Leave page prompt on postback

[Charles]

I have noticed that every time that a post-back is triggered with RadControls, I receive an 'Are  you sure you want to leave this page?' prompt in Firefox.  So far I have tested it with the RadListBox and the RadTabStrip/RadMultiPage controls. 

Is there a way to stop this prompt from displaying every time I click a control?

[Shinu]

Hi Charles,

Please try the following JavaScript.

JavaScript:

<script type="text/javascript">
    window.onbeforeunload = function () {
        saveFormData();
        return null;
    }
    function saveFormData() {
        console.log('saved');
    }
</script>

Thanks,
Shinu.