j<this.cols;j++) {
container[i][j]=0;
}
}
//将所有单元置为文本，避免非数字列被自动变成科学计数法和丢失前缀的0
this.oSheet.Range(this.oSheet.Cells(this.fromrow+1,1), this.oSheet.Cells(this.fromrow+this.rows,this.cols)).NumberFormat = "@";
// 循环行
for (i=0;i<this.rows;i++){
//循环列
for (j=0;j<this.cols;j++){
//寻找开始列
for (k=j;k<this.cols;k++){
if (container[i][k]==0) {
this.beginCol=k;
k=this.cols; //退出循环
}
}
//try{
//赋值
//此处相应跟改 根据 标签的类型，替换相关参数
this.oSheet.Cells(i+1+this.fromrow,this.beginCol+1).value = this.ChangeElementToLabel(this.table.rows(i).cells(j));
//计算合并列
try{
this.colSpans = this.table.rows(i).cells(j).colSpan;
}catch(e){
this.colSpans=0
}
if (this.colSpans>1) {
//合并
this.oSheet.Range(this.oSheet.Cells(i+1+this.fromrow,this.beginCol+1),this.oSheet.Cells(i+1+this.fromrow,this.beginCol+this.colSpans)).Merge();
}
//将当前table位置填写到对应的容器中
for (k=0; k<this.colSpans;k++) {
container[i][this.beginCol+k]= 1;
}
// 计算合并行
try{
this.rowSpans = this.table.rows(i).cells(j).rowSpan;
}catch(e){
this.rowSpans = 0;
}
if (this.rowSpans>1) { //行合并
this.oSheet.Range(this.oSheet.Cells(i+1+this.fromrow,this.beginCol+1),this.oSheet.Cells(i+this.rowSpans+this.fromrow,this.beginCol+this.colSpans)).Merge();
//将当前table位置填写到对应的容器中
for (k=1; k<this.rowSpans;k++) { //由于第0行已经被colSpans对应的代码填充了，故这里从第1行开始
for (l=0;l<this.colSpans;l++) {
container[i+k][this.beginCol+l]=1;
}
}
}
//如果开始列＋合并列已经等于列数了，故不需要再循环html table
if (this.beginCol+this.colSpans>=this.cols) j=this.cols;
}
if(i==0)
{
//标题栏
this.oSheet.Range(this.oSheet.Cells(1,1), this.oSheet.Cells(1,1)).Font.Size=20;
this.oSheet.Range(this.oSheet.Cells(1,1), this.oSheet.Cells(1,1)).Font.Bold = true;
this.oSheet.Range(this.oSheet.Cells(1,1), this.oSheet.Cells(1,1)).HorizontalAlignment = -4108; //居中
this.oSheet.Range(this.oSheet.Cells(1,1), this.oSheet.Cells(1,1)).Rows.RowHeight = 40;
}
//自动调整行高
}
//最后一行是否空色
try{
this.oSheet.Range(this.oSheet.Cells(this.rows,1), this.oSheet.Cells(this.rows,1)).Font.Color=this.lastRowColor;
}catch(e){}
this.oSheet.Range(this.oSheet.Cells(this.fromrow+2,1), this.oSheet.Cells(this.fromrow+this.rows,this.cols)).Rows.RowHeight=20;
this.oSheet.Range(this.oSheet.Cells(this.fromrow+2,1), this.oSheet.Cells(this.fromrow+this.rows,this.cols)).Font.Size=10;
//自动换行
this.oSheet.Range(this.oSheet.Cells(this.fromrow+2,1), this.oSheet.Cells(this.fromrow+this.rows,this.cols)).WrapText = true;
//自动调整列宽
this.oSheet.Range(this.oSheet.Cells(this.fromrow+1,1), this.oSheet.Cells(this.fromrow+this.rows,this.cols)).Columns.AutoFit();
//点虚线
this.oSheet.Range(this.oSheet.Cells(this.fromrow+1,1), this.oSheet.Cells(this.fromrow+this.rows,this.cols)).Borders.LineStyle = -4118;
return this.rows;
}
注意：要改IE浏览器安全设置
二、js导出table中的EXCEL.该方法只能在IE内核下运行，相比其他方法的好处是，不
用再设置什么属性或者安装什么插件了，思路如下：
function getXlsFromTbl(inTblId, inWindow) {
try {
var allStr = "";
var curStr = "";
//alert("getXlsFromTbl");
if (inTblId != null && inTblId != "" && inTblId != "null") {
curStr = getTblData(inTblId, inWindow);
}
if (curStr != null) {
allStr += curStr;
}
else {
alert("你要导出的表不存在！");
return;
}
var fileName = getExcelFileName();
doFileExport(fileName, allStr);
}
catch(e) {
alert("导出发生异常:" + e.name + "->" + e.description + "!");
}
}
function getTblData(inTbl, inWindow) {
var rows = 0;
//alert("getTblData is " + inWindow);
var tblDocument = document;
if (!!inWindow && inWindow != "") {
if (!document.all(inWindow)) {
return null;
}
else {
tblDocument = eval(inWindow).document;
}
}
var curTbl = tblDocument.getElementById(inTbl);
var outStr = "";
if (curTbl != null) {
for (var j = 0; j < curTbl.rows.length; j++) {
for (var i = 0; i < curTbl.rows[j].cells.length; i++) {
if (i == 0 && rows > 0) {
outStr += " \t";
rows -= 1;
}
outStr += curTbl.rows[j].cells[i].innerText + "\t";
if (curTbl.rows[j].cells[i].colSpan > 1) {
for (var k = 0; k < curTbl.rows[j].cells[i].colSpan - 1; k++) {
outStr += " \t";
}
}
if (i == 0) {
if (rows == 0 && curTbl.rows[j].cells[i].rowSpan > 1) {
rows = curTbl.rows[j].cells[i].rowSpan - 1;
}
}
}
outStr += "\r\n";
}
}
else {
outStr = null;
alert(inTbl + "不存在!");
}
return outStr;
}
function getExcelFileName() {
var d = new Date();
var curYear = d.getYear();
var curMonth = "" + (d.getMonth() + 1);
var curDate = "" + d.getDate();
var curHour = "" + d.getHours();
var curMinute = "" + d.getMinutes();
var curSecond = "" + d.getSeconds();
if (curMonth.length == 1) {
curMonth = "0" + curMonth;
}
if (curDate.length == 1) {
curDate = "0" + curDate;
}
if (curHour.length == 1) {
curHour = "0" + curHour;
}
if (curMinute.length == 1) {
curMinute = "0" + curMinute;
}
if (curSecond.length == 1) {
curSecond = "0" + curSecond;
}
var fileName = "91zaojia" + "_" + curYear + curMonth + curDate + "_"
+ curHour + curMinute + curSecond + ".xls";
return fileName;
}
function doFileExport(inName, inStr) {
var xlsWin = null;
if (!!document.all("glbHideFrm")) {
xlsWin = glbHideFrm;
}
else {
var width = 6;
var height = 4;
var openPara = "left=" + (window.screen.width / 2 - width / 2)
+ ",top=" + (window.screen.height / 2 - height / 2)
+ ",scrollbars=no,width=" + width + ",height=" + height;
xlsWin = window.open("", "_blank", openPara);
}
xlsWin.document.write(inStr);
xlsWin.document.close();
xlsWin.document.execCommand('Saveas', true, inName);
xlsWin.close();
}
改代码已经验证，可以使用。调用很简单，直接用就可以
onclick="getXlsFromTbl(‘functionclickExcel‘,null);就可以了！