Dynamic Photo Gallery

Project Overview

Build an interactive photo gallery that demonstrates your understanding of arrays and DOM manipulation. This project builds on the basic photo gallery by adding dynamic features and array operations.

ArraysDOM ManipulationEvent HandlingIntermediate45 minutes

Learning Objectives

Work with arrays to manage image collections
Use array methods to filter and sort images
Implement dynamic DOM updates
Handle user interactions with event listeners
Practice array transformation methods

Project Requirements

1. Gallery Setup

Create an array of image objects with properties:
- url: string (image URL)
- title: string (image title)
- category: string (image category)
- date: Date (when added)
Display images in a responsive grid layout
Show image title and category below each image

2. Array Operations

Implement category filtering using array filter() method
Add sorting options (by date, title) using array sort() method
Create a search function using array find() or filter()
Allow adding new images to the array using push()

3. Interactive Features

Click image to view larger version in a modal
Add/remove images from favorites using array methods
Implement a slideshow feature using array iteration
Add image upload capability (URL input)

Getting Started

Step 1: Set Up Data Structure

const gallery = {
  images: [
    {
      url: 'path/to/image1.jpg',
      title: 'Mountain Landscape',
      category: 'Nature',
      date: new Date('2024-01-15')
    },
    // Add more images...
  ],
  favorites: [],
  currentCategory: 'all'
};

Step 2: Create Display Functions

function displayImages(images) {
  const gallery = document.querySelector('.gallery');
  gallery.innerHTML = images
    .map(img => `
      <div class="gallery-item">
        <img src="${img.url}" alt="${img.title}">
        <h3>${img.title}</h3>
        <p>${img.category}</p>
      </div>
    `).join('');

Step 3: Implement Array Operations

// Filter by category
function filterByCategory(category) {
  return gallery.images
    .filter(img => category === 'all' || img.category === category);
}

// Sort by date
function sortByDate() {
  return [...gallery.images]
    .sort((a, b) => b.date - a.date);
}

// Search by title
function searchImages(query) {
  return gallery.images
    .filter(img => 
      img.title.toLowerCase()
        .includes(query.toLowerCase())
    );
}

Tips for Success

Use array methods instead of loops where possible
Keep your code DRY (Don't Repeat Yourself)
Add error handling for image loading
Use meaningful variable and function names
Comment your code to explain complex operations

Bonus Challenges

Add image lazy loading for better performance
Implement drag-and-drop reordering of images
Add image categories using array grouping
Create an image carousel using array rotation