mrennekamp / centos / centos.org

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window.addEventListener("DOMContentLoaded",()=>{const e=new IntersectionObserver(e=>{e.forEach(e=>{const t=e.target.getAttribute("id");e.intersectionRatio>0?document.querySelector(`nav li a[href="#${t}"]`).parentElement.classList.add("active"):document.querySelector(`nav li a[href="#${t}"]`).parentElement.classList.remove("active")})});document.querySelectorAll("h2[id]").forEach(t=>{e.observe(t)})});