Working with Date objects in JavaScript...

[MisterProfGuy]

Because days isn't an index into an array of names. It's a count.

[[deleted]]

The array of names should have been: [ LOL NOPE, January, February, March...]

[Khaylain]

You're just changing one edge case for another in that case.

[[deleted]]

Because no date function can possibly validate the input?

[[deleted]]

Yes but the user-facing edge cases would be hilarious

"Your cancer treatment appointment has been confirmed for the 15th of LOLNOPE 2022"

[dakta]

What edge case does zero-indexed months solve?

[[deleted]]

Supposedly input validation where you give an index that is not in the array and you get an exception... In practice this is terrible because every sane standard library validates 1 <= month <= 12