Flex使用NumberValidator验证integer

The following example shows how you can validate a number as an integer or real (floating point) number by setting the domain property on a NumberValidator instance.

<?xml version="1.0" encoding="utf-8"?> <!-- http://blog.flexexamples.com/2008/08/30/validating-integers-using-the-numbervalidator-class/ --> <mx:Application name="NumberValidator_domain_test"         xmlns:mx="http://www.adobe.com/2006/mxml"         layout="vertical"         verticalAlign="middle"         backgroundColor="white">     <mx:Script>         <![CDATA[             import mx.controls.Alert;             import mx.events.ValidationResultEvent;             private function numberValidator_invalid(evt:ValidationResultEvent):void {                 Alert.show(evt.message);             }             private function numberValidator_valid(evt:ValidationResultEvent):void {                 Alert.show(evt.type);             }         ]]>     </mx:Script>     <mx:NumberValidator id="numberValidator"             domain="{comboBox.selectedItem}"             source="{textInput}"             property="text"             trigger="{button}"             triggerEvent="click"             invalid="numberValidator_invalid(event);"             valid="numberValidator_valid(event);" />     <mx:ApplicationControlBar dock="true">         <mx:Form styleName="plain">             <mx:FormItem label="domain:">                 <mx:ComboBox id="comboBox"                         dataProvider="[real,int]" />             </mx:FormItem>         </mx:Form>     </mx:ApplicationControlBar>     <mx:Form defaultButton="{button}">         <mx:FormItem direction="horizontal">             <mx:TextInput id="textInput"                     restrict="0-9.-"                     maxChars="10" />             <mx:Button id="button"                     label="validate" />         </mx:FormItem>     </mx:Form> </mx:Application>

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