SOURCE

class People {
    constructor(name, sex){
        this.name = name
        this.sex = sex
    }
    run() {
        console.log(`${this.name}正在跑步！`)
    }
}

class Student extends People {
    constructor(name,sex, order) {
        super(name, sex)
        this.order = order
    }
    study() {
        console.log(`${this.name}是一名${this.sex}学生，学号是${this.order}`)
    } 
}

class Teacher extends People {
    constructor (name, sex, major) {
        super(name, sex)
        this.major = major
    }
    teach() {
        console.log(`${this.name}是一名教${this.major}专业的${this.sex}老师`)
    }
}

const jack = new Student('杰克','男', '0010') 
console.log(jack.name)
console.log(jack.order)
jack.study()
jack.run()


const wanglaoshi = new Teacher('王老师','男', '语文') 
console.log(wanglaoshi.name)
console.log(wanglaoshi.major)
wanglaoshi.teach()
wanglaoshi.run()

console.log(Object.prototype.toString.call(Student))
console.log(jack.__proto__ === Student.prototype)

console.log('')