jQuery: Tiny Pub/Sub implementation for jQuery.

jquery.ba-tinypubsub.js

/*!
 * jQuery Tiny Pub/Sub - v0.4 - 1/4/2011
 * http://benalman.com/
 *
 * Copyright (c) 2010 "Cowboy" Ben Alman
 * Dual licensed under the MIT and GPL licenses.
 * http://benalman.com/about/license/
 */

(function($){

  var o = $({});

  $.subscribe = function( type, data, fn ) {
    if ( $.isFunction( data ) || data === false ) {
      fn = data;
      data = undefined;
    }

    function proxy() {
      return fn.apply( this, Array.prototype.slice.call( arguments, 1 ) );
    };

    proxy.guid = fn.guid = fn.guid || proxy.guid || $.guid++;

    o.bind( type, data, proxy );
  };

  $.unsubscribe = function() {
    o.unbind.apply( o, arguments ); // Seems to be broken in jQuery 1.4.4 (?)
  };

  $.publish = function() {
    o.trigger.apply( o, arguments );
  };

})(jQuery);