Well-formedness error: duplicate attributes, first one empty

An XHTML file that is not well-formed because there is an img element that has two alt attributes instead of one. The first alt attribute is empty; the second contains text alternative. It is not clear if the first or the last attribute will take precedence in user agents and assistive technologies. If the first takes precedence, the screen reader will ignore the image; if the second takes precedence, the screen reader may read the text alternative. Well-formedness error: duplicate attributes, first one empty Christophe.Strobbe@esat.kuleuven.be en Copyright BenToWeb 2005-2007 2005-10-05 validated XHTML™ 1.0 The Extensible HyperText Markup Language (Second Edition) Strictly Conforming Documents

This test case is intended to pass because elements have complete start and end tags that are nested according to specifications (even if one element has duplicate attributes).

experts

Does the image have a description?

Heeft het plaatje een beschrijving?

Nothing; the image has no text alternative. Niets; het plaatje heeft geen beschrijving. 1 The Find dialogue box of Notepad++. De Zoeken dialoog van Notepad++. 2 I don't know. Ik weet het niet. -1 blindness low vision

The document is not well-formed: the image has two alt attributes; the user may not get the correct alternative text.

XML 1.0, Third Edition: An attribute name MUST NOT appear more than once in the same start-tag or empty-element tag.

If the image cannot be loaded, Internet Explorer 6.0, Firefox 2.0, SeaMonkey 1.1 and Opera 9.0 (all tested on Windows XP) don't display alt text, which probably means that the second alt attribute is ignored by these browsers.

This test case does not map to a WCAG 2.0 technique or failure.

(The error in the test file is not covered by failure F70: Failure of SC 4.1.1 due to incorrect use of start and end tags or attribute markup.)

The document is not well-formed: the image has two alt attributes; the user may not get the correct alternative text.

XML 1.0, Third Edition: An attribute name MUST NOT appear more than once in the same start-tag or empty-element tag.

Online version: sc4.1.1_l1_007.

The document is not well-formed: the image has two alt attributes; the use may not get the correct alternative text.

XML 1.0, Third Edition: An attribute name MUST NOT appear more than once in the same start-tag or empty-element tag.