new EventEmitter()
This class allows to emit events like node.js. Basically it's equivalent to node.js EventEmitter.
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Methods
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emit(event)
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Emits the event. This will trigger all the listener with that event type. You can supply listener function's arguments by appending arguments after the 'event' parameter.
Parameters:
Name Type Description eventString The name of the event.
args...Arguments to supply to listeners.
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listeners(event) → {Array}
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Returns the array of listeners with specified event type.
Parameters:
Name Type Description eventString The name of the event.
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Returns:
An array holding event listeners.
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- Array
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on(event, listener)
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Registers a listener.
Parameters:
Name Type Description eventString The name of the event.
listenerfunction The function to be triggered.
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once(event, listener)
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Registers a one-time listener. The listener will be removed after being triggered once.
Parameters:
Name Type Description eventString The name of the event.
listenerfunction The function to be triggered.
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removeAllListeners(event)
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Removes all the listener with specified event type. If event parameter is not set, it will remove all the listener of all types.
Parameters:
Name Type Argument Description eventString <optional>
The name of the event.
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removeListener(event, listener)
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Removes the listener.
Parameters:
Name Type Description eventString The name of the event.
listenerfunction The function to be removed.
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