身份证号码有效性检测算法 ( js版 转 C#版 )
C#版
#region 检测是否是正确的身份证
/// <summary>
/// 身份证验证
/// </summary>
/// <param name="num"></param>
/// <returns></returns>
public static bool isIdCardNo(string cardid)
{
string num = cardid.ToUpper();
int[] factorArr = new int[] { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1 };
char[] parityBit = new char[] { '1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2' };
char[] varArray = new char[18];
var lngProduct = 0;
int intCheckDigit = 0;
var intStrLen = num.Length;
var idNumber = num;
// initialize
if ((intStrLen != 15) && (intStrLen != 18))
{
return false;
}
// check and set value
for (int i = 0; i < intStrLen; i++)
{
varArray[i] = (char)Convert.ToInt32(idNumber[i]);
if (((varArray[i] - 48) < 0 || (varArray[i] - 48) > 9) && (i != 17))
{
return false;
}
else if (i < 17)
{
varArray[i] = (char)((varArray[i] - 48) * factorArr[i]);
}
}
if (intStrLen == 18)
{
//check date
var date8 = idNumber.Substring(6, 8);
if (isDate8(date8) == false)
{
return false;
}
// calculate the sum of the products
for (int i = 0; i < 17; i++)
{
lngProduct = lngProduct + varArray[i];
}
// calculate the check digit
intCheckDigit = parityBit[lngProduct % 11];
// check last digit
if (varArray[17] != intCheckDigit)
{
return false;
}
}
else
{ //length is 15
//check date
var date6 = idNumber.Substring(6, 6);
if (isDate6(date6) == false)
{
return false;
}
}
return true;
}
/// <summary>
/// 15位身份证日期检测--年/月--6位
/// </summary>
/// <param name="sDate"></param>
/// <returns></returns>
static bool isDate6(string sDate)
{
if (!Regex.IsMatch(sDate, "^[0-9]{6}$"))
{
return false;
}
int year, month;
year = Convert.ToInt32(sDate.Substring(0, 4));
month = Convert.ToInt32(sDate.Substring(4, 2));
if (year < 1700 || year > 2500) return false;
if (month < 1 || month > 12) return false;
return true;
}
/// <summary>
/// 18位身份证日期检测--年/月/日--8位
/// </summary>
/// <param name="sDate"></param>
/// <returns></returns>
static bool isDate8(string sDate)
{
if (!Regex.IsMatch(sDate, "^[0-9]{8}$"))
{
return false;
}
int year, month, day;
year = Convert.ToInt32(sDate.Substring(0, 4));
month = Convert.ToInt32(sDate.Substring(4, 2));
day = Convert.ToInt32(sDate.Substring(6, 2));
int[] iaMonthDays = new int[] { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
if (year < 1700 || year > 2500) return false;
if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)) iaMonthDays[1] = 29;
if (month < 1 || month > 12) return false;
if (day < 1 || day > iaMonthDays[month - 1]) return false;
return true;
}
#endregion
二、JS版
function isIdCardNo(num) {
var factorArr = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1);
var parityBit = new Array("1", "0", "X", "9", "8", "7", "6", "5", "4", "3", "2");
var varArray = new Array();
var intValue;
var lngProduct = 0;
var intCheckDigit;
var intStrLen = num.length;
var idNumber = num;
// initialize
if ((intStrLen != 15) && (intStrLen != 18)) {
return false;
}
// check and set value
for (i = 0; i < intStrLen; i++) {
varArray[i] = idNumber.charAt(i);
if ((varArray[i] < '0' || varArray[i] > '9') && (i != 17)) {
return false;
} else if (i < 17) {
varArray[i] = varArray[i] * factorArr[i];
}
}
if (intStrLen == 18) {
//check date
var date8 = idNumber.substring(6, 14);
if (isDate8(date8) == false) {
return false;
}
// calculate the sum of the products
for (i = 0; i < 17; i++) {
lngProduct = lngProduct + varArray[i];
}
// calculate the check digit
intCheckDigit = parityBit[lngProduct % 11];
// check last digit
if (varArray[17] != intCheckDigit) {
return false;
}
}
else { //length is 15
//check date
var date6 = idNumber.substring(6, 12);
if (isDate6(date6) == false) {
return false;
}
}
return true;
}
function isDate6(sDate) {
if (!/^[0-9]{6}$/.test(sDate)) {
return false;
}
var year, month, day;
year = sDate.substring(0, 4);
month = sDate.substring(4, 6);
if (year < 1700 || year > 2500) return false
if (month < 1 || month > 12) return false
return true
}
/**
* 判断是否为“YYYYMMDD”式的时期
*
*/
function isDate8(sDate) {
if (!/^[0-9]{8}$/.test(sDate)) {
return false;
}
var year, month, day;
year = sDate.substring(0, 4);
month = sDate.substring(4, 6);
day = sDate.substring(6, 8);
var iaMonthDays = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
if (year < 1700 || year > 2500) return false
if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)) iaMonthDays[1] = 29;
if (month < 1 || month > 12) return false
if (day < 1 || day > iaMonthDays[month - 1]) return false
return true
}
