I am trying to understand how this website works, It's a short link website. After clicking on all the check buttons a button comes at the end named Get Download link. It has a x-onclick property not onclick and The function which is attached to it is changeLink(). But When I am trying to go to the console and search for this function, nothing comes. I tried to search a lot but didn't got anything. I think it's making requests to its server somehow without letting me know. This is the link: URL. And this is the screenshot of the button.

on clicking the button it opens a new tab with the download URL (In this case it's streamtape). I tried to check network tab but it also doesn't have anything. I would love if I can get some help! :)