Microsoft provides the XMLHTTP object for sending and receiving XML data from the client. However, this restricts you from creating portable Web applications, since the XMLHTTP object is an ActiveX object.

Most of the functionality in the XMLHTTP object lies in its ability to send and receive HTTP requests without navigating from the current Web page, giving the appearance of a connected application. This also reduces the amount of network traffic by eliminating the need to reload all the user interface information.

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