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document.addEventListener('DOMContentLoaded', function () {
const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
const nav = document.createElement('nav');
document.querySelector('.pandoc').insertBefore(nav, document.querySelector('.pandoc').firstChild);
const topLevelList = document.createElement('ul');
nav.appendChild(topLevelList);
let currentLevel = topLevelList;
let lastLevel = 1;
headings.forEach(heading => {
const listItem = document.createElement('li');
const anchor = document.createElement('a');
anchor.textContent = heading.textContent;
anchor.href = `#${heading.textContent.replace(/\s+/g, '-').toLowerCase()}`;
listItem.appendChild(anchor);
const level = parseInt(heading.tagName.charAt(1));
if (level > lastLevel) {
const newUl = document.createElement('ul');
currentLevel.lastElementChild.appendChild(newUl);
currentLevel = newUl;
} else if (level < lastLevel) {
for (let i = level; i < lastLevel; i++) {
currentLevel = currentLevel.parentElement.parentElement;
}
}
currentLevel.appendChild(listItem);
lastLevel = level;
});
// document.body.insertBefore(nav, document.body.firstChild);
// Add functionality for expanding/collapsing
const navLinks = document.querySelectorAll('nav ul li');
navLinks.forEach(link => {
const sublist = link.querySelector('ul');
if (sublist) {
link.classList.add('toggle');
sublist.style.display = 'none';
link.addEventListener('click', (e) => {
if (e.target === link || e.target === link.firstChild) {
sublist.style.display = sublist.style.display === 'none' ? 'block' : 'none';
link.classList.toggle('expanded');
}
});
}
});
});
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