what is HTML

What is HTML?

HTML is a markup language for describing web documents (web pages).

  • HTML stands for Hyper Text Markup Language
  • A markup language is a set of markup tags
  • HTML documents are described by HTML tags
  • Each HTML tag describes different document content

HTML Sample

A small HTML document:

<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body><h1>My First Heading</h1>
<p>My first paragraph.</p></body>
</html>

Sample Explained

  • The DOCTYPE declaration defines the document type to be HTML
  • The text between <html> and </html> describes an HTML document
  • The text between <head> and </head> provides information about the document
  • The text between <title> and </title> provides a title for the document
  • The text between <body> and </body> describes the visible page content
  • The text between <h1> and </h1> describes a heading
  • The text between <p> and </p> describes a paragraph

Using this description, a web browser can display a document with a heading and a paragraph.

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Web Browsers

All the HTML files are viewed in web browsers like Google Chrome, IE, Firefox, Safari. Browsers only display the content in between the HTML tags.


Common Declarations

HTML5

<!DOCTYPE html> – It describes the type of document.

HTML 4.01

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

XHTML 1.0

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

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