new EventEmitter()
Minimal EventEmitter interface that is molded against the Node.js
EventEmitter interface.
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Methods
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addListener()
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emit(event, a1, a2, a3, a4, a5)
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Emit an event to all registered event listeners.
Parameters:
Name Type Description eventstring The name of the event.
a1* First param
a2* Second param
a3* Third param
a4* Forth param
a5* Fifth param
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Returns:
Indication if we've emitted an event.
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- boolean
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listeners(event, exists)
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Return a list of assigned event listeners.
Parameters:
Name Type Description eventstring The events that should be listed.
existsboolean We only need to know if there are listeners.
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Returns:
Listener list
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- array | boolean
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off()
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on(event, fn, context)
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Register a new EventListener for the given event.
Parameters:
Name Type Description eventstring Name of the event.
fnfuncton Callback function.
contextMixed The context of the function.
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Returns:
Self for chaining
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- EventEmitter
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once(event, fn, context)
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Add an EventListener that's only called once.
Parameters:
Name Type Description eventstring Name of the event.
fnfunction Callback function.
contextMixed The context of the function.
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Returns:
Self for chaining
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- EventEmitter
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removeAllListeners(event)
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Remove all listeners or only the listeners for the specified event.
Parameters:
Name Type Description eventstring The event want to remove all listeners for.
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Returns:
Self for chaining
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- EventEmitter
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removeListener(event, fn, context, once)
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Remove event listeners.
Parameters:
Name Type Description eventstring The event we want to remove.
fnfunction The listener that we need to find.
contextMixed Only remove listeners matching this context.
onceboolean Only remove once listeners.
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Returns:
Self for chaining
- Type
- EventEmitter