Application programming interface. The published methods for using a set of programs. In Joomla, the API refers to the public methods and fields of all the defined classes, especially ones in the Joomla platform. Because third-party programs rely on the API, it should be changed as infrequently as possible and always with advanced notice.

#	Дата	Сумма	Источник
1	07.07.2015	+40$
2	07.07.2015	-60$	Квартплата
3	08.07.2015	+120$

Пример использования события onClick.

Пример использования события onMouseDown и onMouseUp.