time.js

/*
 * Author       : OBKoro1
 * Date         : 2021-09-13 16:14:51
 * LastEditors  : OBKoro1
 * LastEditTime : 2021-11-04 16:02:13
 * FilePath     : /js-base/src/scene/time.js
 * description  : JS转换时间戳为刚刚、几分钟前、几小时前、几天前、几周前、几个月前等格式
 * koroFileheader VSCode插件
 * Copyright (c) 2021 by OBKoro1, All Rights Reserved.
 */

// 思路：获取时间戳的差
// 时间差除以时间格式需要的倍数 如果超过1 则表示时间差在这个等级中
function getDateDiff(dateTimeStamp) {
  const now = Date.now()
  const diffValue = now - dateTimeStamp
  if (diffValue < 0) {
    console.error('结束日期不能小于开始日期！')
    return
  }
  // 时间格式转换需要的数字倍数
  const minute = 1000 * 60 //
  const hour = minute * 60//
  const day = hour * 24 // 几天前
  const month = day * 30 // 月
  // 时间差 除以时间格式需要的倍数
  const monthC = diffValue / month
  const weekC = diffValue / (7 * day)
  const dayC = diffValue / day
  const hourC = diffValue / hour
  const minC = diffValue / minute
  // 如果超过1 则表示时间差在这个等级中
  let result = ''
  if (monthC >= 1) {
    result = `发表于${parseInt(monthC, 10)}个月前`
  } else if (weekC >= 1) {
    result = `发表于${parseInt(weekC, 10)}周前`
  } else if (dayC >= 1) {
    result = `发表于${parseInt(dayC, 10)}天前`
  } else if (hourC >= 1) {
    result = `发表于${parseInt(hourC, 10)}个小时前`
  } else if (minC >= 1) {
    result = `发表于${parseInt(minC, 10)}分钟前`
  } else result = '刚刚发表'
  return result
}

// 测试代码
console.log(getDateDiff(Date.now() - 10)) // 刚刚
console.log(getDateDiff(Date.now() - 1000 * 60 * 5)) // 五分钟前
console.log(getDateDiff(Date.now() - 1000 * 60 * 60 * 2)) // 2小时前
console.log(getDateDiff(Date.now() - 1000 * 60 * 60 * 24 * 3)) // 3天前
console.log(getDateDiff(Date.now() - 1000 * 60 * 60 * 24 * 30 * 4)) // 四个月前