Rxjs quiz

Test your Rxjs knowledge with a free interactive quiz — 50 questions with answers and explanations. No signup needed to play.

`debounceTime(300)` — what does it do?

1. `debounceTime(300)` — what does it do?
2. What does a `Subject` give you over a plain Observable?
3. What does `take(3)` do?
4. What does `startWith(value)` do?
5. What does `of(1, 2, 3)` produce?
6. `distinctUntilChanged()` — what does it do?
7. Why must you `unsubscribe()` from an Observable subscription?
8. `tap(fn)` is used for:
9. How do you concatenate two Observables sequentially?
10. What is the difference between a hot and a cold Observable?
11. `from([1, 2, 3])` vs `of([1, 2, 3])` — what is the difference?
12. What does `merge(a, b)` do?

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