Array.filter vs jQuery.filter vs custom Array.where

JavaScript performance comparison

Revision 2 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() {
  // Add array.where implementation
  Array.prototype.where = Array.prototype.where || function(predicate) {
    var results = [],
        len = this.length,
        i = 0;
  
    for(; i < len; i++) {
      var item = this[i];
      if (predicate(item)) {
        results.push(item);
      }
    }
  
    return results;
  };
  
  // Generate test array
  window.array = (function() {
    var arr = [];
    for (var i = 0; i < 100; ++i) {
      arr.push(i);
    }
  
    return arr;
  }());

};
</script>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Array.filter
array.filter(function(el) {
  return el % 2 === 0;
});
pending…
jQuery.filter
jQuery(array).filter(function(el) {
  return el % 2 === 0;
});
pending…
Array.where
array.where(function(el) {
  return el % 2 === 0;
});
pending…

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Revisions

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