AS3文本更改事件?

Flash也是如此,只需在文本组件中使用addEventListener:

`

        import spark.events.TextOperationEvent;

        protected function textinput1_changeHandler(event:TextOperationEvent):void
        {
            var digit:Number=new Number((event.currentTarget as TextInput).text);
            if(digit!=NaN)
                Alert.show(digit.toString());//do what you want

        }

    ]]>
</fx:Script>

<s:TextInput change="textinput1_changeHandler(event)"/>