JavaScript XML Http Request

This section illustrates you how to access XML file with an XMLHTTP object using JavaScript.

The XMLHttpRequest object allows to update a web page without reloading. It requests and receives the data from the server after the page has loaded. In the given example, we have created XMLHttpRequest object and used it with the method open("GET", url, true) to make a GET request for the given url 'data.xml'. It provides readyState property of XMLHttpRequest to get the state of the response. For example, the value 4 indicates that the load is completed. The property responseText contains the server response which allows to display the node values of XML file.

Here is the data.xml:

<Company>
<Employee>
<name>Angelina</name>
<address>Rohini,Delhi</address>
<designition>Engineer</designition>
</Employee>
</Company>

Here is the code:

<html>
<h2>XML HTTP Request</h2>
<script type="text/javascript">
function include(url,id) {
var xmlhttp = false;
if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
xmlhttp = new XMLHttpRequest();
}
else if (window.ActiveXObject) {
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("GET", url,true);
xmlhttp.onreadystatechange=function() {
if (xmlhttp.readyState==4) {
document.getElementById(id).innerHTML = xmlhttp.responseText;
}
}
xmlhttp.send(null)
}
</script>
<body onload="include('data.xml', 'div')";>
<b>Employee's Information:</b> <div id='div'></div>
</body>
</html>

Output will be displayed as:

Download Source Code:

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