Assign validator target

        

<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
  <mx:Script>
    
    import flash.events.Event;
    private function performValidation(eventObj:Event):void {
      zipV.listener=eventObj.currentTarget;
      zipV.validate(eventObj.currentTarget.text);
    }
    
  </mx:Script>
  <mx:ZipCodeValidator id="zipV" triggerEvent="" />
  <mx:TextInput id="shippingZip" focusOut="performValidation(event);" />
  <mx:TextInput id="billingZip" focusOut="performValidation(event);" />
</mx:Application>

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Assign validator target : Validator « Development « Flex

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