Conways rules js code

conwaysRules.js

var rules = (function () {
  function hasThreeNeighbors(numberOfNeighbors) {
    return numberOfNeighbors == 3;
  }

  function hasTwoNeighbors(numberOfNeighbors) {
    return numberOfNeighbors == 2;
  }

  return {
    goesOnLivingWith: function (numberOfNeighbors) {
      return hasThreeNeighbors(numberOfNeighbors) || 
              hasTwoNeighbors(numberOfNeighbors);
    },
    isCreatedWith: function (numberOfNeighbors) {
      return hasThreeNeighbors(numberOfNeighbors);
    }
  };
})();