BehaviorSubject in RxJS — a practical guide to RxJS BehaviorSubject with clear examples you can reuse in real projects.
Angular Tutorial Series (60/119). Prefer one article? Read the complete Angular tutorial.
Short description
Great for auth user and simple store-like services.
BehaviorSubject
private readonly user$ = new BehaviorSubject<User | null>(null);
readonly user = this.user$.asObservable();
setUser(u: User) { this.user$.next(u); }