native vs typed js array speed

JavaScript performance comparison

Revision 52 of this test case created by

Preparation code

<script>
 
</script>
      
<script>
Benchmark.prototype.setup = function() {
  var arraySize = 40000;
  var typedArray = new Int32Array(arraySize);
  var nativeArray = new Array(arraySize);

};
</script>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Native array
//Write
for (var i = arraySize; i; i--) {
  nativeArray[i] = i;
}

//Read
for (var i = arraySize; i; i--) {
  nativeArray[i];
}
pending…
Typed array
//Write
for (var i = 0; i < arraySize; ++i) {
  typedArray[i] = i;
}

//Read
for (var i = 0; i < arraySize; ++i) {
  typedArray[i];
}
pending…

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