.toc-container { background-color: #000000 !important; margin: 20px 0; border: 1px solid #ddd; border-radius: 10px; } .toc-container h2 { font-size: 24px !important; margin-top: 0; color:#fff;font-weight:800; color:white !important; } .toc-container #toc ul { list-style-type: none; padding-left: 0; margin-left:0; color:white !important; } .toc-container ul#toc li a { font-size: 16px !important; line-height:1.2; text-decoration: none; color:white !important; } .toc-container ul#toc li a.active { font-weight: bold; text-decoration: underline; } .toc-container ul#toc li a:hover { text-decoration: underline; } document.addEventListener("DOMContentLoaded", function() { const toc = document.getElementById('toc'); const content = document.querySelector('.blog-content'); const headings = content.querySelectorAll('h2'); if (headings.length === 0) { toc.innerHTML = '

No headings found

'; return; } // Create TOC entries headings.forEach((heading, index) => { const id = `heading-${index}`; heading.id = id; const level = parseInt(heading.tagName.replace('H', '')); const listItem = document.createElement('li'); const link = document.createElement('a'); link.href = `#${id}`; link.textContent = heading.textContent; listItem.style.marginLeft = `${(level - 1) * 20}px`; // Indent subheadings listItem.appendChild(link); toc.appendChild(listItem); }); // Intersection Observer to detect the active section const observer = new IntersectionObserver((entries) => { entries.forEach(entry => { const tocLink = document.querySelector(`a[href="#$entry.target.id"]`); if (entry.isIntersecting) { document.querySelectorAll('.toc-container a').forEach(link => link.classList.remove('active')); tocLink.classList.add('active'); } }); }, { threshold: 0.1 // Adjust this value to determine when a section is considered visible }); headings.forEach(heading => observer.observe(heading)); });