See the example here >>> https://stackoverflow.com/questions/14567990/how-to-add-a-callback-function-to-the-addclass-method-of-jquery

Extend jQuery addClass and removeClass function to accept callback function.js

// Extend jQuery addClass function to accept callback function
            var oAddClass = $.fn.addClass;
            var oRemoveClass = $.fn.removeClass;
            $.fn.addClass = function () {
                for (var i in arguments) {
                    var arg = arguments[i];
                    if ( !! (arg && arg.constructor && arg.call && arg.apply)) {
                        arg();
                        delete arg;
                    }
                }
                return oAddClass.apply(this, arguments);
            }
            $.fn.removeClass = function () {
                for (var i in arguments) {
                    var arg = arguments[i];
                    if ( !! (arg && arg.constructor && arg.call && arg.apply)) {
                        arg();
                        delete arg;
                    }
                }
                return oRemoveClass.apply(this, arguments);
            }