How batch modify, batch delete?

JavaScript
1 
for(var i=0;i<delNoticeIds.Count;i++) {
    var nObj = Backendless.Persistence.of(Classes.Notice).findById(delNoticeIds.Values());
    nObj.IsDel = true;
    nObj.save(new Backendless.Async(function () {
    }));
}
2

See the section “bulk update” here:

https://backendless.com/documentation/data/rest/data_updating_data_objects.htm

and “bulk delete” here:
https://backendless.com/documentation/data/rest/data_deleting_data_objects.htm

3

Thank