Factory/Module pattern of OOJS

Readme.md

Examples used in my talk about How to Succeed at Object Oriented Javascript Without Hating Yourself.

Link to talk by Douglas Crockford on FEM about this: https://frontendmasters.com/courses/good-parts-javascript-web/module-pattern/

factory.js

function createTeacher(name, age, secret, position) {
  var result = createPerson(name, age, secret, position);

  result.teach = function() {
    return 'i am teaching stuff kinda sorta';
  };
  result.position = position;

  return result;
}

function createPerson(name, age, secret) {
  secret = secret || 'everybody has a secret';
  return {
    name: name,
    get age() {
      return age;
    },
    birthday: function() {
      return (age += 1);
    },
    secretLength: function() {
      return secret.length;
    },
  };
}

//
//
//
//
//
//

var josh = createPerson('josh', 30, 'I have small hands');
console.log(josh);

console.log('testing birthday function');
console.log('age is', josh.age);
josh.birthday();
console.log('age is', josh.age);

console.log('testing setting age directly');
console.log('age is', josh.age);
josh.age = 5;
console.log('age is', josh.age);

console.log('testing setting name directly');
console.log('name is', josh.name);
josh.name = 'butts';
console.log('name is', josh.name);

console.log('testing secretLength function');
console.log(josh.secretLength());

console.log('testing accessing secret directly');
console.log('secret is', josh.secret);

prototype.js

function Person(name, age, secret) {
  this.name = name;
  this.age = age;
  this.secret = secret || 'everybody has a secret';
}

Person.prototype.birthday = function birthday() {
  return (this.age += 1);
};

Person.prototype.secretLength = function secretLength() {
  return this.secret.length;
};

//
//
//
//
//
//
//
//

var josh = new Person('josh', 30, 'I have small hands');
console.log(josh);

console.log('testing birthday function');
console.log('age is', josh.age);
josh.birthday();
console.log('age is', josh.age);

console.log('testing setting age directly');
console.log('age is', josh.age);
josh.age = 5;
console.log('age is', josh.age);

console.log('testing setting name directly');
console.log('name is', josh.name);
josh.name = 'butts';
console.log('name is', josh.name);

console.log('testing secretLength function');
console.log(josh.secretLength());

console.log('testing accessing secret directly');
console.log('secret is', josh.secret);

//if you forget the new keyword, bad things happen
// var josh = Person('josh', 30);
// console.log(josh, name, age);