How to use jQuery in

I was on the second back end challenge, but I am unable to make ajax calls to a API.
Maybe its because I don’t know how to include jQuery .
I have tried using the script tag in the HTML file but its not working.

Link to project?

Junk textPost must be at least 20 characters

Here you go.

It looks like you’re trying to use three different versions of jQuery (1.9.0, 2.2.1, and 3.2.1), so it’s possible that’s causing some problems. I’d recommend using 3.2.1 unless you have any specific reasons to use an earlier version.

[Edit: Irrelevant info]

Unfortunately, the live version of your page keeps giving me 504 gateway timeout errors, I can only view your source code, so it’s difficult to see exactly what’s going on when it runs.