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mx.validators 

DateValidator  - AS3 Flex

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Migrating to ActionScript 3
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List of deprecated elements
Accessibility Implementation Constants
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(Preview)
Packagemx.validators
Classpublic class DateValidator
InheritanceDateValidator Inheritance Validator Inheritance EventDispatcher Inheritance Object

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

The DateValidator class validates that a String, Date, or Object contains a proper date and matches a specified format. Users can enter a single digit or two digits for month, day, and year. By default, the validator ensures the following formats:
  • The month is between 1 and 12 (or 0-11 for Date objects)
  • The day is between 1 and 31
  • The year is a number

You can specify the date in the DateValidator class in two ways:

  • Single String containing the date - Use the source and property properties to specify the String. The String can contain digits and the formatting characters specified by the allowedFormatChars property, which include the "/\-. " characters. By default, the input format of the date in a String field is "MM/DD/YYYY" where "MM" is the month, "DD" is the day, and "YYYY" is the year. You can use the inputFormat property to specify a different format.
  • Date object.
  • Object or multiple fields containing the day, month, and year. Use all of the following properties to specify the day, month, and year inputs: daySource, dayProperty, monthSource, monthProperty, yearSource, and yearProperty.

MXML SyntaxexpandedHide MXML Syntax

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

  <mx:DateValidator 
    allowedFormatChars="/\-. " 
    dayListener="Object specified by daySource"
    dayProperty="No default"
    daySource="No default"
    formatError= "Configuration error: Incorrect formatting string." 
    inputFormat="MM/DD/YYYY" 
    invalidCharError="The date contains invalid characters."
    monthListener="Object specified by monthSource"
    monthProperty="No default"
    monthSource="No default"
    validateAsString="true|false"
    wrongDayError="Enter a valid day for the month."
    wrongLengthError="Type the date in the format inputFormat." 
    wrongMonthError="Enter a month between 1 and 12."
    wrongYearError="Enter a year between 0 and 9999."
    yearListener="Object specified by yearSource"
    yearProperty="No default"
    yearSource="No default"
  />
  

View the examples

More examples



Public Properties
 PropertyDefined By
  allowedFormatChars : String
The set of formatting characters allowed for separating the month, day, and year values.
DateValidator
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
  dayListener : IValidatorListener
The component that listens for the validation result for the day subfield.
DateValidator
  dayProperty : String
Name of the day property to validate.
DateValidator
  daySource : Object
Object that contains the value of the day field.
DateValidator
  formatError : String
Error message when the inputFormat property is not in the correct format.
DateValidator
  inputFormat : String
The date format to validate the value against.
DateValidator
  invalidCharError : String
Error message when there are invalid characters in the date.
DateValidator
  monthListener : IValidatorListener
The component that listens for the validation result for the month subfield.
DateValidator
  monthProperty : String
Name of the month property to validate.
DateValidator
  monthSource : Object
Object that contains the value of the month field.
DateValidator
  validateAsString : Object
Determines how to validate the value.
DateValidator
  wrongDayError : String
Error message when the day is invalid.
DateValidator
  wrongLengthError : String
Error message when the length of the date doesn't match that of the inputFormat property.
DateValidator
  wrongMonthError : String
Error message when the month is invalid.
DateValidator
  wrongYearError : String
Error message when the year is invalid.
DateValidator
  yearListener : IValidatorListener
The component that listens for the validation result for the year subfield.
DateValidator
  yearProperty : String
Name of the year property to validate.
DateValidator
  yearSource : Object
Object that contains the value of the year field.
DateValidator
Protected Properties
 PropertyDefined By
Public Methods
 MethodDefined By
  
Constructor.
DateValidator
 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
  
validateDate(validator:DateValidator, value:Object, baseField:String):Array
[static] Convenience method for calling a validator from within a custom validation function.
DateValidator
 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 date.
DateValidator
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
DateValidatorExample.mxml
<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the DateValidator. -->
<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>
        <fx:Model id="CheckModel">
            <dateInfo>
                <DOB>{dob.text}</DOB>
            </dateInfo>
        </fx:Model>

        <mx:DateValidator source="{dob}" property="text" allowedFormatChars="/" 
                trigger="{myButton}" triggerEvent="click" 
                valid="Alert.show('Validation Succeeded!');"/>
    </fx:Declarations>

    <s:Panel title="DateValidator Example"
            width="75%" height="75%" 
            horizontalCenter="0" verticalCenter="0">
        <mx:Form left="10" right="10" top="10" bottom="10">
            <mx:FormItem label="Enter date of birth (mm/dd/yyyy): ">
                <s:TextInput id="dob" width="100%"/>
            </mx:FormItem>
            <mx:FormItem >
                <s:Button id="myButton" label="Validate" />
            </mx:FormItem>
        </mx:Form>
    </s:Panel>

</s:Application>