Object.create：
如下圖的Dog02利用Object.create來獲取Dog01的屬性，但是不會顯示出來。

        var Dog01 = {
            name: 'TOM',
            size: 'big',
            color: 'yellow'
        };
        var Dog02 = Object.create(Dog01);
        console.log(Dog02);

賦予Dog02新的屬性name。

        var Dog02 = Object.create(Dog01);
        console.log(Dog02);
        Dog02.name = 'Mary';

多層繼承：

        function Animal(腿) {                    //創一個父層Animal的屬性
            this.move = '會動';
            this.breath = '會呼吸';
            this.腿 = 腿 + '條腿';
        };                      
        Animal.prototype.run = function () {    //創一個父層Animal的method
            console.log('路上或海上');
        };

        function dog(name, color) {            //創一個子層dog的屬性
            Animal.call(this, 4);              //自訂子層狗的參數，運用到來自父層animal的屬性。
            this.name = name;
            this.color = color;
        };

        dog.prototype.eat = function () {      //創一個次層dog的method
            console.log('乖乖吃');
        };

連接父層Animal與子層dog：
在中間利用Object.create，並利用().prototype.constructor來重建dog的constructor。

        dog.prototype = Object.create(Animal.prototype);
        dog.prototype.constructor = dog;

        function Animal(腿) {
            this.move = '會動';
            this.breath = '會呼吸';
            this.腿 = 腿 + '條腿';
        };
        Animal.prototype.run = function () {
            console.log('路上或海上');
        };

        dog.prototype = Object.create(Animal.prototype);
        dog.prototype.constructor = dog;

        function dog(name, color) {
            Animal.call(this, 4);              
            this.name = name;
            this.color = color;
        };
        dog.prototype.eat = function () {
            console.log('乖乖吃');
        };

        var dog01 = new dog('TOM', 'RED');     //利用建構子自訂一隻實體狗

        console.log(dog01);
        dog01.eat();
        dog01.run();

練習：創造父層animal，及2個子層動物且擁有不同的methods。

        animal.prototype.run = function (腿) {
            if (腿 > 0) {
                console.log(this.name + '是路上走');
            }
            else {
                console.log(this.name + '是海裡游');
            };
        };

        fish.prototype = Object.create(animal.prototype);
        fish.prototype.constructor = fish;

        function fish(name, color, size) {
            animal.call(this, 0);
            this.name = name;
            this.color = color;
            this.size = size;
        };
        fish.prototype.eat = function () {
            console.log(this.name + ' 乖乖吃');
        };

        cat.prototype = Object.create(animal.prototype);
        cat.prototype.constructor = cat;

        function cat(name, color, size) {
            animal.call(this, 4);
            this.name = name;
            this.color = color;
            this.size = size;
        };

        cat.prototype.eat = function () {
            console.log(this.name + ' 喵喵吃');
        };
        var cat01 = new cat('kitty', 'brown', 'small');
        var fish01 = new fish('Shark', 'RED', 'big');

        console.log(cat01);
        cat01.eat();
        cat01.run(4);
        console.log(fish01);
        fish01.eat();
        fish01.run(0);