(public).sospep.subjects ~ view article ~ ajax-overview

<h1 style="text-align: center;">ajax</h1>
<h2>[what]</h2>
<ol>
<li>] AJAX stands for Asynchronous Javascript and Xml,</li>
<li>] AJAX is a "technique/practice" used on web pages(+ in web apps) to ... perform "partial" page updates or partial page postbacks,</li>
</ol>
<h2>[why]</h2>
<ol>
<li>] this typically provides a better user experience b/c it is faster to update data on the page in response to a user action</li>
<li>] the user does not have to wait for an "entire page" re - load to occur when they are interacting with the webpage</li>
<li>] ajax reduces server round trips</li>
<li>] reduces page load time</li>
<li>] reduces data consumption (network bandwidth)</li>
</ol>
<h2>[example]</h2>
<ol>
<li><strong>]&nbsp;a page with a series of cascading select boxes</strong></li>
<ol>
<li>for Country, State, City.</li>
<li>When the user selects the country, the list of states gets updated.</li>
<li>When the user selects the state, the list of cities gets updated.</li>
</ol></ol>
<h2>[where]</h2>
<ol>
<li>] wherever</li>
</ol>
<h2>[when]</h2>
<ol>
<li>] whenever</li>
</ol>
<h2>[how-to]</h2>
<ol>
<li>] pre-req, </li>
<li>] getting started, -</li>
<li>] uses the XMLHTTP request object </li>
<li>] data is often returned as XML</li>
</ol>
<h2>[ref=]</h2>
<ol>
<li>] ch 29, 30, pro asp.net 4.0, ch 44 - 866 cascading selects for add pages -</li>
<li>] + ebook unobtrusive ajax by jeremey skinner, LOC=my documents/</li>
<li>] http://www.quora.com/AJAX-1/What-are-some-best-practices-to-use-when-making-a-website-that-uses-a-lot-of-AJAX</li>
</ol>

~ view article ~ Chapter] ch-013-feature-AJAX FROM [ Book] language-javascript IN [ libraries] technology-developer-www