Class: EventEmitter

EventEmitter

new EventEmitter()

Creates an instance of EventEmitter class.
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Methods

emit(event, args)

Emits an event. The function calls all registered listeners in the order they have been added. The provided args param will be passed to each listener of the event.
Parameters:
Name Type Description
event string The name of the event.
args object Object, which will be passed to the listener as only argument.
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off(event, callback)

Removes an event from the list of event listeners to some event.
Parameters:
Name Type Description
event string The name of the event.
callback function Callback method to be removed from the list of listeners.
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on(event, callback)

Adds event listener to an event.
Parameters:
Name Type Description
event string The name of the event.
callback function Callback method to be invoked when event is being emitted.
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