Call a function every x seconds in Angular

This is a quick solution to retrieve the results every x seconds or minutes.
It creates a subscription to a RxJS function timer. This function creates an Observable that emit a result after a certain time.
Example
To call the http request every 10 seconds:
import {Subscription, timer} from 'rxjs';
timerSubscription: Subscription;
ngOnInit(): void {
// timer(0, 10000) call the function immediately and every 10 seconds
this.timerSubscription = timer(0, 10000).pipe(
map(() => {
this.loadData(); // load data contains the http request
})
).subscribe();
}
// don't forget to unsubscribe when the Observable is not necessary anymore
ngOnDestroy(): void {
this.timerSubscription.unsubscribe();
}