How can I handle errors in RxJS?

How can I handle errors in RxJS?

In RxJS, you can handle errors using operators like catchError and retry. Would you like an example?

Yes, please provide an example using catchError.

Sure! Here's a simple example:

import { of, throwError } from 'rxjs';
import { catchError } from 'rxjs/operators';

const source$ = throwError('Error!');

source$.pipe(
  catchError(err => {
    console.error(err);
    return of('Error handled!');
  })
).subscribe(console.log);

This will log 'Error!' and then 'Error handled!'. Do you need more details?

What about using the retry operator?

The retry operator can be used to re-subscribe to the observable a specified number of times before failing. Here's an example:

import { of, throwError } from 'rxjs';
import { retry, catchError } from 'rxjs/operators';

const source$ = throwError('Error!');

source$.pipe(
  retry(2),
  catchError(err => of('Error handled!'))
).subscribe(console.log);

This will attempt to retry the observable twice before handling the error.