RGAA 3.0 - Rule 8.3.1
Summary
We check whether a language is specified for each textual element of the page
Business description
Criterion
Test
Description
For each Web page, does the default human language identification meet one of the following conditions? The human language identification (lang and/or xml:lang attribute) for the page is provided via the HTML element
Level
A
Technical description
Scope
Page
Decision level
Decidable
Algorithm
Selection
Set1
The <html> tag with a "lang" or "xml:lang" attribute.
Set2
The tags with a "lang" or "xml:lang" attribute.
Set3
The textual tags without "lang" or "xml:lang" attribute considering that
these attributes can be set to the current tag or to one of its
ascendants.
Process
Test1
Test whether Set2 is empty. If yes, raise a MessageA
Test2
Test whether Set1 is empty and Set2 and Set3 are not. If yes, raise a MessageB
MessageA : Lang Attribute Missing On Whole Page
- code : LangAttributeMissingOnWholePage
- status: Failed
- parameter : none
- present in source : no
MessageB : Lang Attribute Missing On Html
- code : LangAttributeMissingOnHtml
- status: Failed
- parameter : none
- present in source : no
Analysis
Passed
- The
<html>tag has a"lang"or a"xml:lang"attribute (Set1 is not empty) - The language is provided for each textual element by the tag or by one of its parents (Set1 is empty AND Set2 is not empty AND Set3 is empty)
Failed
- The page has no language specification (Set2 is empty).
- Some textual tags are missing the language attribute (Set1 is empty AND Set2 is not empty AND Set3 is not empty)