getCurrentDate() {
  const date = new Date();
  const year = date.getFullYear();
  const month = date.getMonth() + 1; // JavaScript的月份是從0開(kāi)始的，所以需要加1
  const day = date.getDate();
  const hours = date.getHours().toString().padStart(2, '0'); // 補(bǔ)零
  const minutes = date.getMinutes().toString().padStart(2, '0'); // 補(bǔ)零			

  this.currentDate = `${year}-${month}.${day}-${hours}:${minutes}`;
			},

function formatTime(time, format) {
  const date = new Date(time);
  const year = date.getFullYear();
  const month = (date.getMonth() + 1).toString().padStart(2, '0');
  const day = date.getDate().toString().padStart(2, '0');
  const hour = date.getHours().toString().padStart(2, '0');
  const minute = date.getMinutes().toString().padStart(2, '0');
  const second = date.getSeconds().toString().padStart(2, '0');

  let result = '';

  switch (format) {
    case 'yyyy-MM-dd':
      result = `${year}-${month}-${day}`;
      break;
    case 'yyyy/MM/dd':
      result = `${year}/${month}/${day}`;
      break;
    case 'yyyy年MM月dd日':
      result = `${year}年${month}月${day}日`;
      break;
    case 'HH:mm:ss':
      result = `${hour}:${minute}:${second}`;
      break;
    default:
      result = `${year}-${month}-${day} ${hour}:${minute}:${second}`;
  }

  return result;
}

npm install moment --save

import moment from 'moment'
Vue.prototype.$moment = moment

this.$moment('需要轉(zhuǎn)換的時(shí)間').format('YYYY-MM-DD')