Archive for HTML5

HTML5 – Introduction

HTML5 is a new standard for HTML.

The previous version of HTML, HTML 4.01, came in 1999. Now , web has changed a lot since then.

HTML5 is still a work in progress. However, the major browsers support many of the new HTML5 elements and APIs.

HTML5 is a cooperation between the World Wide Web Consortium (W3C) and the Web Hypertext Application Technology Working Group (WHATWG).

WHATWG was working with web forms and applications, and W3C was working with XHTML 2.0. In 2006, they decided to cooperate and create a new version of HTML.

Some rules for HTML5 were established:

  • New features should be based on HTML, CSS, DOM, and JavaScript
  • Reduce the need for external plugins (e.g. Flash)
  • Better error handling
  • More markup to replace scripting
  • HTML5 should be device independent
  • The development process should be visible to the public

In HTML5 there is only one <!doctype> declaration, and it is very simple:

<!DOCTYPE html>

Below is a simple HTML5 document, with the minimum of required tags:

<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
</head>

<body>
The content of the document……
</body>

</html>

Some of the most interesting new features in HTML5:

  • The <canvas> element for 2D drawing
  • The <video> and <audio> elements for media playback
  • Support for local storage
  • New content-specific elements, like <article>, <footer>, <header>, <nav>, <section>
  • New form controls, like calendar, date, time, email, url, search