Guideline 4 (Robust)

Question 1

Success Criterion 4.1.1 Parsing

Answer 1

Level A
In content implemented using markup languages, elements have complete start and end tags, elements are nested according to their specifications, elements do not contain duplicate attributes, and any IDs are unique, except where the specifications allow these features.

Question 2

Success Criterion 4.1.2 Name, Role, Value

Answer 2

Level A
For all user interface components (including but not limited to: form elements, links and components generated by scripts), the name and role can be programmatically determined; states, properties, and values that can be set by the user can be programmatically set; and notification of changes to these items is available to user agents, including assistive technologies.

Question 3

Success Criterion 4.1.3 Status Messages

Answer 3

Level AA
New in 2.1
In content implemented using markup languages, status messages can be programmatically determined through role or properties such that they can be presented to the user by assistive technologies without receiving focus.