How do you add event listeners in mxml components. Now AS3 components

Question :How do you add event listeners in mxml components. Now AS3 components?
Answer :1) addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0,
useWeakReference:Boolean = false):void
2) removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void
3) dispatchEvent(event:Event):Boolean
4) hasEventListener(type:String):Boolean
5) willTrigger(type:String):Boolean