Hypertext Markup language 5 (HTML 5)

**marco1** · 08-04-2009 11:29 AM

What's new and the different from HTML 4/XHTML 1.x :

New parsing rules oriented towards flexible parsing and compatibility
New elements – section, article, footer, audio, video, progress, nav, meter, time, aside, canvas, datagrid
New types of form controls – dates and times, email, url, search
New attributes – ping (on a and area), charset (on meta), async (on script), data-x (where x is a user supplied custom attribute name.)
Global attributes (that can be applied for every element) – id, tabindex, hidden
Deprecated elements dropped – center, font, strike

Syntax :

HTML 5 defines an HTML syntax that is compatible with HTML 4 and XHTML 1 documents published on the Web, but is not compatible with the more esoteric SGML features of HTML 4, such as the NET syntax (i.e. <em/content/). Documents using the HTML syntax must be served with the text/html media type.
HTML 5 also defines detailed parsing rules (including "error handling") for this syntax which are largely compatible with popular implementations. User agents must use these rules for resources that have the text/html media type. Here is an example document that conforms to the HTML syntax:

HTML Code:

<!doctype html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Example document</title>
  </head>
  <body>
    <p>Example paragraph</p>
  </body>
</html>

The other syntax that can be used for HTML 5 is XML. This syntax is compatible with XHTML 1 documents and implementations. Documents using this syntax need to be served with an XML media type and elements need to be put in the XHTML namespace namespace following the rules set forth by the XML specifications. [XML]
Below is an example document that conforms to the XML syntax of HTML 5. Note that XML documents must have an XML media type such as application/xhtml+xml or application/xml.

Code:

<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <title>Example document</title>
  </head>
  <body>
    <p>Example paragraph</p>
  </body>
</html>

Browsers Support :

Mozilla Firefox 3.5 is so far (August 2009) the only non-experimental browser to support Ogg formats. Such support is planned for Google Chrome, and has been available in experimental builds of Opera since 2007.
Opera Software and Mozilla have been advocates for including the Ogg formats into the HTML standard.

All our sites have errors :
All of our sites have HTML 5 errors and we should start design our style more "professionally" with HTML 5

Learn More :
HTML 5
HTML 5
HTML5 differences from HTML4
Comparison of layout engines (HTML 5) - Wikipedia, the free encyclopedia

**Brian Cummiskey** · 08-04-2009 11:39 AM

Unfortunately, ie 5, 5.5, 6, and maybe even 7 aren't going to work well with html5 if served in the application mime. It's a better dtd to use, too. Hopefully, ie8 will catch on soon. Ie7 is still the #1 ie client on my sites.

**marco1** · 08-04-2009 11:43 AM

Yes And I Hope that's will be the end life of ie.6 and ie.7

Hypertext Markup language 5 (HTML 5)

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