Not to be snarky, but JS has more bad examples of these concepts than one can count.... Having said that it is a good idea to learn about these early and keep

Not to be snarky, but JS has more bad examples of these concepts than one can count.... Having said that it is a good idea to learn about these early and keep them in mind. Sadly there isn't a good definitive list of JS' idiosyncrasy that I know of.