xhr.js

function img (url){
var short,ul="";

var xhr = new XMLHttpRequest();
xhr.open('POST', 'https://www.googleapis.com/urlshortener/v1/url?key=AIzaSyD1xzZ9B4NElbFAAz8IAhH9Ko1nbap28OU', 'false');

xhr.setRequestHeader('Content-Type', 'application/json');

xhr.onreadystatechange = function () {
        "use strict";
        if (xhr.readyState === 4) {
                short = JSON.parse(xhr.responseText);
                
                ul = short.id;
                console.log(ul);
                return ul;                
                
                
                
                
        }
}

xhr.send(
                JSON.stringify(
                        {
                                longUrl: url
                        }
                        )
        ); 
console.log(typeof(ul));


}