Flex has a set of Validator classes which can be used to validation data entries. The Validator class is the base for all other validator classes.

• Credit card validation
• Date validation
• Email address validation
• Number validation
• Phone number validation
• Social security validation
• String validation
• Zip code validation
• Regular expression validation

To use validation, instantiate a validation sub class for each target field. For instance, consider this Text Input control,