signature: timeInterval(scheduler: *): Observable<TimeInterval<any>> | WebSocketSubject<T> | Observable<T>

Convert an Observable that emits items into one that emits indications of the amount of time elapsed between those emissions

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Examples

Example 1: Time between mouse clicks

( StackBlitz )

// RxJS v6+
import { fromEvent } from 'rxjs';
import { timeInterval, tap } from 'rxjs/operators';
​
fromEvent(document, 'mousedown')
  .pipe(
    timeInterval(),
    tap(console.log)
  )
  .subscribe(
    i =>
      (document.body.innerText = `milliseconds since last click: ${i.interval}`)
  );

Related Recipes

• ​Click Ninja Game​

Additional Resources

• ​timeInterval​

  📰 - Official docs

📁 Source Code: https://github.com/ReactiveX/rxjs/blob/master/src/internal/operators/timeInterval.ts​