Level ASince WCAG 2.0
3.2.2 On Input
Guideline 3.2: Predictable – Pages behave the way people expect.
What does the rule require?
Selecting or typing something does not automatically cause anything unexpected – unless people were told beforehand.
How to get it right
Do not let a select list change the page right away. Put a “Show” button next to it.
Who benefits most?
- Blind people
- People with cognitive disabilities
Official wording
This page explains the rule in simple words. Only the original W3C text is normative.
- “Understanding On Input” at W3C (external site)
- Techniques in the WCAG Quick Reference (external site)