NOTE: NodeList に NodeList の連結と forEach 処理

NOTE: NodeList に NodeList の連結と forEach 処理:

Concat nodelists and use forEach method

referred from Stack Overflow

unactivate([...tabs, ...codes]); 
activate([tab, code]); 
 
function activate(elms) { 
    Array.prototype.forEach.call(elms, function(elm) { 
        elm.classList.add(CLASS_NAMES.ACTIVE); 
    }) 
} 
function unactivate(elms) { 
    Array.prototype.forEach.call(elms, function(elm) { 
        elm.classList.remove(CLASS_NAMES.ACTIVE); 
    }); 
}