array-vs-array

Benchmark created on

Preparation HTML

<script>
  var width = 500;
  var height = 500;
  var a = b = [];
  for(var i = 0; i < height; i++) {
      var a[i] = [];
      for(var j = 0; j < width; j++) {
          a[i][j] = [];
      }
  }
  
  for(var i = 0; i < width * height; i++) {
      b[i] = [];
  }
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
a
var n1 = null;
for(var i = 0; i < height; i++) {
    for(var j; j < width; j++) {
        n1 = a[i][j];
    }
}
ready
b
var n2 = null;
for(var i = 0; i < width * height; i++) {
    n2 = b[i];
}
ready

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