class Laptop {

      constructor(info, quality) {

         this.info = info;

         this.isOn = false;

         this.quality = quality;

      }

      turnOn() {

         this.isOn = true;

         this.quality--;

      }

      turnOff() {

         this.isOn = false;

         this.quality--;

      }

      showInfo() {

         let info = {};

        for (let oLdKey in this.info) {

         let newKey = JSON.stringify(oLdKey);

         info[newKey] = this.info[oLdKey];

        }

         return info;

      }

      get price() {

        let price = (800 - (this.info.age * 2) + (this.quality * 0.5));

         return price;

      }


   }