Members

protected allowedEvents_

An object containing event names as keys and booleans as values.

NOTE: If an event name is set to a true value here EventTarget#trigger will have extra functionality. See that function for more information.

Properties:

Name	Type	Description
EventTarget.prototype.allowedEvents_

Methods

addEventListener()

An alias of EventTarget#on. Allows EventTarget to mimic the standard DOM API.

See:

• EventTarget#on

any(type, fn)

This function will add an event listener that gets triggered only once and is removed from all events. This is like adding an array of event listeners with EventTarget#on that calls EventTarget#off on all events the first time it is triggered.

Name	Type	Description
type	string | Array.<string>	An event name or an array of event names.
fn	function	The function to be called once for each event name.

dispatchEvent()

An alias of EventTarget#trigger. Allows EventTarget to mimic the standard DOM API.

See:

• EventTarget#trigger

off(type, fn)

Removes an event listener for a specific event from an instance of EventTarget. This makes it so that the event listener will no longer get called when the named event happens.

Name	Type	Description
type	string | Array.<string>	An event name or an array of event names.
fn	function	The function to remove.

on(type, fn)

Adds an event listener to an instance of an EventTarget. An event listener is a function that will get called when an event with a certain name gets triggered.

Name	Type	Description
type	string | Array.<string>	An event name or an array of event names.
fn	function	The function to call with EventTargets

one(type, fn)

This function will add an event listener that gets triggered only once. After the first trigger it will get removed. This is like adding an event listener with EventTarget#on that calls EventTarget#off on itself.

Name	Type	Description
type	string | Array.<string>	An event name or an array of event names.
fn	function	The function to be called once for each event name.

removeEventListener()

An alias of EventTarget#off. Allows EventTarget to mimic the standard DOM API.

See:

• EventTarget#off

trigger(event)

This function causes an event to happen. This will then cause any event listeners that are waiting for that event, to get called. If there are no event listeners for an event then nothing will happen.

If the name of the Event that is being triggered is in EventTarget.allowedEvents_. Trigger will also call the on + uppercaseEventName function.

Example: 'click' is in EventTarget.allowedEvents_, so, trigger will attempt to call onClick if it exists.

Name	Type	Description
event	string | EventTarget~Event | Object	The name of the event, an Event, or an object with a key of type set to an event name.