A modified version of the xmlToJson function from http://davidwalsh.name/convert-xml-json, it removes the useless whitespace strings and extract attributes as normal properties so as to make the json simpler and tidier. Only for personal convenience, any ideas?

xmlToJson.js

// Changes XML to JSON
function xmlToJson(xml) {
  
	// Create the return object
	var obj = {};

	if (xml.nodeType == 1) { // element
		// do attributes
		if (xml.attributes.length > 0) {
		//obj["attributes"] = {};
			for (var j = 0; j < xml.attributes.length; j++) {
				var attribute = xml.attributes.item(j);
				//obj["attributes"][attribute.nodeName] = attribute.nodeValue;
				obj[attribute.nodeName] = attribute.nodeValue;
			}
		}
	} else if (xml.nodeType == 3) { // text
		obj = xml.nodeValue.trim(); // use trim to remove whitespace characters
	}

	// do children
	if (xml.hasChildNodes()) {
		for(var i = 0; i < xml.childNodes.length; i++) {
			var item = xml.childNodes.item(i);
			var nodeName = item.nodeName;
			if (typeof(obj[nodeName]) == "undefined") {
				var tmp = xmlToJson(item);
				if(tmp != "") // if not an empty string
					obj[nodeName] = tmp;
			} else {
				if (typeof(obj[nodeName].push) == "undefined") {
					var old = obj[nodeName];
					obj[nodeName] = [];
					obj[nodeName].push(old);
				}
				var tmp = xmlToJson(item);
				if(tmp != "") // if not an empty string
					obj[nodeName].push(tmp);
			}
		}
	}
	return obj;
};