Valideasy is a jQuery plugin that you can use in form validation without writing complex JS script. Everything's done via HTML attributes added to your form fields.
When your user types in "firstname.lastname@example.org", Mailcheck will suggest "email@example.com".
addClassWhenEmail is a jQuery plugin to hide the submit button by default and only show it if user enters the correct email address.
International Telephone Input is a jQuery plugin for entering and validating international telephone numbers. It adds a flag dropdown to any input, which lists all the countries and their international dial codes next to their flags.
Validetta is a tiny jQuery plugin which you can do client-side validation of your forms. It aims to decrease your burden with easy usage and flexible structure.
Formance.js is a jQuery library for formatting and validating form fields. It supports the following form fields
jQuery Spinner is lightweight implementation of a spinner for selecting numbers by clicking +/– or by typing.
Supports validation, arrow keys, min and max constraints and is unobtrusive.
Verify.js is a powerful, customizable asynchronous form validation library.
Alpaca is the Easy Forms Engine for jQuery / Bootstrap. It is built around JSON schema to keep things simple. Using Alpaca, you can express your forms object model, types, properties and validation logic.
Alpaca comes pre-configured to work nicely with the following web frameworks:
jQuery validation engine is a jQuery plugin aimed at the validation of form fields in the browser (IE 6-8, Chrome, Firefox, Safari, Opera 10). The plugin provides visually appealing prompts that grab user attention on the subject matter.
html5form jQuery plugin gets the same result in all versions on Internet Explorer and Firefox 3.6.
Pliant is a jQuery validation plugin that allows easy extending/overriding of rules, as well as defining field validation by html comments.
nextVal is an easy-to-use, flexible and robust form validation plugin for jQuery.
Each input should have a
validate attribute. Elements can also have placeholder and title attributes. Also
validate attribute can be passed multiple values.