nodejs 模塊moment格式化時間，獲取當前時間的前一天時間

var moment = require('moment');

 moment.locale('zh-cn');
  var today = {};
  var _today = moment();
  today.year = _today.format('yyyy'); /*如今的年*/
  today.date = _today.format('YYYY-MM-DD'); /*如今的時間*/
  today.yesterday = _today.subtract(1, 'days').format('YYYY-MM-DD'); /*前一天的時間*/

  var formatDate = moment(12345678977).format('YYYY-MM-DD HH:mm:ss'); /*格式化時間*/