How to rename a jQuery function

How do we rename a jquery function. let's say i want to rename the Jquery UI function draggble() to xdraggble() so that it does not conflict with another draggable function loaded from anot开发者_Python百科her library. Does renaming affect performance.

Something like this, executed before the other script loads:

jQuery.fn.xdraggable = jQuery.fn.draggable;

var xdraggable = $.fn.draggable;
//or
var xdraggable = $.draggable;

(depending implementation)

Same as what you'd do if you wanted to override the function but still have access.

See this post regarding what I mean by overriding