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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 source = Rx.Observable.interval(100)
    .windowWithTime(500, 100)
    .take(3);
​
var subscription = source.subscribe(
    function (child) {
​
        child.toArray().subscribe(
            function (x) {
                console.log('Child Next: ' + x.toString());
            },
            function (err) {
                console.log('Child Error: ' + err);   
            },
            function () {
                console.log('Child Completed');   
            }
        );
    },
    function (err) {
        console.log('Error: ' + err);   
    },
    function () {
        console.log('Completed');   
    });
​
// => Completed 
// => Child Next: 0,1,2,3,4
// => Child Completed 
// => Child Next: 0,1,2,3,4,5
// => Child Completed 
// => Child Next: 1,2,3,4,5,6
// => Child Completed
Output

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