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Example 7

Here you can learn more about the masks.
'alphabetic' is a mask embedded into Yav.
'mydate' is a mask added with the function yav.addMask.
If Yav doesn't find the named mask it uses the characters in the name as the ones accepted (e.g. '.01').

source

Working with the masks
Alphabetic:
Date:
Custom:

Example 7

Working with the masks