this post was submitted on 16 Jun 2023
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Programmer Humor

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[–] TwilightKiddy@programming.dev 1 points 1 year ago* (last edited 1 year ago) (1 children)

This one is one of my favourite JS quirks:

JS quirk

[–] LeFrog@discuss.tchncs.de 0 points 1 year ago (1 children)
[–] usernamesAreTricky@lemmy.ml 1 points 1 year ago

parseInt is meant for strings so it converts the number there into a string. Once the numbers get small enough it starts representing it with scientific notation. So 0.0000001 converts into "1e-7" where it then starts to ignore the e-7 part because that's not a valid int, so it is left with 1

https://javascript.plainenglish.io/why-parseint-0-0000001-0-8fe1aec15d8b