XHTML语法_HTML教程(2)_H5之家 - 中国HTML5教程资源分享第一站

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XHTML语法_HTML教程(2)

字号+ 作者：H5之家来源：H5之家 2015-09-19 17:57 我要评论( )

Note: The xmlns attribute inside the html tag is required in XHTML. However, the validator on w3.org does not complain when this attribute is missing in an XHTML document. This is because xmlns=http:

Note: The xmlns attribute inside the <html> tag is required in XHTML. However, the validator on w3.org does not complain when this attribute is missing in an XHTML document. This is because "xmlns=http://www.w3.org/1999/xhtml" is a fixed value and will be added to the <html> tag even if you do not include it.
注意：XHTML文档要求xmlns属性出现在html标签中。然而，w3.org的校验器不会由于这个属性没有出现在你的XHTML文档中而报告错误。这是因为"xmlns=http://www.w3.org/1999/xhtml"是一个固定的值，即使你的文档里没有包含它，它也会自动加上的。

You will learn more about the XHTML document type definition in the next chapter