Hello,
Easy user interaction and data collection is really a key functionality on most websites and web applications. Providing users high quality and intuitive input forms may be just what is needed to make your users take the time to fill in and submit the information you’re trying to collect. In this article I have collected a number of really essential jQuery Form Enhancements. A few cheat sheets have been added as well.
Read more at 50+ jQuery Plugins for Form Enhancements

Kind regards,
Mostafa Anoosheh