XMLHttpRequest object
Why XMLHttpRequest object is used in the AJAX?
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XMLHttpRequest object is used by the JavaScript in order to transfer the XML and other text data between server and the client. XMLHttpRequest object enables client-side script to execute the HTTP request. AJAX applications use the XMLHttpRequest object so that browser may communicate to the server without having a postback of the entire page. In previous versions of the Internet Explorer, MSXML ActiveX component is liable to offer this functionality; on other hand, Internet Explorer 7 and other browsers, like Mozilla Firefox, XMLHttpRequest is not liable to.
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