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The XMLHttpRequest Object

Let AJAX change this text.

// button click event to load the external file
onclick="loadDoc()"

// create XMLHttpRequest()
function loadDoc() {
  const xhttp = new XMLHttpRequest();
  xhttp.onload = function() {
// read the file and display its contents
    document.getElementById("demo").innerHTML = this.responseText;
  }

// defines the XMLHttpRequestObject
  xhttp.open("GET", "ajax_info.txt");
  xhttp.send();
}