blow/static/js/page.js

function activeTocItem(){var e=window.scrollY;console.log(e)}function findCorrespondingTocTitle(n){return[...document.querySelectorAll("#toc li a")].find(e=>e.href.substring(e.href.indexOf("#"))==="#"+n.id)}document.addEventListener("DOMContentLoaded",function(){document.getElementById("navbar").clientHeight,document.getElementById("toc");var e=document.querySelectorAll("#toc li a");document.getElementById("page-content");window.addEventListener("scroll",activeTocItem);let o=null;const n=new window.IntersectionObserver(e=>{e.forEach(n=>{if(n.isIntersecting){console.log(n,"active");let e=findCorrespondingTocTitle(n.target);void 0===e||null!==o&&o===e||(console.log("here"),null!==o&&(console.log(e),o.classList.remove("bg-blue-800")),o=e),e.classList.add("bg-blue-800")}})},{root:null,threshold:.1});var t=[];[...e].forEach(e=>{t.push(e.href.substring(e.href.indexOf("#")))});const l=document.querySelectorAll(t.join(","));l.forEach(e=>{n.observe(e)})});