Ajax Email validator :) AJAX PHP 

I think the most important aspects of building and processing a form is how you validate data here is a script build via AJAX and PHP with example how to check if your email address is real one :

Unobtrusive Spinbox Script 

SpinBox.JS is an unobtrusive and almost codeless way to turn the ordinary input text boxes into cool looking, multifunctional and skinnable spin boxes. All you have to do is to create a normal text input on the page, give it an ID, edit a few arguments, set a skin in the initialization script and hit [...]

Long input helper for jQuery 

This checks while you type if the number of characters entered are less than the actual “viewable” characters in an input field. If the characters typed are more, then the text will appear somewhere on the screen so you can see what you have typed so far.

SearchBox.XML – Integrated Search Box for your Website 

SearchBox.XML is a compact AJAX script that allows users to integrate any number of search engines to their websites. The script comes with a set of 10 prefedined skins – Acid, Blue, Classic, Default, Green, Mac, MSDN, Vista, WeMakeSites and WindowsXP, but creating a custom skin is a piece of cake. The flexible rendering of [...]

jQuery AJAX Contact Form 

First, download the jQuery library and form plugin and then let’s start creating our HTML form. Keep them all in the same folder for now. We’ll want to first call both javascript files, let’s do that with: 1. 2. 3. 4. 5. That’s a great start, but we need to make the form before we [...]

Auto-populate multiple select 

Allows the user to select a top level category from one select box and to automatically populate the sub-category. This plugin uses three select boxes, the first (element category) drives the next (elements) which drives the next (attributes).

Maxlength plugin 

The plugin simply reports back the number of characters left the user has, with a few extra bells and whistles.

Lightweight WYSIWYG jQuery plugin 

A simple and lightweight richt text editor easy to attach to any textarea. There is also a Drupal 6.x module available for Drupal integration.

YUI : DHTML Form Controls 

DHTML Form Controls built with the Yahoo User Interface Libary.