Fast Array Loops (v202)

Revision 202 of this benchmark created by Chris Barr on

Preparation HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>

Setup

// Populate the base array
    var arr = [];
    for (var i = 0; i < 1000; i++) {
      arr[i] = i;
    }
  
    function someFn(i) {
      return i * 3 * 8;
    }

Test runner

Ready to run.

Testing in
TestOps/sec
UnderscoreJS
_.each(arr, someFn);
ready
jQuery
$.each(arr, someFn);
ready
Array.ForEach
arr.forEach(someFn);
ready
Standard JS Loop
for (var i = 0; i < arr.length; i++) {
  someFn(arr[i]);
}
ready
Reversed Loop
for (var i = arr.length - 1; i >= 0; i--) {
  someFn(arr[i]);
}
ready
Loop with length defined once
for (var i = 0, len = arr.length; i < len; i++) {
  someFn(arr[i]);
}
ready

Revisions

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