Concise version of HTML5 study notes (1): Introduction and syntax of HTML5
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Release： 2017-01-21 16:28:42
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HTML5 Introduction
HTML5 is the next generation of HTML standard specification after HTML4. It provides some new elements and attributes (such as
Syntax
1 Document Media Type
Most of the HTML syntax defined by HTML5 is compatible with HTML4 and XHTML1 , but some are incompatible. Most HTML documents are saved as text/html media type.
HTML5 defines detailed parsing rules (including error handling) for HTML syntax, and users must abide by these rules to save it as text/html media type. The following is an example that conforms to the HTML syntax specification:
Example document
Example paragraph
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HTML5 also defines a text/html-sandboxed media type for HTML syntax so that untrusted content can be hosted.
Other syntax that can be used in HTML5 is XML, which is compatible with XHTML1. If you use XML syntax, you need to save the document as an XML media type, and set the namespace to http://www.w3.org/1999/xhtml according to the XML specification.
The following example document complies with the XML syntax specification in HTML5. It should be noted that the XML document must be saved as an XML media type, such as application/xhtml+xml or application/xml.
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