Validation rules sintax

Hi,
where can I find a complete documentation about Validation rules for custom fields?
I need to two kind of validation:
- with the birthday I would like to verify how old the members are and if they choose the right plan for their age
- A field must be required if they selected another kind of field.

Thank you and excese me for my poor english!

Hi

We use this library for validate form data. You can look at the documentation at posabsolute.github.io/jQuery-Validation-Engine/#validators/ to see all the validation rules you can use

Regards,

Tuan

As a follow-up question, I see from the documentation that I can add custom rules to the locale file. Does events booking use any locale file in particular? (found in /public_html/media/com_eventbooking/assets/js/validate/js/languages).