This is one is fine, I'll give you that.

Do more of this and less of that octave garbage.

Thanks, I've actually worked quite a lot with JavaScript, but for web and api development so I never came across this "misuse".
Will give other code golf katas a try and then come back to this.

Understanding some of the tricks used in regular code golf kata without the alpha-numeric restriction will definitely be a good place to start. It'll help you understand a little bit about how JavaScript can be abused and misused to make code shorter. My first Code Golf kata I did was the twelve days of christmas and it took me a lot more time and googling than I'd like to admit to figure it out.

Honestly? Get to be less new. Program in JS for a while, read up on it ( you would have encountered _ as a valid name at some point ), learn - and come back later.

I'm new to this, I've been trying it for a while and have no idea (I didn't even know I could use _ as a variable).

I don't wanna look at the solutions, anything that could lead me to solve it?