WCAG version: 2.1
Collection of success criterion published in WCAG version 2.1 in 2018. Notably adds mobile, low vision, and cognitive updates.
3.3.2 Labels or Instructions
Provide enough help to prevent form errors—sometimes the label is enough, but hint text or instructions might also be needed.
3.3.3 Error Suggestion
Helpful suggestions should be provided to help users correct their errors.
3.3.4 Error Prevention (Legal, Financial, Data)
Important forms like a legal agreement or submitting financial information offer the opportunity to check the information entered before sending.
3.3.5 Help
Where a label can’t provide enough information to understand what’s being asked, there’s hint text or some other kind of explanation alongside.
3.3.6 Error Prevention (All)
After entering any information, the user is offered the opportunity to check it before sending.
4.1.1 Parsing
The markup has been validated and there are no errors, such as duplicate ids, missing tags, and invalid child elements.
4.1.2 Name, Role, Value
The semantic meaning of every interactive element (form controls, links, headings, landmarks, tables, and so on) is correct, and each has an accessible name.
4.1.3 Status Messages
Messages like form errors and success pop-ups are communicated to assistive technology like screen readers.
