Expand/Collapse Widget Demo

HTML (HyperText Markup Language)

HTML is the standard markup language for creating web pages. It provides the structure and content of websites by using a system of tags and attributes.

HTML works alongside CSS for styling and JavaScript for interactivity to create complete web experiences.

CSS Best Practices

1. Use semantic class names that describe the content

2. Keep specificity low to make styles more reusable

3. Organize styles logically, grouping related properties

4. Use CSS variables for consistent theming

5. Test responsiveness across different screen sizes

How This Widget Works

The expand/collapse functionality is achieved using JavaScript to toggle classes on the details container.

function toggleExpand(button) {
    const details = button.nextElementSibling;
    button.classList.toggle('expanded');
    details.classList.toggle('expanded');
}
                    

Why Use Expand/Collapse Widgets?

Space Efficiency: Keep your page clean by hiding non-essential content

Better UX: Users can focus on relevant information without clutter

Mobile Friendly: Perfect for smaller screens where space is limited

Accessibility: Smooth animations and clear visual feedback improve usability

Performance: Reduces initial page load by deferring content expansion