This has nothing to do with JS! I wish that idea would die.

https://news.ycombinator.com/item?id=18442941

It's not just about them (link, Oracle), there is terrible code all over the place. Games, business software, everything.

It has nothing to do with the language! Anyone who claims that may be part of the problem, since they don't understand the problem and concentrate on superficial things.

Also, what looks terrible may not be so. I once had to work on an in-house JS app (for internal cost reporting and control). It used two GUI frameworks - because they had started switching to another one, but then stopped the transition. Sounds bad, yes? But, I worked on the code of the company I linked above, and that "terrible" JS app was easy mode all the way!

Even if it used two GUI frameworks at once, understanding the code, adding new features, debugging, everything was still very easy and doable with just half a brain active. I never had to ask my predecessor anything either, everything was clear with one look at the code. Because everything was well isolated and modular, among other things. Making changes did not affect other places in unexpected ways (as is common in biology).

I found some enlightenment - what seems to be very bad at first glance may not actually matter nearly as much as deeper things.

Speaking from ignorance or speaking from ego or both? There's only three major players, React, Vue or Angular. Angular is batteries included. The other two have their lib ecosystem and if not you can easily wrap stuff around regular js libs. That's about it. The JS ecosystem sees many newcomers, it's only natural that some of the codebases were written poorly or that the FOTM mentality gets a lot of steam, against proper engineering principles.

Anecdotally the worst code I've ever seen was in a PHP codebase, which to me, would be the predecessor of JavaScript in this regard, bolstering many junior programmers maintaining legacy (or writing Greenfield ) systems due to cheap businesses being cheap. Anyways, thousands long LoC files, with broken indentation and newlines, interspersed JS and CSS here and there. Truly madness, but that's another story. Point is JavaScript is JavaScript, and other fields like systems and backend, mainly backend, act conceited and talk about JS as if it was the devil, when things like C++, Java, aren't necessarily known for having pretty codebases.