RadioButton click event handler

        
<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
    <mx:Script>
        
        import flash.events.Event;
        private function handleA(event:Event):void {
            myTA.text="A";
        }
        private function handleB(event:Event):void {
            myTA.text="B";
        }
        private function handleC(event:Event):void {
            myTA.text="C";
        }
      
    </mx:Script>
    <mx:RadioButton groupName="cardtype" id="americanExpress" label="American Express" width="150" click="handleA(event);" />
    <mx:RadioButton groupName="cardtype" id="masterCard" label="MasterCard" width="150" click="handleB(event);" />
    <mx:RadioButton groupName="cardtype" id="visa" label="Visa" width="150" click="handleC(event);" />
    <mx:TextArea id="myTA" />
</mx:Application>

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RadioButton click event handler : Button Event « Components « Flex

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