Interactive Image Gallery

snippet.publishedOn January 15, 2024 Intermediate

A responsive image gallery with lightbox functionality, filtering, and smooth animations

#gallery #lightbox #responsive #interactive

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Code Implementation

HTML

<div class="gallery-container">
  <div class="gallery-header">
    <h2>Interactive Image Gallery</h2>
    <div class="filter-buttons">
      <button class="filter-btn active" data-filter="all">All</button>
      <button class="filter-btn" data-filter="nature">Nature</button>
      <button class="filter-btn" data-filter="city">City</button>
      <button class="filter-btn" data-filter="portrait">Portrait</button>
    </div>
  </div>
  
  <div class="gallery-grid" id="galleryGrid">
    <!-- Images will be dynamically loaded here -->
  </div>
  
  <button class="load-more-btn" id="loadMoreBtn">Load More</button>
</div>

<!-- Lightbox Modal -->
<div class="lightbox" id="lightbox">
  <div class="lightbox-content">
    <span class="close-btn" id="closeBtn">&times;</span>
    <img class="lightbox-image" id="lightboxImage" src="" alt="">
    <div class="lightbox-info">
      <h3 id="lightboxTitle"></h3>
      <p id="lightboxDescription"></p>
    </div>
    <button class="nav-btn prev-btn" id="prevBtn">&#10094;</button>
    <button class="nav-btn next-btn" id="nextBtn">&#10095;</button>
  </div>
</div>

CSS

.gallery-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  background: linear-gradient(135deg, #f8f9ff 0%, #ffffff 100%);
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.gallery-header {
  text-align: center;
  margin-bottom: 30px;
}

.gallery-header h2 {
  color: #2c3e50;
  font-size: 2.5rem;
  margin-bottom: 20px;
  font-weight: 300;
}

.filter-buttons {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 20px;
  border: 2px solid #3498db;
  background: transparent;
  color: #3498db;
  border-radius: 25px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
  background: #3498db;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.gallery-item {
  position: relative;
  border-radius: 15px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s ease;
  background: white;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.gallery-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.gallery-item img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-item-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: white;
  padding: 20px;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.gallery-item:hover .gallery-item-overlay {
  transform: translateY(0);
}

.gallery-item-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 5px;
}

.gallery-item-category {
  font-size: 0.9rem;
  opacity: 0.8;
}

.load-more-btn {
  display: block;
  margin: 0 auto;
  padding: 15px 30px;
  background: linear-gradient(45deg, #3498db, #2980b9);
  color: white;
  border: none;
  border-radius: 25px;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.load-more-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(52, 152, 219, 0.3);
}

.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  z-index: 1000;
  animation: fadeIn 0.3s ease;
}

.lightbox-content {
  position: relative;
  max-width: 90%;
  max-height: 90%;
  margin: 5% auto;
  background: white;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.lightbox-image {
  width: 100%;
  height: auto;
  max-height: 70vh;
  object-fit: contain;
}

.lightbox-info {
  padding: 20px;
  background: white;
}

.lightbox-info h3 {
  margin: 0 0 10px 0;
  color: #2c3e50;
  font-size: 1.5rem;
}

.lightbox-info p {
  margin: 0;
  color: #7f8c8d;
  line-height: 1.6;
}

.close-btn {
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 2rem;
  color: white;
  cursor: pointer;
  background: rgba(0, 0, 0, 0.5);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s ease;
}

.close-btn:hover {
  background: rgba(0, 0, 0, 0.8);
}

.nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.5);
  color: white;
  border: none;
  padding: 15px 20px;
  font-size: 1.5rem;
  cursor: pointer;
  transition: background 0.3s ease;
}

.prev-btn {
  left: 20px;
  border-radius: 0 10px 10px 0;
}

.next-btn {
  right: 20px;
  border-radius: 10px 0 0 10px;
}

.nav-btn:hover {
  background: rgba(0, 0, 0, 0.8);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@media (max-width: 768px) {
  .gallery-container {
    padding: 15px;
  }
  
  .gallery-header h2 {
    font-size: 2rem;
  }
  
  .gallery-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
  }
  
  .filter-buttons {
    gap: 8px;
  }
  
  .filter-btn {
    padding: 8px 16px;
    font-size: 0.9rem;
  }
}

JavaScript

document.addEventListener('DOMContentLoaded', () => {
  const galleryGrid = document.getElementById('galleryGrid');
  const loadMoreBtn = document.getElementById('loadMoreBtn');
  const filterBtns = document.querySelectorAll('.filter-btn');
  const lightbox = document.getElementById('lightbox');
  const lightboxImage = document.getElementById('lightboxImage');
  const lightboxTitle = document.getElementById('lightboxTitle');
  const lightboxDescription = document.getElementById('lightboxDescription');
  const closeBtn = document.getElementById('closeBtn');
  const prevBtn = document.getElementById('prevBtn');
  const nextBtn = document.getElementById('nextBtn');
  
  let currentImages = [];
  let filteredImages = [];
  let currentFilter = 'all';
  let currentImageIndex = 0;
  let displayedCount = 6;
  
  // Sample image data
  const imageData = [
    {
      id: 1,
      src: 'https://picsum.photos/400/300?random=1',
      title: 'Mountain Landscape',
      description: 'Beautiful mountain scenery with crystal clear lakes',
      category: 'nature'
    },
    {
      id: 2,
      src: 'https://picsum.photos/400/300?random=2',
      title: 'City Skyline',
      description: 'Modern city architecture at sunset',
      category: 'city'
    },
    {
      id: 3,
      src: 'https://picsum.photos/400/300?random=3',
      title: 'Portrait Study',
      description: 'Artistic portrait with dramatic lighting',
      category: 'portrait'
    },
    {
      id: 4,
      src: 'https://picsum.photos/400/300?random=4',
      title: 'Forest Path',
      description: 'Peaceful walking trail through dense forest',
      category: 'nature'
    },
    {
      id: 5,
      src: 'https://picsum.photos/400/300?random=5',
      title: 'Urban Street',
      description: 'Busy street scene in downtown area',
      category: 'city'
    },
    {
      id: 6,
      src: 'https://picsum.photos/400/300?random=6',
      title: 'Creative Portrait',
      description: 'Experimental portrait with unique composition',
      category: 'portrait'
    },
    {
      id: 7,
      src: 'https://picsum.photos/400/300?random=7',
      title: 'Ocean Waves',
      description: 'Powerful waves crashing against rocky shore',
      category: 'nature'
    },
    {
      id: 8,
      src: 'https://picsum.photos/400/300?random=8',
      title: 'Night City',
      description: 'City lights reflecting on wet streets',
      category: 'city'
    },
    {
      id: 9,
      src: 'https://picsum.photos/400/300?random=9',
      title: 'Fashion Portrait',
      description: 'Stylish fashion photography with bold colors',
      category: 'portrait'
    }
  ];
  
  // Initialize gallery
  function initGallery() {
    currentImages = [...imageData];
    filterImages(currentFilter);
    renderGallery();
  }
  
  // Filter images by category
  function filterImages(category) {
    if (category === 'all') {
      filteredImages = [...currentImages];
    } else {
      filteredImages = currentImages.filter(img => img.category === category);
    }
    displayedCount = 6;
  }
  
  // Render gallery items
  function renderGallery() {
    galleryGrid.innerHTML = '';
    const imagesToShow = filteredImages.slice(0, displayedCount);
    
    imagesToShow.forEach((image, index) => {
      const galleryItem = createGalleryItem(image, index);
      galleryGrid.appendChild(galleryItem);
    });
    
    // Show/hide load more button
    loadMoreBtn.style.display = displayedCount >= filteredImages.length ? 'none' : 'block';
  }
  
  // Create gallery item element
  function createGalleryItem(image, index) {
    const item = document.createElement('div');
    item.className = 'gallery-item';
    item.innerHTML = `
      <img src="${image.src}" alt="${image.title}" loading="lazy">
      <div class="gallery-item-overlay">
        <div class="gallery-item-title">${image.title}</div>
        <div class="gallery-item-category">${image.category}</div>
      </div>
    `;
    
    item.addEventListener('click', () => openLightbox(index));
    return item;
  }
  
  // Open lightbox
  function openLightbox(index) {
    currentImageIndex = index;
    const image = filteredImages[index];
    
    lightboxImage.src = image.src;
    lightboxTitle.textContent = image.title;
    lightboxDescription.textContent = image.description;
    
    lightbox.style.display = 'block';
    document.body.style.overflow = 'hidden';
  }
  
  // Close lightbox
  function closeLightbox() {
    lightbox.style.display = 'none';
    document.body.style.overflow = 'auto';
  }
  
  // Navigate to previous image
  function prevImage() {
    currentImageIndex = currentImageIndex > 0 ? currentImageIndex - 1 : filteredImages.length - 1;
    updateLightboxImage();
  }
  
  // Navigate to next image
  function nextImage() {
    currentImageIndex = currentImageIndex < filteredImages.length - 1 ? currentImageIndex + 1 : 0;
    updateLightboxImage();
  }
  
  // Update lightbox image
  function updateLightboxImage() {
    const image = filteredImages[currentImageIndex];
    lightboxImage.src = image.src;
    lightboxTitle.textContent = image.title;
    lightboxDescription.textContent = image.description;
  }
  
  // Event listeners
  filterBtns.forEach(btn => {
    btn.addEventListener('click', () => {
      filterBtns.forEach(b => b.classList.remove('active'));
      btn.classList.add('active');
      currentFilter = btn.dataset.filter;
      filterImages(currentFilter);
      renderGallery();
    });
  });
  
  loadMoreBtn.addEventListener('click', () => {
    displayedCount += 6;
    renderGallery();
  });
  
  closeBtn.addEventListener('click', closeLightbox);
  prevBtn.addEventListener('click', prevImage);
  nextBtn.addEventListener('click', nextImage);
  
  // Keyboard navigation
  document.addEventListener('keydown', (e) => {
    if (lightbox.style.display === 'block') {
      switch(e.key) {
        case 'Escape':
          closeLightbox();
          break;
        case 'ArrowLeft':
          prevImage();
          break;
        case 'ArrowRight':
          nextImage();
          break;
      }
    }
  });
  
  // Close lightbox when clicking outside image
  lightbox.addEventListener('click', (e) => {
    if (e.target === lightbox) {
      closeLightbox();
    }
  });
  
  // Initialize the gallery on page load
  initGallery();
});