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<!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", "ajax_info.txt"); xhttp.send(); </script> </body> </html>
