last

RxJS 5 last

HTML

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

JavaScript

const subject = new Rx.ReplaySubject();

subject.next(1);
subject.next(2);
subject.next(3);
subject.next(4);

subject.subscribe(num => console.log(num));

var lastObserver = subject.last();
lastObserver.subscribe(num => console.log('last: ' + num));