Return value from subscribe angular

The return value from the subscribe method in Angular is an object of type Subscription.
This object represents the ongoing subscription and allows you to handle the result of an asynchronous operation, such as an HTTP request or an event.

When you subscribe to an observable, you can specify a callback function to handle the emitted values.
This callback function will be invoked whenever a new value is emitted by the observable.

Here is an example that demonstrates how to use the subscribe method in Angular:

    
      import { Component, OnInit } from '@angular/core';
      import { Observable } from 'rxjs';

      @Component({
        selector: 'app-example',
        template: `
          Get Data
          
Data: {{ data }}
        `,
      })
      export class ExampleComponent implements OnInit {
        data: string;

        ngOnInit() {
        }

        getData() {
          // Simulating an HTTP request
          const dataObservable: Observable = new Observable((observer) => {
            setTimeout(() => {
              observer.next('Hello, world!');
              observer.complete();
            }, 2000);
          });

          const subscription = dataObservable.subscribe((value: string) => {
            this.data = value;
          });

          // Unsubscribe after 5 seconds
          setTimeout(() => {
            subscription.unsubscribe();
          }, 5000);
        }
      }
    
  

In the above example, we have a button labeled “Get Data” that triggers an HTTP request simulation using the Observable class.
The data emitted by the Observable will be assigned to the “data” property of the component.
The subscribe method is called with a callback function that assigns the emitted value to the “data” property.
After 5 seconds, we unsubscribe from the ongoing subscription to stop receiving further values.