How can you combine multiple HTTP request observables in Angular to wait for all responses before processing the data?

hard🧠 Conceptual Q9 of 15

Angular - RxJS Operators

AUse forkJoin to wait for all HTTP observables to complete and emit their last values

BUse combineLatest to get the latest response from each HTTP observable continuously

CUse merge to process each HTTP response as it arrives without waiting

DUse switchMap to combine all HTTP observables into one

Step-by-Step Solution

Solution:

Step 1: Understand HTTP observables complete after response
HTTP requests emit once and complete after response.
Step 2: Choose operator that waits for all completions
forkJoin waits for all observables to complete and then emits combined last values, ideal for waiting all HTTP responses.
Final Answer:
Use forkJoin to wait for all HTTP observables to complete and emit their last values -> Option A
Quick Check:
Wait for all HTTP responses = A [OK]

Quick Trick: forkJoin waits for all HTTP requests to complete [OK]

Common Mistakes:

MISTAKES

Master "RxJS Operators" in Angular

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More Angular Quizzes