How to install a script written in js?

Question

JavaScript

I welcome everyone!
There is a script written in js (probably)
https://github.com/vgoskins/vgocrush here
The question is how to install it on hosting! Haven't dealt with this before!
I'm not asking you to write instructions, just point me on the right path in a nutshell!
Thanks to

Answer 1

Upload the necessary files via ftp, add links to them in the template - in the header. Fix links in css if paths to images have changed

Answer 2

To connect, find the script you need and connect it in the html file like this
<script src="путь js файла"></script>