events

Methods

clear(type)

Remove all callback functions that listen for the specified event type.

Parameters:

Name	Type	Description
type	String	The type of event.

emit(type, args, sync)

Invokes the callback functions for the specified event type.

Parameters:

Name	Type	Description
type	String	The type of event.
args	Object	The arguments to match before invoking the callback function.
sync	Boolean	Whether you want the callback to be executed right away. A value true indicates to execute the callback immediately upon the event being triggered, otherwise, there's small delay (approximately one millisecond) before the callback is invoked.

Returns:

A value of true to indicate that the callback should be called, otherwise false.

isOn(type)

Get an array of event listeners based on the specified event type.

Parameters:

Name	Type	Description
type	String	The type of event.

on(type, The, paramMatch)

Register a callback function as an event listener for the specified event type. You specify when the callback function is invoked based on a set of matching parameters.

Parameters:

Name	Type	Description
type	String	The type of event listener.
The	function	name of the function to call.
paramMatch	String	The list of function parameters.

once(type, listener, paramMatch)

Register a callback function as an event listener for the specified event type. After the callback function is invoked once, it's removed from the list of event listeners. You specify when the event listener is called based on the matching paramMatch parameter.

Parameters:

Name	Type	Description
type	String	The type of the event listener.
listener	function	The name of the function to call.
paramMatch	Object	A list of parameters that are required to invoke the event.

un(type, callback)

Deregister a callback function from being called based on the specified event type.

Parameters:

Name	Type	Description
type	String	The type of event.
callback	function	The name of the function to call from the event type.