Re: XHTML: there is no attribute "data-... from David Dorward on 2017-02-02 (www-validator@w3.org from February 2017)

From: David Dorward <david@dorward.me.uk>
Date: Thu, 02 Feb 2017 13:48:28 +0000
To: John <W3validator-posting@Wankel.ws>
Cc: www-validator@w3.org
Message-ID: <74C38430-7C57-459D-8588-2DD6C9CDDFBE@dorward.me.uk>

On 1 Feb 2017, at 21:28, John wrote:

> While validating an XHTML Transitional page I get 2 errors:
>    there is no attribute "data-...

`data-*` attributes were introduced in HTML 5. While there is an XML 
serialisation of HTML 5, there is no “Transitional” variant. The 
only Transitional DTDs are HTML 4.01 Transitional and XHTML 1.0 
Transitional (they were designed to help people transition from HTML 3.2 
presentational elements to CSS in the late 90s).

Received on Thursday, 2 February 2017 13:49:04 UTC