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// __proto__
// Object.getPrototypeOf()

function Cat(name, color) {
    this.name = name;
    this.color = color;
}

Cat.prototype.voice = function() {
    console.log(`Cat ${this.name} says myay`);
};

const cat = new Cat('Kot', 'white');

console.log(Cat.prototype);
console.log(cat);
console.log(cat.__proto__ === Cat.prototype);
console.log(cat.constructor);
cat.voice();

// ============
function Person() {}
Person.prototype.legs = 2;
Person.prototype.skin = 'white';

const person = new Person();
person.name = 'Vladilen';

console.log('skin' in person);
console.log(person.legs);
console.log(person.name);

console.log(person.hasOwnProperty('name'));
console.log(person.hasOwnProperty('skin'));

// Object.create()
var proto = { year: 2019 };
const myYear = Object.create(proto);

console.log(myYear.year);

// proto.year = 2200
//
// console.log(myYear.year)

proto = { year: 999 };

console.log(myYear.year);

console.log(myYear.hasOwnProperty('year'));
console.log(myYear.__proto__ === proto);