Web / RxJs Interview questions
Explain Observer in RXJS.
Observer is an interface for a consumer of push-based notifications delivered by an Observable.
It has below structure,
interface Observer<T> { closed?: boolean; next: (value: T) => void; error: (err: any) => void; complete: () => void; }
A handler that implements the Observer interface for receiving observable notifications will be passed as a parameter for observable as below.
myObservable.subscribe(myObserver)
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