Guild Wars 2

So I’m playing around with the API and learning JavaScript, and so far I like how Dyanarose’s API looks on https://github.com/dyanarose/gw2Api.js/tree/master

Since I’m learning, I appreciate it’s probably super obvious, but I’m getting confused on how to use it and get it to fetch the data from the game?

There’s a playground on the github site, i,e. http://dyanarose.github.io/gw2Api.js/ which lets you input values for the endpoints and then see a JSON output at the url destination, but for the life of me I can’t figure out how this is implemented in JS :p

any help would be awesome!

thanks!