方法一：

// template
{{a | data}}

//script
data:{
    a: Date.now()
}
filters: {
   data:function (input) {
       var d = new Date(input);
       var year = d.getFullYear();
       var month = d.getMonth() + 1;
       var day = d.getDate() <10 ? '0' + d.getDate() : '' + d.getDate();
       var hour = d.getHours();
       var minutes = d.getMinutes();
       var seconds = d.getSeconds();
       return  year+ '-' + month + '-' + day + ' ' + hour + ':' + minutes + ':' + seconds;
   }

方法二： 正则

// template
{{date | formatDate}}

//script
import {formatDate} from '../../common/js/date'

filters: {
  formatDate (time) {
    let date = new Date(time)
    return formatDate(date, 'yyyy-MM-dd hh:mm')
  }
}

//date.js
export function formatDate (date, fmt) {
  if (/(y+)/.test(fmt)) {
    fmt = fmt.replace(RegExp.$1, (date.getFullYear() + '').substr(4 - RegExp.$1.length))
  }
  let o = {
    'M+': date.getMonth() + 1,
    'd+': date.getDate(),
    'h+': date.getHours(),
    'm+': date.getMinutes(),
    's+': date.getSeconds()
  }
  for (let k in o) {
  if (new RegExp(`(${k})`).test(fmt)) {
      let str = o[k] + ''
      fmt = fmt.replace(RegExp.$1, (RegExp.$1.length === 1) ? str : padLeftZero(str))
    }
  }
  return fmt
}
function padLeftZero (str) {
  return ('00' + str).substr(str.length)
}