Business rules manual
RGAA v4.1.2
Theme 8: Mandatory elements
Rule 8.3.1

Rule 8.3.1

Summary

We check whether a language is specified for each textual element of the page

Business description

Criterion

8.3

Test

8.3.1

Description

Pour chaque page web, l’indication de langue par défaut vérifie-t-elle une de ces conditions?

  • L’indication de la langue de la page (attribut lang et/ou xml:lang) est donnée pour l’élément html
  • L’indication de la langue de la page (attribut lang et/ou xml:lang) est donnée sur chaque élément de texte ou sur l’un des éléments parents.

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)

Files

Rule 8.2.1Rule 8.4.1