Creating simple objects.

perf.js

// Creating simple objects.

// our constructors
var A = function(){};
var B = function(){};
B.prototype.m = function(){};
var C = function(){
  this.p = 42;
};
C.prototype.m = function(){};

this.group(
  "Objects",
  function EmptyNaked(){ return {}; },
  function EmptyObj()  { return new Object(); },
  function EmptyCtrA() { return new A(); },
  function EmptyCtrB() { return new B(); },
  function PropNaked() { return {p: 42}; },
  function PropCtrC()  { return new C(); }
);

Benchmark it with http://www.perfjs.com/