ajax文件上传

uploadFileForBorrow(){
    var formData = new FormData();
    var files = $("#borrowFile");
    if (files[0].files.length>5){
        dgg.dialog.errors('移交清单上传限制为5个文件！', 2000);
        return;
    }
    for (var i = 0; i <files[0].files.length ; i++) {
        formData.append('attachment',files[0].files[i]);
    }

    var fileIds = new Array();
    if (!files[0].files.length) {
        return fileIds;
    }
    $.ajax({
        url:sysInfo.basePath+'/archives/attachement/uploadFile.do?origin=attachment_origin_type_02',
        type:'post',
        async:false,
        data:formData,
        contentType:false,
        processData:false,
        success:function(result){//从后端返回数据进行处理
            var code = result.code;
            var data = result.data;
            if (code==1){
                dgg.dialog.errors('文件上传失败！', 2000);
                fileIds.push(1);
                console.error(result.msg);
            } else {
                data.forEach(function(item,index,array){
                    fileIds.push(item.id);
                })
            }
        },
        error:function(msg){
            dgg.dialog.loading("close");
            fileIds.push(1);
        }
    });
    return fileIds;
}