A2JC4life Posted March 19, 2010 Report Posted March 19, 2010 Can anyone tell me what this means? Missing xmlns attribute for element html. The value should be: http://www.w3.org/1999/xhtml <html> ✉ Many Document Types based on XML need a mandatory xmlns attribute on the root element. For example, the root element for XHTML might look like: <html xmlns="http://www.w3.org/1999/xhtml"> I get this error when attempting to validate my WordPress theme. If I add the attribute it specifies, I get a different error, about the xmlns not existing or something. What do I need to do?
Andrea Posted March 19, 2010 Report Posted March 19, 2010 Make sure your doctype and opening html tag look like this: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
Guest iOCreations Posted June 16, 2010 Report Posted June 16, 2010 Can anyone tell me what this means? Missing xmlns attribute for element html. The value should be: http://www.w3.org/1999/xhtml <html> ✉ Many Document Types based on XML need a mandatory xmlns attribute on the root element. For example, the root element for XHTML might look like: <html xmlns="http://www.w3.org/1999/xhtml"> I get this error when attempting to validate my WordPress theme. If I add the attribute it specifies, I get a different error, about the xmlns not existing or something. What do I need to do? Just a small note to understand why that is needed, The DOCTYPE element is nedded to define the document type definition for the specific page. It is required if your page needs to be be XHTML compliant and validated from W3C standards. Unfourtantely, there are quite a large number of websites on the net which are not w3c validated, and this can couse a lot of issues when viewing websites on different browsers. Always try to validate websites before going online. Jonathan Caruana
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