2.2.4 Interruptions Level AAA

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

[View on W3C.org]

Testing & Remediation

How to test:
  1. Find pages with content that automatically updates.
  2. For each automatic update, look for a mechanism to adjust the timing of the updates.
  3. Check that automatic updating is disabled by default or that the user is warned before an automatic update occurs and allowed to suppress it.
How to remediate: Generally this can success criterion can be satisfied with using Javascript to make nonessential alerts optional. Please see W3C's SCR14 technique for details on how to perform this remediation.

Questions and Answers