Getting JavaScript Running on GPUs?

I don't even know what that means. I think as I understand it reduces, it makes a subset of JavaScript that higher level JavaScript can be compiled down to so it's almost like you're minimizing your instruction set and then it becomes way easier to do more performance intensive things on that smaller instruction set. So where would you think those will be run? What are the implications of something like that? I mean, I really don't know. Like Facebook, when I was talking to them about React, they were saying that eventually they were like, yeah, I mean a moonshot goal might be to get JavaScript running on GPUs. Sure okay so I'll make an idiot out of myself.