RxJS Playground
A blank canvas to play / experiment with RxJS: https://github.com/Reactive-Extensions/RxJS
by ablochs
HTML
<script src="https://cdnjs.cloudflare.com/ajax/libs/rxjs/4.0.7/rx.all.js"></script>
JavaScript
var arr = [1,2,3];
var source = Rx.Observable.ofArrayChanges(arr);
var subscription = source.subscribe(
function (x) { console.log('Next: ' + x); },
function (e) { console.log('Error: ' + e); },
function ( ) { console.log('Completed'); });
arr.push(4)