ES6 class

//父类
class People {
    constructor(name) {
        this.name = name
    }
    eat() {
        console.log(`eat: 姓名 ${this.name}`)
    }
}
//子类
class Student extends People {
    constructor(name, number) {
        super(name)
        this.number = number
    }
    sayHi() {
        console.log(
            `sayHi: 姓名 ${this.name} , 学号 ${this.number}`
        )
    }
}
//子类
class Teacher extends People {
    constructor(name, major){
        super(name)
        this.major = major
    }
    teach(){
        console.log(
            `teach: 姓名 ${this.name} , 教授 ${this.major}`
        )
    }
}

// 通过类 new 对象/实例
const xiaoming = new Student('小明', '100')
console.log(xiaoming.name)
xiaoming.eat()
xiaoming.sayHi()

const zhanglaoshi = new Teacher('张老师', '语文')
zhanglaoshi.eat()
zhanglaoshi.teach()