Question

89

socket.io Removing specific listener

rated 0 times [ 96] [ 7] / answers: 1 / hits: 79642 / 10 Years ago, tue, april 15, 2014, 12:00:00

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:

socket.on('testComplete',function(data){

    console.log('test complete',data);

}); 



function emitTest(){

    console.log('emitting test');

    socket.emit('test','first emit');

}



function removeListener(){

    socket.removeListener('testComplete');

}

If I call the emitTest function, and then the removeListener function, I still see the 'test complete' message when I call emitTest again. The listener should have been removed, if the socket function even works.

I'm looking for a way to remove a specific listener that actually works.

This answer says that removeListener doesn't work.

Is there any downside to just doing this:

socket.removeListener=function(name){

        if(socket.$events.hasOwnProperty(name)){

            delete socket.$events[name];

        }

    };

I marked an answer as correct, but I'm using the above in my code since it works better with my design.

Answers

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darrell

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4 Years ago

answered 10 Years ago jazminkyrap · Accepted Answer

//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