I am doing a validation of CNPJ from the countries of Latin America.
I do not really understand Regex and would like help to validate the following rule:
3 digits, 6 numbers (YYMMDD), 3 digits (like P & G851223B24)
The field has to accept 3 digits + 6 numbers + 3 digits and I'm doing with jquery like this:
$('.cnpj-mask_3061').mask('AAA000000aaa', defOptions);
Note: In Mexico it did not work.
The mask that you used ( AAA000000aaa ) causes the first 3 and last characters to be only letters, not alphanumeric and symbols as well.
An approximation of the solution would be the expression:
/^.{3,4}\d{6}.{3}$/
Where ^.{3,4} defines that the value should start with 3 or 4 any characters, \d{6} sets that next will be 6 numbers and .{3}$ sets the value to end with any 3 characters.
Example working on JSBin .
Since I did not find anything other than the Wikipedia text on the correct formats, I can not guarantee that this validation is 100% I would suggest searching more about the formats and also studying about Regular Expressions , because not all the plugins and mask for jQuery are as flexible as is necessary in your case.