ClassLaptop_MoreEx- ObjectAndClassess

class Laptop {
  constructor(info, quality) {
    this.info = info;
    this.quality = quality; // quality is a number
  }

  isOn = false;

  turnOn(isOn) {
    if (isOn == false) {
      isOn = true;
      return isOn;
    }
  }

  turnOff(isOn) {
    if (isOn === true) {
      isOn = false;
      return isOn;
    }
  }

  showInfo() {
    let textJSON = JSON.stringify(this.info);
    console.log(textJSON);
  } // This method works!

  quality() {
    let currentQuality = this.quality;
    while (currentQuality > 0) { {
        currentQuality--;
      }
    }
    return currentQuality;
  }


  price() {
    let currentPrice = Number(800 - info.age * 2 + quality * 0.5);
    return currentPrice;
  }
}

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);