native vs typed js array speed

JavaScript performance comparison

Revision 61 of this test case created by

Preparation code

<script>
  var arraySize = 10000;
  
  var typedArray = new Int32Array(arraySize);
  var nativeArray = new Array(arraySize);
</script>
    

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Typed array
//Write
for (var j=0,i = 0; i < arraySize; i++) {
 typedArray[i] = 125*((j++ *(12*i)+i)%10);
}

//Read
for (var i = 0; i < arraySize; i++) {
 var value = typedArray[i];
}
pending…
Native array
//Write
for (var j=0,i = 0; i < arraySize; i++) {
 nativeArray[i] = 125*((j++ *(12*i)+i)%10);
}

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

Compare results of other browsers

Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL.

0 Comments