tourdeflexmodules/src/spark/formatters/CurrencyFormatterExample.mxml

<?xml version="1.0" encoding="utf-8"?>
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<s:Module xmlns:fx="http://ns.adobe.com/mxml/2009"  
			   xmlns:s="library://ns.adobe.com/flex/spark" 
			   xmlns:mx="library://ns.adobe.com/flex/mx">
	
	<fx:Script>
		<![CDATA[
			
			import mx.events.ValidationResultEvent;			
			private var vResult:ValidationResultEvent;
			
			// Event handler to validate and format input.
			private function Format():void {
				
				vResult = numVal.validate();
				
				if (vResult.type==ValidationResultEvent.VALID) {
					var temp:Number=Number(priceUS.text); 
					formattedUSPrice.text= usdFormatter.format(temp);
				}
					
				else {
					formattedUSPrice.text="";
				}
			}
		]]>
	</fx:Script>

	<fx:Declarations>
		<mx:CurrencyFormatter id="usdFormatter" precision="2" currencySymbol="$" decimalSeparatorFrom="."  rounding="nearest"
							  decimalSeparatorTo="." useNegativeSign="true" useThousandsSeparator="true" alignSymbol="left"/>
		
		<mx:NumberValidator id="numVal" source="{priceUS}" property="text" allowNegative="true" domain="real"/>
	</fx:Declarations>
	
	
	<s:Panel title="CurrencyFormatter Example" width="100%" height="100%">
		
		<s:layout>
			<s:HorizontalLayout paddingLeft="10" paddingRight="10" paddingTop="10" paddingBottom="10"/>
		</s:layout>
		
		<mx:Form>
			<mx:FormItem label="Enter dollar amount:">
				<s:TextInput id="priceUS" text="" width="50%"/>
			</mx:FormItem>
			
			<mx:FormItem label="Formatted U.S. dollar amount: ">
				<s:Label id="formattedUSPrice" text="" />
			</mx:FormItem>
			
			<mx:FormItem>
				<s:Button label="Validate and Format" click="Format()"/>
			</mx:FormItem>
		</mx:Form>
		
	</s:Panel>
	
</s:Module>