Lang Of Parts

Accessibility rule handbook metadata

Rule: DET.A11Y.GENERIC.LANG_OF_PARTS · lane deterministic · scope generic
Page status: current
page_version: d28a3767a353c2928fd98e619839f9fbe635095adabf17c0f0da3aa678011480
generated_at: 2026-05-28T05:09:12.000Z
registry_fingerprint: b3797010c3ca988bb0d21d5e85d4efece0b9e83f311c2d4981ebbf402df7a7c2

Related WCAG success criteria

Indicative mapping for compliance reporting — not a conformance claim. Criteria: 3.1.2

Deterministic lane — scope generic. Detected by det-a11y-generic-*.check.js or the axe lane for WCAG-tagged violations.

Harness: auditor-tests/invoke-a11y-ruleset-harness.sh on the Before fixture.
Audit: analyze-website-a11y.mjs --only-deterministic-rule-ids DET.A11Y.GENERIC.LANG_OF_PARTS

Module: docs/design/a11y-audit/deterministic-a11y-rules.md#det-a11y-generic-lang-of-parts. See Before / After below.

Deterministic accessibility check (generic scope).

DOM and/or repo signals satisfy the rule implementation in tools/website-a11y-auditor.
For axe-backed WCAG criteria, use --lanes axe,det with an appropriate --standard preset.

Auditor emits a finding with ruleId DET.A11Y.GENERIC.LANG_OF_PARTS on the crawled URL.
Harness: auditor-tests/invoke-a11y-ruleset-harness.sh DET.A11Y.GENERIC.LANG_OF_PARTS expects ≥1 finding on the Before fixture.

Before (failing example)

Language of page or part is not declared.

Rule: DET.A11Y.GENERIC.LANG_OF_PARTS · scope: generic

After (passing example)

lang (and hreflang where needed) is set correctly.

Deterministic accessibility check (generic scope).

Reproduce with analyze-website-a11y.mjs --only-deterministic-rule-ids DET.A11Y.GENERIC.LANG_OF_PARTS when lane is deterministic.
Apply the After markup pattern (or fix generator source for KS rules).
Re-run harness or audit until the rule is clean on the target URL.