The current library might be improved in a number of ways.These will be left as an exercise for the reader, though in many cases the techniques have been covered else where in the book.
User feedback, for example, has not been addressed; we previously discussed how the display of suitable text or a graphic image can alert the user that a request is currently in progress. It would be useful to revise the library to include the techniques.
Error handling, too, has been excluded from the code and would prove a useful addition. For example, it should not be too difficult to modify the library to detect XMLHTTPRequest status properties other than 200 and output a suitable error message to the user. Feel free to experiment with the code and see what you can achieve.
AJAX Related Interview Questions
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Anatomy Of A Website
Writing Web Pages In Html
Sending Requests Using Http
Server-side Programming In Php
A Brief Introduction To Xml
Anatomy Of An Ajax Application
The Xmlhttprequest Object
Talking With The Server
Using The Returned Data
Our First Ajax Application
Returning Data As Text
Ahah-asynchronous Html And Http
Returning Data As Xml
Web Services And The Rest Protocal
Web Services Using Saop
The Prototype.js Toolkit
Using Xoad 193
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