Class: EventTarget

Methods

addEventListener (type, handler, opt_capture, opt_scope)

This method adds a listener for a specific event.

Note that to prevent potential memory leaks, you must either call removeEventListener or dispose on the given object when you no longer need it.

Name	Type	Description
type	string	The name of the event
handler	function	An event handler function
opt_capture	boolean	optional true indicates that the method should listen in the capture phase (bubble otherwise)
opt_scope	Object	optional An object defining the scope for the handler function

addOnDisposeCallback (callback, opt_scope)

This method adds a callback which is triggered when the EventTarget object is being disposed.

Name	Type	Description
callback	function	The callback function.
opt_scope	Object	optional An optional scope for the callback function

dispatchEvent (evt)

This method dispatches an event on the EventTarget object.

Name	Type	Description
evt	H.util.Event | string	An object representing the event or a string with the event name

dispose ()

This method removes listeners from the given object. Classes that extend EventTarget may need to override this method in order to remove references to DOM Elements and additional listeners.

removeEventListener (type, handler, opt_capture, opt_scope)

This method removes a previously added listener from the EventTarget instance.

Name	Type	Description
type	string	The name of the event
handler	function	A previously added event handler
opt_capture	boolean	optional true indicates that the method should listen in the capture phase (bubble otherwise)
opt_scope	Object	optional An object defining the scope for the handler function