Phaser API Documentation

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Phaser . Events . EventEmitter

This is a beta release of our new docs system. Found an issue?
Please tell us about it in the #📖-newdocs-feedback channel on the Phaser Discord

Phaser . Events . EventEmitter

EventEmitter is a Scene Systems plugin compatible version of eventemitter3.

Constructor:

new EventEmitter()
Since: 3.0.0

Methods

addListener(event, fn, [context])
Focus
Focus

Description:

Add a listener for a given event.

Parameters:

name type arguments Default description
event string | symbol

The event name.

fn function

The listener function.

context * <optional> this

The context to invoke the listener with.

Returns:
Description:

this.

Examples:
Since: 3.0.0
Focus
Focus
destroy()
Focus
Focus

Description:

Removes all listeners.

Examples:
Since: 3.0.0
Focus
Focus
emit(event, [args])
Focus
Focus

Description:

Calls each of the listeners registered for a given event.

Parameters:

name type arguments description
event string | symbol

The event name.

args * <optional>

Additional arguments that will be passed to the event handler.

Returns:
Description:

true if the event had listeners, else false.

Type:
  • boolean
Examples:
Since: 3.0.0
Focus
Focus
eventNames()
Focus
Focus

Description:

Return an array listing the events for which the emitter has registered listeners.

Type:
  • Array.<(string
  • symbol)>
Examples:
Since: 3.0.0
Focus
Focus
listenerCount(event)
Focus
Focus

Description:

Return the number of listeners listening to a given event.

Parameters:

name type description
event string | symbol

The event name.

Returns:
Description:

The number of listeners.

Type:
  • number
Examples:
Since: 3.0.0
Focus
Focus
listeners(event)
Focus
Focus

Description:

Return the listeners registered for a given event.

Parameters:

name type description
event string | symbol

The event name.

Returns:
Description:

The registered listeners.

Type:
  • Array.
Examples:
Since: 3.0.0
Focus
Focus
off(event, [fn], [context], [once])
Focus
Focus

Description:

Remove the listeners of a given event.

Parameters:

name type arguments description
event string | symbol

The event name.

fn function <optional>

Only remove the listeners that match this function.

context * <optional>

Only remove the listeners that have this context.

once boolean <optional>

Only remove one-time listeners.

Returns:
Description:

this.

Examples:
Since: 3.0.0
Focus
Focus
on(event, fn, [context])
Focus
Focus

Description:

Add a listener for a given event.

Parameters:

name type arguments Default description
event string | symbol

The event name.

fn function

The listener function.

context * <optional> this

The context to invoke the listener with.

Returns:
Description:

this.

Examples:
Since: 3.0.0
Focus
Focus
once(event, fn, [context])
Focus
Focus

Description:

Add a one-time listener for a given event.

Parameters:

name type arguments Default description
event string | symbol

The event name.

fn function

The listener function.

context * <optional> this

The context to invoke the listener with.

Returns:
Description:

this.

Examples:
Since: 3.0.0
Focus
Focus
removeAllListeners([event])
Focus
Focus

Description:

Remove all listeners, or those of the specified event.

Parameters:

name type arguments description
event string | symbol <optional>

The event name.

Returns:
Description:

this.

Examples:
Since: 3.0.0
Focus
Focus
removeListener(event, [fn], [context], [once])
Focus
Focus

Description:

Remove the listeners of a given event.

Parameters:

name type arguments description
event string | symbol

The event name.

fn function <optional>

Only remove the listeners that match this function.

context * <optional>

Only remove the listeners that have this context.

once boolean <optional>

Only remove one-time listeners.

Returns:
Description:

this.

Examples:
Since: 3.0.0
Focus
Focus
shutdown()
Focus
Focus

Description:

Removes all listeners.

Examples:
Since: 3.0.0
Focus
Focus