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<!DOCTYPE html> <html> <body> <h1>XMLHttpRequest</h1> <p>The getAllResponseHeaders() function returns the header information of a resource, like length, server-type, content-type, last-modified, etc:</p> <p id="demo"></p> <script> var xmlhttp = new XMLHttpRequest(); xmlhttp.onreadystatechange=function() { if (this.readyState == 4 && this.status == 200) { document.getElementById("demo").innerHTML = this.getAllResponseHeaders(); } }; xmlhttp.open("GET", "xmlhttp_info.txt", true); xmlhttp.send(); </script> </body> </html>
