push vs assignment in loop

JavaScript performance comparison

Revision 2 of this test case created

Info

Just looking to see if assignment or push if faster in loops.

Original test produced skewed results in IE8 due to MaxScriptStatements limitation causing dialog pop-up. You must fix this in IE8 by increasing the value in order to get the correct results.

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Testing in unknown unknown
Test Ops/sec
Assignment Loop
var a = (function() {
  var collection, i, len;
  collection = [];
  for (i = 0, len = 100; i < len; i++) {
    collection[i] = i;
  }
  return collection;
})();
pending…
Push Loop
var a = (function() {
  var collection, i, len;
  collection = [];
  for (i = 0, len = 100; i < len; i++) {
    collection.push(i);
  }
  return collection;
})();
pending…

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