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mx.validators 

CreditCardValidator  - AS3 Flex

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(Preview)
Packagemx.validators
Classpublic class CreditCardValidator
InheritanceCreditCardValidator Inheritance Validator Inheritance EventDispatcher Inheritance Object

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

The CreditCardValidator class validates that a credit card number is the correct length, has the correct prefix, and passes the Luhn mod10 algorithm for the specified card type. This validator does not check whether the credit card is an actual active credit card account.

You can specify the input to the CreditCardValidator in two ways:

  • Use the cardNumberSource and cardNumberProperty properties to specify the location of the credit card number, and the cardTypeSource and cardTypeProperty properties to specify the location of the credit card type to validate.
  • Use the source and property properties to specify a single Object. The Object should contain the following fields:
    • cardType - Specifies the type of credit card being validated.

      In MXML, use the values: "American Express", "Diners Club", "Discover", "MasterCard", or "Visa".

      In ActionScript, use the static constants CreditCardValidatorCardType.MASTER_CARD, CreditCardValidatorCardType.VISA, or CreditCardValidatorCardType.AMERICAN_EXPRESS CreditCardValidatorCardType.DISCOVER, or CreditCardValidatorCardType.DINERS_CLUB.

    • cardNumber - Specifies the number of the card being validated.

To perform the validation, it uses the following guidelines:

Length:

  1. Visa: 13 or 16 digits
  2. MasterCard: 16 digits
  3. Discover: 16 digits
  4. American Express: 15 digits
  5. Diners Club: 14 digits or 16 digits if it also functions as MasterCard
Prefix:
  1. Visa: 4
  2. MasterCard: 51 to 55
  3. Discover: 6011
  4. American Express: 34 or 37
  5. Diners Club: 300 to 305, 36 or 38, 51 to 55

MXML SyntaxexpandedHide MXML Syntax

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

  <mx:CreditCardValidator
    allowedFormatChars=" -" 
    cardNumberListener="Object specified by cardNumberSource"
    cardNumberProperty="No default"
    cardNumberSource="No default"
    cardTypeListener="Object specified by cardTypeSource"
    cardTypeProperty="No default"
    cardTypeSource="No default"
    invalidCharError= "Invalid characters in your credit card number. (Enter numbers only.)"
    invalidNumberError="The credit card number is invalid." 
    noNumError="No credit card number is specified."
    noTypeError="No credit card type is specified or the type is not valid." 
    wrongLengthError="Your credit card number contains the wrong number of digits." 
    wrongTypeError="Incorrect card type is specified." 
  />
  

View the examples

More examples

Related API Elements



Public Properties
 PropertyDefined By
  allowedFormatChars : String
The set of formatting characters allowed in the cardNumber field.
CreditCardValidator
  cardNumberListener : IValidatorListener
The component that listens for the validation result for the card number subfield.
CreditCardValidator
  cardNumberProperty : String
Name of the card number property to validate.
CreditCardValidator
  cardNumberSource : Object
Object that contains the value of the card number field.
CreditCardValidator
  cardTypeListener : IValidatorListener
The component that listens for the validation result for the card type subfield.
CreditCardValidator
  cardTypeProperty : String
Name of the card type property to validate.
CreditCardValidator
  cardTypeSource : Object
Object that contains the value of the card type field.
CreditCardValidator
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
  invalidCharError : String
Error message when the cardNumber field contains invalid characters.
CreditCardValidator
  invalidNumberError : String
Error message when the credit card number is invalid.
CreditCardValidator
  noNumError : String
Error message when the cardNumber field is empty.
CreditCardValidator
  noTypeError : String
Error message when the cardType field is blank.
CreditCardValidator
  wrongLengthError : String
Error message when the cardNumber field contains the wrong number of digits for the specified credit card type.
CreditCardValidator
  wrongTypeError : String
Error message the cardType field contains an invalid credit card type.
CreditCardValidator
Protected Properties
 PropertyDefined By
Public Methods
 MethodDefined By
  
Constructor.
CreditCardValidator
 Inherited
addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registers an event listener object with an EventDispatcher object so that the listener receives notification of an event.
EventDispatcher
 Inherited
Dispatches an event into the event flow.
EventDispatcher
 Inherited
Checks whether the EventDispatcher object has any listeners registered for a specific type of event.
EventDispatcher
 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
removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void
Removes a listener from the EventDispatcher object.
EventDispatcher
 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
  
[static] Convenience method for calling a validator.
CreditCardValidator
 Inherited
Returns the primitive value of the specified object.
Object
 Inherited
Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type.
EventDispatcher
Protected Methods
 MethodDefined By
  
[override] Override of the base class doValidation() method to validate a credit card number.
CreditCardValidator
Events
 Event Summary Defined By
 Inherited[broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active.EventDispatcher
 Inherited[broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive.EventDispatcher
Property Detail
Constructor Detail
Method Detail
CreditCardValidatorExample.mxml
<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the CreditCardValidator. -->
<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>
        import mx.controls.Alert;
    </fx:Script>

    <fx:Declarations>
        <!-- Define model for the credit card data. -->
        <fx:Model id="creditcard">
            <card>
                <cardType>{cardTypeCombo.selectedItem.data}</cardType>
                <cardNumber>{cardNumberInput.text}</cardNumber>
            </card>
        </fx:Model>

        <mx:CreditCardValidator id="ccV" 
                cardTypeSource="{creditcard}" cardTypeProperty="cardType"
                cardNumberSource="{creditcard}" cardNumberProperty="cardNumber"
                trigger="{myButton}" triggerEvent="click"
                cardTypeListener="{cardTypeCombo}"
                cardNumberListener="{cardNumberInput}"
                valid="Alert.show('Validation Succeeded!');"/>
    </fx:Declarations>

    <s:Panel title="CreditCardValidator Example"
            width="75%" height="75%"
            horizontalCenter="0" verticalCenter="0">
        <mx:Form id="creditCardForm" left="10" right="10" top="10" bottom="10">
            <mx:FormItem label="Card Type">
                <mx:ComboBox id="cardTypeCombo">
                    <mx:dataProvider>
                        <fx:Object label="American Express" data="American Express"/>
                        <fx:Object label="Diners Club" data="Diners Club"/>
                        <fx:Object label="Discover" data="Discover"/>
                        <fx:Object label="MasterCard" data="MasterCard"/>
                        <fx:Object label="Visa" data="Visa"/>
                    </mx:dataProvider>
                </mx:ComboBox>
            </mx:FormItem>
            <mx:FormItem label="Credit Card Number">
                <s:TextInput id="cardNumberInput"/>
            </mx:FormItem>
            <mx:FormItem>
                <s:Button id="myButton" label="Check Credit"/>
            </mx:FormItem>
        </mx:Form>
    </s:Panel>

</s:Application>