let xhr = new XMLHttpRequest ();
xhr.onreadystatechange = function () {
if (this.readyState == 4) {
clearTimeout(timeout);
// do something with response data
}
}
let timeout = setTimeout( function () {
xhr.abort(); // call error callback
}, 60*1000 /* timeout after a minute */ );
xhr.open('GET', url, true);
xhr.send();