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<div class="intro">

<p>DataSource's Pollable extension enables polling functionality on all your DataSource instances.</p>

</div>

<div class="example">

{{>datasource-polling-source}}

</div>

<p>Include the `datasource-pollable` extension in your `Y.use()` statement to add the `setInterval()`, `clearInterval()`, and `clearAllInterval()` methods to all your DataSource instances.</p>

```

YUI().use("datasource-function", "datasource-polling", function(Y) {

});

```