RxJS
RxJS is a JavaScript library implementing ReactiveX with observables and operators for composing asynchronous and event-based programs.
Modern Angular
RxJS is a JavaScript and TypeScript library for composing asynchronous and event-based programs with observable sequences.
- How it is used
- Coordinates asynchronous events, HTTP calls, form changes, and evolving shared state in Angular applications.
- How deep it goes
- Explains observables, subjects, operators, Angular integration, and conversion with signals without detailing operator internals.
- Examples
- Uses HTTP requests, reactive-form valueChanges, authorization subjects, EventEmitter, async pipes, and custom operators.
- What you can do after
- Apply it via Angular HTTP, reactive forms, shared subjects, stream operators, and signal interoperability.
Functional Programming in JavaScript
A JavaScript library for composing asynchronous and event-based programs using observable sequences.
- How it is used
- Unifies asynchronous results and event sources behind subscribable observable streams.
- How deep it goes
- Defines observables and demonstrates subscription, filtering, mapping, event conversion, promises, and stream flattening without covering library internals.
- Examples
- Uses numeric ranges, generated squares, SSN input events, and student data loaded from a promise.
- What you can do after
- Apply RxJS to compose, transform, and subscribe to asynchronous values and browser events.
Read how Functional Programming in JavaScript explains RxJS →
Related concepts
- Angularused by · Angular is an open-source, TypeScript-based web application framework and platform for building structured, component-based client-side applications.
- observableuses · An observable is a source that emits a sequence of values or notifications over time to consumers that subscribe to it.
- operatoruses · An RxJS operator is a composable function that transforms or combines observables to produce a new observable or observable transformation.
- @angular/core/rxjs-interopused by · @angular/core/rxjs-interop is an Angular package providing interoperability APIs between Angular signals and RxJS observables.
- reactive programminguses · Reactive programming is a programming paradigm in which computations and outputs respond to asynchronous events or changing data by propagating changes through dependent operations.
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