Principle 3 Understandable · Guideline 3.2: Predictable
3.2.2 On Input
Changing a setting must not automatically change context.
What this means in practice
Forms that submit as soon as an option is picked take users by surprise. Provide a button – or warn clearly beforehand.
Normative wording
The binding text lives at the W3C. What you read here is our own faithful rendering – not a quotation.