Untitled

var advisor = Titanium.UI.createWebView({
	url: 'advisor.html',
});

Ti.App.addEventListener('fromWebView', function(e){
    var testVariable = e.data;
});


<!DOCTYPE html>
<html>
<body>
	<ins data-revive-zoneid="1" data-revive-id="a8fd1f1dd1d9f38931672573f40cf0b1"></ins>
	<script async src="//adv.cagliariairport.eu/www/delivery/asyncjs.php"></script>
	<script type="text/javascript">
     $(document).ready(function(){
          var testVariable = someMethod();
          //respond the fetch data to the main window via fireEvent
          Ti.App.fireEvent( 'fromWebView', { data : testVariable } );
     });
	</script>
</body>
</html>