It has over 2 million dependent repositories on GitHub and over 22 million weekly downloads from NPM. RxJS is a powerful and popular tool that continues to grow. It is supported by JavaScript and TypeScript, and it works well with Angular. It has a large collection of operators in filtering, error handling, conditional, creation, multicasting, and more. The RxJS library is great for handling async tasks. It is an observable that multicasts information to observers.Ī scheduler handles the execution of subscriptions. They are the objects that subscribe to observables.Ī subscription to the observable will trigger the observable to execute.Īn operator is a function that allows us to perform certain actions on events executed by observables.Ī subject is the same as an EventEmitter. Observables model a stream of events.Īn observer is an object with next(), error(), and complete() methods that is called when there’s an interaction with the observable. You execute an observable by subscribing to it.

Observables have two methods: subscribe and unsubscribe. RxJS observables allow you to publish events.

RxJS has some core features that help handle async implementation: It can be used in your browser or with Node.js. Reactive Extensions for JavaScript, or RxJS, is a reactive library used to implement reactive programming to deal with async implementation, callbacks, and event-based programs. These libraries are downloaded APIs that provide functionalities for reactive tools like observers and operators. The reactive paradigm can be used in many different languages through the use of reactive libraries.

Rx js