19-use-getters-and-setters-to-control-access-to-an-object.js

/*
Use getters and setters to Control Access to an Object:
Use the class keyword to create a Thermostat class. The constructor accepts a Fahrenheit temperature.
In the class, create a getter to obtain the temperature in Celsius and a setter to set the temperature in Celsius.
Remember that C = 5/9 * (F - 32) and F = C * 9.0 / 5 + 32, where F is the value of temperature in Fahrenheit, and C
isthe value of the same temperature in Celsius.

Note: When you implement this, you will track the temperature inside the class in one scale, either Fahrenheit or Celsius.

This is the power of a getter and a setter. You are creating an API for another user, who can get the correct result
regardless of which one you track.
In other words, you are abstracting implementation details from the user.

- Thermostat should be a class with a defined constructor method.
- class keyword should be used.
- Thermostat should be able to be instantiated.
- When instantiated with a Fahrenheit value, Thermostat should set the correct temperature.
- A getter should be defined.
- A setter should be defined.
- Calling the setter with a Celsius value should set the temperature.
 */

// Only change coded below this line
class Thermostat {
    constructor(temperature) {
        this._temperature = temperature;
    }

    get temperature() {
        return 5 / 9 * (this._temperature - 32);
    }

    set temperature(temperature) {
        this._temperature = temperature * 9.0 / 5 + 32;
    }
}

// Only change coded above this line

const thermos = new Thermostat(76); // Setting in Fahrenheit scale
let temp = thermos.temperature; // 24.44 in Celsius
console.log(temp);
thermos.temperature = 26;
console.log(thermos);
temp = thermos.temperature; // 26 in Celsius
console.log(temp);