jQuery Tiny Pub/Sub: A really, really, REALLY tiny pub/sub implementation for jQuery.

jquery.ba-tinypubsub.js

/* jQuery Tiny Pub/Sub - v0.7 - 10/27/2011
 * http://benalman.com/
 * Copyright (c) 2011 "Cowboy" Ben Alman; Licensed MIT, GPL */

(function($) {

  var o = $({});

  $.subscribe = function() {
    o.on.apply(o, arguments);
  };

  $.unsubscribe = function() {
    o.off.apply(o, arguments);
  };

  $.publish = function() {
    o.trigger.apply(o, arguments);
  };
  
  $.multiarmed = function (a){
    var events   = a.events,
    callback = a.callback,
    stored   = {},
    fired    = 0,
    slice    = Array.prototype.slice;
    
    return function (e){
        var idxE = $.inArray(e.type, events),
        type = e.type;
        if ( -1 === idxE ) return true;
        stored[type] = slice.call(arguments, 1);
        delete events[idxE];
        fired += 1;
        if (fired === events.length){
          callback.call(a.context || {}, stored);
        }
        
      };
    };
}(jQuery));

var multiarmedHandler = $.multiarmed({
    events   : ['event:one', 'event:two'],
    callback : function (){
        console.info('all events are fired', arguments)
        console.info('this.is context',this)
    },
    context  : {optionsl:'onject'} 
});

$.subscribe('event:one', multiarmedHandler );
$.subscribe('event:two', multiarmedHandler );

$.publish('event:one', 1,2,3);
$.publish('event:two', 4,5,6);