I found this :
Locate the line that the code being used to import jQuery and make sure it shows the following:
JHtml::_('jquery.framework');
where can I find this line ?
Which imports it in noConflict mode, but is also for Joomla 3.x only
Else you can replace it with the following, which will detect if a jQuery library is already being loaded and if not, it will import it.
if(!JFactory::getApplication()->get('jquery'))
{
JFactory::getApplication()->set('jquery',true);
$doc = JFactory::getDocument();
$doc->addScript('http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js');
}
This; do you think it will solved the issue ?
Regards