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Vous devez développer une classe pour laquelle il ne doit exister qu’une et une seule instance dans toute votre application. Quel est le design-pattern à retenir pour cela ?
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Is the following code valid?
class Person {
constructor(name, age) {
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this.age = age;
}
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Is the following code valid?
class Person {
constructor(name, age) {
this.name = name;
this.age = age;
}
}
const person = new Person('John', 20);
console.log(person.name);
console.log(person.age);