3.3.6 Error Prevention (All)
Before submitting, all forms must allow reviewing the input, correcting mistakes, or confirming.
3.3.7 Redundant Entry
Don’t ask for the same information twice in the same process. Provide pre-filled fields or selection options if the information was already given.
3.3.8 Accessible Authentication (Minimum)
Authentication must not rely on memory alone. Allow copy-paste, password managers, or other options (like email verification).
3.3.9 Accessible Authentication (Enhanced)
Authentication must not rely on memory or recognition (like solving puzzles, remembering images, or using CAPTCHAs).
4.1.1 Parsing
This used to require HTML with proper structure and no critical markup errors (like missing tags or duplicate IDs). The requirement is removed but still helps with compatibility.
4.1.2 Name, Role, Value
Interactive elements must have a clear name (what it is), the correct role (what it does), and any current value or state, so that assistive technologies can interpret and interact with them correctly.
4.1.3 Status Messages
Status updates (like “form sent” or “5 items in cart”) must be coded using proper roles (like role="status" or role="alert"), be detectable by assistive technologies, and not require moving focus.
