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<html><!DOCTYPE html>
<html>
<head>
<script>
function loadXMLDoc(url)
{
var xmlhttp;
if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
xmlhttp.onreadystatechange=function()
  {
  if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
    document.getElementById('p1').innerHTML=xmlhttp.getAllResponseHeaders();
    }
  }
xmlhttp.open("GET",url,true);
xmlhttp.send();
}
</script>
</head>
<body>

<p id="p1">The getAllResponseHeaders() function returns the header information of a resource, like length, server-type, content-type, last-modified, etc.</p>
<button onclick="loadXMLDoc('/try/ajax/ajax_info.txt')">Get header information</button>

</body>
</html>
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<html><!DOCTYPE html>
<html>
<head>
<script>
function loadXMLDoc(url)
{
var xmlhttp;
if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
xmlhttp.onreadystatechange=function()
  {
  if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
    document.getElementById('p1').innerHTML=xmlhttp.getAllResponseHeaders();
    }
  }
xmlhttp.open("GET",url,true);
xmlhttp.send();
}
</script>
</head>
<body>
​
<p id="p1">The getAllResponseHeaders() function returns the header information of a resource, like length, server-type, content-type, last-modified, etc.</p>
<button onclick="loadXMLDoc('/try/ajax/ajax_info.txt')">Get header information</button>
​
</body>
</html>
​