ES6 XHR from Mackan from Devcord Discord

xhr.js

function loadData(url){
  return new Promise((resolve, reject) => {
    let xmlhttp = new XMLHttpRequest();
    xmlhttp.onreadystatechange = function(){
      if(xmlhttp.readyState === XMLHttpRequest.DONE){
        if(xmlhttp.status === 200){
          resolve(xmlhttp.responseText);
        }else{
          reject(xmlhttp.status);
        }
      }
    };
    xmlhttp.open("GET", url, true);
    xmlhttp.send();
  });
}