What are Observables in Angular and why are they important?

Quick Answer Observables are lazy data streams from RxJS. Angular uses them for HTTP calls (HttpClient returns Observables), routing events, form value changes, and more. Observables support operators (map, filter, switchMap) for transforming and combining streams. Unlike Promises, Observables are cancellable and can emit multiple values over time. Unsubscribe to prevent memory leaks.

Answer

Observables represent asynchronous or event-based data streams. Angular uses RxJS Observables for HTTP requests, user inputs, route events, and real-time updates.

Observables support cancelling, multiple values, and powerful operators, making them ideal for reactive UI development.

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What are Observables in Angular and why are they important?

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