Filled (Validator)

There are conceivable constellations for which it could be an added value to use a filled validator instead of the mandatory field property. For example, you can add a field-specific info text while the empty mandatory field always shows the standard according to the locale.
However, this case can also be covered by RegExp when needed.

Checks if the element is filled.

►NOTE◄ A checkbox is considered filled as soon as it is checked.