小程序计算时间显示为刚刚、几分钟前、几小时前等格式

1、在utils文件下建立一个timestamp.js文件用于计算时间

timestamp.js文件

// 将时间转换成几天前，几个月前，几小时前等
function getDateDiff(dateTimeStamp) {   //dateTimeStamp是一个时间毫秒，注意时间戳是秒的形式，在这个毫秒的基础上除以1000，就是十位数的时间戳。13位数的都是时间毫秒。
  var result;
  var minute = 1000 * 60;      //把分，时，天，周，半个月，一个月用毫秒表示
  var hour = minute * 60;
  var day = hour * 24;
  var week = day * 7;
  var halfamonth = day * 15;
  var month = day * 30;
  var now = new Date().getTime();   //获取当前时间毫秒
  // console.log(now)
  var diffValue = now - dateTimeStamp;//时间差

  if (diffValue < 0) {
    return;
  }
  var minC = diffValue / minute;  ////计算时间差的分，时，天，周，月
  var hourC = diffValue / hour;
  var dayC = diffValue / day;
  var weekC = diffValue / week;
  var monthC = diffValue / month;
  if (monthC >= 1 && monthC <= 3) {
    result = " " + parseInt(monthC) + "月前"
  } else if (weekC >= 1 && weekC <= 3) {
    result = " " + parseInt(weekC) + "周前"
  } else if (dayC >= 1 && dayC <= 6) {
    result = " " + parseInt(dayC) + "天前"
  } else if (hourC >= 1 && hourC <= 23) {
    result = " " + parseInt(hourC) + "小时前"
  } else if (minC >= 1 && minC <= 59) {
    result = " " + parseInt(minC) + "分钟前"
  } else if (diffValue >= 0 && diffValue <= minute) {
    // && diffValue <= minute
    result = "刚刚"
  } else {
    var datetime = new Date();
    datetime.setTime(dateTimeStamp);
    var Nyear = datetime.getFullYear();
    var Nmonth = datetime.getMonth() + 1 < 10 ? "0" + (datetime.getMonth() + 1) : datetime.getMonth() + 1;
    var Ndate = datetime.getDate() < 10 ? "0" + datetime.getDate() : datetime.getDate();
    var Nhour = datetime.getHours() < 10 ? "0" + datetime.getHours() : datetime.getHours();
    var Nminute = datetime.getMinutes() < 10 ? "0" + datetime.getMinutes() : datetime.getMinutes();
    var Nsecond = datetime.getSeconds() < 10 ? "0" + datetime.getSeconds() : datetime.getSeconds();
    result = Nyear + "-" + Nmonth + "-" + Ndate
  }
  return result;
}
// 将标准时间转换成时间戳
function getDateTimeStamp(dateStr) {
  return Date.parse(dateStr.replace(/-/gi, "/"));
}
module.exports = {
  getDateDiff: getDateDiff,
  getDateTimeStamp: getDateTimeStamp
}

2、在需要引用的js页面中引入此文件

var timestamp = require('../../../utils/timestamp.js') //引入进行格式化时间

3、调用

//先将时间转换成时间戳
var stamp = timestamp.getDateTimeStamp(teacherAppraiseTime)
//然后将时间戳转成几个小时、几分钟等格式
var time = timestamp.getDateDiff(stamp);