lang="" vs meta Content-Language

 

This test failed because it relies on :lang for results, but :lang is not supported by this browser.

If the meta Content-Language element contains a language declaration but the html element uses an empty lang value, the UA will not recognize the language declared in the meta Content-Language element.

This test uses :lang to detect whether the language has been set. If :lang is not supported, a message will appear and the test will fail.

Spec text: «Setting the attribute to the empty string indicates that the primary language is unknown.»

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HTML5

the-lang-attribute-010
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