The timer() operator has the job of emitting values after a certain amount of time. It comes in two flavors: you either emit just one value after a number of milliseconds, or you keep on emitting values with a certain amount of delay between them. Let's look at the two different flavors available:
// time/timer.jslet stream$ = Rx.Observable.timer(1000);// delay with 500 millisecondslet streamWithDelay$ = Rx.Observable.timer(1000, 500) // emits 0 after 1000 milliseconds, then no morestream$.subscribe(data => console.log(data));streamWithDelay$.subscribe(data => console.log(data));
