function getDateByTimestamp(val) {
  var date = getDate(val);
  var month = date.getMonth() + 1;
  var day = date.getDate();
  return [date.getFullYear(), month < 10 ? '0' + month : month, day < 10 ? '0' + day : day].join('-');
}

function formatTimestamp(val) {
  if (!val) return '';

  var i = 0;
  if (val.constructor && val.constructor == 'Array') {
    var _str = '';
    for (var len = val.length; i < len; i++) {
      _str += getDateByTimestamp(val[i]) + '、';
    }
    return _str;
  }

  return getDateByTimestamp(val);
}

module.exports = {
  formatTimestamp: formatTimestamp,
};