Beauty of Web Forms, Slim jQuery Form Validation Plugin: Ketchup

Ketchup is an easy-to-customize (in means of appearance & functionality) jQuery plugin for validating user inputs on the client-side.

The plugin works by inserting the validation rules inside the markup, just like:

<input type="password" class="validate" id="new_pass"/>

It comes with a bunch of ready-to-use rules, including: required, min/max length, number, URL, e-mail & much more where new ones can be created as well.

Using Ketchup, it is possible to combine validations (a field can be both required & e-mail).

Although the default setup of the plugin is very satisfactory, like mentioned, it is possible to create a new look & feel (which is easy with the documentation provided).

Requirements: jQuery

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