- Standard Events: In Web applications, events generally refer to operations performed by users on page elements or responses obtained from the server using the mouse or keyboard.
- Business Events: events related to specific businesses. For example, an expand event and a collapse event are triggered when the Panel component is expanded or shrunk, they are all related to specific businesses that expand or contract.
- Event processing function: Responding to user operationsProgramOr a function, also known as an event listener.
- Event binding: The process of associating time with event processing functions.
- Event object: it represents the state of the event, such as the element that triggers the event object, the location and status of the mouse, and the key to press.
Extjs events are a perfect event system built on the basis of browser standard events. They not only support all browser standard events, but also support custom business events, is the basis for building extjs components.
The differences between extjs events and browser standard events are mainly manifested in the following aspects:
- The method for binding event processing functions is different.
- The support for custom business events varies.
- Different browsers are supported.
