socket.io Removing specific listener

Question

I\'m using Socket.io v0.9.16 and Chrome 34

I\'m trying to remove a specific listener, or unsubscribe from a specific subscription

Something like this:

<

Answer 1

//To unsubscribe all listeners of an event
socket.off('event-name');

//to unsubscribe a certain listener
socket.off('event-name', listener);

Note that socket.off, socket.removeListener, socket.removeAllListeners, socket.removeEventListener are synonyms.

This is tested on socket.io v1.4.3

Answer 2

You need to pass in the listener function to removeListener.

function testFun(data){
    console.log('test complete',data);
}

socket.on('testComplete', testFun); 

function emitTest(){
    console.log('emitting test');
    socket.emit('test','first emit');
}

function removeListener(){
    socket.removeListener('testComplete', testFun);
}

Answer 3

If you're not using a function call, or even if you are the following worked for me:

getEventListeners(socket)['testComplete'][0].remove()

You could even loop through all the listeners attached and remove them.

for(var prop in getEventListeners(websocket))
{
    $(getEventListeners(websocket)[prop]).each(function() { this.remove()})
}

It's worth pointing out that although this works, it only works in Chrome at the moment.