Analysis of information sources in references of the Wikipedia article "XMLHttpRequest" in Chinese language version.
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The reality is that the client architecture of GMail appears to follow the rough design of the Exchange 2000 implementation of Outlook Web Access for IE5 and later which shipped way back in 2000.
Javascript lacks a portable mechanism for general network communication[.] ... But thanks to the XMLHttpRequest object, ... Javascript code can make HTTP calls back to its originating server[.]
The reality is that the client architecture of GMail appears to follow the rough design of the Exchange 2000 implementation of Outlook Web Access for IE5 and later which shipped way back in 2000.
