object vs variable

JavaScript performance comparison

Revision 2 of this test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var TestClass = function() {
        this.varX = 0;
        this.varY = 0;
        this.obj = {
          x: 0,
          y: 0
        }
    }
   
    TestClass.prototype.addVar = function() {
      this.varX += 1;
      this.varY += 1;
    }
    TestClass.prototype.addObj = function() {
      this.obj.x += 1;
      this.obj.y += 1;
    }
    var TestClassMain = function()
    {
      this.testClass = new TestClass();
    }
    var testClass = new TestClass();
    var testClassMain = new TestClassMain();
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
variable in prototype
testClassMain.testClass.addVar();
pending…
obj in prototype
testClassMain.testClass.addObj();
pending…
directly to obj in obj
testClassMain.testClass.obj.x += 1;
testClassMain.testClass.obj.y += 1;
pending…
static to obj
testClass.obj.x += 1;
testClass.obj.y += 1;
pending…

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