benchmarkObjects.js

// Constructor test

function constructor() { };

function constructorTest(N) {
  var start = Date.now();
  for (var i = 0; i < N; i++) {
    new constructor();
  }
  return (Date.now() - start) / N;
}

// Factory test

function factory() {
  return { };
};

function factoryTest(N) {
  var start = Date.now();
  for (var i = 0; i < N; i++) {
    new constructor();
  }
  return (Date.now() - start) / N;
}

// literal test
//
function literalTest(N) {
  var start = Date.now();
  for (var i = 0; i < N; i++) {
    {}
  }
  return (Date.now() - start) / N;
}

console.log('Constructor Objects: ', constructorTest(1e6));
console.log('Factory Objects: ', factoryTest(1e6));
console.log('Literal Objects: ', literalTest(1e6));