Toggles the .is-active class for a hamburger menu

toggle-menu.js

(function() {
    var burger = document.querySelector('.nav-toggle');
    var menu = document.querySelector('.nav-menu');
    burger.addEventListener('click', function() {
        burger.classList.toggle('is-active');
        menu.classList.toggle('is-active');
    });
})();

const navSlide = () => {
const burger = document.querySelector('.burger');
const nav = document.querySelector('.nav-link');
const navlink = document.querySelectorAll('.nav-link li');

burger.addEventListener("click", () => {
    nav.classList.toggle('nav-active');
});
    navlink.forEach((link, index) => {
        link.style.animation = 'navlinkfade 0.5s ease forwards ${index/7}s';
        console.log(index/5); 
    });

}
navSlide();