Understandable / 3.2 Predictable
3.2.2On Input
Level ASimply checking a box, typing into a field, or picking an option from a select box must not by itself trigger an unexpected change of context such as navigation or auto-submission. If such a change is going to happen, the user must be told about it in advance, before they interact with the control.
Specification updated
- Enhancement#5107(opens in a new tab)3.2.2: Clarify button types in scope in Understanding
Note
A detailed commentary for this success criterion is not yet available. In the meantime, this page lists related patterns, techniques, and links to the normative sources.
Related Techniques
Specific implementation techniques for meeting this success criterion. This site doesn't include the full text, so follow the links to the original W3C documents.
Sufficient Techniques(6)
- G13: Describing what will happen before a change to a form control that causes a change of context to occur is made(opens in a new tab)waic.jp(opens in a new tab)
- G80: Providing a submit button to initiate a change of context(opens in a new tab)waic.jp(opens in a new tab)
- H32: Providing submit buttons(opens in a new tab)waic.jp(opens in a new tab)
- H84: Using a button with a select element to perform an action(opens in a new tab)waic.jp(opens in a new tab)
- PDF15: Providing submit buttons with the submit-form action in PDF forms(opens in a new tab)waic.jp(opens in a new tab)
- SCR19: Using an onchange event on a select element without causing a change of context(opens in a new tab)waic.jp(opens in a new tab)
Advisory Techniques(1)
Failures(2)
- F36: Failure of Success Criterion 3.2.2 due to automatically submitting a form and presenting new content without prior warning when the last field in the form is given a value(opens in a new tab)waic.jp(opens in a new tab)
- F37: Failure of Success Criterion 3.2.2 due to launching a new window without prior warning when the selection of a radio button, check box or select list is changed(opens in a new tab)waic.jp(opens in a new tab)
Normative References
- Success Criterion 3.2.2 On Input — WCAG 2.2(opens in a new tab)The normative requirement text.
- Understanding On Input — W3C(opens in a new tab)Official guidance on intent, examples, and techniques.