let year;
let month;
let day;
let sex;
let birthday;
let age;

//性别
let idxSex = 1 - str.substr(idxSexStart,1) % 2;
sex = idxSex == '1' ? '女' : '男';
//生日
year = (birthYearSpan == 2 ? '19' : '') + str.substr(6,birthYearSpan);
month = str.substr(6 + birthYearSpan,2);
day = str.substr(8 + birthYearSpan,2);
birthday = year + '-' + month + '-' + day;
//年龄
let monthFloor = (currentMonth < parseInt(month,10) || (currentMonth == parseInt(month,10) && currentDate < parseInt(day,10))) ? 1 : 0;
age = currentYear - parseInt(year,10) - monthFloor;

// console.log("我的出生日期是"+year+"年"+month+"月"+day+"日"+",今年"+age+"岁了"+",性别是"+sex);

if(age >= 18){
return true;
}

return false;
}

// 设置身份证号码，15位或者18位
clsIDCard.prototype.SetCardNo = function(CardNo) {
this.ID15 = '';
this.ID18 = '';
this.Local = '';
CardNo = CardNo.replace(" ","");
var strCardNo;
if (CardNo.length == 18) {
pattern = /^\d{17}(\d|x|X)$/;
if (pattern.exec(CardNo) == null)
return;
strCardNo = CardNo.toUpperCase();
} else {
pattern = /^\d{15}$/;
if (pattern.exec(CardNo) == null)
return;
strCardNo = CardNo.substr(0,6) + '19' + CardNo.substr(6,9)
strCardNo += this.GetVCode(strCardNo);
}
this.Valid = this.CheckValid(strCardNo);
}
// 校验身份证有效性
clsIDCard.prototype.IsValid = function() {
return this.Valid;
}
// 返回生日字符串，格式如下，1981-10-10
clsIDCard.prototype.GetBirthDate = function() {
var BirthDate = '';
if (this.Valid)
BirthDate = this.GetBirthYear() + '-' + this.GetBirthMonth() + '-'

• this.GetBirthDay();
  return BirthDate;
  }
  // 返回生日中的年，格式如下，1981
  clsIDCard.prototype.GetBirthYear = function() {
  var BirthYear = '';
  if (this.Valid)
  BirthYear = this.ID18.substr(6,4);
  return BirthYear;
  }
  // 返回生日中的月，格式如下，10
  clsIDCard.prototype.GetBirthMonth = function() {
  var BirthMonth = '';
  if (this.Valid)
  BirthMonth = this.ID18.substr(10,2);
  if (BirthMonth.charAt(0) == '0')
  BirthMonth = BirthMonth.charAt(1);
  return BirthMonth;
  }
  // 返回生日中的日，格式如下，10
  clsIDCard.prototype.GetBirthDay = function() {
  var BirthDay = '';
  if (this.Valid)
  BirthDay = this.ID18.substr(12,2);
  return BirthDay;
  }

// 返回性别，1：男，0：女
clsIDCard.prototype.GetSex = function() {
var Sex = '';
if (this.Valid)
Sex = this.ID18.charAt(16) % 2;
return Sex;
}

// 返回15位身份证号码
clsIDCard.prototype.Get15 = function() {
var ID15 = '';
if (this.Valid)
ID15 = this.ID15;
return ID15;
}

// 返回18位身份证号码
clsIDCard.prototype.Get18 = function() {
var ID18 = '';
if (this.Valid)
ID18 = this.ID18;
return ID18;
}

// 返回所在省，例如：上海市、浙江省
clsIDCard.prototype.GetLocal = function() {
var Local = '';
if (this.Valid)
Local = this.Local;
return Local;
}

clsIDCard.prototype.GetVCode = function(CardNo17) {
var Wi = new Array(7,9,10,5,8,4,2,1,6,3,7,1);
var Ai = new Array('1','0','X','9','8','7','6','5','4','3','2');
var cardNoSum = 0;
for (var i = 0; i < CardNo17.length; i++)
cardNoSum += CardNo17.charAt(i) * Wi[i];
var seq = cardNoSum % 11;
return Ai[seq];
}

clsIDCard.prototype.CheckValid = function(CardNo18) {
if (this.GetVCode(CardNo18.substr(0,17)) != CardNo18.charAt(17))
return false;
if (!this.IsDate(CardNo18.substr(6,8)))
return false;
var aCity = {
11 : "北京",12 : "天津",13 : "河北",14 : "山西",15 : "内蒙古",21 : "辽宁",22 : "吉林",23 : "黑龙江 ",31 : "上海",32 : "江苏",33 : "浙江",34 : "安徽",35 : "福建",36 : "江西",37 : "山东",41 : "河南",42 : "湖北 ",43 : "湖南",44 : "广东",45 : "广西",46 : "海南",50 : "重庆",51 : "四川",52 : "贵州",53 : "云南",54 : "西藏 ",61 : "陕西",62 : "甘肃",63 : "青海",64 : "宁夏",65 : "新疆",71 : "台湾",81 : "香港",82 : "澳门",91 : "国外"
};
if (aCity[parseInt(CardNo18.substr(0,2))] == null)
return false;
this.ID18 = CardNo18;
this.ID15 = CardNo18.substr(0,6) + CardNo18.substr(8,9);
this.Local = aCity[parseInt(CardNo18.substr(0,2))];
return true;
}

clsIDCard.prototype.IsDate = function(strDate) {
var r = strDate.match(/^(\d{1,4})(\d{1,2})(\d{1,2})$/);
if (r == null)
return false;
var d = new Date(r[1],r[2] - 1,r[3]);
return (d.getFullYear() == r[1] && (d.getMonth() + 1) == r[2] && d
.getDate() == r[3]);
}