class Laptop {
    info = {}
    isOn = false
    constructor(info, quality){
        this.info = {
            producer: info.producer,
            age: info.age,
            brand: info.brand
        };

        this.quality = quality;
    };
    ;
    turnOn(){
        this.quality--;
        this.isOn = true;
       // return isON
    };
    turnOff(){
        this.quality--;
        this.isOn = false;
       // return isOn;
    };
    showInfo(){
        let json = JSON.stringify(info)
        //return json;
    }
    get price(){
        return (800 - (this.info.age * 2) + (this.quality * 0.5))
    }
}

let info = {producer: "Dell", age: 2, brand: "XPS"}
let laptop = new Laptop(info, 10)
laptop.turnOn()
console.log(laptop.showInfo())
laptop.turnOff()
console.log(laptop.quality)
laptop.turnOn()
console.log(laptop.isOn)
console.log(laptop.price)