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# 2.2.4 Interruptions

- Level: AAA
- Guideline: 2.2 Enough Time
- Principle: 2 Operable

## What it is

Interruptions can be postponed or suppressed by the user, except interruptions involving an emergency.

## How to test

- Check: Interruptions can be postponed or suppressed by the user, except interruptions involving an emergency.
- Use the sufficient techniques below as acceptable methods when applicable.
- Confirm none of the common failures apply.

## Sufficient techniques (W3C)

- G75: Providing a mechanism to postpone any updating of content
- G76: Providing a mechanism to request an update of the content instead of updating automatically
- SCR14: Using scripts to make nonessential alerts optional

## Common failures (W3C)

- F40: Failure due to using meta redirect with a time limit
- F41: Failure of Success Criterion 2.2.1, 2.2.4, and 3.2.5 due to using meta refresh to reload the page

## Resources

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

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