Event target id
<?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical"> <mx:Script> import mx.controls.*; private function clickHandler(event:MouseEvent):void{ myLabel.text = event.type + ": " + myInput.text; Alert.show("Text Entered by the\n" + event.target.id + " button.","Alert Box", Alert.OK); } </mx:Script> <mx:TextInput id="myInput" width="150"/> <mx:Label id="myLabel" width="150"/> <mx:Button id="myButton1" label="myButton1" click="clickHandler(event)"/> <mx:Button id="myButton2" label="myButton2" click="clickHandler(event)"/> </mx:Application>