导出数据为Excel文件-JS

var params=‘‘;if(vahiclePlate!=‘‘){ ???params=‘lpn‘+vahiclePlate;}if(startTime!=‘‘){ ???params=params==‘‘?‘startTime=‘+startTime:(params+‘&‘)+‘startTime=‘+startTime;}.....搜索条件if(params!=‘‘){ ???params+=‘&‘+‘fileName=车队行程统计导出‘; ???params+=‘&‘+‘lpnName=车牌号‘; ???....表头 ???params+=‘&‘+‘sheetName=车队行程统计数据总汇‘; ???location.href="/etruck-portal/..../onExport?"+params;}else{ ???location.href="/etruck-portal/..../onExport";}