The Role of AJAX in Web 2.0

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The Role of AJAX in Web 2.0
« on: 12-17-2015, 02:59:33 »
The ability to make an asynchronous call to a URL and have the data return handled by code within the browser is key to creating the RIA experience for the user. Without AJAX ( Asynchronous JavaScript and XML ), browser- resident RIAs would not be feasible for the reasons discussed previously. Additionally,not only can AJAX make asynchronous external method calls (out from the browser), but it can also make internal method calls (within the browser). The latter capability is the basis for providing changes in visual elements within the RIA, including special effects like growing and shrinking areas, tabbed pages,and drag and drop.

As good and as useful as AJAX is in this regard, the fact is that AJAX must be implemented in JavaScript,and that is the source of a good deal of pain for the developer. Although JavaScript has only recently been taken seriously as a development language, its idiosyncrasies and tendency to be broken in different ways in different browsers is a constant source of consternation to developers and end users alike. Even in a nonbroken world though, it’s great to have a level of abstraction sitting atop JavaScript.Fortunately, MochiKit and other libraries are there to help


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