[mabster]

I don't code in JS very often, so there's that.

Both sets of code were fine, but I understood the loop variant instantly, while it took me a bit longer with the FP code.

As a side note: The only real JS I did was optimising some performance critical code, and I did have to refactor a number of FP chains back to loops. This was because the FP way keeps constructing a new list for each step which was slow.