RxJS Crash Course - Reactivex From Zero to Hero

Name: RxJS Crash Course - Reactivex From Zero to Hero
Rating: 4.7 (82 reviews)

Prepare for RxJS with and without Angular. Learn RxJS skills and concepts.

Created byOleksandr Kocherhin

Last updated 2/2026

English

What you'll learn

Be very well prepared for any RxJS usages you will have
Excel in a wide variety of RxJS possibilities
Strengthen you RxJS skills and your knowledge of important concepts
Learn the skills, concepts, and techniques of RxJS
Feel very confident in RxJS projects

Course content

6 sections • 43 lectures • 2h 31m total length

Why do we need RxJS?2:12
Explore how RxJS enables reactive programming by turning any data into streams you can combine and transform for synchronous or asynchronous data, note it works with React, Vue, Angular.
Editor0:30
Prettier1:01
I prepared source code for you0:14
Setting up a project3:53

What is this section about?0:04
Observable and observer1:33
Of and From methods5:13
Explore RxJS of and from operators to create observables, subscribe to a data stream, and render numbers in an Angular app using simple examples.
Converting Javascript data to observables6:10
Observables vs Promises4:40
Subscribing with next, error and complete2:35
Creating custom observables3:29
Creating custom subscriber3:06
Learn how to implement a custom observer as a reusable class in RxJS, with next, error, and complete handlers for a numbers stream from 1 to 5.
Observables are async2:47

RxJS operator decision tree2:52
Combine latest method5:58
Do it yourself: filter map task3:33
Forkjoin method1:56
With latest from method2:29
Distinct operators5:18
Explore distinct operators in RxJS to cache streams and emit unique values, using distinct by age, distinct until changed, and distinct until key changed with practical user examples.
Do it yourself: cars task2:31
Debounce operators4:07
Throttle operators2:00
Tap method2:35

Rxjs subject3:29
RxJS behavior subject4:16
Explore how a behavior subject differs from a subject by prefilling a default value, using get value and next to manage a shared array of users in an Angular service.
Do it yourself: Behavior subject task6:36
Create and manage a todo service using rxjs behavior subject to store an array of todos, with add todo, remove todo, and toggle todo by id.
RxJS Replay subject2:32
Maps differences8:13
Do it yourself - Observables hell3:56
Retry method2:56

Requirements

Javascript knowledge

Description

This course is great preparation for any RxJS that you may have coming up. Reactive programming needs a lot amount of knowledge, but the best way to prepare for it is a lot of practice! In this course you will learn everything that come from real RxJS projects and reactive programming. There are no excersises that nobody asks here. In every video you will learn something useful that you will write every day. We will take a deep dive into the skills, concepts, and techniques that are required to solve each problem.

When you have completed this course you will have mastered RxJS on a high level and you will also have learned the concepts, skills, and techniques, like creating custom Observables and using things like caching or combining streams that are necessary for you to excel in any reactive programming. You will feel very confident working with RxJS in any project you will have. On top of all this, you will strengthen your reactive programming skills and RxJS fundamentals in overall.

Core topics of the course:

Observables and Observers
Converting JS data to observables
Mapping and filtering streams
Working with API
Combining streams
Working with RxJS subjects
Caching streams
Solving callback hell with observables

Who this course is for:

Anyone who wants to learn RxJS
Anyone who wants to make RxJS code safe
Anyone who wants to strengthen their RxJS skills and knowledge
Anyone who wants to improve their code

RxJS Crash Course - Reactivex From Zero to Hero

What you'll learn

Explore related topics

Course content

Introduction5 lectures • 8min

RxJS Basics9 lectures • 30min

Most important operators10 lectures • 48min

Advanced RxJS10 lectures • 33min

Rxjs subjects7 lectures • 32min

What's next?2 lectures • 1min

Requirements

Description

Who this course is for: