jQuery each vs JS forEach

JavaScript performance comparison

Revision 22 of this test case created by

Preparation code

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
</script>
<script>
  // Setup collection
  var collection = [];
  for (var i = 0; i < 200; i++) {
    collection.push({i:i});
  }
</script>
    

Preparation code output

<script> // Setup collection var collection = []; for (var i = 0; i < 200; i++) { collection.push({i:i}); } </script>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
jQuery
$.each(collection, function(index, element) {
  console.log(element.i);
});
pending…
JS forEach()
collection.forEach(function(element, index) {
  console.log(element.i);
});
pending…
JS for(var x in collection)
for (var index in collection) {
  if (collection.hasOwnProperty(index)) {
    console.log(collection[index].i);
  }
}
pending…
Js for
var idx = 0,
  length = collection.length;
for (idx = 0; idx < length; ++idx) {
  console.log(collection[idx].i)
}
pending…

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Revisions

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