What Is doctype In Html..?
 

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What Is doctype In Html..?

The declaration is not an HTML tag; it is an instruction to the web browser about what version of HTML the page is written in. In HTML 4.01, the declaration refers to a DTD, because HTML 4.01 was based on SGML. ... HTML5 is not based on SGML, and therefore does not require a reference to a DTD.

A document type defines which version of HTML / XHTML your document uses. You want to use a learning system so that the validators know when you enter your code through validators, which version of HTML / XHTML to check. This page provides a good overview.

A document type declaration, or DOCTYPE, is an instruction that associates a particular SGML with a document type definition or XML document. In the serialized form of the document, it manifests as a short string of markup that conforms to a particular syntax.

The declaration is not an HTML tag; it is an instruction to the web browser about what version of HTML the page is written in. In HTML 4.01, the declaration refers to a DTD, because HTML 4.01 was based on SGML. ... HTML5 is not based on SGML, and therefore does not require a reference to a DTD.

A document type declaration, or DOCTYPE, is an instruction that associates a particular SGML with a document type definition or XML document. In the serialized form of the document, it manifests as a short string of markup that conforms to a particular syntax.

All HTML need to have a DOCTYPE declared. The DOCTYPE is not actually an element or HTML tag. It lets the browser know how the document should be interpreted, by indicating what version or standard of HTML (or other markup language) is being used.