Building a Gallery App with JavaScript

原创已于 2025-10-17 14:16:52 修改 · 763 阅读

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于 2025-10-17 14:16:35 首次发布

In this article, we will explore how to build a simple gallery application using JavaScript. The gallery will allow users to display and interact with images stored in an array. We'll cover the basics of HTML, CSS, and JavaScript, including DOM manipulation and event handling. By the end of this guide, you will have a fully functional gallery app that can be extended for more complex features.

Content:

Introduction

A gallery is a great way to showcase multiple images or visual content. This article will walk you through creating a basic gallery application using JavaScript. By the end of it, you'll have a fully functional gallery that allows users to view and navigate through a collection of images.

Setting Up Your Project

First, create a new folder for your project and open it in your preferred code editor. Inside this folder, create the following files:

index.html
styles.css
script.js

HTML Structure

The index.html file will contain the structure of our gallery application. Here's what it should look like:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Gallery App</title>
    <link rel="stylesheet" href="styles.css">
</head>
<body>
    <div class="gallery-container">
        <h1>My Gallery</h1>
        <img id="image" src="" alt="Gallery Image">
        <button id="prev">Prev</button>
        <button id="next">Next</button>
    </div>
    <script src="script.js"></script>
</body>
</html>

Adding Styling

For styling, you can use styles.css. Here’s a simple example:

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

.gallery-container {
    max-width: 600px;
    margin: 50px auto;
    text-align: center;
}

#image {
    width: 100%;
    height: auto;
}

button {
    margin: 10px;
}

JavaScript Implementation

Now let's add some JavaScript functionality to make our gallery interactive. In script.js, we’ll handle image loading, navigation, and looping.

document.addEventListener('DOMContentLoaded', () => {
    const images = [
        'https://via.placeholder.com/350x150',
        'https://via.placeholder.com/350x200',
        'https://via.placeholder.com/350x250',
        'https://via.placeholder.com/350x300'
    ];

    let currentIndex = 0;

    const imageElement = document.getElementById('image');
    const prevButton = document.getElementById('prev');
    const nextButton = document.getElementById('next');

    function loadImage() {
        imageElement.src = images[currentIndex];
    }

    function handlePrevClick() {
        currentIndex = (currentIndex - 1 + images.length) % images.length;
        loadImage();
    }

    function handleNextClick() {
        currentIndex = (currentIndex + 1) % images.length;
        loadImage();
    }

    prevButton.addEventListener('click', handlePrevClick);
    nextButton.addEventListener('click', handleNextClick);

    // Load the first image on page load
    loadImage();
});

Extending the Gallery

This basic gallery app can be expanded in many ways, such as adding pagination, loading images dynamically from a server, implementing keyboard shortcuts, or even integrating with a database. You could also enhance the user experience by adding animations or improving accessibility.

Conclusion

By following this guide, you've built a simple yet effective gallery application using JavaScript. With these foundational skills, you can now start building more complex applications. Experiment with different features and styles to make your gallery unique and engaging.

from: https://www.js-obfuscator.com/article/45714081.html