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Tab order must follow a logical sequence that matches visual layout.
Why it matters: Illogical tab order confuses keyboard users and disrupts workflow.
If a Web page can be navigated sequentially and the navigation sequences affect meaning or operation, focusable components receive focus in an order that preserves meaning and operability.
What This Means: This success criterion requires that when users navigate through a page sequentially (using Tab key), the focus order must follow a logical sequence that preserves the meaning and operability of the content. The focus order should match the visual layout and reading order, ensuring that users encounter content in a way that makes sense.
Why It's Important: Keyboard users navigate by moving focus from one element to the next. If the focus order doesn't match the visual layout or logical reading order, users become confused and may miss important content or functionality. For example, if a form's submit button receives focus before the form fields, users cannot complete the form logically.
Ensure the DOM order matches the visual order. Use semantic HTML structure to create logical focus order. Avoid using tabindex values greater than 0 (which can disrupt natural focus order). Only use tabindex='-1' to remove elements from focus order when necessary. Test by tabbing through the entire page and verifying the order makes sense.
This criterion ensures that keyboard users can access and understand the content, improving their overall experience and ability to use the website effectively.
This criterion ensures that blind users can access and understand the content, improving their overall experience and ability to use the website effectively.
This criterion ensures that users with cognitive disabilities can access and understand the content, improving their overall experience and ability to use the website effectively.
Impact: When this criterion is properly implemented, it removes barriers for these user groups and creates a more inclusive web experience for everyone.
This success criterion benefits the following user groups:
Tip: Use this checklist during development and testing to ensure all requirements for 2.4.3 Focus Order are met. Check off items as you complete them.
Note: These are official W3C resources for 2.4.3. For the most up-to-date information and detailed technical guidance, always refer to the official W3C documentation.
Implementing 2.4.3 Focus Order correctly requires understanding your specific context. Code solutions vary significantly based on multiple factors:
HTML, React, Vue, Angular, PHP, Python, and other frameworks each have different patterns and best practices.
Server-side rendering, client-side rendering, static generation, and hybrid approaches require different solutions.
Your existing components, styling approach, and UI library influence how accessibility must be implemented.
Your specific user base, content type, and interaction patterns determine the most appropriate implementation.
We provide tailored implementation guidance by analyzing your specific technology stack, coding patterns, design system, and project requirements. Our team reviews your codebase and provides custom solutions that integrate seamlessly with your existing architecture.
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