11:T52a, let isObserving = false const config = { subtree: true, characterData: true }; const callback = function (mutationsList, observer) { for (const mutation of mutationsList) { if (mutation.type === 'characterData') { onPageLoad() } } }; const observer = new MutationObserver(callback); const setActiveTab = (options, currentTabContent) => { const active = Array.from(options).find(el => el.textContent === currentTabContent); active.classList.add('active-filter') options.forEach((option) => { option.addEventListener('click', () => { const activeFilter = document.querySelector('.active-filter') if (activeFilter) { activeFilter.classList.remove('active-filter') } option.classList.add('active-filter') }) }) } function onPageLoad() { const options = document.querySelectorAll('.notion-dropdown__option') const currentTab = document.querySelector('.notion-dropdown__button-title') if (options && currentTab) { setActiveTab(options, currentTab.textContent) } if (!isObserving) { const header = document.querySelector('.notion-header'); observer.observe(header, config); isObserving = true } } document.addEventListener("DOMContentLoaded", onPageLoad); 14:T6e5,

Notion 101: Bases de datos & Fórmulas