vue2.0 自定义日期时间过滤器

// 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;
  }

// 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)
}