How do I streamline the events for loading files with AJAX

I am loading the levels through AJAX. Works well.

I wanted to streamline the events from manually have like 100 event lines like below

AJAX - On Level1 Completed --> Levelarray bla bla

AJAX - On Level2 Completed --> Levelarray bla bla

..repeat until all levels has been done..

At first I thought why not make a loop and insert loopindex for the current level.. But then nope, the AJAX is triggered and can't be in loop. Ok of course.

How would you streamline it?

Thanks.