`; toc.insertAdjacentHTML('beforeend', html); }); document.addEventListener('DOMContentLoaded', function() { var leadText = document.querySelector('.table-of-contents-lead-text'); leadText.addEventListener('click', function() { closeTOC(); }); }); function closeTOC() { if (window.innerWidth < 992) { var contentsSections = document.querySelectorAll('.table-of-contents-section'); contentsSections.forEach(function(section) { section.classList.toggle('visible'); section.style.display = section.style.display === 'block' ? 'none' : 'block'; }); // Update the arrow rotation based on the first section's visibility var arrow = document.querySelector('.table-of-contents-lead-text > .arrow'); var firstSection = contentsSections[0]; if (firstSection.classList.contains('visible')) { arrow.style.transform = 'rotate(180deg)'; } else { arrow.style.transform = 'rotate(0deg)'; } } } document.addEventListener('DOMContentLoaded', function() { var stickyStart = toc.offsetTop; window.addEventListener('scroll', function() { if (window.pageYOffset > stickyStart) { toc.classList.add('sticky'); } else { toc.classList.remove('sticky'); } }); }); document.addEventListener('DOMContentLoaded', () => { setTimeout(function() { // Get all the anchor links const anchorLinks = document.querySelectorAll('.table-of-contents a[href^="#"]:not([href="#"])'); // Get all the target elements const targets = Array.from(anchorLinks).map((link) => { const id = link.getAttribute('href'); const targetElement = document.querySelector(id); return targetElement ? { element: targetElement, id } : null; }).filter(target => target !== null); for (const targetObj of targets) { const target = targetObj.element; const link = anchorLinks[targets.indexOf(targetObj)]; link.addEventListener("click", function (event) { event.preventDefault(); const scrollPosition = window.scrollY + target.getBoundingClientRect().top - 150; window.scrollTo({ top: scrollPosition, behavior: 'smooth' }); }); } // Create an IntersectionObserver instance const observer = new IntersectionObserver((entries) => { entries.forEach((entry) => { const target = targets.find(target => target.element === entry.target); if (target) { const link = document.querySelector(`a[href="${target.id}"]`); if (entry.isIntersecting) { link.classList.add('active'); } else { link.classList.remove('active'); } } }); }, { rootMargin: '0px', threshold: 0.1 // Change this value to adjust when the "active" class is added or removed }); // Observe the target elements targets.forEach((target) => { observer.observe(target.element); }); // Add active class on page load if a target is in the viewport window.addEventListener('load', () => { targets.forEach((target) => { const rect = target.element.getBoundingClientRect(); if (rect.top >= 0 && rect.left >= 0 && rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) && rect.right <= (window.innerWidth || document.documentElement.clientWidth)) { const link = document.querySelector(`a[href="${target.id}"]`); link.classList.add('active'); } }); }); }, 1000); });