js snippets

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fetch(jsonurl)
  .then(function(response) {
    return response.json();
  })
  .then(function(myjson) {
    console.log(json.stringify(myjson));
  });

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var getJSON = function(url, callback) {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', url, true);
    xhr.responseType = 'json';
    xhr.onload = function() {
      var status = xhr.status;
      if (status === 200) {
        callback(null, xhr.response);
      } else {
        callback(status, xhr.response);
      }
    };
    xhr.send();
};

getJSON(jsonUrl, function(err, data) {
  if (err !== null) {
    console.log('Something went wrong: ' + err);
  } else {
      console.log(data['001']);
  }
});