Basic way to create object in JS (private/public encapsulation simulation)

Personne.js

var Personne = function(n, f) {

    //use var to declare private variable
    var name = n;
    var firstname = f;

    //one of private methode
    var private_cry = function() {
        console.log(`YES I TOLD YOU!!! MY NAME IS ${name}`);
    }

    //the best way to declare public methode
    Personne.prototype.setName = function(n) {
        name = n;
    }
    Personne.prototype.setFirstname = function(f) {
        firstname = f;
    }
    Personne.prototype.getName = function() {
        return name;
    }
    Personne.prototype.getFirstname = function() {
        return firstname;
    }

    //give public access to the private methode
    Personne.prototype.cry = function() {
        return private_cry();
    }
}

//clear the console before show any output
console.clear();

//create a Persone object pass in the construtor arguments
var p = new Personne('vile', 'jules');

//use some getter and setter
p.setName('dorme');
p.setFirstname('jean');
console.log(p.getFirstname());
console.log(p.getName());

//make a personne cry
p.cry();

//show an object
console.log(p);