Validate a date entered into a form

           

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    <!-- validators\DateExample.mxml -->
<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">
    <s:layout>
        <s:VerticalLayout />
    </s:layout>
    <fx:Declarations>
        <mx:DateValidator id="dateV" daySource="{dayInput}"
            dayProperty="text" monthSource="{monthInput}" monthProperty="text"
            yearSource="{yearInput}" yearProperty="text" />
        <!-- Alternate method for a single field containing the date. -->
        <fx:Model id="alternateDate">
            <dateInfo>
                <date>{dateInput.text}</date>
            </dateInfo>
        </fx:Model>
        <mx:DateValidator id="stringDateV" source="{dateInput}"
            property="text" inputFormat="dd/mm/yyyy" allowedFormatChars="*#~/" />
    </fx:Declarations>
    <mx:Form>
        <mx:FormItem label="Month">
            <s:TextInput id="monthInput" />
        </mx:FormItem>
        <mx:FormItem label="Day">
            <s:TextInput id="dayInput" />
        </mx:FormItem>
        <mx:FormItem label="Year">
            <s:TextInput id="yearInput" />
        </mx:FormItem>
        <mx:FormItem>
            <s:Button label="Check Date" click="dateV.validate();" />
        </mx:FormItem>
    </mx:Form>
    <mx:Form>
        <mx:FormItem label="Date of Birth (dd/mm/yyyy)">
            <s:TextInput id="dateInput" />
        </mx:FormItem>
        <mx:FormItem>
            <s:Button label="Check Date" click="stringDateV.validate();" />
        </mx:FormItem>
    </mx:Form>
</s:Application>

1.	Using Flex validators with form models
2.	Set up validator for Form input fields
3.	Use Validator to validate data from a form
4.	Validator, Model and Form controls
5.	Using Validators.validateAll() method to validate a form
6.	Validating form control contents data on user entry
7.	Validate form data with ActionScript
8.	Validating user input for form data
9.	Change form input box label when data is not valid
10.	Use ActionScript to validate form data
11.	Validate an e-mail address to ensure that it is formatted correctly

Validate a date entered into a form : Form Validator « Components « Flex

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