The JavaScript Source: Ajax : SoftXMLLib

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General

One of the main problems with manipulating XML files is the compatibility issue across different browsers. The purpose of the SoftXMLLib Library is to solve the problem of creating different XMLHTTP and XMLDOM objects for different browsers. This library includes basic functions and properties like those already included in Microsoft.XMLDOM ActiveXObject.

Notes

Created by: Movsesyan Gregory
Web Site: http://www.softxml.com
Posted: January 03, 2007

Tutorial: SoftXMLLib User Guide

Source Code

Paste this source code into the designated areas.

External file

Paste this code into an external JavaScript file named: SoftXMLLib.js

var ajaxObj=null;
var xmlDOMObj=null;
	
function createAjaxObject(){
		if(window.XMLHttpRequest){
			 try {
				  ajaxObj = new XMLHttpRequest(); 
			 }
			 catch(e) {
				  alert("Problem creating AJAX!");
  		}
		}
		else {
			 try {
				  ajaxObj = new ActiveXObject("Microsoft.XMLHTTP");
			 }
			 catch(e) {
				  alert("Problem creating AJAX!");
			 }	
		}
		return ajaxObj;
}

window.onerror = errorHandler;

function errorHandler(message, url, line) {
		alert("Error loading file!");
		return true;
}

var doc;

function load(xmlfile) {
		if (document.implementation && document.implementation.createDocument) {
				xmlDOMObj = document.implementation.createDocument("", "", null);
				xmlDOMObj.async=false;
		} else if (window.ActiveXObject) {
				xmlDOMObj = new ActiveXObject("Microsoft.XMLDOM");
				xmlDOMObj.async=false;
		} else {
				alert('Your browser can\'t handle this script');
				return;
		}
		l=xmlDOMObj.load(xmlfile);
		if(!l) {
				this.loadError = 1;
		} else {
				SoftXMLLib.prototype.documentElement = xmlDOMObj.documentElement;
		}
}
	
function loadXML(xmlString){
		if (document.implementation && document.implementation.createDocument) {
				var parser = new DOMParser();
				try {
					 var doc = parser.parseFromString(xmlString, "text/xml");
				}
				catch(e){alert("XML file is not valid!");};	
				if(doc.documentElement.nodeName=="parsererror") {
					 this.loadXMLError = 1;
				} else {
					 SoftXMLLib.prototype.DOM = doc;
					 SoftXMLLib.prototype.documentElement = doc.documentElement;
				}
		} else if (window.ActiveXObject) {
		  xmlDOMObj = new ActiveXObject("Microsoft.XMLDOM");
		  xmlDOMObj.async=false;
		  l = xmlDOMObj.loadXML(xmlString);
				if(!l){
			   this.loadXMLError = 1;
	 } else {
			 SoftXMLLib.prototype.DOM = xmlDOMObj;
			 SoftXMLLib.prototype.documentElement = xmlDOMObj.documentElement;
		}
	 } else {
		  alert('Your browser can\'t handle this script');
		  return;
		}
}
	
function selectNodes(xpath){
		var selectedNodes = new Array();
		doc = this.documentElement;
		if(doc==null){
				alert("Error loading file!");
				return;
		}
			
		if(document.all){
				var cxpath = new String(xpath).toLowerCase();
				f = doc.selectNodes(xpath);
				for(var i=0;i<f.length;i++) {
					 var elemattr="";
					 var curAttributes = f[i].attributes;
					 if(curAttributes.length>0) {
						  for(y=0;y<curAttributes.length;y++) {
							   if(y<curAttributes.length-1) {
								    var dt=",";
							   } else {
								    var dt="";
							 }
							 elemattr+=curAttributes[y].nodeName + ":\"" + curAttributes[y].nodeValue + "\"" + dt;
						}
				}
				var t = eval("[{" + elemattr + "}]");
				if(f[i].parentNode.nodeName == this.documentElement.nodeName){
						this.self = f[i];
				} else {
						this.self = f[i].parentNode;
				}
				selectedNodes[selectedNodes.length] = {innerText:f[i].text,attributes:t,self:this.self};
		}
		return selectedNodes;
		} else {
				if(navigator.userAgent.indexOf("Firefox")!=-1){
					 var versionindex=navigator.userAgent.indexOf("Firefox")+8
					 if (parseInt(navigator.userAgent.charAt(versionindex))>=1)
					 var xpe = new XPathEvaluator();
					 var nsResolver = xpe.createNSResolver(doc.ownerDocument.documentElement);
					 var headings = xpe.evaluate(xpath, doc, nsResolver, 0, null);
		} else {
					var headings = document.evaluate(xpath, doc, null, XPathResult.ANY_TYPE,null);
		}
		var thisHeading = headings.iterateNext();
		while (thisHeading) {
				var elemattr="";
				var curAttributes = thisHeading.attributes;
				if(curAttributes.length>0) {
						for(var i=0;i<curAttributes.length;i++) {
							 if(i<curAttributes.length-1) {
								  var dt=",";
							 } else {
								  var dt="";
							 }
						elemattr+=thisHeading.attributes[i].nodeName + ":\"" + thisHeading.attributes[i].nodeValue + "\"" + dt;
				}
		}	
		var t = eval("[{" + elemattr + "}]");
				if(thisHeading.parentNode.nodeName == this.documentElement.nodeName) {
						this.self = thisHeading;
				} else {
						this.self = thisHeading.parentNode;
				}
				selectedNodes[selectedNodes.length] = {innerText:thisHeading.textContent,attributes:t,self:this.self};
				thisHeading = headings.iterateNext();
				}
				return selectedNodes;
		};
}
	
function Decode(str) {
		var decoded = "";
		var curStr = new String(str);
		var spl = curStr.split(",");
		for(var i=0;i<spl.length;i++) {
			 decoded+=String.fromCharCode(spl[i])
		}
		return decoded;
}

function Encode(str){
		var encoded = "";
		var curStr = new String(str);
		for(var i=0;i<curStr.length;i++){
			 if(i<curStr.length-1){
				  var dt=",";
			 } else {
				  var dt="";
			 }
		  encoded+=curStr.charCodeAt(i) + dt;
		}
		return encoded;
}
	
function SoftXMLLib(){
		this.createAjaxObject = createAjaxObject;
		this.loadXMLError = 0;
		this.loadError = 0;
		this.load = load;
		this.selectNodes = selectNodes;
		this.loadXML = loadXML;
		this.self = null;
		this.Decode = Decode;
		this.Encode = Encode;
	}

Head

Paste this code into the HEAD section of your HTML document.


<script type="text/javascript" src="SoftXMLLib.js"></script>

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