“Operator JS” Kode Jawaban

?? Operator JS

const valeurNulle = null;
const texteVide = ""; // falsy
const unNombre = 42;

const valA = valeurNulle ?? "valeur par défaut pour A";
const valB = texteVide ?? "valeur par défaut pour B";
const valC = unNombre ?? 0;

console.log(valA); // "valeur par défaut pour A"
console.log(valB); // "" (car la chaine vide n'est ni `null` ni `undefined`)
console.log(valC); // 42
Mushy Macaque

Operator JS

!true will become false. !0 will become true. !'' will become true. Think of this operator as saying “This item is NOT true” or “This item is NOT false”.
Doubtful Dunlin

di operator JavaScript

const car = { make: 'Honda', model: 'Accord', year: 1998 };

console.log('make' in car);
// expected output: true

delete car.make;
if ('make' in car === false) {
  car.make = 'Suzuki';
}

console.log(car.make);
// expected output: "Suzuki"
Spen

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