1 <script type="text/javascript">
2 function Animal () {
3 this.species="Animal";
4 }
5 function Cat(name,color){
6 this.name=name;
7 this.color=color;
8 }
9 //Apply 将父类对象的构造函数赋值到子类上，Animal.apply(this,arguments);
10 function Cat(name,color){
11 this.name=name;
12 this.color=color;
13 Animal.apply(this,arguments);
14 }
15 var cat1=new Cat("大毛","黄色");
16 alert(cat1.species);
17
18 //Prototype 子对象原型prototype赋值父类对象，并将子类对象原型的构造函数赋值为子类
19 Cat.prototype = new Animal();
20 Cat.prototype.constructor=Cat;
21 var cat1=new Cat("大毛","黄色");
22 alert(cat1.species);
23 </script>
