JavaScript Image Gallery with Lightbox

<!DOCTYPE html>
<html lang=en>
<head>
    <meta charset=UTF-8>
    <meta name=viewport content="width=device-width, initial-scale=1.0">
    <title>Image Gallery with Lightbox</title>
    <style>
        .gallery {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .gallery img {
            width: 150px;
            height: auto;
            cursor: pointer;
            transition: transform 0.3s ease;
        }
        .gallery img:hover {
            transform: scale(1.05);
        }
        .lightbox {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            justify-content: center;
            align-items: center;
        }
        .lightbox img {
            max-width: 90%;
            max-height: 90%;
        }
    </style>
</head>
<body>
    <div class=gallery>
        <img src=https://via.placeholder.com/300x200 alt="Image 1" onclick=openLightbox(this)>
        <img src=https://via.placeholder.com/300x200 alt="Image 2" onclick=openLightbox(this)>
        <img src=https://via.placeholder.com/300x200 alt="Image 3" onclick=openLightbox(this)>
        <img src=https://via.placeholder.com/300x200 alt="Image 4" onclick=openLightbox(this)>
    </div>

    <div class=lightbox id=lightbox onclick=closeLightbox()>
        <img src alt="Lightbox Image" id=lightboxImage>
    </div>

    <script>
        function openLightbox(image) {
            const lightbox = document.getElementById('lightbox');
            const lightboxImage = document.getElementById('lightboxImage');
            lightboxImage.src = image.src;
            lightbox.style.display = 'flex';
        }

        function closeLightbox() {
            const lightbox = document.getElementById('lightbox');
            lightbox.style.display = 'none';
        }
    </script>
</body>
</html>

Explanation

HTML Structure: The gallery is composed of image elements wrapped in a container. Each image has an onclick event that triggers the lightbox.

CSS Styling:

- The gallery is styled with flexbox to arrange images in a responsive grid.

- The lightbox is a full-screen overlay with a semi-transparent background. It centers the selected image using flexbox.

JavaScript Functionality:

- openLightbox(image): This function displays the lightbox and sets the source of the large image to the clicked thumbnail.

- closeLightbox(): This function hides the lightbox when the overlay is clicked.

Usage

Web Galleries: Implement this snippet on any webpage to enhance image viewing experiences.

Responsive Design: Easily adjust CSS to fit different screen sizes and orientations.

Customization: Extend functionality by adding image captions, navigation arrows, or animations.

This snippet demonstrates how to create an elegant and interactive image gallery with a lightbox effect, providing a useful tool for web developers aiming to improve user engagement on their websites.

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JavaScript Image Gallery with Lightbox