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XSLT parameters

var oResultFragment = oProcessor.transformToDocument(oXmlDom, document);

var oDiv = document.getElementById(“divResult”);

oDiv.appendChild(oResultFragment);

In the previous example, the processor creates a fragment owned by the

document

object. This enables

the fragment to be added to a

<div/>

element existing in the page.

This all makes perfect sense when the output method for XSLT is either HTML or XML, but what about

when the output is text? To solve this problem, Mozilla creates an XML document with a single element,

<transformiix:result/>

, that contains all the text output. So, using text output from an XSLT file still

results in a valid document or document fragment.

Keeping this in mind, it’s possible to create a

transformNode()

method for Mozilla:

Node.prototype.transformNode = function (oXslDom) {

var oProcessor = new XSLTProcessor();

oProcessor.importStylesheet(oXslDom);

var oResultDom = oProcessor.transformToDocument(this);

var sResult = oResultDom.xml;

if (sResult.indexOf(“<transformiix:result”) > -1) {

sResult = sResult.substring(sResult.indexOf(“>”) + 1,

sResult.lastIndexOf(“<”));

}

return sResult;

};

This method creates a result document using the given XSLT DOM. The resulting XML code is then stored

sResult

using the

xml

property defined earlier in the chapter. That code is then checked to see if it

contains

<transformiix:result/>

. If it does, then the XML part is stripped out (by taking only the

string between the first greater-than symbol and the last less-than symbol). Lastly,

sResult

is returned.

Using this method, you can create code to run in both Mozilla and IE:

var oXmlDom = new XmlDom();

var oXslDom = new XmlDom();

oXmlDom.async = false;

oXslDom.async = false;

oXmlDom.load(“employees.xml”);

oXslDom.load(“employees.xslt”);

alert(oXmlDom.transformNode(oXslDom));

The

XSLTProcessor

in Mozilla also allows you to set XSLT parameters. The

setParameter()

method

accepts three arguments: the namespace URI, the parameter local name, and the value to set. Typically,

the namespace URI is

null

and the local name is simply the parameter ’s name. This method must be

called prior to

transformToDocument()

transformToFragment()

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Chapter 15

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