"Although X in Ajax stands for XML, JSON is used more than XML nowadays because of its many advantages such as being lighter and a part of JavaScript. Both JSON and XML are used for packaging information in the Ajax model."
MDN page || "Ajax: A New Approach to Web Applications": Jesse James Garrett, Feb 2005, introducing Ajax and concepts
XMLHttpRequest
fetch
APIFileReader
API: lets web applications asynchronously read the contents of files (or raw data buffers) stored on the user's computer, using File or Blob objects to specify the file or data to read. File objects may be obtained from a FileList object returned as a result of a user selecting files using the element, from a drag and drop operation's DataTransfer object, or from the mozGetAsFile() API on an HTMLCanvasElement.See also XMLHttpRequest
Last modified 07 October 2024