AJAX Response

<!DOCTYPE html>
<html>
<body>

<h2>The XMLHttpRequest Object</h2>

<p>The getResponseHeader() function is used to return specific header information from a resource, like length, server-type, content-type, last-modified, etc:</p>

<p>Last modified: <span id="demo"></span></p>

<script>
const xhttp=new XMLHttpRequest();
xhttp.onload = function() {
  document.getElementById("demo").innerHTML =
  this.getResponseHeader("Last-Modified");
}
xhttp.open("GET", "/files/ajax.txt");
xhttp.send();
</script>

</body>
</html>

The XMLHttpRequest Object

The getResponseHeader() function is used to return specific header information from a resource, like length, server-type, content-type, last-modified, etc:

Last modified: