WWHW: a timeout id is saved on an array

I always do silly tests to check what happens when I do something, so just wanted to share it with whoever does silly tests as well and wants to save some time.

I wanted to know what was exactly the timeout id from setTimeout and what would happen if I saved it on an array. (Wondered basically if it would go null some time, and it doesn't).

Any comment goes best to my twitter here.