Dynamic HTML

A collection of technologies — including HTML, CSS, JavaScript, and the Document Object Model (DOM) — used together to create interactive and animated web content that can change after a page has loaded without requiring a server round-trip. Dynamic HTML was a precursor to modern single-page applications and introduced significant accessibility challenges, as assistive technologies needed to detect and communicate content changes that occurred after initial page rendering. The development of WAI-ARIA live regions was a direct response to the accessibility barriers created by dynamic content updates.