RxJS Deep Dive: Observable, Observer & Top Operators (mergeMap, switchMap, concatMap, exhaustMap)
Welcome to ZeroBugZone!
In today’s video, we take a Deep Dive into RxJS — covering Observable, Observer, and the 4 MOST important operators used in Angular and JavaScript:
mergeMap – Parallel API calls
switchMap – Best for live search, cancels previous request
concatMap – Executes requests one-by-one
exhaustMap – Prevents double click / multiple submissions
You will learn when to use which operator, real-world examples, and the most common Angular interview questions.