Bug 16125 - Validation of image(s) that form(s) a link or button
Summary: Validation of image(s) that form(s) a link or button
Status: NEW
Alias: None
Product: HTML Checker
Classification: Unclassified
Component: General (show other bugs)
Version: unspecified
Hardware: PC All
: P2 normal
Target Milestone: ---
Assignee: Michael[tm] Smith
QA Contact: qa-dev tracking
URL: http://dev.w3.org/html5/spec/the-img-...
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-02-26 20:29 UTC by Leif Halvard Silli
Modified: 2012-02-26 21:50 UTC (History)
1 user (show)

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Description Leif Halvard Silli 2012-02-26 20:29:33 UTC
Spec says:

]] When an a element that creates a hyperlink, or a button element, has
no textual content but contains one or more images, the alt attributes
must contain text that together convey the purpose of the link or
button.[[

Therefore one would expect that the following examples would trigger errors:

  <a href=foo ><img src=bar alt=''" ></a>
  <a href=foo ><object data=bar type="image/gif"></object></a>
  <button type=button ><img src=bar alt="" ></button>
  <button type=button ><object data=bar type="image/gif" ></object></button>
   
But currently, as the validator considers the above examples as valid. Please fix.

See message to public-html/public-html-a11y:  
http://lists.w3.org/Archives/Public/public-html/2012Feb/0407