Optimisation #2 Javascript : Réduction du nombre de variables globales

En créant un nouvel objet (et un seul!), on évite de créer pleins de variables globales.

On gagne donc en :

Propreté de code
Performance (très peu avec les navigateurs actuels)

Et surtout, on évite les conflits de noms avec d’autres applications, widgets et librairies!


var firstName = ‘Joey’;
var lastName = ‘Bronner’;
function sayHello() {



var User = {
firstName : ‘Joey’,
lastName : ‘Bronner’,
sayHello : function() {


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