throttle
Emits a value from the source Observable, then ignores subsequent source values for a duration determined by another Observable, then repeats this process.
It's like throttleTime, but the silencing duration is determined by a second Observable.
throttle
emits the source Observable values on the output Observable
when its internal timer is disabled, and ignores source values when the timer
is enabled. Initially, the timer is disabled. As soon as the first source
value arrives, it is forwarded to the output Observable, and then the timer
is enabled by calling the durationSelector
function with the source value,
which returns the "duration" Observable. When the duration Observable emits a
value, the timer is disabled, and this process repeats for the
next source value.
Example
Emit clicks at a rate of at most one click per second
import { fromEvent, throttle, interval } from 'rxjs';
const clicks = fromEvent(document, 'click');
const result = clicks.pipe(throttle(() => interval(1000)));
result.subscribe(x => console.log(x));
§Parameters
A function that receives a value from the source
Observable, for computing the silencing duration for each source value,
returned as an ObservableInput
.
A configuration object to define leading
and trailing
behavior. Defaults to { leading: true, trailing: false }
.