Make JS run on every page, not just specific template

I have ‘ajaxed’ my site, and as a result, JS which is supposed to run on a certain page template does not work properly anymore. For example, when I load my site and navigate to FAQs, the Q&A’s don’t to their harmonica thing.

My guess is that I will need to edit my theme so that your (FAQ’s) JS runs on every page. I have tried editing functions.php and removing the ‘if statement’ before the JS section that relates to FAQ’s. Unfortunately, this didn’t do the trick.

Any pointers would be much appreciated!
Thanks a lot for your time ??