// example using constructor function

function Person (name, age) {
   this.name = name;
   this.age = age;
}

Person.prototype.greet = function () {
   console.log('Hello, I\'m ' + this.name)
}

var man = new Person("dude", 23);




// example using obj literal as prototype

var Human = {
   name: null,
   age: null,
   location: null
}

Human.greet = function () {
   console.log("Hello, I'm " + this.name)
}

var woman = Object.create(Human)