Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    function ClassA(a, b, c, d)
    {
        this._a = a;
        this._b = b;
        this._c = c;
        this._d = d;
    }
    
    ClassA.prototype = 
    {
        selfAccess : function()
        {
                this._a = this._b + this._c + this._d;
                this._b = this._b + this._c + this._d;
                return this._a + this._b + this._c + this._d;
        }
    
    }
    
    function ClassPlatform()
    {
        this._classA = new ClassA(1,2,3,4);
    
    }
    
    ClassPlatform.prototype = 
    {
        varPass : function(a, b, c, d)
        {
                a = b + c + d;
                b = b + c + d;
                return a + b + c + d;
        },
    
        objPass : function(obj)
        {
                obj._a = obj._b + obj._c + obj._d;
                obj._b = obj._b + obj._c + obj._d;
                return obj._a + obj._b + obj._c + obj._d;
        },
    
        callLocal : function()
        {
                this._classA.selfAccess();
        },
    
        callObjPass : function()
        {
                this.objPass(this._classA);
        },
    
        callVarPass : function()
        {
                this.varPass(this._classA._a, this._classA._b, this._classA._c, this._classA._d);
        }
    }
    
    var cp = new ClassPlatform();
    var cA = new ClassA(1,2,3,4);
  };
</script>

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cp.callLocal();
 

cp.callObjPass();

cA.selfAccess()

cp.objPass(cA);

cp.callVarPass();

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