static/script.js

class MobileNavbar {
    constructor(mobileMenu, navList, navLinks) {
        this.mobileMenu = document.querySelector(mobileMenu);
        this.navList = document.querySelector(navList);
        this.navLinks = document.querySelectorAll(navLinks);
        this.activeClass = "active";
        
        this.handleClick = this.handleClick.bind(this);
    }
    animateLinks(){
        this.navLinks.forEach((link) => {
            link.style.animation
                ? (link.style.animation = "")
                : (link.style.animation = 'navLinkFade 0.5s ease forwards 0.3s')
            
        });
    }
    handleClick(){
        this.navList.classList.toggle(this.activeClass);
        this.mobileMenu.classList.toggle(this.activeClass);
        this.animateLinks();

    }
    addClickEvent(){
        this.mobileMenu.addEventListener("click", this.handleClick);
    }

    init () {
        if (this.mobileMenu) {
            this.addClickEvent();
        }
        return this;
    }
}   

const mobileNavbar = new MobileNavbar(
    ".mobile-menu",
    ".nav-list",
    ".nav-list li",
);
mobileNavbar.init();