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Javascript: Navbar Active class on scroll

Brave Bear answered on March 16, 2023 Popularity 4/10 Helpfulness 1/10

answer Javascript: Navbar Active class on scroll

Javascript: Navbar Active class on scroll

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/*=============================================
=            Active class on Scroll          =
=============================================*/
const sections = document.querySelectorAll('section');
const navLinks = document.querySelectorAll('nav ul li a');

window.addEventListener('scroll', function () {
  let currentPos = window.scrollY;

  sections.forEach(section => {
    let top = section.offsetTop - 60; /* height of the nav*/
    let height = section.offsetHeight;

    if (currentPos >= top && currentPos < top + height) {
      let targetId = section.getAttribute('id');
      navLinks.forEach(link => {
        if (link.getAttribute('href') === `#${targetId}`) {
          link.classList.add('active');
        } else {
          link.classList.remove('active');
        }
      });
    }
  });
});

Popularity 4/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: class javascript navbar scroll

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Contributed on Mar 16 2023

Brave Bear

0 Answers Avg Quality 2/10

Javascript: Navbar Active class on scroll

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