Home > Web Front-end > JS Tutorial > Why is `http.get(...).map` not a function in my Angular HTTP GET request?

Why is `http.get(...).map` not a function in my Angular HTTP GET request?

Linda Hamilton
Release: 2024-11-28 20:48:12
Original
713 people have browsed it

Why is `http.get(...).map` not a function in my Angular HTTP GET request?

Angular HTTP GET with TypeScript: Resolving "http.get(...).map is not a function" Error

Scenario:

In an Angular application, an attempt to execute an HTTP GET operation fails with the error "http.get(...).map is not a function."

Cause:

The error indicates that the Angular app is missing the necessary import for the map operator, which is used to transform the response from the HTTP call.

Solution:

To resolve this error, one must import either of the following within the component (not the service):

  • Import the specific 'map' operator:
import 'rxjs/add/operator/map';
Copy after login
  • Import all operators (not recommended due to increased bundle size):
import 'rxjs/Rx';
Copy after login

Details:

The Angular HTTP service leverages RxJS for asynchronous operations, including handling HTTP requests. The map operator is a common operation used to transform the server response into the desired data format. Without the proper import, Angular cannot access the map operator.

Additional Notes:

  • Ensure that the updated code is executed in the component where the getHalls method is called.
  • For more context on this issue, refer to the following [GitHub issue](https://github.com/angular/angular/issues/3947).

The above is the detailed content of Why is `http.get(...).map` not a function in my Angular HTTP GET request?. For more information, please follow other related articles on the PHP Chinese website!

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template