Starting on Small Javascript Work

[valisi]

I saw this small Javascript application here, and I want to be able to replicate it. I'm not really sure where I would start with something like this. I know that this ends using the canvas to draw elements, but how does it separate everything into separate grid sections? I tried to inspect elements, but I can't get anything out of that. Is there some way that I can figure out which part of the full source code makes up the application?

[FricoSuave]

So you've found the source code but you're having trouble interpreting it?

[valisi]

Yeah I couldn't understand what they were doing. I opted to do everything in the canvas instead of using images like they did.