import flash.external.ExternalInterface; import mx.controls.Alert; public function initApp():void { this.setupCallbacks(); } // Called from Javascript public function callFromJavascript(s:String):void { Alert.show(s,"Flex Alert"); } // Call to Javascript private function sendToJavaScript():void { ExternalInterface.call("getFromFlex",valueForJavascript.text); } // Setup Callbacks private function setupCallbacks():void{ ExternalInterface.addCallback("callFromJavascript",callFromJavascript); }