How to send a specialized XML request in JavaScript

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I'm fairly new with XML...How would I send the following XML to "https://www.exampleserver.com" ?\[code\]<?xml version='1.0' encoding='UTF-8'?><methodCall> <methodName>ContactService.add</methodName> <params> <param> <value><string>privateKey</string></value> </param> <param> <value><struct> <member><name>FirstName</name> <value><string>John</string></value> </member> <member><name>LastName</name> <value><string>Doe</string></value> </member> <member><name>Email</name> <value><string>[email protected]</string></value> </member> </struct></value> </param> </params> </methodCall>\[/code\]