What are the core concepts covered in Web Accessibility (WCAG 2.2) & ARIA States?

The 4 WCAG Principles: Perceivable, Operable, Understandable, Robust (POUR); When and why to use ARIA roles and attributes; Managing keyboard focus and tab navigation

Intermediate 18 min readModule: Module 8: Web Accessibility (WCAG 2.2 / ARIA)

Web Accessibility (WCAG 2.2) & ARIA States

Master accessible web applications: ARIA roles, aria-expanded, aria-live, tabindex, and focus management.

What You Will Learn in This Lesson

The 4 WCAG Principles: Perceivable, Operable, Understandable, Robust (POUR)
When and why to use ARIA roles and attributes
Managing keyboard focus and tab navigation

Introduction & Core Concept

Web Accessibility (a11y) ensures that websites are usable by everyone, including people with visual, auditory, motor, or cognitive disabilities.

WHY DOES THIS MATTER IN THE REAL WORLD?

Building accessible web apps is a legal requirement in many jurisdictions and universally improves UX for all users.

Accessible Collapsible Accordion

html

1
2
3
4
5
6
<button aria-expanded="false" aria-controls="panel-1" id="accordion-btn">
  What is KWAS Academy?
</button>
<div id="panel-1" role="region" aria-labelledby="accordion-btn" hidden>
  <p>KWAS Academy is a modern engineering platform.</p>
</div>

Line-by-Line Technical Breakdown

1First rule of ARIA: Do not use ARIA if a native HTML element already exists.

Try It Yourself (Interactive Editor)

Modify the code in real-time and click Run to test live browser output and console logs.

Intelligent Code Runner & Live Sandbox[HTML]

HTML SOURCE EDITOR

Interactive Live Code

Industry Best Practices & Professional Standards

Always use native HTML buttons and anchor links instead of clickable divs.

Lesson Summary & Core Takeaways

Accessibility guarantees inclusive software experiences for all users.