native vs typed js array speed

JavaScript performance comparison

Revision 54 of this test case created by

Preparation code

<script>
var arraySize = 10000;
var typedArray = new Int32Array(4 * arraySize);
var nativeArray = new Array(4 * arraySize);
</script>
      
<script>
Benchmark.prototype.setup = function() {
  var n;

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

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

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