Use BrowserManager
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="parseURL()"> <mx:Script> import mx.utils.ObjectUtil; import mx.managers.IBrowserManager; import mx.managers.BrowserManager; import mx.utils.URLUtil; private function parseURL() : void { var bm:IBrowserManager = BrowserManager.getInstance(); bm.init(); output.text += "Full URL" + bm.url + " Base URL:" + bm.base + "\n"; output.text += "URL Fragment:" + bm.fragment + "\n"; } </mx:Script> <mx:TextArea id="output" left="10" top="10" bottom="10" right="10"/> </mx:Application>