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<!DOCTYPE html>
<html>
<head>
<script src="//code.jquery.com/jquery-2.1.0.min.js"></script>
  <title>JS Bin</title>
  <script src="//cdn.jsdelivr.net/rsvp/3.0.6/rsvp.js"></script>
  <script src="//cdnjs.cloudflare.com/ajax/libs/rxjs/2.2.28/rx.all.min.js"></script>
</head>
<body>
  <input id="input" type="text">
</body>
</html>
 
var openings = Rx.Observable.interval(500);
​
// Convert the window to an array
var source = Rx.Observable.timer(0, 100)
    .window(openings)
    .take(3)
    .selectMany(function (x) { return x.toArray(); });
​
var subscription = source.subscribe(
    function (x) {
        console.log('Next: ' + x.toString());
    },
    function (err) {
        console.log('Error: ' + err);   
    },
    function () {
        console.log('Completed');   
    });
​
// => Next: 0,1,2,3,4 
// => Next: 5,6,7,8,9,10 
// => Next: 11,12,13,14,15 
// => Completed
Output

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