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take
function stable operator
Emits only the first count values emitted by the source Observable.
take<T>(count: number): MonoTypeOperatorFunction<T>
Parameters
count |
number |
The maximum number of |
Returns
MonoTypeOperatorFunction<T>: A function that returns an Observable that emits only the first count values emitted by the source Observable, or all of the values from the source if the source emits fewer than count values.
Description
Takes the first count values from the source, then completes.
take returns an Observable that emits only the first count values emitted by the source Observable. If the source emits fewer than count values then all of its values are emitted. After that, it completes, regardless if the source completes.
Example
Take the first 5 seconds of an infinite 1-second interval Observable
import { interval, take } from 'rxjs';
const intervalCount = interval(1000);
const takeFive = intervalCount.pipe(take(5));
takeFive.subscribe(x => console.log(x));
// Logs:
// 0
// 1
// 2
// 3
// 4
See Also
© 2015–2022 Google, Inc., Netflix, Inc., Microsoft Corp. and contributors.
Code licensed under an Apache-2.0 License. Documentation licensed under CC BY 4.0.
https://rxjs.dev/api/operators/take