import Rails from 'rails-ujs'; const { delegate } = Rails; delegate(document, 'body', 'click', event => { if (!event.target.closest('.dropdown')) { [...document.querySelectorAll('.dropdown')].forEach(element => element.classList.remove('open', 'fade-in-down') ); } }); delegate(document, '.dropdown-button', 'click', event => { event.stopPropagation(); const parent = event.target.closest('.dropdown-button').parentElement; if (parent.classList.contains('dropdown')) { parent.classList.toggle('open'); } });