Prototype vs Object.create

prototype-vs-object-create.js

//CLASSIC PROTOTYPE
var Rectangle = function (width, height) {
    this.width = width;
    this.height = height;
}

Rectangle.prototype.area = function() {
    return this.width * this.height;
}

(new Rectangle(4, 5)).area()//20

var Square = function (side) {
    this.width = side;
    this.height = side;
}

Square.prototype = new Rectangle(); 
Square.prototype.constructor = Square;

(new Square(4)).area()//16

//OBJECT CREATE
var Rectangle = {
    create: function (width, height) {
        var obj = Object.create(this);
        obj.width = width;
        obj.height = height;

        return obj;
    },
    area: function () {
        return this.width * this.height;
    }
};

Rectangle.create(4, 5).area();//20

var Square = Object.create(Rectangle);
Square.create = function (side) {
    return Rectangle.create(side, side);
}

Square.create(4).area();//16