Question : js class check if new instance
Answered by : kees-van-beilen
new Date() instanceof Date; // => trueSource : | Last Update : Sat, 18 Apr 20
Question : Check Object Is Instance Of Class
Answered by : eric-tam
class Person { constructor(firstName, lastName) { this.firstName = firstName; this.lastName = lastName; } } function test() { const p = new Person(); console.log(p instanceof Person); }Source : | Last Update : Mon, 20 Jun 22
Question : check if value is a class nodejs
Answered by : kind-kinkajou-8wrwfmh2djgn
export const isClass = <T>(value: unknown): value is Constructor<T> => { return typeof value === "function" && typeof value.prototype === "object";
};
export type Constructor<T> = new (...args: unknown[]) => T;Source : | Last Update : Sun, 24 Jul 22