util.js

const formatTime = date => {  const year = date.getFullYear()  const month = date.getMonth() + 1  const day = date.getDate()  const hour = date.getHours()  const minute = date.getMinutes()  const second = date.getSeconds()  return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')}const formatNumber = n => {  n = n.toString()  return n[1] ? n : '0' + n}module.exports = {  formatTime: formatTime}

//logs.js

const util = require('../../utils/util.js')Page({  data: {    logs: []  },  onLoad: function () {    this.setData({      logs: (wx.getStorageSync('logs') || []).map(log => {        return util.formatTime(new Date(log))      })    })  }})