[Help Needed] Javascript Team Finder

[Mr_Moko]

Greetings Chief Delphi members!
I'm from from FRC 2729 Storm Robotics and I was wondering if someone could help with an issue that we're having with our Team Number Finder in JavaScript.
We can get one page of team numbers (500 numbers) off of any given page using The Blue Alliance api due to the fact that the HTTP request only executes on the last iteration of the for loop. The problem we are having is that when we try to get more than one page, the values become undefined.
If someone could look through the code and lend us a hand, that would be wonderful!

HTML
JavaScript

Thanks in advance for any help that is given!