编辑代码

let that= [];


function Hero(name,hp){
    this.name = name;
    this.hp = hp;
    that.push(this);
}

console.log(Hero.prototype);

Hero.prototype.atk = function (){
    that.push(this);
    console.log(`${this.name}体力是${this.hp}.`);

}

const liubei = new Hero('刘备',78);
const guanyu = new Hero('关羽',98);
const zhangfei = new Hero('张飞',98);

liubei.atk();
guanyu.atk();
zhangfei.atk();

console.log(that[3] === liubei);
console.log(that[4] === guanyu);
console.log(that[5] === zhangfei);
console.log(liubei.atk === guanyu.atk);