XMLHttpRequest

XMLHttpRequest (XHR) is an API in the form of a JavaScript object whose methods transmit HTTP requests from a web browser to a web server.^[1] The methods allow a browser-based application to send requests to the server after page loading is complete, and receive information back.^[2] XMLHttpRequest is a component of Ajax programming. Prior to Ajax, hyperlinks and form submissions were the primary mechanisms for interacting with the server, often replacing the current page with another one.^[2]

^ Mahemoff, Michael (2006). Ajax Design Patterns. O'Reilly. p. 92. ISBN 978-0-596-10180-0. 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[.]
^ ^a ^b Mahemoff, Michael (2006). Ajax Design Patterns. O'Reilly. p. 92. ISBN 978-0-596-10180-0.

[adp-92_quote1-1] Mahemoff, Michael (2006). Ajax Design Patterns. O'Reilly. p. 92. ISBN 978-0-596-10180-0. 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[.]

[adp-92-2] Mahemoff, Michael (2006). Ajax Design Patterns. O'Reilly. p. 92. ISBN 978-0-596-10180-0.

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