Transcript Chapter 24 - Advanced Web Technologies

Chapter 24 - Advanced Web Technologies
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Introduction
Conventional Web Pages Are Static
How A Server Stores Static Web pages
Fetching Items One At A Time
Conventional Web Pages Use The Entire Screen
A Web Page Can Change Part Of The Screen
The Web, Advertising, And Frames
Static Documents Have Disadvantages
Chapter 24 - Advanced Web Technologies
• Controlling How A Browser Processes Data
– A Web page can contain stored audio. When the user
selects an item that corresponds to an audio clip, the
user's browser plays the audio through the speakers or
earphones attached to the computer.
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Plugins Allow Variety
A Server Can Compute A Web Page On Demand
How CGI Works
Professional Programmers Build CGI Programs
Chapter 24 - Advanced Web Technologies
• Personalized Web Pages
– Dynamic content technologies such as CGI allow a
server to personalize pages by choosing items to
display and the order in which to display them.
Although it helps focus on items that interest a
particular user, personalized content can make pages
irreproducible
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Personalized Advertisements
Web Pages Can Interact
Shopping Carts
Cookies
Chapter 24 - Advanced Web Technologies
• Should You Accept Cookies?
– A cookie is a value that a browser and server exchange
to identify you. Accepting cookies allows servers to
tailor content and advertising to your tastes; rejecting
cookies enforces anonymity.
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A Web Page Can Display Simple Animations
Active Documents Are More Powerful
Java Is An Active Document Technology
JavaScript Is An Active Document Technology
[JavaScript and Java are NOT the same]
• The Importance Of Advanced Web Technologies
Chapter 24 - Advanced Web Technologies
• Terms
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CGI technology
form technology
frame technology
plugin
Java
JavaScript
Cascading Style Sheets
Dynamic HTML
Active Server Pages (asps)
XML