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MSXML2.DOMDocument

Document.prototype.__checkForErrors__ = function () {

if (this.documentElement.tagName == “parsererror”) {

var reError = />([\s\S]*?)Location:([\s\S]*?)Line Number (\d+), Column

(\d+):<sourcetext>([\s\S]*?)(?:\-*\^)/;

reError.test(this.xml);

this.parseError.errorCode = -999999;

this.parseError.reason = RegExp.$1;

this.parseError.url = RegExp.$2;

this.parseError.line = parseInt(RegExp.$3);

this.parseError.linepos = parseInt(RegExp.$4);

this.parseError.srcText = RegExp.$5;

}

};

Note that the

errorCode

is set to

–999999

no matter what error occurs. Trying to map all of Microsoft’s

error codes would be a tedious and unnecessary task. Most of the time, you just check to see if

parseError

is anything other than

, not necessarily a particular number.

Next, the

load()

and

loadXML()

methods must be updated to use

initError()

(to clear all error val-

ues before parsing begins) and

checkForErrors()

(to check for any parsing errors when the parsing

has completed):

function XmlDom() {

if (window.ActiveXObject) {

var arrSignatures = [“MSXML2.DOMDocument.5.0”, “MSXML2.DOMDocument.4.0”,

“MSXML2.DOMDocument.3.0”, “MSXML2.DOMDocument”,

“Microsoft.XmlDom”];

for (var i=0; i < arrSignatures.length; i++) {

try {

var oXmlDom = new ActiveXObject(arrSignatures[i]);

return oXmlDom;

} catch (oError) {

//ignore

}

throw new Error(“MSXML is not installed on your system.”);

} else if (document.implementation && document.implementation.createDocument) {

var oXmlDom = document.implementation.createDocument(“”,””,null);

oXmlDom.parseError = {

valueOf: function () { return this.errorCode; },

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XML in JavaScript

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