Fast Array Loops (v263)

Revision 263 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>
        <script>var underscore = _.noConflict();</script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.10.1/lodash.min.js"></script>
        <script>var lodash = _.noConflict();</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
Array.ForEach
arr.forEach(someFn);
ready
UnderscoreJS
underscore.each(arr, someFn);
ready
jQuery
$.each(arr, 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
Lodash
lodash.each(arr, someFn);
ready

Revisions

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