javascript

Chapter 15: XML in JavaScript
using the MSXML2.FreeThreadedDOMDocument ActiveX object, which supports all of the same
interfaces as a normal DOM document in IE . This object needs to be created using the most up - to - date
version as well. For example:
function createThreadSafeDocument(){
if (typeof arguments.callee.activeXString != “string”){
var versions = [“MSXML2.FreeThreadedDOMDocument.6.0”,
“MSXML2.FreeThreadedDOMDocument.3.0”,
“MSXML2.FreeThreadedDOMDocument”];
}
for (var i=0,len=versions.length; i < len; i++){
try {
new ActiveXObject(versions[i]);
arguments.callee.activeXString = versions[i];
break;
} catch (ex){
//skip
}
}
}
return new ActiveXObject(arguments.callee.activeXString);
Aside from the different signature, using a thread - safe XML DOM document is the same as using the
normal kind, as shown here:
var xsltdom = createThreadSafeDocument();
xsltdom.async = false;
xsltdom.load(“employees.xslt”);
After the free - threaded DOM document is created and loaded, it must be assigned to an XSL template,
which is another ActiveX object. The template is used to create an XSL processor object that can then be
used to transform an XML document. Once again, the most appropriate version must be created, like this:
function createXSLTemplate(){
if (typeof arguments.callee.activeXString != “string”){
var versions = [“MSXML2.XSLTemplate.6.0”,
“MSXML2.XSLTemplate.3.0”,
“MSXML2.XSLTemplate “];
}
for (var i=0,len=versions.length; i < len; i++){
try {
new ActiveXObject(versions[i]);
arguments.callee.activeXString = versions[i];
break;
} catch (ex){
//skip
}
}
}
return new ActiveXObject(arguments.callee.activeXString);
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