時間戳轉換日期

function toDate(number) {
  var n = number;
  var date = new Date(n);
  var y = date.getFullYear();
  var m = date.getMonth() + 1;
  m = m < 10 ? ('0' + m) : m;
  var d = date.getDate();
  d = d < 10 ? ('0' + d) : d;
  var h = date.getHours();
  h = h < 10 ? ('0' + h) : h;
  var minute = date.getMinutes();
  var second = date.getSeconds();
  minute = minute < 10 ? ('0' + minute) : minute;
  second = second < 10 ? ('0' + second) : second;
  return y+'-'m + '-' + d + ' ' + h + ':' + minute':' second;
}
 

時間戳轉換具體時間

function getDateDiff(dateTimeStamp) {
  var result;
  var minute = 1000 * 60;
  var hour = minute * 60;
  var day = hour * 24;
  var halfamonth = day * 15;
  var month = day * 30;
   var now = new Date();//有些特殊 不能使用 new Date()
  var diffValue = now - dateTimeStamp;
  if (diffValue < 0) { return; }
  var monthC = diffValue / month;
  var weekC = diffValue / (7 * day);
  var dayC = diffValue / day;
  var hourC = diffValue / hour;
  var minC = diffValue / minute;
  if (monthC >= 1) {
    result = "" + parseInt(monthC) + "月前";
  }
  else if (weekC >= 1) {
    result = "" + parseInt(weekC) + "周前";
  }
  else if (dayC >= 1) {
    result = "" + parseInt(dayC) + "天前";
  }
  else if (hourC >= 1) {
    result = "" + parseInt(hourC) + "小時前";
  }
  else if (minC >= 1) {
    result = "" + parseInt(minC) + "分鐘前";
  } else
    result = "剛剛";
  return result;
};
 

獲取當前伺服器時間

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

在js中宣告

module.exports = {
  formatTime: formatTime,
  formatTimes: formatTimes,
  toDate: toDate,
  getDateDiff: getDateDiff
}

在js中呼叫

var tool = require('../../utils/util.js');

獲取當前伺服器時間

var DATE = tool.formatTime(new Date());
var TIME = tool.formatTimes(new Date())

轉換日期和具體時間，因為是陣列所以用到了迴圈

for (let i = 0; i < datas.length; i++) {
        datas[i]["limitedAt"] = tool.toDate(datas[i]["limitedAt"])
        datas[i]["createdAt"] = tool.getDateDiff(datas[i]["createdAt"])
      }