Bad Way of Handling Subscriptions

In my early Angular days, I would subscribe to observables without unsubscribing before the app was destroyed, possibly leading to a build up of memory leaks. For example:

class AppComponent implements OnInit {

  myData: MyDataType[];

  constructor(private httpClient: HttpClient){ }

  ngOnInit() {
    this.httpClient
      .get('/api/my-data')
      .subscribe((data: MyDataType[]) => {
        myData = data;
      });
  }
}

#angular-subscription #angular #typescript #angular-tutorial #rxjs