[Solved] Given this effect code snippet:loadData$ = createEffect(() => this.actions$.pipe( ofType(loadData), switchMap(() => this.api.... | Angular

Angular - State Management

Given this effect code snippet:

loadData$ = createEffect(() => this.actions$.pipe(
  ofType(loadData),
  switchMap(() => this.api.getData()),
  map(data => loadDataSuccess({ data })),
  catchError(() => of(loadDataFailure()))
));

What happens when the loadData action is dispatched?

AThe API call is ignored and no action is dispatched

BThe effect causes a syntax error and stops

COnly <code>loadDataFailure</code> action is dispatched immediately

DThe API call is made, and on success, <code>loadDataSuccess</code> action is dispatched

Step-by-Step Solution

Solution:

Step 1: Understand the effect flow
When loadData action is dispatched, the effect listens and triggers the API call via switchMap.
Step 2: Analyze success and error handling
On success, map dispatches loadDataSuccess with data; on error, catchError dispatches loadDataFailure.
Final Answer:
The API call is made, and on success, loadDataSuccess action is dispatched -> Option D
Quick Check:
Effect triggers API and dispatches success or failure [OK]

Quick Trick: Effects dispatch success or failure actions after API calls [OK]

Common Mistakes:

Assuming no action is dispatched after API call
Confusing map with catchError behavior
Thinking effect causes syntax error

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More Angular Quizzes

Given this effect code snippet:

Step 1: Understand the effect flow

Step 2: Analyze success and error handling

Final Answer:

Quick Check:

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