Doctype HTML

On the HTML document you have often seen that there is a <!DOCTYPE html> declaration before the <html> tag. This <!DOCTYPE html> declaration is not an HTML tag. It is used to instruct the web browser about the HTML page.

Actually, there are many type of HTML e.g. HTML 4.01 Strict, HTML 4.01 Transitional, HTML 4.01 Frameset, XHTML 1.0 Strict, XHTML 1.0 Transitional, XHTML 1.0 Frameset, XHTML 1.1 etc.

The <!DOCTYPE> declaration refers Document Type Declaration (DTD) in HTML 4.01; because HTML 4.01 was based on SGML. But HTML 5 is not SGML based language.

DTD defines the rules for the markup languages so that the browsers recognize the content correctly.

The doctype declaration differs between HTML versions. The HTML 5 doctype declaration is given below.

<!DOCTYPE html>

Let's see an example of HTML document with doctype declaration.

<!DOCTYPE html>  
<html>  
<head>  
<title>This is the title</title>  
</head>  
<body>  
This is the content of the document.  
</body>  
</html>  

Saturday, 19 September 2015

Doctype HTML

Doctype HTML

DTD defines the rules for the markup languages so that the browsers recognize the content correctly.

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