(function(){ const wrap = document.currentScript.previousElementSibling; const container = wrap.closest('.e-langselect') || document.querySelector('.e-langselect'); const trigger = container.querySelector('.els-trigger'); const menu = container.querySelector('.els-menu'); const hidden = container.querySelector('input[name="language"]'); const labelEl = container.querySelector('.els-label'); const flagEl = container.querySelector('.els-flag'); trigger.addEventListener('click', function(e){ e.preventDefault(); container.classList.toggle('open'); trigger.setAttribute('aria-expanded', container.classList.contains('open')); }); menu.addEventListener('click', function(e){ const li = e.target.closest('[role="option"]'); if(!li) return; const { value, label, flag, href } = li.dataset; labelEl.textContent = label; flagEl.className = 'fi els-flag fi-' + flag; if(hidden) hidden.value = value; container.classList.remove('open'); trigger.setAttribute('aria-expanded','false'); if(href){ window.location.href = href; } // bỏ dòng này nếu không muốn điều hướng }); document.addEventListener('click', function(e){ if(!container.contains(e.target)){ container.classList.remove('open'); trigger.setAttribute('aria-expanded','false'); } }); })();