Trouble Understanding 'Use getters and setters to Control Access to an Object'

JavaScript
1

Tell us what’s happening:
So I completed the exercise but I don’t really understand what I am doing exactly. I feel like I copied the example and didn’t really learn anything.

Your code so far

function makeClass() {
  "use strict";
  /* Alter code below this line */
  class Thermostat {
    constructor (temp) {
      this._fahrenheit = temp;
    }

    get celsius () {
      this._celsius = celsius;
    }

    set celsius (temp) {
      this._celsius = (5/9) * (temp - 32);
    }
  }
  /* Alter code above this line */
  return Thermostat;
}
const Thermostat = makeClass();
const thermos = new Thermostat(76); // setting in Fahrenheit scale
let temp = thermos.temperature; // 24.44 in C
thermos.temperature = 26;
temp = thermos.temperature; // 26 in C

Your browser information:
Chrome

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/es6/use-getters-and-setters-to-control-access-to-an-object

2

Which part are you having trouble understanding?