csv export

var data = [['name1', 'city1', 'some other info'], ['name2', 'city2', 'more info']];
var csvContent = '';
data.forEach(function (infoArray, index) {
  dataString = infoArray.join(';');
  csvContent += index < data.length ? dataString + '\n' : dataString;
});

var download = function(content, fileName, mimeType) {
  var a = document.createElement('a');
  mimeType = mimeType || 'application/octet-stream';

  if (navigator.msSaveBlob) { // IE10
    return navigator.msSaveBlob(new Blob([content], { type: mimeType }), fileName);
  } else if ('download' in a) { //html5 A[download]
    a.href = 'data:' + mimeType + ',' + encodeURIComponent(content);
    a.setAttribute('download', fileName);
    document.body.appendChild(a);
    a.click();
    document.body.removeChild(a);
    return true;
  } else { //do iframe dataURL download (old ch+FF):
    var f = document.createElement('iframe');
    document.body.appendChild(f);
    f.src = 'data:' + mimeType + ',' + encodeURIComponent(content);

    setTimeout(function() {
      document.body.removeChild(f);
    }, 333);
    return true;
  }
}

download(csvContent, 'csv file.csv', 'text/csv');