[Back to 3 Understandable index](index.html)

# 3.2.2 On Input

- Level: A
- Guideline: 3.2 Predictable
- Principle: 3 Understandable

## What it is

Changing the setting of any user interface component does not automatically cause a change of context unless the user has been advised of the behavior before using the component.

## How to test

- Check: Changing the setting of any user interface component does not automatically cause a change of context unless the user has been advised of the behavior before using the component.
- Use the sufficient techniques below as acceptable methods when applicable.
- Confirm none of the common failures apply.

## Sufficient techniques (W3C)

- G80: Providing a submit button to initiate a change of context
- H32: Providing submit buttons
- H84: Using a button with a select element to perform an action
- PDF15: Providing submit buttons with the submit-form action in PDF forms
- G13: Describing what will happen before a change to a form control that causes a change of context to occur is made
- SCR19: Using an onchange event on a select element without causing a change of context

## Advisory techniques (W3C)

- G201: Giving users advanced warning when opening a new window

## Common failures (W3C)

- 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
- 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

## Resources

- WCAG 2.2 SC: https://www.w3.org/TR/WCAG22/#on-input
- Understanding: https://www.w3.org/WAI/WCAG22/Understanding/on-input.html
- Quick reference: https://www.w3.org/WAI/WCAG22/quickref/?versions=2.2#on-input

[Back to 3 Understandable index](index.html)