根据身份证计算年龄

function getIdCardInfo(id) {
  if (!/^\d{18}$/.test(id)) {
    console.log('身份证格式不正确')
      return
  }

  // 提取出生年月日
  const birthDateStr = id.substring(6, 14)
  const birthYear = parseInt(birthDateStr.substring(0, 4), 10)
  const birthMonth = parseInt(birthDateStr.substring(4, 6), 10)
  const birthDay = parseInt(birthDateStr.substring(6, 8), 10)

  // 创建出生日期对象
  const birthDate = new Date(birthYear, birthMonth - 1, birthDay)

  // 计算年龄
  const today = new Date()
  let age = today.getFullYear() - birthYear
  const month = today.getMonth() + 1 // 获取当前月份，月份从0开始
  if (month < birthMonth || (month === birthMonth && today.getDate() < birthDay)) {
    age-- // 如果当前月份小于出生月份，或者日期未到，则年龄减1
  }

  // 返回出生日期和年龄
  return {
    birthDate: birthDate,
    age: age
  }
}