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XML document

var oProcessor = new XSLTProcessor()

oProcessor.importStylesheet(oXslDom);

oProcessor.setParameter(null, “message”, “Hello World!”);

var oResultDom = oProcessor.transformToDocument(oXmlDom);

Two other methods are related to parameters,

getParameter()

and

removeParameter()

, which are

used to get the current value of a parameter and remove the parameter value, respectively. Each method

takes the namespace URI (once again, typically

null

) and the local name of the parameter:

var oProcessor = new XSLTProcessor()

oProcessor.importStylesheet(oXslDom);

oProcessor.setParameter(null, “message”, “Hello World! “);

alert(oProcessor.getParameter(null, “message”); //outputs “Hello World!”

oProcessor.removeParameter(null, “message”);

var oResultDom = oProcessor.transformToDocument(oXmlDom);

These methods aren’t used often and are provided mostly for convenience.

Summary

This chapter introduced you to the client-side XML capabilities of Internet Explorer and Mozilla. The

first topic covered was the use of an XML DOM model on the client side using the MSXML library in IE

and a native, DOM-compliant interface in Mozilla. You learned the differences between the two models,

as well as a way to bridge that gap to make your code more straightforward.

Next, you learned about each browser ’s support for XPath, a language designed to locate specific parts

of an XML document. This section included discussion on the different implementations in IE and

Mozilla. You learned that IE chose a non-standard API, whereas Mozilla chose to follow the DOM Level

3 XPath specification. Again, methods of creating a standard cross-browser approach were discussed.

The last topic discussed was the concept of JavaScript XML manipulation and transformation using

XSLT. You learned about the two ways to accomplish XSLT transformations using JavaScript in IE,

through the

transformNode()

method and the

XSLProcessor

object. You also learned about Mozilla’s

XSLTProcessor

object and how it compares to IE’s implementation. Using

XSLTProcessor

, you

learned how to create a

transformNode()

method for use in Mozilla.

Remember, the material covered in this chapter only works in Internet Explorer and Mozilla because

other browsers have not yet implemented any JavaScript support for XML, XPath, and XSLT.

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