注释很详细，直接上代码
涉及知识点：
- 构造函数实现类
- ES6类的写法
- 原型链的应用
题干：
我的答案
<!DOCTYPE html>
<html><head><meta charset="utf-8" /></head><body><script type="text/javascript">/*** 好眼熟，之前咱好像在题目规定使用class时用构造函数也写了一遍* 所以这里咱再来一遍，当复习了*/function Human(name) {this.name = name;this.kingdom = "animal";this.color = ["yellow", "white", "brown", "black"];}function Chinese(name, age) {Human.call(this, name);this.age = age;this.color = "yellow";}//在Human的原型上定义getName方法Human.prototype.getName = function () {return this.name;};//继承Human原型(记得new而不是直接赋值，因为js赋值的是地址，会将两者绑定)Chinese.prototype = Object.create(Human.prototype);//重写Chinese的构造函数将原型链的constructor指回Chinese，正所谓作业可以抄但名字记得改Chinese.prototype.constructor = Chinese;//在Chinese的原型上定义getAge方法Chinese.prototype.getAge = function () {return this.age;};//这里我们再来用Es6的class语法来实现一遍，体验一下Es6的语法的便捷class Human1 {constructor(name) {this.name = name;this.kingdom = "animal";this.color = ["yellow", "white", "brown", "black"];}}class Chinese1 extends Human1 {constructor(name, age) {super(name);this.age = age;this.color = "yellow";}getAge() {return this.age;}}</script></body>
</html>博客更新不是很及时,需要看后面内容的可以看看我的
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