array of objects vs array of numbers

JavaScript performance comparison

Revision 2 of this test case created by Timo

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var point = function(x,y)
    {
     this.X=x;
     this.Y=y;
    }
    var point_array=[new point(10,20),new point(10,20),new point(10,20),new point(10,20),new point(10,20),new point(10,20),new point(10,20),new point(10,20),new point(10,20),new point(10,20)];
    var point_array2=new Array(10);
    var point_array3=[new point(10,20),new point(10,20),new point(10,20),new point(10,20),new point(10,20),new point(10,20),new point(10,20),new point(10,20),new point(10,20),new point(10,20)];
   
    var x_array=[10,10,10,10,10,10,10,10,10,10];
    var y_array=[20,20,20,20,20,20,20,20,20,20];
    var x_array2=new Array(10);
    var y_array2=new Array(10);
    var x_array3=[10,10,10,10,10,10,10,10,10,10];
    var y_array3=[20,20,20,20,20,20,20,20,20,20];
   
    var len = x_array.length;
    var temp=0;
};
</script>

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Testing in unknown unknown
Test Ops/sec
RW point array
for(var i = 0; i<len;i++)
{
  point_array2[i] = new point(point_array[i].X+1, point_array[i].Y+1);
}
pending…
RW xy array
for(var i = 0; i<len;i++)
{
  x_array2[i] = x_array[i]+1;
  y_array2[i] = y_array[i]+1;
}
pending…
RW refilled point array
for(var i = 0; i<len;i++)
{
  point_array3[i].X = point_array[i].X+1
  point_array3[i].Y = point_array[i].Y+1;
}
pending…
RW prefilled xy array
for(var i = 0; i<len;i++)
{
  x_array3[i] = x_array[i]+1;
  y_array3[i] = y_array[i]+1;
}
pending…

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