filter vs foreach

JavaScript performance comparison

Test case created by Josh

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var data = [];
  for (var i = 0; i < 1000; i++) {
    data[i] = {value: i};  
  }
  var countA = 0;
  var countB = 0;
  

};

Benchmark.prototype.teardown = function() {
  console.log(countA, countB);

};
</script>

Test runner

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Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
forEach
data.forEach(function(v) {
  if (v.value % 13) { 
    countA++;
  }
});
pending…
filter
countB = data.filter(function(v) {
  return (v.value % 13);
}).length;
pending…

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