Gismeteo get xml

HTML

<span>Температура в Москве: </span><span id="temperatureValue"></span>

JavaScript

function xmlToJson(xml) {
  var obj = {};

  if (xml.nodeType == 1) {
    if (xml.attributes.length > 0) {
      obj["@attributes"] = {};
      for (var j = 0; j < xml.attributes.length; j++) {
        var attribute = xml.attributes.item(j);
        obj["@attributes"][attribute.nodeName] = attribute.nodeValue;
      }
    }
  } else if (xml.nodeType == 3) { // text
    obj = xml.nodeValue;
  }

  if (xml.hasChildNodes()) {
    for (var i = 0; i < xml.childNodes.length; i++) {
      var item = xml.childNodes.item(i);
      var nodeName = item.nodeName;
      if (typeof(obj[nodeName]) == "undefined") {
        obj[nodeName] = xmlToJson(item);
      } else {
        if (typeof(obj[nodeName].push) == "undefined") {
          var old = obj[nodeName];
          obj[nodeName] = [];
          obj[nodeName].push(old);
        }
        obj[nodeName].push(xmlToJson(item));
      }
    }
  }
  return obj;
};

function getTemperature(cityId) {
  var gisUrl = '//services.gismeteo.ru/inform-service/bbc003ba554f0c6ebd4603139dcea58f/forecast/?city=' + cityId;
  var xhr = new XMLHttpRequest();
  xhr.open('GET', gisUrl, true);
  xhr.onreadystatechange = function() {
    if (xhr.readyState == 4 && xhr.status == 200) {
      var doc = xhr.responseXML;
      //var jsonText = JSON.stringify(xmlToJson(doc));
      var currentTemperature = xmlToJson(doc).weather.location.day[0].forecast[0].values['@attributes'].t;
      console.log(currentTemperature);
      var tDiv = document.getElementById('temperatureValue');

      tDiv.innerText = currentTemperature;
    }
  };
  xhr.send(null);
}
getTemperature(33345); // 4368 - Moscow