麻烦老师帮我看一下还需要改进吗，函数这么写麻烦吗，谢谢

来源：7-2 编程练习

早起看见一只小鹿

2019-10-10 10:08:43

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
    <script>  
       function Animal(name,food){
           this.name = name;
           this.food = food;
           this.say = function(){
               alert(this.name+"喜欢吃"+this.food);
           }
       }
       function Dog(name,food){
           Animal.apply(this,[name,food]);
       }
       var dog = new Dog("狗狗","骨头");
       dog.say();
    </script> 
</body>
</html>

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