concatperftest (v17)

Revision 17 of this benchmark created by Craig Sharkie on

Description

Made test fairer

Preparation HTML

<script>
  var arr1 = [1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8];

  var arr2 = [1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8];

  var combined;
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
concat
combined = arr1.concat(arr2);
ready
push
combined = arr1.slice(0);
combined.push.apply(combined, arr2);
ready
forEach
if (!Array.prototype.forEach) {
  Array.prototype.forEach = function(fn, scope) {
    for (var i = 0, len = this.length; i < len; ++i) {
      fn.call(scope, this[i], i, this);
    }
  };
}

function extendArray(element, index, array) {
  arr1.push(element);
}

arr2.forEach(extendArray);
ready
forIn
for (member in arr2) {
  arr1.push(arr2[member]);
}
ready

Revisions

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