请老师检查，谢谢

来源：7-2 编程练习

胜己

2020-09-13 19:41:55

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
    <script>  
        //补充代码
        function Animal(name,food) {
            this.name = name;
            this.food = food;
            this.say = function() {
                alert(this.name + '喜欢吃' + this.food);
            }
        }

        function Dot() {
            Animal.call(this,'狗狗','骨头')
        }
        var  d = new Dot();
        d.say();
    </script> 
</body>
</html>

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