HttpClient questions

Errors in Angular's `HttpClient` can be handled using the `catchError` operator from RxJS. By including `catchError` in the observable pipeline, you can intercept HTTP errors and handle them appropriately. Typically, you would use `catchError` to log errors, display user-friendly messages, or perform retry logic. For example, you can catch HTTP errors in a service method and return a default value or rethrow the error with additional context, ensuring that your application can handle failures gracefully and maintain a smooth user experience.

Angular's `HttpClient` is a service provided by the `@angular/common/http` package that simplifies making HTTP requests and handling responses. It offers a modern, promise-based API for performing CRUD operations and interacting with RESTful services. `HttpClient` supports various methods such as `GET`, `POST`, `PUT`, and `DELETE`, and provides features for handling request and response data, including automatic JSON parsing and error handling. By using `HttpClient`, developers can efficiently manage network communication and integrate external APIs or backend services into their Angular applications.