// Déclaration d’une fonction
function a(n) {
let val = 1;
console.log(val+n) ;
}
a(2); // => exécution de la méthode et affichage de 1 dans la console
// si on écrit a(); avant la déclaration de la fonction, cela fonctionne !
// Déclaration d’une expression fonction (fonction anonyme)
let b = function(n) {
let val = 2;
console.log(val+n) ;
} ;
b(4); // => exécution de la méthode et affichage de 2 dans la console
(function(n) {
let val = 3;
console.log(val+n) ;
})(6) ; // => exécution et affichage de 3 dans la console
((n) => {
let val = 4;
console.log(val+n) ;
})(8) ; // => exécution et affichage de 4 dans la console via une fonction flèche
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