'you don't have to consider things like undefined, null, NaN, negative numbers, strings and so on.'

But as the Math object has been reset you shouldnt use Math.floor in the first method Math.round

.

This does not work correctly for negative numbers.

Standard Math object: Math.floor(-1.1) === -2

This implementation: Math.floor(-1.1) === -1

nice

Great idea reusing functions

Hmm... almost the same...

I guess mine is slightly better since % works for bigger numbers...

That 'number | 0' is very clever!

|0 is good.

Learned something today! Good job.

no worries :)

Your right.
Go to sleep...

he's restored the Math.floor and reimplemented its functionality so he can use it again :)

"Math object was "accidently" reset"
then you use Math.floor ...

Hey, People, you realy think it is clever?

Super smart, nice work.

You sir have earned my respect.