script.js

'use strict';



/**
 * add eventListener on multiple elements
 */

const addEventOnElements = function (elements, eventType, callback) {
  for (let i = 0, len = elements.length; i < len; i++) {
    elements[i].addEventListener(eventType, callback);
  }
}



/**
 * PRELOADER
 */

const preloader = document.querySelector("[data-preloader]");
const circle = document.querySelector("[data-circle]");

window.addEventListener("load", function () {
  preloader.classList.add("loaded");
  circle.style.animation = "none";
  document.body.classList.add("loaded");
});



/**
 * NAVBAR TOGGLER FOR MOBILE
 */

const navbar = document.querySelector("[data-navbar]");
const navTogglers = document.querySelectorAll("[data-nav-toggler]");
const overlay = document.querySelector("[data-overlay]");

const toggleNavbar = function () {
  navbar.classList.toggle("active");
  overlay.classList.toggle("active");
  document.body.classList.toggle("nav-active");
}

addEventOnElements(navTogglers, "click", toggleNavbar);



/**
 * HEADER
 * 
 * add active class on header when window scroll down to 100px
 */

const header = document.querySelector("[data-header]");

const headerActive = function () {
  if (window.scrollY > 100) {
    header.classList.add("active");
  } else {
    header.classList.remove("active");
  }
}

window.addEventListener("scroll", headerActive);