quicksort in js

quicksort.js

function quicksort(list) {
  if (list.length == 0) {
    return list;
  }

  var pivot = list.splice(Math.floor(list.length / 2), 1)[0];
  var smaller = quicksort(list.filter(function(i) {
    return i <= pivot;
  }));
  var larger = quicksort(list.filter(function(i) {
    return i > pivot;
  }));

  return smaller.concat(pivot, larger);
}