Article:		Very Dynamic Web Interfaces
Subject:		Concerns
Date:		2005-04-03 07:00:05
From:		sunnyO5
I am excited about the possible applications of XMLHttpRequest Object but I have some concerns: 1) Using XMLHttpRequest Object can save a lot of bandwidth but does it support caching of webpages in the browser? Webpages using XMLHttpRequest Object seem to loose the browser's history features; you can't use the Go back and forward buttons. Like in the Apple's example (http://developer.apple.com/internet/webcontent/XMLHttpRequestExample/example.html), one has to make the choices again to view the information. So can't view the information offline. 2) In the Google Suggest example, for each key press a request is sent to the server. So if you have 50 users typing an average of 10 letters, you have more than 500 requests sent to the server. Is this a huge concern for developing applications with this sort of feature (like dynamic function lookup on php.net)? Nevertheless, XMLHttpRequest Object promises a better interaction with the user. Thanks.

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