What is HTTP - W3Schools
https://www.w3schools.com/whatis/whatis_http.asp
WEBXHR is a JavaScript object that is used to transfer data between a web browser and a web server. XHR is often used to request and receive data for the purpose of modifying a web page. Despite the XML and Http in the name, XHR is used with other protocols than HTTP, and the data can be of many different types like HTML , CSS , XML , JSON , and ...
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