CSS Grid Image Gallery

css-grid practice

by allen Yu

HTML

<div class="overlay">
  <div class="overlay-inner">
    <button class="close">× Close</button>
    <img>
  </div>
</div>
<section class="gallery">
</section>

CSS

* {
  box-sizing: border-box;
}

body {
  padding: 50px;
  font-family: sans-serif;
  background: linear-gradient(to right, #F93D66, #6D47D9);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 5px 0;
}

p {
  margin: 0 0 20px 0;
}

.close {
  background: none;
  color: black;
  border: 0;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, 100px);
  grid-auto-rows: 100px;
  grid-auto-flow: dense;
}

.item {
  overflow: hidden;
  display: grid;
  grid-template-columns: 1;
  grid-template-rows: 1;
}

.item img {
  grid-column: 1/-1;
  grid-row: 1/-1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.item__overlay {
  background: #ffc60032;
  grid-column: 1/ -1;
  grid-row: 1/-1;
  position: relative;
  display: grid;
  justify-items: center;
  align-items: center;
  transition: 0.2s;
  transform: translateY(100%);
}

.item__overlay button {
  background: none;
  border: 2px solid white;
  color: white;
  text-transform: uppercase;
  background: rgba(0, 0, 0, 0.7);
  padding: 5px;
}

.item:hover .item__overlay {
  transform: translateY(0);
}

.item.v2 {
  grid-row: span 2;
}

.item.v3 {
  grid-row: span 3;
}

.item.v4 {
  grid-row: span 4;
}

.item.h2 {
  grid-column: span 2;
}

.item.h3 {
  grid-column: span 3;
}

.item.h4 {
  grid-column: span 4;
}

.overlay {
  position: fixed;
  background: rgba(0, 0, 0, 0.7);
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: none;
  z-index: 2;
}

.overlay.open {
  display: grid;
  align-items: center;
  justify-items: center;
}

.overlay-inner {
  background: white;
  width: 700px;
  padding: 20px;
}

.overlay img {
  width: 100%;
}

JavaScript

const gallery = document.querySelector('.gallery');
const overlay = document.querySelector('.overlay');
const overlayImage = overlay.querySelector('img');
const overlayClose = overlay.querySelector('.close');

function generateHTML([h, v]) {
  return `<div class="item h${h} v${v}">
            <img src="https://source.unsplash.com/random/300x300?v=${randomNumber(12)}">
            <div class="item__overlay">
                <button>View →</button>
            </div>
          </div>`;
}

function randomNumber(limit) {
  return Math.floor(Math.random() * limit) + 1;
}

function handleClick(e) {
  // console.log(e.currentTarget);
  const src = e.currentTarget.querySelector('img').src;
  // console.log(src);
  overlayImage.src = src;
  overlay.classList.add('open');
}

// function open() {
//     overlay.classList.add('open');
// }

function close() {
  overlay.classList.remove('open');
}

const digits = Array.from({
  length: 50
}, () => [randomNumber(4), randomNumber(4)]).concat([
  [1, 1],
  [1, 1],
  [1, 1],
  [1, 1],
  [1, 1],
  [1, 1],
  [1, 1],
  [1, 1],
  [1, 1],
  [1, 1],
  [1, 1],
  [1, 1],
  [1, 1],
  [1, 1],
  [1, 1],
  [1, 1],
  [1, 1],
  [1, 1]
]);

const html = digits.map(generateHTML).join('');
gallery.innerHTML = html;
const items = document.querySelectorAll('.item');
items.forEach(item => item.addEventListener('click', handleClick));
overlayClose.addEventListener('click', close);