Keyboard navigation testing
All functionality should work using a keyboard. This is essential for all assistive technology to work properly. Most keyboard testing should be checked manually. The best time to test this is during development.
How to keyboard test:
Tab through your pages, links and forms to do the following tests:
- Confirm all links can be reached and activated via keyboard, including any inside drop-downs
- Confirm all links have a strong visible focus indicator
- Confirm all focusable visually hidden content (such as skip links) becomes visible when in focus.
- Confirm all interactions – form fields, buttons, and other controls – can be triggered via keyboard. Any action you can complete with a mouse must also be possible from the keyboard.
- Perform keyboard tests both with a screen reader and without. Screen reader use of the keyboard can override custom keyboard scripting.
WP Accessibility Knowledge Base