[eluser]LuckyFella73[/eluser]
The userguide says you only have to load the javascript library.
The jquery library is loaded automatically unless you define an
other library. Until now jquery is the only one available in the
CI reactor package.
(Becasue JQuery.php in location : YourCIProject/system/libraries/javascript , that worked !)
Note : the first you much load javascript library before load jquery library.
Example :