http://devel.actinium.org/js/ajax.js/

ajax.js

(function () {
    // interface
    var ajax = function (args) {
        return new ajaxObject(args);
    };
    
    // object
    var ajaxObject = function (args) {
        // init
        this.request = new XMLHttpRequest();
        
        // send request
        if (!args || !args.url) {
            throw new Error('args.url is empty!');
        }
        this.request.open(args.method || 'GET', args.url);
        if (args.noCache || args.cache === false) {
            this.request.setRequestHeader('If-Modified-Since', 'Thu, 01 Jun 1970 00:00:00 GMT');
            this.request.setRequestHeader('Pragma', 'no-cache');
            this.request.setRequestHeader('Cache-Control', 'no-cache');
        }
        if (args.cookie || args.withCredentials) {
            this.request.withCredentials = true;
        }
        this.request.send(args.data || null);
    };
    
    // callback
    ajaxObject.prototype.success = function (fn) {
        return this.addEventListener('load', fn);
    };
    ajaxObject.prototype.error = function (fn) {
        return this.addEventListener('error', fn);
    };
    ajaxObject.prototype.done = function (fn) {
        return this.addEventListener('loadend', fn);
    };
    ajaxObject.prototype.addEventListener = function (evt, fn) {
        var instance = this;
        var caller = function (e) {
            fn.call(instance, this, e);
        };
        if (this.request.addEventListener) {
            this.request.addEventListener(evt, caller);
        } else {
            // if you need to support <=ie8, implement here. or ignore events when ie8
        }
        return this;
    };
    
    // export
    window.ajax = ajax;
})();
//(function(){var f=function(a){return new g(a)};var g=function(a){this.request=new XMLHttpRequest();if(!a||!a.url){throw new Error('args.url is empty!');}this.request.open(a.method||'GET',a.url);if(a.noCache||a.cache===false){this.request.setRequestHeader('If-Modified-Since','Thu, 01 Jun 1970 00:00:00 GMT');this.request.setRequestHeader('Pragma','no-cache');this.request.setRequestHeader('Cache-Control','no-cache')}if(a.cookie||a.withCredentials){this.request.withCredentials=true}this.request.send(a.data||null)};g.prototype.success=function(a){return this.addEventListener('load',a)};g.prototype.error=function(a){return this.addEventListener('error',a)};g.prototype.done=function(a){return this.addEventListener('loadend',a)};g.prototype.addEventListener=function(a,b){var c=this;var d=function(e){b.call(c,this,e)};if(this.request.addEventListener){this.request.addEventListener(a,d)}else{}return this};window.ajax=f})();