Just put in your code console.log(message) where message is text or an object of some kind.

How do you do a console.log? I can't seem to figure it out

There are 4 hard-coded tests, and then 100 randomly-generated tests; are you talking about that second set? The same rules apply to all the tests, of course. So if you want, you could console.log out the input, and your output, and then look at the ones that don't pass and figure out what the problem is.