native vs typed js array speed (v21)

Revision 21 of this benchmark created on

Preparation HTML

<script>
  var arraySize = 2000;

  var nativeArray;
  var int32Array;
  var float32Array;
</script>

Setup

var sum = 0;

Test runner

Ready to run.

Testing in
TestOps/sec
Native Write
nativeArray = [];
for (var i = 0; i < arraySize; ++i) {
  nativeArray.push(i);
}
ready
Int32 Write
int32Array = new Int32Array(arraySize);
for (var i = 0; i < arraySize; ++i) {
  int32Array[i] = i;
}
ready
Float32 Write
float32Array = new Float32Array(arraySize);
for (var i = 0; i < arraySize; ++i) {
  float32Array[i] = i;
}
ready
Native Read
for (var i = 0; i < arraySize; ++i) {
  sum += nativeArray[i];
}
ready
Int32 Read
for (var i = 0; i < arraySize; ++i) {
  sum += int32Array[i];
}
ready
Float32 Read
for (var i = 0; i < arraySize; ++i) {
  sum += float32Array[i];
}
ready

Revisions

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