1 //组合继承是Javascript最常用的继承模式
2 function SuperType(name) {
3 this.name = name;
4 this.colors = ["red", "blue", "green"];
5 }
6
7 SuperType.prototype.sayName = function() {
8 console.log(this.name);
9 };
10
11 function SubType(name, age) {
12 //继承属性
13 SuperType.call(this, name);
14 this.age = age;
15 }
16
17 //继承方法
18 SubType.prototype = new SuperType();
19
20 SubType.prototype.sayAge = function() {
21 console.log(this.age);
22 };
23
24 var instance1 = new SubType("Nicholas", 29);
25 instance1.colors.push("black");
26 console.log(instance1.colors);
27 instance1.sayName();
28 instance1.sayAge();
29
30 var instance2 = new SubType("Greg", 27);
31 console.log(instance2.colors);
32 instance2.sayName();
33 instance2.sayAge();
