aarontgrogg Array.filter vs for-loop

JavaScript performance comparison

Revision 5 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var sidekicks = [{
    name: "Robin",
    hero: "Batman"
  }, {
    name: "Supergirl",
    hero: "Superman"
  }, {
    name: "Oracle",
    hero: "Batman"
  }, {
    name: "Krypto",
    hero: "Superman"
  }];

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Array.filter
function filterFn(el) { return (el.hero === "Batman"); }

var batKicks = sidekicks.filter(filterFn);
pending…
for loop
var batKicks = [];

for (var i = 0; i < sidekicks.length; i++) {
  var tmp = sidekicks[i];
  if (tmp.hero === "Batman" || tmp.hero === "Nanana" || tmp.hero === "Robin") {
    batKicks.push(tmp);
  }
}
pending…

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