//导出excel
function toExcel(bookname,targetControlerID) {
    //window.location.href=‘<%=basePath%>pmb/excelShowInfo.do‘;
    //获取表格
    try {
        var exportFileContent = document.getElementById(targetControlerID).outerHTML;
    } catch (e) {
        alert("请查询后再点击导出！");
        return;
    }

    //设置格式为Excel，表格内容通过btoa转化为base64，此方法只在文件较小时使用(小于1M)
    //exportFileContent=window.btoa(unescape(encodeURIComponent(exportFileContent)));
    //var link = "data:"+MIMEType+";base64," + exportFileContent;
    //使用Blob
    var blob = new Blob([exportFileContent], { type: "text/plain;charset=utf-8" });         //解决中文乱码问题
    blob = new Blob([String.fromCharCode(0xFEFF), blob], { type: blob.type });
    if ("msSaveOrOpenBlob" in navigator) {
        //兼容ie
        window.navigator.msSaveOrOpenBlob(blob, bookname);
        return;
    }
    //设置链接
    var link = window.URL.createObjectURL(blob);
    var a = document.createElement("a");    //创建a标签
    a.download = bookname;  //设置被下载的超链接目标（文件名）
    a.href = link;                            //设置a标签的链接
    document.body.appendChild(a);            //a标签添加到页面
    a.click();                                //设置a标签触发单击事件
    document.body.removeChild(a);            //移除a标签
}