老师请检查，谢谢

来源：6-8 编程练习

慕勒8522502

2019-10-23 10:22:54

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
    <script>
         //补充代码
         function Animal(name,num){
          this.name = name;
          this.num = num;
          this.getInfo = function(){
          alert(this.name +"的数量：" + this.num);
          }
         }
         function Cat(name,num){
          Animal.call(this,name,num);
         }
         function Dog(name,num){
          Animal.apply(this,[name,num]);
         }
         var cat = new Cat("miao",2);
         cat.getInfo();
         var dog = new Dog("wang",3);
         dog.getInfo();
    </script>
</body>
</html>

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