Retrieving compound pages

This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

Skills: none

IT concepts: multi-object pages

Where does this topic fit?

• Internet concepts– Applications– Technology– Implications

• Internet skills– Application development– Content creation

1. Establish a temporary connection between the client and server (dotted line)

2. Client sends the request to the server3. The server returns the requested page or an error message4. The client displays whatever the server returns5. Disconnect

Client Server

request

page

Retrieving a simple Web page

www.ford.com is an initial page plus 74 objects

Embedded objects like

Images

Videos

JavaScript programs

. . .

List of objects on www.ford.com

http://www.pingdom.com

JavaScript program that is included on the pageImage from

the Creative Commons server

Page from a server at CSUDH

The status bar changes as the objects load

Browswers may be extended

• Browsers have the ability to display objects like common image formats

• Browsers have the ability to execute JavaScript programs

• You must install an extension for some objects – for example a Flash video

What if a required extension is not installed?

click todownload

In this case, Apple says “no”

But, it is generally not a problem

Next generation (HTML 5) browsers will have built in capability for video, audio streaming, and interactive graphics.

Retrieving compound pages

This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

Skills: none

IT concepts: multi-object pages