79 lines
1.8 KiB
JavaScript
79 lines
1.8 KiB
JavaScript
/**
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* Utils
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*/
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// Throttle
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//
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const throttle = (callback, limit) => {
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let timeoutHandler = null;
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return () => {
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if (timeoutHandler == null) {
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timeoutHandler = setTimeout(() => {
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callback();
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timeoutHandler = null;
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}, limit);
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}
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};
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};
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/**
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* Functions
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*/
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// Auto Hide Header
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//
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let lastScrollPosition = window.pageYOffset;
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let header = document.getElementById('site-header');
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const autoHideHeader = () => {
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let currentScrollPosition = window.pageYOffset;
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if (currentScrollPosition > lastScrollPosition) {
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header.classList.remove('slideInUp');
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header.classList.add('slideOutDown');
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} else {
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header.classList.remove('slideOutDown');
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header.classList.add('slideInUp');
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}
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lastScrollPosition = currentScrollPosition;
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}
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// Mobile Menu Toggle
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//
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let mobileMenu = document.getElementById('mobile-menu');
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let mobileMenuVisible = false;
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const mobileMenuToggle = () => {
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if (mobileMenuVisible == false) {
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mobileMenu.style.animationName = 'bounceInRight';
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mobileMenu.style.webkitAnimationName = 'bounceInRight';
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mobileMenu.style.display = 'block';
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mobileMenuVisible = true;
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} else {
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mobileMenu.style.animationName = 'bounceOutRight';
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mobileMenu.style.webkitAnimationName = 'bounceOutRight'
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mobileMenuVisible = false;
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}
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}
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// Show Featured Image
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//
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const showFeaturedImg = () => {
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document.getElementById('bg-img').classList.add('show-bg-img');
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}
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const showContent = () => {
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document.getElementById('bg-img').classList.remove('show-bg-img');
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}
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if (haveHeader == true) {
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document.getElementById('menu-btn').addEventListener('click', mobileMenuToggle);
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window.addEventListener('scroll', throttle(() => {
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autoHideHeader();
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if (mobileMenuVisible == true) {
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mobileMenuToggle();
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}
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}, 250));
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}
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