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A good link for understanding AJAX Architecture
bookmark collection from: http://dotnetguts.blogspot.com/2007/09/article-on-ajax-architecture.html |
Showing posts with label Ajax. Show all posts
Showing posts with label Ajax. Show all posts
Wednesday, September 5, 2007
Article on AJAX Architecture
Monday, August 13, 2007
AJAX Life cycle
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The Ajax lifecycle is more like that of a traditional GUI than a traditional web application, with DOM objects acting like GUI widgets. The script registers event listeners on DOM objects, and manipulates the DOM in response to those events. As part of the event-processing cycle, the server may be invoked. There's actually a slight complication here in that the server calls are asynchronous, so the event-listening phase is split from the event-responding phase. Here's a typical Ajax lifecycle within the browser:
Of course, there are plenty of variants. In particular, many events are handled locally and don't actually trigger a trip to the server. Also, some Ajax applications are short-lived and the browser interaction is eventually terminated with the user submitting a form. Others remain to interact with the user as long as they are in the user's browser. Note that the Browser Event and the Server Request occur in one thread, and the Server Response and Browser Update occur in a separate thread. This is due to the asynchronous nature of the server request. It's actually possible to configure XMLHttpRequest to make synchronous calls, but poor practice as it holds up the user. |
AJAX Framework list
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