Gozala

// Lack of tail call optimization in JS
var sum = function(x, y) {
  return y > 0 ? sum(x + 1, y - 1) :
         y < 0 ? sum(x - 1, y + 1) :
         x
}

sum(20, 100000) // => RangeError: Maximum call stack size exceeded

// Using workaround

Raynos

Why the jQuery Abstraction isn't needed.

(One needs some form of browser normalization so that modern features works, no-one is doubting that).

Related: [jQuery library critique][2]

Abstractions that aren't needed

Selectors