Surprised no one mentioned this is the guy who brought us this masterpiece. If you haven’t seen it, drop everything and watch it, best 5 minutes of your day guaranteed.
Incidentally it’s also a great introduction to thinking as a functional programmer if you are used to imperative logic with state spread all over the place.
1. He calls Array(16) and then talks about there being 16 separators. Of course, there are only 15. This kinda breaks the Batman joke.
2. He writes {}+[] and claims that he's adding a list to an object, then mocks the fact that it gives a different result than []+{} which gives [object Object]. In reality, if you write ({}+[]), you also get [object Object]. I'll leave it as a puzzle for you to figure out why {}+[] is different. (Hint: Gurer vf ab bowrpg gurer.)
> {}+[]
'[object Object]'
> []+{}
'[object Object]'