Events in Ext
- Events in Ext follow the Observable design pattern.
- An observable object can notify any number of observers who would like to know when an event happens and what happened.
- Events describe when a certain action happens. This could be a user action, a response to an Ajax call, etc.
- Events also provide us with some information about what occurred via arguments.
- Event handling uses the same consistent pattern for native Ext events, DOM events and custom events.