Field validation / character limitations. #56
Description
Has this feature been requested already?
- I have searched the existing issues and this is a new request.
What is your desired feature/change?
A new JSON key for options that would add a custom Regex validation step. Could also add a character limit maybe?
Would provide a way to check the inputted string against a Regex, such as /[a-zA-Z0-9]/, to make sure that only certain characters (alphanumeric in this case) would be accepted. Should also have some method to check for matches such as /[0-9]+px/ and fail if it doesn't match. These two are essentially opposite examples so you would need to figure out a way to easily swap between "fail on match" and "fail on no matches" functionality.
Why should this be added?
Would be nice for certain fields such as usernames or edge case custom values where maybe you require a "px" or "%" value.
Additional notes
Key could be "validation", "validate", or otherwise, and could accept a Regex as a string.