forEach vs loop

JavaScript performance comparison

Revision 36 of this test case created by Schweigi

Preparation code

<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.5.1/underscore-min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.1.5/angular.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/1.3.1/lodash.min.js"></script>
<script>
var lodash = _.noConflict();
</script>
      
<script>
Benchmark.prototype.setup = function() {
  var _ = window._,
    angular = window.angular,
    lodash = window.lodash;
  
  var arr = [];
  for (var i = 0; i < 100; i++) {
    arr[i] = i;
  }
  
  var values = [];

};
</script>

Preparation code output

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Array#forEach
arr.forEach(function(value) {
  values.push(value);
});
pending…
underscore.forEach
_.forEach(arr, function(value) {
  values.push(value);
});
pending…
lodash.forEach
lodash.forEach(arr, function(value) {
  values.push(value);
});
pending…
angular.forEach
angular.forEach(arr, function(value) {
  values.push(value);
});
pending…
for loop (simple)
for (var i = 0; i < arr.length; i++) {
  values.push(arr[i]);
}
pending…
for loop
for(var i = 0, l = arr.length; i < l; i++) {
  values.push(arr[i]);
}
pending…
while
var i = 0;
while (i < arr.length) {
  values.push(arr[i]);
  i++;
}
pending…

Compare results of other browsers

Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL.

0 Comments