Differences between 2 pieces of code (jQuery.extend)

Differences between 2 pieces of code (jQuery.extend)


Hi there again,
following my last topic, I have another doubt that is more or less the
same...
Besides syntax, is there a difference between this:
(function($){
    $.extend({
        A: {
            abc: function() { alert("ABC"); }
        }
    });
})(jQuery);
And this:
(function($){
    $.A = {
        abc: function() { alert("ABC"); }
    }
})(jQuery);
?