Jon Doane

What is Ajax [AJAX]? Original Acronym of

AJAX:Asynchronous JavaScript and XML.

Currently known as Ajax which doesn’t require XML or JavaScript. Ajax code is typically called and run on the

client-side.

Why Use Ajax? (Pros)

Functionality for the client.

Can reduce bandwidth usage.

Dynamic Content. Security and

Validation.

Why not to use Ajax. (Cons) Fetched content does

not register with browser history.

Have fun bookmarking.

Can bring a server to its knees.

No viable reason to need to use it.

Good uses of Ajax. =D

Gmail (Google Mail) – Link Zimbra (Email @ PSU) – Link

Advanced Ajax Usages iGoogle (Customizable Home Page) Backbase AJAX RSS Reader

Bad Uses of Ajax. t.t

Form Submission Requiring Ajax for required functionality. Authentication Having it do everything under the sun.

Ajax: When JavaScript Fails.

What if JavaScript or other technologies fail due to client-side restrictions?

Ajax is no longer limited to use of JavaScript and XML.

Ajax is a method, not something you should rely on. “Program defensively.”

Ajax Intensive Web Applications and Web 2.0 We have the technology to (insert here). Google Maps Forums with “Quick Reply” Meebo – Web-Based Instant Messaging

Client (Requires the use of JS and Ajax) YouTube Facebook

Ajax: Conclusion

Very powerful when used appropriately. It is a method not a necessity. Do not rely on it if at all possible. Have

an alternate method if it fails.

Citations

http://en.wikipedia.org/wiki/Ajax http://it.toolbox.com/blogs/beyond-the-

enterprise/using-ajax-in-real-life-10982 http://sixrevisions.com/ajax/

ajax_techniques/ http://www.adaptivepath.com/ideas/

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