understanding $ vs. jQuery in iife instead of $

Question

I am trying to understand if there is any difference between:

(function($){

...

})(jQuery);

vs.

(function($){

...

})($);

Note the jQuery was replaced with a $. Is this ok? Is it not used anywhere because it can't work? It works but maybe it is non-standard? Can someone please explain this if it is an error or if it is ok? Thanks

Answer 1

Other JavaScript frameworks may also use $ as a shortcut. To guarantee that $ is jQuery inside your function, pass jQuery and not $ at the end. This type of defining a function or "code area" is to take sure that $ really is jQuery when mixing frameworks.