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Invalid language attribute Web Standard

Description

Bad value for attribute lang.

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A BCP 47 lang attribute consists of hyphen-separated subtags. The first subtag identifies a natural language by its ISO 639 language code (e.g. en for English) and may be followed by additional subtags. The most common additional subtag is a two-letter ISO 3166 country code (e.g. GB for the United Kingdom to form en-GB). IANA maintains a registry of allowed subtags. A empty lang attribute is allowed (and means unknown language) but a lang containing only spaces is not allowed and causes a random language to be selected in a screen reader.

Applicable standards

Change history

  • 5.1 Jan 2013 Added.

This page describes a web site issue detected in HTML documents by SortSite Desktop and OnDemand Suite.

Rule ID: W3cHtml5Error-RnvErAval-lang