I have been using JS for almost 10 years, and have written quite a few big apps with it, both front- and back-end, but only a handful of times have I experience

I have been using JS for almost 10 years, and have written quite a few big apps with it, both front- and back-end, but only a handful of times have I experienced this “weird” issues. Nobody writes code like that, I only know of these things because there have been many websites like this over the years.