Using the XML parser
To read and update - create and manipulate - an XML document, you need an 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:
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var xmlDoc=new ActiveXObject("Microsoft.XMLDOM") |
If you are using VBScript, you create the XML document object with the following code:
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set xmlDoc=CreateObject("Microsoft.XMLDOM") |
If you are using VBScript in ASP, you can use the following code:
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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:
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<script type="text/javascript">
var xmlDoc = new ActiveXObject("Microsoft.XMLDOM")
xmlDoc.async="false"
xmlDoc.load("note.xml")
// ....... processing the document goes here
</script> |
The second line in the code above creates an instance of the Microsoft XML parser.
The third line turns off asynchronized loading, to make sure that the parser will not continue execution before the document is fully loaded.
The fourth line tells the parser to load the 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:
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<script type="text/javascript">
var text="<note>"
text=text+"<to>John</to><from>Jany</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.