Loading XML from JavaScript

Loading XML from JavaScript

When creating and consuming Web services in Internet Explorer, you need to be familiar with operations in Extensible Markup Language (XML). Specifically, you have to know how to load an XML file from JavaScript and manipulate the data loaded into the Web browser.

The data read from an XML file is arranged in Internet Explorer's memory as an object called DOMDocument. The DOMDocument object has 35 properties, 25 methods, and three events.

With this object, you can load XML files, navigate the document graph model and query nodes of the graph. The first thing you need to do is create an empty object, which you can accomplish with the ActiveXObject creator:

xmldoc = new ActiveXObject("Msxml2.DOMDocument.3.0");

Now you can load the XML file with the load() method:

xmldoc.load("mydvd.xml");

The following script loads an XML file and prints its content to an alert box. Try it in Internet Explorer. You should get the XML file echoed back in an alert box.

<SCRIPT LANGUAGE="JavaScript">
<!--
  var xmldoc=new ActiveXObject("MSXML2.DOMDocument.3.0");
  xmldoc.load("mydvd.xml");
  alert(xmldoc.documentElement.xml);
// -->
</SCRIPT>

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