js 导出 exce l表格 解决 无后缀 命名不对 ， 目前 ie不兼容，火狐谷歌兼容

导出

js代码
var idTmr;
function getExplorer() {
    var explorer = window.navigator.userAgent;
    //ie
    if (explorer.indexOf("MSIE") >= 0) {
        return 'ie';
    }
    //firefox
    else if (explorer.indexOf("Firefox") >= 0) {
        return 'Firefox';
    }
    //Chrome
    else if (explorer.indexOf("Chrome") >= 0) {
        return 'Chrome';
    }
    //Opera
    else if (explorer.indexOf("Opera") >= 0) {
        return 'Opera';
    }
    //Safari
    else if (explorer.indexOf("Safari") >= 0) {
        return 'Safari';
    }
}
function method1(tableid) {//整个表格拷贝到EXCEL中
    if (getExplorer() == 'ie') {
        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(1);
        //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

        try {
            var fname = oXL.Application.GetSaveAsFilename("Excel.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();", 1);

        }

    }
    else {
        tableToExcel(tableid);
    }
}
var tableToExcel = (function () {
        var uri = 'data:application/vnd.ms-excel;base64,',
            template = '{table}',
            base64 = function (s) { return window.btoa(unescape(encodeURIComponent(s))) },
            format = function (s, c) {
                return s.replace(/{(\w+)}/g,
                    function (m, p) { return c[p]; })
            }
        return function (table, name) {
            if (!table.nodeType) table = document.getElementById(table)
            var ctx = { worksheet: name || 'Worksheet', table: table.innerHTML }
           // window.location.href = uri + base64(format(template, ctx))
           
             
            document.getElementById("input").href = uri + base64(format(template, ctx));
             //处理点击  标签下载的文件，无后缀，文件名不对
            document.getElementById("input").download = "公司表格.xls";
             //模拟点击 a 标签
            simulateClick(document.getElementById("input"));
        }
    }
)();

function simulateClick(el) {
        var evt;
        if (document.createEvent) { // DOM Level 2 standard
            evt = document.createEvent("MouseEvents");
            evt.initMouseEvent("click", true, true, window,
                0, 0, 0, 0, 0, false, false, false, false, 0, null);
            el.dispatchEvent(evt);
        }
        if (el.fireEvent) {
                el.fireEvent('onclick');
        }
}

 

目前ie 无法实现，请多多指教