Week 10 - Trees , the DOM and AJAX

This week we will look at another key data structure, the tree . Tree structures are found in many places in computing, incuding filesystems and the structure of documents. We will look at some general aspects of trees and then look at how one tree, the DOM (Document Object Model) in a browser, can be accessed and updated using Javascript. The example we look at also uses a different client-server communication model called AJAX.

• [Essential] slides
• mp3 recording of lecture - unedited as yet
  
• [Essential] tutorial - non-technical - investigating some AJAX-powered applications and the use of tree structures
  
• [Essential] ZIPcode example
  
• Ajax on CEMS wiki
  
• W3CSchools DOM Tutorial
  
• W3C DOM level 1 Documentation
• [Essential] Introduction