[Solved] Given this Angular service method:getData() { return this.http.get('/api/data').pipe( catchError(err => { console.error('Error:', err.... }What will the component receive if the HTTP request fails? | Angular

Angular - HTTP Client

Given this Angular service method:

getData() {
  return this.http.get('/api/data').pipe(
    catchError(err => {
      console.error('Error:', err.status);
      return of([]);
    })
  );
}

What will the component receive if the HTTP request fails?

AAn empty array

BAn error object

CUndefined

DNull

Step-by-Step Solution

Solution:

Step 1: Analyze catchError return value
The catchError operator returns of([]) which emits an empty array observable on error.
Step 2: Understand observable emission to component
The component subscribing to this method will receive the empty array instead of an error.
Final Answer:
An empty array -> Option A
Quick Check:
catchError returns fallback observable = empty array [OK]

Quick Trick: catchError can return fallback data to avoid errors in components [OK]

Common Mistakes:

MISTAKES

Expecting error object instead of fallback data
Assuming undefined or null is returned
Ignoring catchError fallback return

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Given this Angular service method:

Step 1: Analyze catchError return value

Step 2: Understand observable emission to component

Final Answer:

Quick Check:

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