RxJS
Think of RxJS as Lodash for events. Compose asynchronous and event-based programs using observable sequences with a powerful suite of operators.
Get Started
Start building reactive applications with RxJS in minutes.Installation
Install RxJS using npm, yarn, or pnpm
Quickstart
Create your first Observable in under 5 minutes
Core Concepts
Master the fundamental building blocks of reactive programming.Observable
Invokable collections of future values or events
Observer
Callbacks that listen to Observable values
Operators
Pure functions for transforming sequences
Subject
Multicast values to multiple Observers
Subscription
Manage Observable execution lifecycle
Scheduler
Control concurrency and timing
Powerful Operators
Transform, filter, and combine streams with 100+ operators.Creation Operators
Create Observables from events, promises, arrays, and more
Transformation Operators
Transform emitted values with map, scan, buffer, and switchMap
Filtering Operators
Select specific values with filter, take, debounce, and distinct
Combination Operators
Combine multiple streams with merge, concat, and zip
Why RxJS?
Composable
Chain operators to build complex async logic from simple, reusable pieces
Powerful Error Handling
Gracefully handle errors with retry, catchError, and fallback strategies
Cancellation Built-in
Cancel async operations cleanly with unsubscribe
Tree-shakeable
Modern modular architecture keeps your bundle size minimal