WCAG
WCAG（Web Content Accessibility Guidelines，网页内容无障碍指南），由 W3C 制定的国际公认网页无障碍技术规范。四大原则记忆口诀 POUR：可感知（Perceivable）、可操作（Operable）、可理解（Understandable）、健壮（Robust）。当前主版本为 WCAG 2.2。
English Definition
"Web Content Accessibility Guidelines, a set of internationally recognized technical specifications developed by the W3C to make web content more accessible to people with disabilities; built on the four POUR principles: Perceivable, Operable, Understandable, Robust. Current major version is 2.2."
用法说明 · 针对中文母语者
中文圈内通常直接说 WCAG。设计/前端面试常考。合规等级 A / AA / AAA。
常见错误
- ·把 WCAG 误以为是法律——它是技术规范，各国法律（如美国 ADA、欧洲 EAA）会引用它
- ·以为遵守 WCAG 就完全无障碍——许多实际场景（认知负荷、情境障碍）WCAG 未覆盖
真实用例 · 2 条
"the World Wide Web Consortium (W3C) introduced the Web Content Accessibility Guidelines (WCAG), aiming to ensure equal access to online content through universal design principles."
"Yet, research shows that WCAG standards remain insufficiently implemented in most government and telecommunications websites, and that as web design grows more complex, accessibility tends to decline."