Skip to main content

no-duplicate-sibling-attr

Warns when an attribute the content model marks as sibling-unique (uniqueAttrs) appears on more than one element of the same type within the same parent, according to the HTML Living Standard. It has settings in @markuplint/html-spec.

❌ Examples of incorrect code for this rule

<video>
  <track default src="a.vtt" />
  <track default src="b.vtt" />
</video>

✅ Examples of correct code for this rule

<video>
  <track default src="a.vtt" />
  <track src="b.vtt" />
</video>

Interface​

{
  "no-duplicate-sibling-attr": boolean
}

Default Severity​

error