TIP: Validating a field

[IT2Be]

When you validate a field you might do that via the onDataChange event like I did. But imagine this with my previous email validation example in mind:

- you input an email address or a string of addresses.
- there is a mistake in the field and you get an error message
- the method forces you back into the field
- you now <tab> into the field or place your cursor in another field

RESULT
- nothing changed so you DON'T trigger the onDataChange event!

SOLUTION
- trigger the method via onFocusLost. This will ALWAYS validate the field. The simple method won't slow down noticeable...