Welcome to the RxJS Interview Guide for Angular Developers — a curated, open-source resource designed to help you master RxJS operators and crack interviews with confidence. Whether you're brushing up for a job interview or deepening your understanding of reactive programming in Angular, this guide has you covered.
You can explore the full guide as a searchable, categorized site at RxJS Angular interview guide.
This guide focuses on frequently used RxJS operators in real-world Angular applications, categorized for easy access and faster learning. For each operator, you'll find:
- ✅ Clear explanation of what the operator does
- 🔁 Practical usage in Angular contexts
- 💡 Code snippets with real examples
- 🧠 Interview-style questions and answers
- ✨ Tips, gotchas, and best practices
Operators are grouped into the following sections:
- Creation Operators (e.g.,
of,from,interval,timer) - Transformation Operators (e.g.,
map,switchMap,mergeMap,concatMap,exhaustMap) - Filtering Operators (e.g.,
filter,take,debounceTime,distinctUntilChanged) - Combination Operators (e.g.,
combineLatest,forkJoin,zip,withLatestFrom) - Utility Operators (e.g.,
tap,delay,finalize) - Error Handling Operators (e.g.,
catchError,retry,retryWhen) - Multicasting Operators (e.g.,
share,shareReplay,publishReplay)
And more as we grow!
- Angular developers preparing for technical interviews
- Engineers looking to refresh or deepen RxJS knowledge
- Mentors and interviewers creating technical assessments
- Anyone exploring RxJS in Angular in a structured, hands-on way
Have a great example, question, or operator to add? PRs are welcome! Let’s make this the go-to resource for RxJS interview prep in the Angular world.