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script.js
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script.js
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'use strict';
/**
* add event on element
*/
const addEventOnElem = function (elem, type, callback) {
if (elem.length > 1) {
for (let i = 0; i < elem.length; i++) {
elem[i].addEventListener(type, callback);
}
} else {
elem.addEventListener(type, callback);
}
}
/**
* navbar toggle
*/
const navbar = document.querySelector("[data-navbar]");
const navTogglers = document.querySelectorAll("[data-nav-toggler]");
const navLinks = document.querySelectorAll("[data-nav-link]");
const overlay = document.querySelector("[data-overlay]");
const toggleNavbar = function () {
navbar.classList.toggle("active");
overlay.classList.toggle("active");
}
addEventOnElem(navTogglers, "click", toggleNavbar);
const closeNavbar = function () {
navbar.classList.remove("active");
overlay.classList.remove("active");
}
addEventOnElem(navLinks, "click", closeNavbar);
/**
* header active when scroll down to 100px
*/
const header = document.querySelector("[data-header]");
const backTopBtn = document.querySelector("[data-back-top-btn]");
const activeElem = function () {
if (window.scrollY > 100) {
header.classList.add("active");
backTopBtn.classList.add("active");
} else {
header.classList.remove("active");
backTopBtn.classList.remove("active");
}
}
addEventOnElem(window, "scroll", activeElem);