XMLHttpRequest getResponseHeader() Method
Complete XMLHttpRequest Object Reference
Definition and Usage
The getResponseHeader() method gets a string containing a specific response
header of the XMLHttpRequest object.
A response header contains file information like length, server-type,
content-type, date-modified, etc.
Syntax
xmlHttp.getResponseHeader(header)
|
| Parameter |
Description |
| name |
A string that specifies the name of the header to get.
Use the getAllResponseHeaders() method to find the possible header names for
the specific document. |
Example
The following code outputs the "Content-Length" header in a HTML element with
id="header":
<html>
<body>
<span id="header"></span>
<script type="text/javascript">
xmlhttp=null;
if (window.XMLHttpRequest)
{// code for Firefox, Mozilla, IE7, etc.
xmlhttp=new XMLHttpRequest();
}
else if (window.ActiveXObject)
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
if (xmlhttp!=null)
{
xmlhttp.onreadystatechange = function()
{
if(xmlhttp.readyState == 4)
{
x=xmlhttp.getResponseHeader("Content-Length");
document.getElementById("header").innerHTML=x;
}
}
xmlhttp.open("GET", "note.xml", true);
xmlhttp.send(null);
}
else
{
alert("Your browser does not support XMLHTTP.");
}
</script>
</body>
</html>
|
Output:
Try-It-Yourself Demos
getResponseHeader()
Get the "Last-Modified" response header from a XMLHttpRequest object
Complete XMLHttpRequest Object Reference
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