Summary of the differences between Html, sHtml and XHtml

Summary of the differences between Html, sHtml and XHtml
For example: <u> This has no ending character and the browser recognizes it

Shtml is based on Server Side Include (SSI). When there is a server-side executable script, it is treated as a dynamic programming language and can be included. When there is no server-side script, it is no different from HTML.

XHTML is based on the W3C standard and follows the strict XML format. It can be considered a transition from HTML to XML, and the syntax format is strictly required.

xhtml<p> must have a </p> end character (all elements must be closed)

xhtml<p><strong></strong></p> (correct nesting)

XHTML attributes should be enclosed in double quotes

Xhtml is case-sensitive, and the attributes and values ​​of tags are all lowercase.

Xhtml uses id instead of name attribute

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