bufferWhen

RxJS 5 bufferWhen

by Brian Troncone

HTML

<script src="https://npmcdn.com/@reactivex/[email protected]/dist/global/Rx.umd.js"></script>

JavaScript

//emit value every 1 second
const oneSecondInterval = Rx.Observable.interval(1000);
//return an observable that emits value every 5 seconds
const fiveSecondInterval = () => Rx.Observable.interval(5000);
//every five seconds, emit buffered values
const bufferWhenExample = oneSecondInterval.bufferWhen(fiveSecondInterval);
//log values
//ex. output: [0,1,2,3]...[4,5,6,7,8]
const subscribe = bufferWhenExample.subscribe(val => console.log('Emitted Buffer: ', val));