What is RxJS and use of this?

The full form of RxJS is Reactive Extension for Javascript . It is a javascript library that uses observables to work with reactive programming that deals with asynchronous data calls, callbacks and event-based programs. RxJS can be used with other Javascript libraries and frameworks.

Operators are basically pure functions, that transform information into the observables stream . it always creates new observables, often based on the current observables. It allows any complex code to be easily composed in a declarative manner.

Reactive Extensions for JavaScript, or RxJS, is a JavaScript library that uses observables for reactive programming. It can be used with other JavaScript libraries and frameworks, and it integrates well into Angular .17 Haz 2021

RxJS (Reactive Extensions for JavaScript) is a library for reactive programming using observables that makes it easier to compose asynchronous or callback-based code .