Web Accessibility in React: Semantic HTML, ARIA, Focus Management, and axe Testing

Accessibility isn't a feature you add at the end — it's a quality signal that correlates with better code overall. Well-structured, accessible apps tend to have better semantics, better keyboard behavior, and better performance. Here's the practical implementation. Semantic HTML First Every accessibility problem that seems hard is often just a semantic HTML problem: // Bad -- div soup, no semantics <div className='header'> <div className='nav'> <div onClick={handleClick}>Home</div> <div onClick={handleClick}>About</div> </div> </div> // Good -- semantic HTML, keyboard accessible automatically <header> <nav aria-label='Main navigation'> <ul> <li><a href='/'>Home</a></li> <li><a href='/about'>About</a></li> </ul> </nav> </header> Landmark elements (<header>, <nav>, <main>, <aside>, <footer>) give screen reader users a way to jum