Rule 6.3.3
Summary
This test consists in checking whether the text of each clickable area is enough explicit to understand the purpose and the target out of its context.
Business description
Criterion
Test
Description
Chaque intitulé de lien de type zone cliquable (contenu de l'attribut alt d'une balise area) est-il explicite hors contexte (hors cas particuliers) ?
Level
AAA
Technical description
Scope
page
Decision level
Semi-Decidable
Algorithm
Selection
Set1
All the <area> tags with a "href" attribute and a "alt" attribute (area[href][alt] )
Set2
All the elements of Set1 with a not empty "alt" attribute
Process
Test1
For each element of Set2, we check whether the link content doesn't belong to the text link blacklist.
For each element returning false in Test1, raise a MessageA, raise a MessageB instead
Test2
For each element of Set2, we check whether the link content doesn't only contain non alphanumeric characters
For each element returning false in Test2, raise a MessageA, raise a MessageB instead
MessageA : Unexplicit Link
- code : UnexplicitLink
- status: Failed
- parameter : link text,
"title"attribute, snippet - present in source : yes
MessageB : Check link without context pertinence
- code : CheckLinkWithoutContextPertinence
- status: Need More Info
- parameter : link text,
"title"attribute, snippet - present in source : yes
Analysis
Not Applicable
The page has no clickable area (Set1 is empty)
Failed
At least one clickable area has an "alt" attribute content which is blacklisted or that only contains non alphanumerical characters (Test1 OR Test2 returns false for at least one element)
Pre-Qualified
In all other cases