Javascript导出Excel的方法

<SCRIPT LANGUAGE="javascript"> 
 function method1(tableid) {//整个表格拷贝到EXCEL中 
     var curTbl = document.getElementById(tableid); 
     var oXL = new ActiveXObject("Excel.Application"); 
     //创建AX对象excel 
     var oWB = oXL.Workbooks.Add(); 
     //获取workbook对象 
         var oSheet = oWB.ActiveSheet; 
     //激活当前sheet 
     var sel = document.body.createTextRange(); 
     sel.moveToElementText(curTbl); 
     //把表格中的内容移到TextRange中 
     sel.select(); 
     //全选TextRange中内容 
     sel.execCommand("Copy"); 
     //复制TextRange中内容  
     oSheet.Paste(); 
     //粘贴到活动的EXCEL中       
     oXL.Visible = true; 
     //设置excel可见属性 
 } 
 function method2(tableid) //读取表格中每个单元到EXCEL中 
 { 
     var curTbl = document.getElementById(tableid); 
     var oXL = new ActiveXObject("Excel.Application"); 
     //创建AX对象excel 
     var oWB = oXL.Workbooks.Add(); 
     //获取workbook对象 
     var oSheet = oWB.ActiveSheet; 
     //激活当前sheet 
     var Lenr = curTbl.rows.length; 
     //取得表格行数 
     for (i = 0; i < Lenr; i++) 
     { 
         var Lenc = curTbl.rows(i).cells.length; 
         //取得每行的列数 
         for (j = 0; j < Lenc; j++) 
         { 
             oSheet.Cells(i + 1, j + 1).value = curTbl.rows(i).cells(j).innerText; 
             //赋值 
         } 
     } 
     oXL.Visible = true; 
     //设置excel可见属性 
 } 
 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++) { 
            //alert("j is " + j); 
            for (var i = 0; i < curTbl.rows[j].cells.length; i++) { 
                //alert("i is " + 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 = "leo_zhang" + "_" + curYear + curMonth + curDate + "_" 
            + curHour + curMinute + curSecond + ".csv"; 
    //alert(fileName); 
    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(); 
} 
</SCRIPT> 

<input type="button" onclick="javascript:method1('tableExcel');" value="第一种方法导入到EXCEL"> 
<input type="button" onclick="javascript:method2('tableExcel');" value="第二种方法导入到EXCEL"> 
<input type="button" onclick="javascript:getXlsFromTbl('tableExcel',null);" value="第三种方法导入到EXCEL"> 

<table id="tableExcel" width="100%" border="1" cellspacing="0" cellpadding="0"> 
<tr>.....

说明第二种方法最好

转自：http://blog.csdn.net/21aspnet/article/details/7096052