Firefox has dark mode.

Ohhhh, so there isn’t anything crazy going on here.

It’s just literally running that function and tallying up how accurate it is as a prime number checker.

…and it gets more accurate the longer it runs. Okay, I see now. Thanks, lol.

I don’t get it. Can someone Explain Like I’m 5?

There is a function that always returns false, and then a bunch of random output, and one failed?

Is this like another weird quirk in the JavaScript VM or something? Lol?

Same, typed all of the countries I could think of and then noped out.