Add custom date placeholders

[simonschaufi]

This is a patch by germanwings i found while booking a flight ;)
It adds new placeholders for (birth)dates that can be overwritten to localize them by setting:

$.mask.placeholders['D'] = 'T';

So instead of having underlines, you can now have DD.MM.YYYY as placeholder. Very nice!

This can also be extended more to use Hour and Second for example.

[simonschaufi]

oh, while browsing through other pull requests, i found #182 which is almost the same.

[digitalBush]

Thank you for the suggestion! This is why I exposed the hook to allow custom placeholders. Until we have a date specific mask option, I'd like to hold off on adding these as defaults.

[simonschaufi]

@digitalBush can you please explain how to use "the hook"?

[FagnerMartinsBrack]

@simonschaufi

Probably like this:

$.extend( $.mask, {
    definitions: {
        // configs here
    },
    placeholders: {
        // Configs here
    }
});

[digitalBush]

@simonschaufi I misspoke just a bit. I meant custom mask definitions. I'd like to hold off on the placeholder thing I think until I have a way to do proper date masking.

The eyescript sample from the README is good example of adding definitions.

 $.mask.definitions['~']='[+-]';
 $("#eyescript").mask("~9.99 ~9.99 999");