HTML tutorial - DOCTYPE declaration

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 The first line of html coding is to specify the document type. Document type is declared by the keyword 

<! DOCTYPE               >

A sample program is given below.

<!DOCTYPE html>

<html>

<head> 

<title>

This is the first HTML program </title>

</head>

<body>

This is the sample content </body>

</html>

save this file as "sample.html" in notepad. Open the file in any browser like google chrome, Internet explorer/edge, firefox, safari and opera browser.

It shows the webpage as a window with the text "This is the sample content".

Alternate versions:

when you are using other versions of HTML or XHTML, it has some different syntax to follow....

First, the syntax of html 4.01 version is given below..

 Syntax:

<!DOCTYPE html PUBLIC  "-//W3C//DTD HTML 4.01 transitional//EN" 

                     "URL of DTD file">

Next,the syntax of XHTML is as follows....

Syntax:

<!DOCTYPE html PUBLIC  "-//W3C//DTD XHTML 1.1//EN" 

                     "URL of DTD file">

Note: 

 The "DOCTYPE" keyword is not case sensitive as all other html tags. you can use "DocType", "DOCtype", "Doctype", "doctype" instead of  "DOCTYPE".

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