Скачать или смотреть How to Consume Rest API using Angular Part I

To consume a REST API using Angular, you can follow these steps:

Import the HttpClientModule in the root module (app.module.ts) of your Angular application.
Create a service that will handle the communication with the REST API. This service should have a method that uses the HttpClient class to send HTTP requests to the API. The HttpClient class provides methods for sending GET, POST, PUT, and DELETE requests.
Inject the service in the component where you want to consume the REST API.
Call the method of the service to send the HTTP request and handle the response.
Here is an example of a service that consumes a REST API using the HttpClient class:

In this example, the UserService class has methods for sending GET, POST, PUT, and DELETE requests to the /api/users endpoint of a REST API. The HttpClient class is used to send the requests and handle the responses.

You can then inject this service into a component and call its methods to consume the REST API: