Dialog と Popover #12
Read Originalこの記事は、HTMLのPopover APIを使用してToast通知を実装する際に一般的なsetTimeoutによる自動非表示機能が、WCAG（Web Content Accessibility Guidelines）の基準に違反する可能性について詳しく考察しています。WHATWGのGitHub議論を引用し、時間制限のあるUIがアクセシビリティ問題を引き起こす理由と、代替実装方法について技術的に議論しています。
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