Adobe® Flex® 4 Language Reference
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mx.formatters 
CurrencyFormatter 
Packagemx.formatters
Classpublic class CurrencyFormatter
InheritanceCurrencyFormatter Inheritance Formatter Inheritance Object

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

The CurrencyFormatter class formats a valid number as a currency value. It adjusts the decimal rounding and precision, the thousands separator, and the negative sign; it also adds a currency symbol. You place the currency symbol on either the left or the right side of the value with the alignSymbol property. The currency symbol can contain multiple characters, including blank spaces.

If an error occurs, an empty String is returned and a String that describes the error is saved to the error property. The error property can have one of the following values:

  • "Invalid value" means an invalid numeric value is passed to the format() method. The value should be a valid number in the form of a Number or a String.
  • "Invalid format" means one of the parameters contains an unusable setting.

MXML SyntaxexpandedHide MXML Syntax

The <mx:CurrencyFormatter> tag inherits all of the tag attributes of its superclass, and adds the following tag attributes:

  <mx:CurrencyFormatter
    alignSymbol="left|right" 
    currencySymbol="$"
    decimalSeparatorFrom="."
    decimalSeparatorTo="."
    precision="-1"
    rounding="none|up|down|nearest"
    thousandsSeparatorFrom=","
    thousandsSeparatorTo=","
    useNegativeSign="true|false"
    useThousandsSeparator="true|false"
 />  
  

View the examples

See also



Public Properties
 PropertyDefined By
  alignSymbol : String
Aligns currency symbol to the left side or the right side of the formatted number.
CurrencyFormatter
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
  currencySymbol : String
Character to use as a currency symbol for a formatted number.
CurrencyFormatter
  decimalSeparatorFrom : String
Decimal separator character to use when parsing an input string.
CurrencyFormatter
  decimalSeparatorTo : String
Decimal separator character to use when outputting formatted decimal numbers.
CurrencyFormatter
 InheriteddefaultInvalidFormatError : String
[static] Error message for an invalid format string specified to the formatter.
Formatter
 InheriteddefaultInvalidValueError : String
[static] Error messages for an invalid value specified to the formatter.
Formatter
 Inheritederror : String
Description saved by the formatter when an error occurs.
Formatter
  precision : Object
Number of decimal places to include in the output String.
CurrencyFormatter
 Inheritedprototype : Object
[static] A reference to the prototype object of a class or function object.
Object
  rounding : String
How to round the number.
CurrencyFormatter
  thousandsSeparatorFrom : String
Character to use as the thousands separator in the input String.
CurrencyFormatter
  thousandsSeparatorTo : String
Character to use as the thousands separator in the output string.
CurrencyFormatter
  useNegativeSign : Object
If true, format a negative number by preceding it with a minus "-" sign.
CurrencyFormatter
  useThousandsSeparator : Object
If true, split the number into thousands increments by using a separator character.
CurrencyFormatter
Protected Properties
 PropertyDefined By
 InheritedresourceManager : IResourceManager
[read-only] A reference to the object which manages all of the application's localized resources.
Formatter
Public Methods
 MethodDefined By
  
Constructor.
CurrencyFormatter
  
[override] Formats value as currency.
CurrencyFormatter
 Inherited
Indicates whether an object has a specified property defined.
Object
 Inherited
Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.
Object
 Inherited
Indicates whether the specified property exists and is enumerable.
Object
 Inherited
Sets the availability of a dynamic property for loop operations.
Object
 Inherited
Returns the string representation of this object, formatted according to locale-specific conventions.
Object
 Inherited
Returns the string representation of the specified object.
Object
 Inherited
Returns the primitive value of the specified object.
Object
Protected Methods
 MethodDefined By
 Inherited
This method is called when a Formatter is constructed, and again whenever the ResourceManager dispatches a "change" Event to indicate that the localized resources have changed in some way.
Formatter
Property Detail

alignSymbol

property
alignSymbol:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Aligns currency symbol to the left side or the right side of the formatted number. Permitted values are "left" and "right".

The default value is "left".



Implementation
    public function get alignSymbol():String
    public function set alignSymbol(value:String):void

currencySymbol

property 
currencySymbol:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Character to use as a currency symbol for a formatted number. You can use one or more characters to represent the currency symbol; for example, "$" or "YEN". You can also use empty spaces to add space between the currency character and the formatted number. When the number is a negative value, the currency symbol appears between the number and the minus sign or parentheses.

The default value is "$".



Implementation
    public function get currencySymbol():String
    public function set currencySymbol(value:String):void

decimalSeparatorFrom

property 
decimalSeparatorFrom:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Decimal separator character to use when parsing an input string.

The default value is ".".



Implementation
    public function get decimalSeparatorFrom():String
    public function set decimalSeparatorFrom(value:String):void

decimalSeparatorTo

property 
decimalSeparatorTo:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Decimal separator character to use when outputting formatted decimal numbers.

The default value is ".".



Implementation
    public function get decimalSeparatorTo():String
    public function set decimalSeparatorTo(value:String):void

precision

property 
precision:Object

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Number of decimal places to include in the output String. You can disable precision by setting it to -1. A value of -1 means do not change the precision. For example, if the input value is 1.453 and rounding is set to NumberBaseRoundType.NONE, return 1.453. If precision is -1 and you set some form of rounding, return a value based on that rounding type.

The default value is -1.



Implementation
    public function get precision():Object
    public function set precision(value:Object):void

rounding

property 
rounding:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

How to round the number. In ActionScript, the value can be NumberBaseRoundType.NONE, NumberBaseRoundType.UP, NumberBaseRoundType.DOWN, or NumberBaseRoundType.NEAREST. In MXML, the value can be "none", "up", "down", or "nearest".

The default value is NumberBaseRoundType.NONE.



Implementation
    public function get rounding():String
    public function set rounding(value:String):void

See also

thousandsSeparatorFrom

property 
thousandsSeparatorFrom:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Character to use as the thousands separator in the input String.

The default value is ",".



Implementation
    public function get thousandsSeparatorFrom():String
    public function set thousandsSeparatorFrom(value:String):void

thousandsSeparatorTo

property 
thousandsSeparatorTo:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Character to use as the thousands separator in the output string.

The default value is ",".



Implementation
    public function get thousandsSeparatorTo():String
    public function set thousandsSeparatorTo(value:String):void

useNegativeSign

property 
useNegativeSign:Object

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

If true, format a negative number by preceding it with a minus "-" sign. If false, format the number surrounded by parentheses, for example (400).

The default value is true.



Implementation
    public function get useNegativeSign():Object
    public function set useNegativeSign(value:Object):void

useThousandsSeparator

property 
useThousandsSeparator:Object

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

If true, split the number into thousands increments by using a separator character.

The default value is true.



Implementation
    public function get useThousandsSeparator():Object
    public function set useThousandsSeparator(value:Object):void
Constructor Detail

CurrencyFormatter

()Constructor
public function CurrencyFormatter()

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Constructor.

Method Detail

format

()method
override public function format(value:Object):String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Formats value as currency. If value cannot be formatted, return an empty String and write a description of the error to the error property.

Parameters

value:Object — Value to format.

Returns
String — Formatted string. Empty if an error occurs.
CurrencyFormatterExample.mxml
<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the CurrencyFormatter. -->
<s:Application 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="."
                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="75%" height="75%"
            horizontalCenter="0" verticalCenter="0">
        <mx:Form left="10" right="10" top="10" bottom="10">
            <mx:FormItem label="Enter U.S. dollar amount:">
                <s:TextInput id="priceUS" text="" width="50%"/>
            </mx:FormItem>
            <mx:FormItem label="Formatted amount: ">
                <s:TextInput id="formattedUSPrice" text="" width="50%" editable="false"/>
            </mx:FormItem>
            <mx:FormItem>
                <s:Button label="Validate and Format" click="Format();"/>
            </mx:FormItem>
        </mx:Form>
    </s:Panel>

</s:Application>