XMLHttpRequest

From Wikipedia:XMLHttpRequest :

XMLHttpRequest (XHR) is an API that can be used by JavaScript, JScript, VBScript and other web browser scripting languages to transfer and manipulate XML data to and from a web server using HTTP, establishing an independent connection channel between a web page's Client-Side and Server-Side.

The data returned from XMLHttpRequest calls will often be provided by back-end databases. Besides XML, XMLHttpRequest can be used to fetch data in other formats, e.g. JSON or even plain text.

XMLHttpRequest is an important part of the AJAX web development technique, and it is used by many websites to implement responsive and dynamic web applications. Examples of XMLHttpRequest applications include Google's Gmail service, Google Suggest dynamic look-up interface, Meebo, MSN's Virtual Earth and the MapQuest dynamic map interface.

-- Contributors: PeterThoeny

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