read response from xhr requests

xhr-reader

(function (open) {
XMLHttpRequest.prototype.open = function (method, url, async, user, pass) {
    if(url=="some url ") { // remove this if you want to listen to everyhting 
      console.log(this.onreadystatechange);
        this.addEventListener("readystatechange", function () {
            console.log('readystate: ' + this.readyState);
            if(this.responseText !== '') {
                this.responseText = this.responseText.split('&')[0];
            }
        }, false);
    }
    open.call(this, method, url, async, user, pass);
};
})(XMLHttpRequest.prototype.open);