面向对象

class Person {
    constructor(name,age) {
        this.name = name;
        this.age = age;
    }
    showInfo() {
        console.log(this.name,this.age)
    }
    static showName() {
        console.log('这个人活了');
    }
}
var person = new Person('高冷俊',22);
person.showInfo();
Person.showName();

class Animal {
    constructor(name) {
        this.name = name;
    }
    showName() {
        console.log(this.name);
    }
    static die() {
        console.log('这个动物死了');
    }
}
class Mouse extends Animal {   //extends关键字告诉该类属于某类的子类
    constructor(name,color) {
        super(name);    //使用父类属性
        this.color = color;
    }
    showInfo() {
        console.log(this.name,this.color);
    }
}
var m = new Mouse('jerry','brown');
m.showName();
m.showInfo();