jQuery.validity is a jQuery plugin for powerful, accurate client-side form validation. It is well-organized, versatile and can easily tackle any validation problem.You can use to setup client-side form validation. Instead of writing validation manually or balancing some unwieldy server-side framework, validity allows you to design client-side validation in a manner that feels natural and straightforward.
jQuery.validity takes advantage of jQuery’s selector engine to perform validation on logical groupings of inputs, making it declarative and clean. This means that the inputs on a page can be added, removed, or changed and validation will still work without reconfiguration.
jQuery.validity is designed to give you total control over how validation messages appear, so you can easily adapt the way validation errors are displayed to the look and feel of your site.