Technique F47:Failure of Success Criterion 2.2.2 due to using the blink element

Applicability

HTML and XHTML

This technique relates to 2.2.2: Pause, Stop, Hide (Failure).

Description

The blink element, while not part of the official HTML or XHTML specification, is supported by many user agents. It causes any text inside the element to blink at a predetermined rate. This cannot be interrupted by the user, nor can it be disabled as a preference. The blinking continues as long as the page is displayed. Therefore, content that uses blink fails the Success Criterion because blinking can continue for more than three seconds.

Examples

Example 1

A product list page uses the blink element to draw attention to sale prices. This fails the Success Criterion because users cannot control the blink.

<p>My Great Product <blink>Sale! $44,995!</blink></p>

Other sources

No endorsement implied.

Tests

Procedure

  1. Examine code for the presence of the blink element.

Expected Results

  • If #1 is true, the content fails the Success Criterion.