three.js/docs/pages/EventDispatcher.html.md

EventDispatcher

This modules allows to dispatch event objects on custom JavaScript objects.

Main repository: eventdispatcher.js

Code Example:

Code Example

class Car extends EventDispatcher {
	start() {
		this.dispatchEvent( { type: 'start', message: 'vroom vroom!' } );
	}
};
// Using events with the custom object
const car = new Car();
car.addEventListener( 'start', function ( event ) {
	alert( event.message );
} );
car.start();

Constructor

new EventDispatcher()

Methods

.addEventListener( type : string, listener : function )

Adds the given event listener to the given event type.

type

The type of event to listen to.

listener

The function that gets called when the event is fired.

.dispatchEvent( event : Object )

Dispatches an event object.

event

The event that gets fired.

.hasEventListener( type : string, listener : function ) : boolean

Returns true if the given event listener has been added to the given event type.

type

The type of event.

listener

The listener to check.

Returns: Whether the given event listener has been added to the given event type.

.removeEventListener( type : string, listener : function )

Removes the given event listener from the given event type.

type

The type of event.

listener

The listener to remove.

Source

src/core/EventDispatcher.js