config.js

const url = {
  host: 'https://easy-mock.com/mock/59b9e6b9e0dc663341a92e27/front/',
  login: 'login'
};


(function(scope) {
  var ø = {};
  var createXHR = (function(){
    if(typeof XMLHttpRequest != "undefined"){
      return function(){return new XMLHttpRequest(); };
    }else if(typeof ActiveXObject != "undefined"){
      return function(){
        if (typeof arguments.callee.activeXString != "string"){
          var versions = ["MSXML2.XMLHttp.6.0", "MSXML2.XMLHttp.3.0", "MSXML2.XMLHttp"], i, len;
          for (i=0,len=versions.length; i < len; i++){
            try {
              new ActiveXObject(versions[i]);
              arguments.callee.activeXString = versions[i];
              break;
            } catch (ex){}
          }
        }
        return new ActiveXObject(arguments.callee.activeXString);
      };
    } else {return function(){throw new Error("No XHR object available."); }; }
  })();

  function sendAjax() {
    var xhr = createXHR();
    xhr.onreadystatechange = function() {
      if(xhr.readyState == 4) {
        if(xhr)
      }
    }
  }
})(window);