If it doesn't find any matches then it will fail the validation and the function will return false, if the match returns true then the email will be of a correct format and the function will return true.
indicates the minimum and maximum number of characters.
This post collects all my notes and references on j Query Form validation library.
This includes a large bunch of sample code and a complete reference guide to all the built-in validation rules in the library.
If you skip the message for a validation, the default message is displayed.
See a complete demo @Codepen The messages parameter is optional.