• Update 3-4-2010: jQuery 1.4 changed things a bit
• Update 9-8-2012: Global events with Backbone JS

To bind something to a custom event:

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$().bind("sneeze",function(){
  console.log("bless you!");
});

and to fire that event, from anywhere else?

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$.event.trigger("sneeze");

result in the console, is as expected:

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bless you