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jQuery Tiny Pub/Sub: A really, really, REALLY tiny pub/sub implementation for jQuery.
/* 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);
};
}(jQuery));
/* jQuery Tiny Pub/Sub - v0.7 - 10/27/2011
* http://benalman.com/
* Copyright (c) 2011 "Cowboy" Ben Alman; Licensed MIT, GPL */
(function(a){var b=a({});a.subscribe=function(){b.on.apply(b,arguments)},a.unsubscribe=function(){b.off.apply(b,arguments)},a.publish=function(){b.trigger.apply(b,arguments)}})(jQuery)
@zaus
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zaus commented Feb 11, 2013

If we're talking about relative sizes, why use "publish/subscribe" nomenclature? Just stick with "on/off/trigger" (or my preferred "on/off/do").

UPDATE I just found out why the "pros" stick to trigger instead of do (boo <IE9).

Example: https://gist.github.com/zaus/4756518

/* jQuery Tinier Pub/Sub - v0.9b - "on/off/do version" - 2013-02-11
 * original by http://benalman.com/ 10/27/2011
 * Original Copyright (c) 2011 "Cowboy" Ben Alman; Licensed MIT, GPL */

(function($) {

  // "topic" holder
  var o = $({});

  // attach each alias method
  $.each({on:0,off:0,"go":'trigger'}, function(alias,method) {
    $[alias] = function(topic, callbackOrArgs) {
        o[method || alias].apply(o, arguments);
    }
  });

}(jQuery));

@connected
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connected commented Feb 14, 2013

Is there a way i can e.preventDefault() on passed event? I ve tried it, but it doesn't work...

@zaus
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zaus commented Feb 19, 2013

@connected - what's the default event you're trying to prevent? isn't this limited to the arbitrary hidden topic var o? just curious.

@aghouseh
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aghouseh commented Apr 12, 2013

@kodi thanks for the requirejs module implementation!

@mediafreakch
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mediafreakch commented Jul 10, 2014

How would you add support for wildcards in the topic name? Does it even make sense as jQuery doesn't support wildcards for event names? Or is using a standalone pub/sub library the better approach?

@gmanish
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gmanish commented Dec 4, 2015

I know some javascript and little of jQuery (been playing with Ember, just for fun). I understand the on off methods, but I do not understand what var o = $({}); does. Can anyone please explain?

As always, google doesn't consider these braces and the $ in its search results.

@shshaw
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shshaw commented Apr 14, 2016

@gmanish var o = $({}) simply creates a jQuery collection with an empty object {} that becomes the recipient of all the event triggers. As other comments show, the recipient could be anything like $('<b />').

@Kiodaddy
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Kiodaddy commented Jun 20, 2017

I am telling you this is working really good.

@ahmed-musallam
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ahmed-musallam commented Aug 31, 2017

@lanikane
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lanikane commented Aug 16, 2022

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