📄 软考英语精典短文每日一练__what is ajax.htm
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<TD width=64>作 者</TD>
<TD width=233>251547129</TD>
<TD width=63>阅读次数</TD>
<TD width=85>19</TD>
<TD width=63>回复次数</TD>
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<TD width=233>基础应用与新手入门>> IT英语</TD>
<TD width=63>发表日期</TD>
<TD width=85>2006-10-14</TD>
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<TD
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<DIV class=userInfoBox>积分：-37<BR>第一级</DIV>
<DIV class=userInfoBox>注册时间<BR>2006-5-26</DIV></DIV></TD>
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<DIV class=TitleInfoBox align=right>发表时间：2006-10-14 22:35:58 楼主</DIV>
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<DIV id=cont_right style="WIDTH: 495px">AJAX, or Asynchronous JavaScript
and XML, is a new way for web pages to send and receive data to and from a
web site without forcing the user to wait for a new page to load. <BR>True
AJAX applications, like Google's gmail or my live support example, have
certain things in common: <BR><BR>They can use a standard web browser,
such as Firefox, Internet Explorer or Safari, as their only user
interface. <BR>They don't force the user to wait for the web server every
time the user clicks a button. This is what "asynchronous" means. For
instance, gmail fetches new email messages in the background
("asynchronously") without forcing the user to wait. This makes an AJAX
application respond much more like a "real" application on the user's
computer, such as Microsoft Outlook. <BR>They use standard JavaScript
features (including the unofficial XMLHTTPRequest standard, pioneered by
Microsoft and adopted by Firefox and other browsers) to fetch data in the
background and display different email messages or other data "on the fly"
when the user clicks on appropriate parts of the interface. <BR>Usually
they manipulate data in XML format. This allows AJAX applications to
interact easily with server-side code written in a variety of languages,
such as PHP, Perl/CGI, Python and ASP.NET. Using XML isn't absolutely
necessary, and in fact many "AJAX" applications don't -- they use the
XMLHTTPRequest object to send and receive data "on the fly," but they
don't actually bother packaging that data as XML.
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