JS: Truthiness of Integer Arrays

[ramadis]

Hey! The issue you are seeing there with [0] is not an issue at all. The behaviour is completley normal if you embrace JS coercion (implicit casting) in == operator.

the issue is that in the expression [0] == false, false is actually coerced to a Number by the built-in object Number, and of course: Number(false) is 0!
Then, [0] is first coerced to the String "0" and finally coerced to the Number 0.
So, the last comparision is actually 0 === 0. Which is obviously true.

Hope the explanation shed some light on the subject!

[jbranchaud]

Thanks for walking through the coercion rules. This makes more sense now. I don't think I can embrace JS coercion rules though 😉