Introduction To Xhtml

Introduction to XHTML

What is XHTML?• Extensible Hypertext Markup Language

• XHTML code:<p>This is a <strong>very</strong> important statement!</p>

• Tags are not displayed but are used to tell the browser “how” to display the text

• In early days HTML was used for displaying only text

The Internet Explained

Origins of the Internet

History of XHTML and the WebHyperlinks = non-linearURL = Uniform Resource Locator

[unique address for web pages]HTTP = HyperText Transfer Protocol

Set of rules for communicating web info

HTML = HyperText Markup LanguageScripting Language for simple creation of web pages

WWW = World Wide WebBrowser = For reading pages written in

HTMLFirst browser was “Netscape Navigator”Can you name any other browsers?

1990Tim Berners-Lee

provides order to the web with so many new technologies being developed

www.w3.org

HTML Competing Browser Developers started introducing their own tags

HTML 4.0.1HTML

CSS

ContentDeprecated Tags (disapproved of)

Style

Dec 1999

1990

XHTML 1.02000 Stricter Rules

Easier to adapt for different purposesEg mobile devices, page reader, language translation

More accurate across different browsersFuture proofing