Angular Academy · Lesson

Error Handling

Effectively manage HTTP errors.

Lesson 2 of 310 steps

Error Handling is a free Angular Academy lesson on CoddyKit. This is lesson 2 of 3. Any 3 lessons of this learning path are free to read in full — after that, CoddyKit PRO unlocks every lesson, plus hands-on practice with a built-in code editor and a 24/7 AI tutor. It is part of the Angular Academy learning path, and your progress syncs across the web and the CoddyKit app. The Angular Academy course includes 3 lessons in total.

Error Handling in Angular HTTP Requests

Learn how to handle HTTP errors gracefully in your Angular applications.

Why Handle Errors?

Error handling is critical to managing issues that may arise during HTTP communication, such as network errors or server issues.

Catching HTTP Errors

Use the catchError operator from RxJS to handle HTTP request errors:

this.http.get('api/data').pipe(
  catchError(this.handleError)
).subscribe();

The catchError Operator

Use catchError to intercept HTTP errors:

catchError(error => of(`Error: ${error.status}`));

Error Handling Function

Create a reusable function to handle errors globally:

private handleError(error: HttpErrorResponse) {
  return throwError(() => new Error('Something went wrong'));
}

Error Types

Client-side errors (network issues)
Server-side errors (response errors)

Error Handling Best Practices

Inform users clearly about errors
Log errors for debugging purposes
Provide retry options if appropriate

Retrying Requests

Automatically retry failed HTTP requests using the retry() operator:

this.http.get('api/data').pipe(retry(3)).subscribe();

Summary

You've learned how to handle errors effectively with Angular's HTTP Client. Great work!

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Frequently Asked Questions

Is the “Error Handling” lesson free?

Yes — any 3 lessons of the Angular Academy learning path, including “Error Handling”, are free to read in full here on the web. After that, CoddyKit PRO unlocks every lesson, plus interactive practice with a built-in code editor and a 24/7 AI tutor. The Angular Academy course includes 3 lessons in total.

What will I learn in “Error Handling”?

Effectively manage HTTP errors. You practise Angular Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.

Do I need any experience to start Angular Academy?

No prior experience is required. Angular Academy on CoddyKit is structured for beginners through advanced learners, so you can start here or from the beginning and move at your own pace. This is lesson 2 of 3.

How long does the “Error Handling” lesson take?

Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.

Can I write and run code in this Angular Academy lesson?

Yes. Every Angular Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.

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