JS can distinguish province ID card verification code

JS can distinguish province ID card verification code

<title> ID Number Verification </title>
<script type= "text/web Effects" >
var vcity={11: "Beijing", 12: "Tianjin", 13: "Hebei", 14: "Shanxi", 15: "Inner Mongolia",
21: "Liaoning", 22: "Jilin", 23: "Heilongjiang", 31: "Shanghai", 32: "Jiangsu",
33: "Zhejiang", 34: "Anhui", 35: "Fujian", 36: "Jiangxi", 37: "Shandong", 41: "Henan",
42: "Hubei", 43: "Hunan", 44: "Guangdong", 45: "Guangxi", 46: "Hainan", 50: "Chongqing",
51: "Sichuan", 52: "Guizhou", 53: "Yunnan", 54: "Tibet", 61: "Shaanxi", 62: "Gansu",
63: "Qinghai", 64: "Ningxia", 65: "Xinjiang", 71: "Taiwan", 81: "Hong Kong", 82: "Macao", 91: "Foreign"
};

Checktheform = function ()
{
var card = document.getElementById (' card_no '). Value;
is empty
if (Card = = = = ")
{
Alert (' Please enter the ID number, the ID number cannot be empty ');
document.getElementById (' Card_no '). Focus;
return false;
}
Checksum length, type
if (Iscardno (card) = = False)
{
Alert (' The ID number you entered is incorrect, please re-enter ');
document.getElementById (' Card_no '). Focus;
return false;
}
Check the provinces
if (checkprovince (card) = = False)
{
Alert (' The ID number you entered is incorrect, please re-enter ');
document.getElementById (' Card_no '). Focus;
return false;
}
Verify Birthday
if (checkbirthday (card) = = False)
{
Alert (' The ID number you entered is not a valid birthday, please re-enter ');
document.getElementById (' Card_no '). focus ();
return false;
}
Detection of Test bit
if (checkparity (card) = = False)
{
Alert (' Your ID check bit is incorrect, please re-enter ');
document.getElementById (' Card_no '). focus ();
return false;
}
Alert (' OK ');
return true;
};

Check if the number is compliant, including length, type
Iscardno = function (card)
{
The ID number is 15 digits or 18 digits, 15 digits are all digits, 18 digits, the first 17 digits, and the last is a check digit, possibly a number or a character X
var reg =/(^d{15}$) | (^d{17} (d| X) $)/;
if (reg.test (card) = = False)
{
return false;
}

return true;
};

Take ID card Two, check the province
Checkprovince = function (card)
{
var province = Card.substr (0,2);
if (vcity[province] = = undefined)
{
return false;
}
return true;
};

Check if birthdays are correct
Checkbirthday = function (card)
{
var len = card.length;
ID 15, the order for the province (3) city (3-bit) year (2-bit) month (2-bit) (2-bit) (3-digit) check digit
if (len = = ' 15 ')
{
var re_fifteen =/^ (D{6}) (D{2}) (D{2}) (d{2}) d{3;
var arr_data = Card.match (Re_fifteen);
var year = arr_data[2];
var month = arr_data[3];
var day = arr_data[4];
var birthday = new Date (' +year+ '/' +month+ '/' +day);
Return Verifybirthday (' +year,month,day,birthday ');
}
ID 18, the order for the province (3-bit) City (3-bit) year (4-bit) month (2-bit) (2-bit) check bit (4 bit), the check digit end may be X
if (len = = ' 18 ')
{
var re_eighteen =/^ (D{6}) (D{4}) (D{2}) (D{2}) (D{3}) ([0-9]| X) $/;
var arr_data = Card.match (Re_eighteen);
var year = arr_data[2];
var month = arr_data[3];
var day = arr_data[4];
var birthday = new Date (year+ '/' +month+ '/' +day);
Return Verifybirthday (Year,month,day,birthday);
}
return false;
};

Check Date
Verifybirthday = function (year,month,day,birthday)
{
var now = new Date ();
var now_year = Now.getfullyear ();
Is it reasonable to date
if (birthday.getfullyear () = = Year && (birthday.getmonth () + 1) = = Month && birthday.getdate () = = day)
{
Determine the range of year (between 3 and 100 years old)
var time = now_year-year;
if (Time >= 3 && time <= 100)
{
return true;
}
return false;
}
return false;
};

Check bit detection
checkparity = function (card)
{
15-bit ext. 18-bit
Card = Changefivteentoeighteen (card);
var len = card.length;
if (len = = ' 18 ')
{
var arrint = new Array (7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
var arrch = new Array (' 1 ', ' 0 ', ' X ', ' 9 ', ' 8 ', ' 7 ', ' 6 ', ' 5 ', ' 4 ', ' 3 ', ' 2 ');
var cardtemp = 0, I, valnum;
for (i = 0; i < i + +)
{
Cardtemp + + CARD.SUBSTR (i, 1) * arrint[i];
}
Valnum = arrch[cardtemp% 11];
if (Valnum = = Card.substr (17, 1))
{
return true;
}
return false;
}
return false;
};

15-digit ext. 18 ID Number
Changefivteentoeighteen = function (card)
{
if (card.length = ' 15 ')
{
var arrint = new Array (7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
var arrch = new Array (' 1 ', ' 0 ', ' X ', ' 9 ', ' 8 ', ' 7 ', ' 6 ', ' 5 ', ' 4 ', ' 3 ', ' 2 ');
var cardtemp = 0, I;
Card = CARD.SUBSTR (0, 6) + ' n ' + card.substr (6, card.length-6);
for (i = 0; i < i + +)
{
Cardtemp + + CARD.SUBSTR (i, 1) * arrint[i];
}
Card + + arrch[cardtemp% 11];
return card;
}
return card;
}

</script>

<form name= "Form1" method= "Post" action= "" >
<label> ID Number
<input name= ' card_no ' type= ' text ' id= ' card_no ' onblur= ' (); ' />
</label>
<label>
<input type= "Submit" name= "Submission" value= "submitted" >
</label>
</form>