6 ms·

It is. Sounds like a big waste of performance to me.

• robhawkes 14y ago
  You'd be surprised at how well JavaScript performs when allowed.
  • tsahyt 14y ago
    Probably. I haven't witnessed that yet though.
  • praptak 14y ago
    The scary part of JavaScript is not performance, it is the hell of inconsistency. '1' - 0 is 1. Guess what '1' + 0 is? Nope, it's '10'. Crockford's JavaScript truth table is mind-bending. On top of that, semicolon insertion.
    • ajanuary 14y ago
      Type coercion and asi are probably the least troublesome odd parts of js I encounter day to day. I find the weird scoping rules around 'this' and the verbosity of anonymous functions far worse. [1] (Sincerely and non-rhetorically) Do you really find the former more annoying than the latter? I see a lot of people using those examples to call out JS inappropriateness for development, but it seems like they're focusing on the wrong things to me. [1] I know they can be fixed by using a language that compiles down to JS. So can the parent's criticisms.
    • scriptproof 14y ago
      Not inconsistency to me. + is a string concatenation operator, - is not (maybe it could be) and '1' - 0 is just a fallback.
    • MatthewPhillips 14y ago
      Not really scary day-to-day. If you want to do integer math, make sure you're dealing with integers.
    • deleted 14y ago
      [deleted]
    • deleted 14y ago
      [deleted]
  • pkolaczk 14y ago
    It performs well, until the code is too complex for the JIT compiler to get type inference / speculative optimizations right. Then it suddenly performs very, very poor, because it falls back on dynamic (very slow compared to inline) dispatch and doubles instead of ints.
    • guilloche 14y ago
      The language seems in need of refinement to get significant performance in match of JVM JIT, not to mention c.