Starting in Drupal 7, additional JavaScript tools have been included to make development easier and allow you to make your sites more dynamic. This also makes Drupal itself more dynamic and allows Drupal core to implement modern new functionality expected in today's websites.
The following jQuery libraries are now included with Drupal by default:
jQuery 1.3.2—the latest version of jQuery is included with Drupal core and it is included on all pages by default so you don't need to do anything special to use jQuery in your theme.
jQuery UI 1.7.2—the latest version is included with Drupal in the
misc/ui
folder of the installation. Only UI core is included on all pages by default. If you want to utilize other scripts on your page, you will need to make appropriate calls todrupal_add_js
anddrupal_add_css
from your theme or module.jQuery Forms 2.21—jQuery Forms allow forms to utilize AJAX to submit the form. This functionality must be included with a call...