How to unsubscribe from a socket.io subscription?

Question

Suppose there are objects making subscriptions to a socket server like so:

socket.on(\'news\', obj.socketEvent)

These objects have a short life

Answer 1

Socket.io version 0.9.16 implements removeListener but not off.

You can use removeListener instead of off when unsubscribing, or simply implement off as follows:

  var socket = io.connect(url);
  socket.off = socket.removeListener;

If you are using the Backbone listenTo event subscription approach, you'll need to implement the above as Backbone calls off when unsubscribing events.