The comma in that context is technically an operator, rather than a separator. ecma-international.org/ecma-262/5.1/#sec-11.14 And it is terrible. Unless you want your code to be hard to read. As you do here. So, kudos.

@Rynant Yeah, 1, 3, 6, and 9 really throw my definition off (foolish positive bias!). I'll pay more attention from here on out. Fortunately, everything but 4 is explicitly spelled out in the challenge. So the rule is consistent, but with an extra layer of complexity.

@kernigh I think it's meant to be a reflection across a horizontal axis.

The trick is actually that Math.random cares nothing for our meager parameters. It chooses numbers its own way. the |0 is correctly rounding the unexpected result, and so is not a source of any trickery.

This is delightful. Finally, a use for that terrible, terrible operator.

Wait, reading the clock doesn't count as an input? We can do that? I guess I'll exploit it after all.

@kinokijuf typeof null == typeof Math

@WallyWest Why even use Math.E when Math.PI is larger? p=Math.PI;(''+p+p+p+p).replace(/\./g,"")