Kilotest: Rules belonging to ID not unique issue

About the ID not unique issue

• Why it matters: User may be pointed to the wrong item
• Priority: highest
• Related WCAG standard: 4.1.1

Rules

Alfa rules

invariant rules

• r3: Element id attribute value is not unique

ASLint rules

invariant rules

• duplicated_id_attribute: Element id attribute value is not unique

Axe rules

invariant rules

• duplicate-id: id attribute value is not unique
• duplicate-id-active: id attribute value of the active element is not unique
• duplicate-id-aria: id attribute used in ARIA or in a label has a value that is not unique

HTML CodeSniffer rules

invariant rules

• E-AAA.4_1_1.F77: Duplicate id attribute value
• E-WCAG2AAA.Principle4.Guideline4_1.4_1_1.F77: Duplicate id attribute value

Accessibility Checker rules

invariant rules

• element_id_unique: Element has an id attribute value that is already in use

Html Checker API rules

variable rules

• Duplicate ID .+$|^The first occurrence of ID .* was here.*: Duplicate id

Html Checker rules

variable rules

• Duplicate ID .+$|^The first occurrence of ID .* was here.*: Duplicate id

QualWeb rules

invariant rules

• QW-ACT-R18: id attribute value is not unique
• QW-BP30: id attribute value is shared with another element