Hi, When using 'beforeunload' event you need to use synchronous Ajax call. Additionally you need to prevent the default behavior of the JavaScript event to stop the leaving of the page.
Instead of doing your manual work in AbstractDefaultAjaxBehavior#renderHead() you can just use AjaxEventBehavior("beforeunload") On Mon, May 13, 2013 at 7:26 PM, raphw <rafael....@web.de> wrote: > I posted a question on StackOverflow on how I can receive a callback value > from a Java component using Ajax: > > > http://stackoverflow.com/questions/16527463/wicket-6-ajax-call-java-component-from-javascript-and-retreive-value > > Any help on this would be very appreciated since I am stuck on this one! > Thank you, Rafael > > > > -- > View this message in context: > http://apache-wicket.1842946.n4.nabble.com/Wicket-6-Ajax-Call-Java-component-from-JavaScript-and-retreive-value-tp4658754.html > Sent from the Users forum mailing list archive at Nabble.com. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > For additional commands, e-mail: users-h...@wicket.apache.org > > -- Martin Grigorov Wicket Training & Consulting http://jWeekend.com <http://jweekend.com/>