Validating real/integer numbers in Flex

Written for: Flex

Below is a short code to determine whether a number is real (floating). To find if a number is an integer, change the domain property in NumberValidator tag from “real” to “int”.

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" 
    layout="vertical">

    <mx:Script>
        <![CDATA[
            import mx.controls.Alert;
        ]]>
    </mx:Script>

    <mx:TextInput id="myTxtInput"/> 

    <mx:NumberValidator id="myNumberValidator"
        domain="real"
        source="{myTxtInput}"
        property="text"
        trigger="{myTxtInput}"
        triggerEvent="focusOut"
        valid="Alert.show('real number')"
        invalid="Alert.show('hmmm....unreal number?')"/>

</mx:Application>

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