RegExpValidator matches text against a RegEx pattern : RegExpValidator « Data Model « Flex

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2. Data Model
3. RegExpValidator

RegExpValidator matches text against a RegEx pattern

  
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
    <mx:RegExpValidator source="{ssn}" 
                        property="text" 
                        flags="gmi"
                        expression="\d\{3\}.\d\{2\}.\d\{4\}"
                        noMatchError="Your SSN is unrecognized." 
                        trigger="{submitButton}"
                        triggerEvent="click" />
    <mx:Text text="Social Security Number:" />
    <mx:TextInput id="ssn" />
    <mx:Button label="Submit" id="submitButton" />
</mx:Application>

   
    
  

Related examples in the same category

1.	Using RegExpValidator to find all the matches on the pattern
2.	Use regular expression ABC\d to match a pattern consisting of the letters A, B, and C in sequence followed by any digit