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Yup, Javascript can go F@#! itself (lemmy.ml)

submitted 1 year ago by [email protected] to c/[email protected]

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[–] [email protected] 1 points 1 year ago* (last edited 1 year ago) (1 children)

Ok some of these I understand but what the fuck. Why.

Edit: ok I have a theory. == checks equality without casting to any types, so they're not equal. But < and > are numeric operations, so null gets cast to 0. So <= and >= cast it to 0, and it's equal to 0, so it's true.

[–] [email protected] 1 points 1 year ago* (last edited 1 year ago)

I'm not sure if you really want to know, but:

greater than, smaller than, will cast the type so it will be 0>0 which is false, ofcourse. 0>=0 is true.

Now == will first compare types, they are different types so it's false.

Also I'm a JavaScript Dev and if I ever see someone I work with use these kind of hacks I'm never working together with them again unless they apologize a lot and wash their dirty typing hands with.. acid? :-)

edit: as several people already pointed out, my answer is not accurate. The real solution was mentioned by mycus