Fast Array Foreach

JavaScript performance comparison

Revision 60 of this test case created by

Preparation code

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

      
<script>
Benchmark.prototype.setup = function() {
    // Populate the base array
    var arr = [];
    for (var i = 0; i < 1000; i++) {
      arr["i"] = i;
    }
  
    function someFn(i) {
      return i * 3 * 8;
    }

};
</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(item) {
  someFn(item);
})
pending…
For
for (var i = 0, len = arr.length; i < len; i++) {
  (function(el) {
    someFn(el);

  })(arr[i]);

}
pending…
$.each
$.each(arr, function(value) {
  someFn(value);
})
pending…
Another For
for (var i = 0, item; item = arr[i]; ++i) {
 someFn(item);
}
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