[рони]

adash,

function audit(current_tab) {
                var elems = $(".required, .city-id, #parent_cat_id, #category_id", current_tab);
                var check = true;
                 [].forEach.call(elems, function(el, i) {
                    var ok = el.value.trim();
                    el.classList.contains("city-id") && (el = el.parentNode);
                    ok && +ok != 0 ? el.classList.remove("empty_field") :
                        (el.classList.add("empty_field"),check = false);
                 });
                return check;
            }