Web Development Beginner

What is Web Accessibility (a11y)?

The practice of designing websites that can be used by people with disabilities, following WCAG guidelines.

Web accessibility ensures websites are usable by everyone, including people with visual, auditory, motor, and cognitive disabilities. WCAG (Web Content Accessibility Guidelines) defines standards at levels A, AA (common target), and AAA.

Key practices include semantic HTML, alt text for images, keyboard navigation, sufficient color contrast, ARIA attributes, screen reader compatibility, and captions for media. Accessibility also benefits SEO and general usability.

Learn More About This Topic

PHP & MySQL Web Applications

Related reading

PHP Fundamentals

Related reading

PHP for Absolute Beginners: A Step-by-Step Introduction

Related reading

Related Terms

A JavaScript file that runs in the background, enabling offline support, push notifications, and background sync for web apps.

SSR (Server-Side Rendering)

A technique where web pages are rendered on the server and sent as complete HTML to the browser, improving SEO and initial load time.

Progressive Enhancement

A web design strategy that starts with basic functionality for all browsers and progressively adds advanced features for capable ones.

A typed superset of JavaScript that adds static type checking, interfaces, and advanced IDE support to JavaScript development.

A CSS layout model that provides efficient arrangement of items within a container, handling alignment, distribution, and spacing.

Server-Sent Events

A server push technology that enables a server to send real-time updates to a browser over a single HTTP connection.

View All Web Development Terms →