Joomla! is ready for your modern JavaScript needs. By using the MooTools JavaScript framework, you can find elements and assign event handlers to them. You can also use pre-built functions within Joomla! to generate the JavaScript necessary for many typical effects. Regardless of the number of effects used, Joomla! will make sure that the MooTools framework is only loaded once, as long as you use the JHTML member functions. You can also use jQuery with MooTools in Joomla!, provided that you take precautions to make sure that the frameworks do not conflict.