Learn how to use jQuery for client-side and WordPress for server-side form validation, including username, email checks, and custom validation methods.
To implement jQuery Form Validator with the specified validation rules, including required, minlength, email, equalTo, custom validation, confirm password, username pattern, email existence in the database in WordPress, and username with no numeric value, you’ll need to combine client-side validation using jQuery Form Validator with server-side validation using PHP and WordPress functions.