Unverified50% confidenceFactExact time
WCAG由万维网联盟（W3C）下属的Web无障碍倡议（WAI）工作组制定，经历了1.0（1999年）、2.0（2008年）、2.1（2018年）到2.2（2023年）的演进
1
Sources
50%
Confidence
Long-term
Relevance
7/13/2026
First Seen
Sources
92%美国城市官网无障碍不达标：ADA合规现状与改进指南
hackernewshackernews7/9/2026
Related Claims
UnverifiedWCAG is developed by W3C; the current mainstream version is WCAG 2.1, and WCAG 2.2 was officially released in 2023.77% similarUnverifiedWebAssembly于2019年成为W3C正式标准68% similarUnverifiedWebRTC officially became a W3C international standard in 2021.65% similarUnverifiedWebAssembly 于2017年在所有主流浏览器中同步发布 MVP 版本，2019年正式成为 W3C 推荐标准63% similarUnverified2020年起WWDC转为线上形式60% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/502222API
curl https://kongchang.com/api/v1/knowledge/claims/502222MCP
get_claim(id=502222)