example:

var req = jt_.xhr.newRequest();
if (req.readyState != 0) req.abort();
req.open(method, proxy_url, true);
req.setRequestHeader('Content-Type','application/x-www-form-urlencoded; charset=UTF-8');
req.onreadystatechange = function () {
	if (req.readyState == 4) {
		if (callBack) {
			var respObj;
			if ((req.readyState == 4) && (req.status == 200) && req.responseXML && req.responseXML.hasChildNodes()) {
				respObj = {"isXML":"true"};
				var err = jt_.xhr.getNode(req.responseXML, 'error_response');
				if (err) {
					respObj.error_code = jt_.xhr.getNodeVal(err, 'error_code');
					respObj.error_msg = jt_.xhr.getNodeVal(err, 'error_msg');
				}
			}
			callBack(req, respObj);
		}
	}
}
req.send((method == 'GET') || (method == 'DELETE') ? null : query);

description:

Ajax methods for managing XMLHttpRequest objects and navigating XML documents.

60 lines of code, 1.72 KB

main methods:

newRequest: function() // constructor; returns an XMLHttpRequest object
statusMsg: function(state)
getNode: function(atNode, nodeName) // returns XML DOM node of first 'nodeName' child of 'atNode' (typically unique!)
nodeVal: function(atNode) // returns 'nodeValue' of 'atNode'
getNodeVal: function(atNode, nodeName) // returns 'nodeValue' of first 'nodeName' child of 'atNode' (typically unique!)
getNodeAttr: function(atNode, attrName)
ajaxThis: function(url, func, req)

var jt_.xhr = { src: jt2_.js

}