dataToFromWebViewTitanium.js

//Send data to webView in Titanium
var timeGraph = Ti.UI.createWebView({ url:'graphs/timeGraph.html', touchEnabled:true });        

timeGraph.addEventListener('load', function(){    
  Ti.App.fireEvent('graphCareer', series);
});

<!-- Receive data in webView -->
<script type="text/javascript">    
  Ti.App.addEventListener('graphCareer',function(series){        
  alert(series);    
});
</script>

<!-- Send data back to Titanium from the webView -->
<script type="text/javascript">    
  Ti.App.fireEvent('graphPopup', {a:data1, b:data2, c:data3 });
</script>

//Receive data from webView in Titanium
Ti.App.addEventListener('graphPopup', function(data){    
  Ti.API.info(data.a+' / '+data.c+' / '+data.c); 
});