js导出execl

  var idTmr;
        function ExportExcel(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 xlsheet = oWB.Worksheets();
            //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
            xlsheet.Paste();
            //粘贴到活动的EXCEL中
            oXL.Visible = true;
            //设置excel可见属性
            var today = new Date();
            var year = today.getFullYear();
            var month = today.getMonth() + ;
            var day = today.getDate();

            var h = today.getHours();
            var m = today.getMinutes();
            var s = today.getSeconds();
            var curentDate = year + "-" + month + "-" + day + " " + h + ":" + m + ":" + s

            try {
                var fname = oXL.Application.GetSaveAsFilename(curentDate+".xls", "Excel Spreadsheets (*.xls), *.xls");
            } catch (e) {
                print("Nested catch caught " + e);
            } finally {
                oWB.SaveAs(fname);

                oWB.Close(savechanges = false);
                //xls.visible = false;
                oXL.Quit();
                oXL = null;
                //结束excel进程，退出完成
                //window.setInterval("Cleanup();",1);
                idTmr = window.setInterval("Cleanup();", );

            }
        }
        function Cleanup() {
            window.clearInterval(idTmr);
            CollectGarbage();
        }