this post was submitted on 11 Jul 2025
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Programming
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I am a frontend dev. JavaScript (well, TypeScript) is my bread and butter. Even knowing its quirks I never would have thought how inconsistent
Dateactually is. I encourage everyone to try this quiz.This is what JavaScript haters should bring forth, not
0.1 + 0.2 !== 0.3!There is a reason almost everyone use some Date lib, like Luxon and not the built in. And well, having a horrible built in lib that they can't change due to legacy code breaking is nothing really new or unique to JS.
The built-in lib is fine for basic stuff unless you do some crazy shit like expecting
"2"to parse as a valid date.For very basic things maybe, but it has a lot of other weird problems and restrictions. Mutability, no real timezone support, very limited arithmetic, to name a few. As soon as you move beyond the very basic, you want someting more robust.