From perusing the web, it looks like there are several approaches to doing this. Below is an example I wrote up quickly, to test out the concept.

jQuery.fn.extend({
// Override the core hide() method
  hide : function() { alert('hide method overriden'); }
});

And now to test it out:

$('#test').click(function() {
     $(p).hide();
});

When clicking on a link with an id=test, it will use my overridden method. I know this isn’t a practical example, but does show how overriding jQuery core methods is possible!

Here’s another example (view the source): http://expressionindesign.com/files/jqueryOverride/jquery_override.html

Other References

• A more complete example
• jQuery Documentation Example