Advanced Requests and Responses in Ajax

An anonymous reader writes "The Web is no longer a place where simple applications are tolerated; 'users have become more advanced, customers expect robustness and advanced error reporting, and managers are fired because an application goes down 1 percent of the time. It's your job then, to go beyond a simple Ajax application that requires a more thorough understanding of XMLHttpRequest.' This DevWorks article tries to help developers use Ajax to build a solid foundation in which an application handles errors and problems smoothly."

Comments

Corrected URL

[RealProgrammer]

The download link in TFA has an error. To get the code from the article, use:

http://download.boulder.ibm.com/ibmdl/pub/software /dw/web/wa-ajaxintro3_ajax-xhr_adv.zip

Taking the "%20" away from the final "/" made it work.

(There should be no spaces in the URL.)

I would prefer the JSON way

[moria]

Using JSON, JavaScript can load data from any address, when XMLHttpRequest requires you to stay in the same domain. Besides, JSON is JavaScript native and is therefore much easier to consume, for example, using MochiKit. As for the generator, it is trivial to convert native data to JSON data in a wide range of programming languages, including all the major server side scripting languages, like Python and Java. Yahoo has released a lot of their APIs on JSON and some excellent Python WebApp Framework has built-in support to speak to the client scripts in JSON.