Webアクセシビリティ
スクリーンリーダー、キーボード、ズーム、ハイコントラストを使う人にも使えるページの作り方を学ぶ6つのユニットです。各ユニットはそこで扱うWCAG 2.2の達成基準に沿って進み、コードを確かめるライブHTML演習、単語カード、解説つきの練習問題9問か10問があります。
進み具合
このコースの出典 (9)
- W3C, Web Content Accessibility Guidelines (WCAG) 2.2, W3C Recommendation first published 5 October 2023, current edition 12 December 2024 (w3.org/TR/WCAG22/, checked 2026-10-17, rechecked 2026-10-18)
- W3C WAI, What's new in WCAG 2.2 (w3.org/WAI/standards-guidelines/wcag/new-in-22/, checked 2026-10-17)
- W3C WAI, Images tutorial and alt decision tree (w3.org/WAI/tutorials/images/decision-tree/, checked 2026-10-17)
- W3C, Using ARIA (w3.org/TR/using-aria/, Discontinued Draft 24 February 2026, rules 1 to 4, checked 2026-10-17)
- W3C WAI-ARIA Authoring Practices Guide, Read Me First, "No ARIA is better than bad ARIA" (w3.org/WAI/ARIA/apg/practices/read-me-first/, checked 2026-10-17)
- MDN Web Docs, tabindex (developer.mozilla.org/en-US/docs/Web/HTML/Reference/Global_attributes/tabindex, checked 2026-10-17)
- MDN, Heading elements, accessibility notes (developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/Heading_Elements, checked 2026-10-17)
- MDN, autocomplete attribute (developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes/autocomplete, checked 2026-10-17)
- Every code exercise was checked with a Playwright probe against a reference solution.
確認日: 2026-10-17