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script.js
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script.js
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'use strict';
const modal = document.querySelector('.modal');
const overlay = document.querySelector('.overlay');
const btnCloseModal = document.querySelector('.btn--close-modal');
const btnsOpenModal = document.querySelectorAll('.btn--show-modal');
const btnScrollTo = document.querySelector('.btn--scroll-to');
const section1 = document.querySelector('#section--1');
const nav = document.querySelector('.nav');
const tabs = document.querySelectorAll('.operations__tab');
const tabsContainer = document.querySelector('.operations__tab-container');
const tabsContent = document.querySelectorAll('.operations__content');
///////////////////////////////////////
// Modal window
const openModal = function (e) {
e.preventDefault();
modal.classList.remove('hidden');
overlay.classList.remove('hidden');
};
const closeModal = function () {
modal.classList.add('hidden');
overlay.classList.add('hidden');
};
btnsOpenModal.forEach(btn => btn.addEventListener('click', openModal));
btnCloseModal.addEventListener('click', closeModal);
overlay.addEventListener('click', closeModal);
document.addEventListener('keydown', function (e) {
if (e.key === 'Escape' && !modal.classList.contains('hidden')) {
closeModal();
}
});
///////////////////////////////////////
// BUTON SCROLL
btnScrollTo.addEventListener('click', function (e) {
const s1coords = section1.getBoundingClientRect();
// scrolling
// window.scrollTo(
// s1coords.left + window.pageYOffset,
// s1coords.top + window.pageYOffset
// );
// window.scrollTo({
// left: s1coords.left + window.pageXOffset,
// top: s1coords.top + window.pageYOffset,
// behavior: 'smooth',
// });
section1.scrollIntoView({ behavior: 'smooth' });
});
///////////////////
// PAGE NAVIGATION
document.querySelector('.nav__links').addEventListener('click', function (e) {
e.preventDefault();
// Matching stategy
if (e.target.classList.contains('nav__link')) {
const id = e.target.getAttribute('href');
document.querySelector(id).scrollIntoView({ behavior: 'smooth' });
}
});
///////////////////////////////////////
// TABBED CONTENT
tabsContainer.addEventListener('click', function (e) {
const clicked = e.target.closest('.operations__tab');
// Guard clause
if (!clicked) return;
// Remove active classes
tabs.forEach(t => t.classList.remove('operations__tab--active'));
tabsContent.forEach(c => c.classList.remove('operations__content--active'));
// Activate tab
clicked.classList.add('operations__tab--active');
// Activate content area
document
.querySelector(`.operations__content--${clicked.dataset.tab}`)
.classList.add('operations__content--active');
});
///////////////////////////////////////
// MANU FADE ANIMATION
// Refactored
const handleHover = function (e) {
if (e.target.classList.contains('nav__link')) {
const link = e.target;
const siblings = link.closest('.nav').querySelectorAll('.nav__link');
const logo = link.closest('.nav').querySelector('img');
siblings.forEach(el => {
if (el !== link) el.style.opacity = this;
});
logo.style.opacity = this;
}
};
// passing 'argument' into handler
// mouse over bubbles, mouseenter niet
nav.addEventListener('mouseover', handleHover.bind(0.5));
nav.addEventListener('mouseout', handleHover.bind(1));
///////////////////////////////////////
// STICKY NAVIGATION
// VIA SCROLL EVENT
// const initialCoords = section1.getBoundingClientRect();
// window.addEventListener('scroll', function () {
// if (window.scrollY > initialCoords.top) nav.classList.add('sticky');
// else nav.classList.remove('sticky');
// });
// VIA INTERSECTION OBSERVER API
const header = document.querySelector('.header');
const navHeight = nav.getBoundingClientRect().height;
const stickyNav = function (entries) {
const [entry] = entries;
if (!entry.isIntersecting) nav.classList.add('sticky');
else nav.classList.remove('sticky');
};
const headerObserver = new IntersectionObserver(stickyNav, {
root: null,
threshold: 0,
rootMargin: `-${navHeight}px`,
});
headerObserver.observe(header);
// REVEAL ELEMENTS ON SCROLL
const allSections = document.querySelectorAll('.section');
const revealSection = function (entries, observer) {
const [entry] = entries;
// Guard clause
if (!entry.isIntersecting) return;
entry.target.classList.remove('section--hidden');
// Unobserve
observer.unobserve(entry.target);
};
const sectionObserver = new IntersectionObserver(revealSection, {
root: null,
threshold: 0.15,
});
allSections.forEach(function (section) {
sectionObserver.observe(section);
// section.classList.add('section--hidden');
});
// Lazy loading images
// All images with the data-src images are goning to be selected
const imgTargets = document.querySelectorAll('img[data-src]');
const loadImg = function (entries, observer) {
const [entry] = entries;
if (!entry.isIntersecting) return;
// Replace src with data-src
entry.target.src = entry.target.dataset.src;
entry.target.addEventListener('load', function () {
entry.target.classList.remove('lazy-img');
});
observer.unobserve(entry.target);
};
const imgObserver = new IntersectionObserver(loadImg, {
root: null,
threshold: 0,
rootMargin: '200px',
});
imgTargets.forEach(img => imgObserver.observe(img));
// Slider animation
const slider = function () {
const slides = document.querySelectorAll('.slide');
const btnLeft = document.querySelector('.slider__btn--left');
const btnRight = document.querySelector('.slider__btn--right');
const dotContainer = document.querySelector('.dots');
let curSlide = 0;
const maxSlide = slides.length;
// Functions
const createDots = function () {
slides.forEach(function (_, i) {
dotContainer.insertAdjacentHTML(
'beforeend',
`<button class="dots__dot" data-slide="${i}"></button>`
);
});
};
const activateDot = function (slide) {
document
.querySelectorAll('.dots__dot')
.forEach(dot => dot.classList.remove('dots__dot--active'));
document
.querySelector(`.dots__dot[data-slide="${slide}"]`)
.classList.add('dots__dot--active');
};
const goToSlide = function (slide) {
slides.forEach(
(s, i) => (s.style.transform = `translateX(${100 * (i - slide)}%)`)
);
// curSlide = 1: -100%, 0%, 100%, 200%
};
// Go to next slide -> change % to slide you want to move to to 0 %
const nextSlide = function () {
if (curSlide === maxSlide - 1) {
curSlide = 0;
} else {
curSlide++;
}
goToSlide(curSlide);
activateDot(curSlide);
};
const prevSlide = function () {
if (curSlide === 0) {
curslide = maxSlide - 1;
} else {
curSlide--;
}
goToSlide(curSlide);
activateDot(curSlide);
};
const init = function () {
goToSlide(0);
createDots();
activateDot(0);
};
init();
// Event Handlers
btnRight.addEventListener('click', nextSlide);
btnLeft.addEventListener('click', prevSlide);
document.addEventListener('keydown', function (e) {
if (e.key === 'ArrowLeft') prevSlide();
//shortcirquiting
e.key === 'ArrowRight' && nextSlide();
});
// Eventdelegation (adding a handler to parentelement of the needed child elements)
dotContainer.addEventListener('click', function (e) {
if (e.target.classList.contains('dots__dot')) {
// restructuring, reading from the object
const { slide } = e.target.dataset;
goToSlide(slide);
activateDot(slide);
}
});
};
slider();
/*
// REFERENCE CLASSES
///////////////////
// Selecting, Creating, and Deleting Elements
// Selecting elements
console.log(document.documentElement);
console.log(document.head);
console.log(document.body);
const header = document.querySelector('.header');
const allSections = document.querySelectorAll('.section');
console.log(allSections);
document.getElementById('section--1');
const allButtons = document.getElementsByTagName('button');
console.log(allButtons);
console.log(document.getElementsByClassName('btn'));
// Creating and inserting elements
const message = document.createElement('div');
message.classList.add('cookie-message');
// message.textContent = 'We use cookied for improved functionality and analytics.';
message.innerHTML =
'We use cookied for improved functionality and analytics. <button class="btn btn--close-cookie">Got it!</button>';
// header.prepend(message);
header.append(message);
// header.append(message.cloneNode(true));
// header.before(message);
// header.after(message);
// Delete elements
document
.querySelector('.btn--close-cookie')
.addEventListener('click', function () {
// message.remove();
message.parentElement.removeChild(message);
});
*/
/*
///////////////////////////////////////
// Styles, Attributes and Classes
// Styles
message.style.backgroundColor = '#37383d';
message.style.width = '120%';
console.log(message.style.color);
console.log(message.style.backgroundColor);
console.log(getComputedStyle(message).color);
console.log(getComputedStyle(message).height);
message.style.height =
Number.parseFloat(getComputedStyle(message).height, 10) + 30 + 'px';
// CSS VARIABLES VERANDEREN
document.documentElement.style.setProperty('--color-primary', 'orangered');
// ATTRIBUTES
const logo = document.querySelector('.nav__logo');
console.log(logo.alt);
console.log(logo.src);
logo.alt = 'beautifull minimalist logo';
console.log(logo.getAttribute('src'));
console.log(link.getAttribute('href'));
// Data attributes
console.log(logo.dataset.versionNumber);
logo.classList.add();
logo.classList.remove();
logo.classList.toggle();
logo.classList.contains();
*/
///////////////////////////////////////
/*
// SMOOTH SCROLL
const btnScrollTo = document.querySelector('.btn--scroll-to');
const section1 = document.querySelector('#section--1');
// Manier 1
btnScrollTo.addEventListener('click', function (e) {
const s1coords = section1.getBoundingClientRect();
console.log(s1coords);
// scrolling
// window.scrollTo(
// s1coords.left + window.pageYOffset,
// s1coords.top + window.pageYOffset
// );
// window.scrollTo({
// left: s1coords.left + window.pageXOffset,
// top: s1coords.top + window.pageYOffset,
// behavior: 'smooth',
// });
section1.scrollIntoView({ behavior: 'smooth' });
});
*/
///////////////////////////////////////
// TYPES OF EVENTS AND EVENT HANDLERS
/*
const h1 = document.querySelector('h1');
const alertH1 = function (e) {
alert('addEventListener: Great! You are reading the heading : D');
h1.removeEventListener('mouseenter', alertH1);
};
h1.addEventListener('mouseenter', alertH1);
setTimeout(() => h1.removeEventListener('mouseenter', alertH1), 3000);
// h1.onmouseenter = function (e) {
// alert('addEventListener: Great! You are reading the heading : D');
// };
*/
///////////////////////////////////////
// EVENT PROPAGATION
/*
// rgb(255, 255, 255)
const randomInt = (min, max) =>
Math.floor(Math.random() * (max - min + 1) + min);
const randomColor = () =>
`rgb(${randomInt(0, 255)}, ${randomInt(0, 255)}, ${randomInt(0, 255)})`;
document.querySelector('.nav__link').addEventListener('click', function (e) {
this.style.backgroundColor = randomColor();
console.log('LINK', e.target, e.currentTarget);
e.stopPropagation();
});
document.querySelector('.nav__links').addEventListener('click', function (e) {
this.style.backgroundColor = randomColor();
console.log('CONTAINER', e.target, e.currentTarget);
});
document.querySelector('.nav').addEventListener('click', function (e) {
this.style.backgroundColor = randomColor();
console.log('NAV', e.target, e.currentTarget);
});
*/
/*
///////////////////////////////////////
// DOM TRAVERSING
const h1 = document.querySelector('h1');
// Going downwards: child
// querySelector gaat zo diep als de kinderen zijn
// Met querySleector pak je niet andere elementen met de zlefde class, maar met een andere parent.
// ChildNodes geeft van alles.
console.log(h1.querySelectorAll('.highlight'));
console.log(h1.childNodes);
// Werkt alleen met directe children
console.log(h1.children);
h1.firstElementChild.style.color = 'white';
h1.lastElementChild.style.color = 'orangered';
// Going upwards: parents
console.log(h1.parentNode);
console.log(h1.parentElement);
// Soms hebben we een parent element nodig, hoever die ook is in de DOM tree. Met closest gebruik je een query string).
// Deze gebruik je veel! Vooral met eventDelegation
// Closest is eigenlijk het tegenovergestelde als queryselector. beide geebruiken een query string als input. Queryselector pakt alle childs van een parent. Closest pakt alle parents.
h1.closest('.header').style.background = 'var(--gradient-secondary)';
h1.closest('h1').style.background = 'var(--gradient-secondary)';
// Selecting sibling
// We kunnen alleen direct siblings bereiken in javascript.
// Dat zijn de previous en next siblings.
console.log(h1.previousElementSibling);
console.log(h1.nextElementSibling);
// Dit heb je ook voor nodes
console.log(h1.previousSibling);
console.log(h1.nextSibling);
// Als je wel alle nodes wil, kan je gebruik maken van parentElement en dan children.
console.log(h1.parentElement.children);
[...h1.parentElement.children].forEach(function (el) {
if (el !== h1) el.style.transform = 'scale(0.5)';
});
*/
/*
///////////////////////////////////////
// INTERSECTION OBSERVER API
const obsCallback = function (entries, observer) {
entries.forEach(entry => {
console.log(entry);
});
};
const obsOptions = {
root: null,
threshold: [0, 0.2],
};
const observer = new IntersectionObserver(obsCallback, obsOptions);
// section is the target here
observer.observe(section1);
*/
/*
///////////////////////////////////////
// Lifecycle DOM Events
// DOM content Loaded
document.addEventListener('DOMContentLoaded', function (e) {});
// Load event
window.addEventListener(‘load’, function(e){
})
// Before unload
window.addEventListener('beforeunload', function(e){
e.preventDefault();
})
*/