Using javascript and jquery, to populate related select boxes with array structure

Question

Using answers to this question, I have been able to populate a select box based on the selection of another select box. ( I posted my answer here) Pulling the data from an a

Answer 1

Thanks to the answer from @Marko Dunic, I was able to build an array (data) structure that can be referenced to populate 3 select boxes. I didn't use the implementation code only because I didn't completely understand it...it works as posted. I will come back to this code later as I learn jQuery. My code is posted below (obviously, your reference to jQuery may be different)