RxJS Playground

A blank canvas to play / experiment with RxJS: https://github.com/Reactive-Extensions/RxJS

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/rxjs/4.0.7/rx.all.js"></script>

Babel + JSX

const xs  = Rx.Observable
	.interval(0)
  //.share();

xs.combineLatest(xs, (a,b) => [a,b])
	.filter(ab => ab[1] > ab[0])
  .take(1)
  .subscribe(ab => alert(ab));