Fetch data from website with javascript

I've been trying to fetch the data from "http://builds.reicast.com/" but the issue is the website is also fetching information (which is what I actually need; the Master dev-build URLs). I feel like the delay in loading the Javascript fetching is hindering the fetching process on my side. Also, I've tried several different ways of fetching the build-URL's but they never appear (I'm assuming it's the same issue as mentioned previously).
This is what it looks like:

[CODE REMOVED]

This is what it looks like:
prtscn.png

How can I get it to load the "master dev-builds section"?
Thanks for your time!