Retrieving compound pages This work is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 License. Skills: none IT concepts:

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Retrieving compound pages

Presentation transcript:

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 server 3.The server returns the requested page or an error message 4.The client displays whatever the server returns 5.Disconnect Client Server request page Retrieving a simple Web page

is an initial page plus 74 objects

Embedded objects like Images Videos JavaScript programs

... List of objects on

JavaScript program that is included on the page Image 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 to download

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