About RxJS
RxJS (Reactive Extensions for JavaScript) is an open-source library for reactive programming in JavaScript. It helps developers work with asynchronous data and events, such as user input, HTTP requests, timers and WebSocket messages, using streams called Observables.
Key concepts:
Observables: streams of values that arrive over time.
Operators: functions such as map, filter, debounceTime, switchMap and merge that transform and combine streams.
Subscriptions: code that reacts to new values, errors and completion.
Subjects: streams that can broadcast values to several subscribers.
Where it is used:
RxJS is a core dependency of Angular, which uses it for HTTP requests, forms and routing, so most Angular applications include it. It is also used with React and other frameworks for complex event handling, real-time data and state management.
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