JS 计算两个时间戳相差年月日时分秒

// JS 计算两个时间戳相差年月日时分秒
calculateDiffTime(startTime, endTime, type) {
  var runTime = parseInt(endTime - startTime)
  var year = Math.floor(runTime / 86400 / 365)
  runTime = runTime % (86400 * 365)
  var month = Math.floor(runTime / 86400 / 30)
  runTime = runTime % (86400 * 30)
  var day = Math.floor(runTime / 86400)
  runTime = runTime % 86400
  var hour = Math.floor(runTime / 3600)
  runTime = runTime % 3600
  var minute = Math.floor(runTime / 60)
  runTime = runTime % 60
  var second = runTime
  if (type === 1) { // 返回相差年数
    return year + '年'
  } else if (type === 2) { // 返回相差年数月数
    return year + '年' + month + '月'
  } else if (type === 3) { // 返回相差年数月数天数
    return year + '年' + month + '月' + day + '日'
  } else { // 返回相差年数月数天数时分秒
    return year + '年' + month + '月' + day + '日' + hour + '时' + minute + '分' + second + '秒'
  }
},