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Documentation Index

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Removes a subscription to an event type. The specified handler will no longer be called when the event occurs.

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Syntax

instance.off(eventName, handler);

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Parameters

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eventName
required
The name of the event to unsubscribe from.
​
handler
function
required
The specific callback function to remove. Must be the same function reference that was used with on() or once().

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Returns

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void
Returns a void operator.

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Examples

The following examples show different ways to unsubscribe from events: 
// Define a handler
function receiveHandler(event, instance) {
    console.log('Message received:', event);
}

// Subscribe to event
instance.on('receive', receiveHandler);

// Later, unsubscribe from event
instance.off('receive', receiveHandler);

// Unsubscribe after first use
instance.on('receive', (event, instance) => {
    console.log('Received:', event);
    instance.off('receive', receiveHandler);
});

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