Internet, WWW, HTML

Dreamweaver In this lesson:

Internet, WWW a HTML
HTML - HyperText Markup Language
Web page look on the Internet
Browsers
The very first web page

Internet, WWW a HTML

Když se vám v noci zdají sny v HTML, pak jste závislí na Internetu.

Internet

Group of computers (computer networks) which are connected worldwide.

Visualisation of the part of the Internet from year 2005. (Author: Matt Britt)

WWW (World Wide Web)

One of the Internet services. Continuously changing set of hypertext documents (webpages) accessible via Internet. Caution - it is not the same as Internet!

Picture illustrates WWW neigbourhood of google.cz - generated with http://www.touchgraph.com/TGGoogleBrowser.html

HTML (Hypertext Markup Language)

Language for creating WWW documents.

HTML

Markup language for creating HTML documents, which has two main attributes:

Hypertext – connection from one webpage to another.
Universality – documents in HTML language are written as plaintext so any webpage is readable for random computer -> web is opened to everyone.

Example of HTML code


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

  <html>

  <!-- This is a comment -->

  <head>

  <title>Page title</title>

  </head>


  <!-- document body -->

  <body>

  <h1>Document headline</h1>

  <p>This is document body</p>

  </body>

  </html>

Webpage look on the Internet

Generally each computer can display web page. The look of web page is determined by many factors:

Computer (PC, PDA, Palm, PocketPC, cell phone,...)
Browser – application (software) for displaying web pages
Monitor resolution (displaying device) and it's parameters
Internet connection speed
...

Browsers

Firefox (http://www.firefox.cz)
Google Chrome (http://www.google.com/chrome)
Internet Explorer (IE) – Microsoft (http://www.microsoft.com/cze/windows/products/winfamily/ie/default.mspx)
Opera (http://www.opera.com)
Safari (primary for Apple) http://www.apple.com/safari)
...

The very first webpage (1991)

http://www.w3.org/History/19921103-hypertext/hypertext/WWW/TheProject.html

první WWW stránka

Epilog

Son: "Father, is it true that Internet is degenerating people?"
Father: "IMHO LOL."

Questions

What is Internet?
What is WWW?
What is HTML?
Name two main attributes of the HTML?
What influences the look of webpage on the Internet?
Name at least two contemporary web browsers.

webdesign, xhtml, css, php - Mgr. Michal Mikláš