JavaScript Internals (521 Qs)•Part 7: Execution Context, Functional JS & V8 Engine (404 - 463)
What is RxJS
RxJS (Reactive Extensions for JavaScript) is a library for implementing reactive programming using observables that makes it easier to compose asynchronous or callback-based code. It also provides utility functions for creating and working with observables.
Practical Code Example
javascript
// RxJS (Reactive Extensions for JavaScript): Library for reactive programming using Observables:
import { fromEvent } from 'rxjs';
import { map, filter } from 'rxjs/operators';
// fromEvent(document, 'click')
// .pipe(map(e => e.clientX), filter(x => x > 200))
// .subscribe(x => console.log('Clicked at X:', x));