Level A
All functionality of the content is operable through a keyboard interface without requiring specific timings for individual keystrokes, except where the underlying function requires input that depends on the path of the user’s movement and not just the endpoints.>
Explanation
It must be possible to do everything without a mouse that a mouse user can do. This makes sure that people who use keyboards or speech recognition tools can navigate content and complete tasks successfully.
Responsibilities
- Design
- Development
- QA
Requirements
- All interaction and functionality is usable with a keyboard;
- All interaction and functionality is usable on a touch-screen device;
- All interaction and functionality is usable with speech recognition tools.
Common mistakes
- A custom widget has been created, but the necessary keyboard support has not been provided;
- An
<a>element has been used as the basis for a button, but the additional keyboard interaction (activation with the space key) has not been provided; - A dialogue opens but cannot be dismissed by touch, because it does not have a close button;
- The tabindex attribute has been used with a value of “-1” to mistakenly remove it from the tab order.