4 ms·

I'm guessing you mean “no parallelism”, right? Because JavaScript has (admittedly horrible) concurrency support. Otherwise what's this “callback hell” some peop

• falafel 9y ago
  Callback hell? What is this 2010? Callback hell is a non-issue in modern JS code with promises, and async/await.
  • catnaroek 9y ago
    Promises don't eliminate callback hell any more than objects eliminate their underlying data structures.
• charlysl 9y ago
  By concurrency I mean expressing in the language that a computation or operation is independent, for instance by putting it in a thread or making it lazy, and all the programming techniques that this enables: active objects, order finding (which plays very well with paralellism btw), etc. Parallelism I see as a hardware feature that can make programs faster. I thought about the "callback hell", this is a bit more like coroutines, a quite limited form of concurrency (like non-preemptive threads). In this sense Js is very limited in what programming techniques can be taught.