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To read and update - create and manipulate - an XML document,
you need an XML parser.
Using the XML parser
The Microsoft XML parser comes with Microsoft Internet Explorer
5.0.
Once you have installed IE 5.0, the parser is available to
scripts, both inside HTML documents and inside ASP files. The
parser features a language-neutral programming model that
supports
:
· JavaScript, VBScript, Perl, VB, Java, C++ and more
· W3C XML 1.0 and XML DOM
· DTD and validation
If you are using JavaScript in IE 5.0, you can create an XML
document object with the following code:
var xmlDoc = new ActiveXObject("Microsoft.XMLDOM")
If you are using VBScript you create the XML document object
with the following code:
set xmlDoc = CreateObject("Microsoft.XMLDOM")
If you are using VBScript in an Active Server Page (ASP), you
can use the following code:
set xmlDoc = Server.CreateObject("Microsoft.XMLDOM")
Loading an XML file into the parser
XML files can be loaded into the parser using script code.
The following code loads an XML document (note.xml) into the XML
parser:
<script language="JavaScript">
var xmlDoc = new ActiveXObject("Microsoft.XMLDOM")
xmlDoc.async="false"
xmlDoc.load("note.xml")
// ....... processing the document goes here </script>
The first line of this script creates an instance of the
Microsoft XML parser.
The second line turns off asynchronized loading, to make sure
that the parser will not continue execution before the document
is fully loaded.
The third line tells the parser to load an XML document called
note.xml.
Loading pure XML text into the parser
XML text can also be loaded from a text string.
The following code loads a text string into the XML parser:
<script language="JavaScript">
var text="<note>"
text=text+"<to>Tove</to><from>Jani</from>"
text=text+"<heading>Reminder</heading>"
text=text+"<body>Don't forget me this weekend!</body>"
text=text+"</note>"
var xmlDoc = new ActiveXObject("Microsoft.XMLDOM")
xmlDoc.async="false"
xmlDoc.loadXML(text)
// ....... processing the document goes here </script>
Note that the "loadXML" method (instead of the "load" method) is
used to load a text string.
Displaying XML with JavaScript
To display XML you can use JavaScript.
JavaScript (or VBScript) can be used to import data from an XML
file and display the XML data inside an HTML page.
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