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JavaScript ID number Validation instance code

Source: Internet
Author: User
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<!doctype HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/ Xhtml1-transitional.dtd ">
<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 "/>
<title> website special effects ID number validation instance code </title>
<script>
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 error;
var vararray = new Array ();
var intvalue;
var lngproduct = 0;
var intcheckdigit;
var intstrlen = num.length;
var idnumber = num;
Initialize
if ((Intstrlen!=) && (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 (checkdate (date8) = = False)
{
Error = "The date information in the ID card is incorrect!.";
return false;
}
Calculate the sum of the products
for (i=0;i<17;i++)
{
Lngproduct = lngproduct + vararray[i];
}
Calculate the check digit
Intcheckdigit = 12-lngproduct% 11;
Switch (intcheckdigit)
{
Case 10:
Intcheckdigit = ' x ';
Break
Case 11:
Intcheckdigit = 0;
Break
Case 12:
Intcheckdigit = 1;
Break
}
Check last digit
if (Vararray[17].touppercase ()!= intcheckdigit)
{
return false;
}
}
Else
{//length is 15
Check Date
var date6 = idnumber.substring (6,12);
if (checkdate (date6) = = False)
{
Alert ("ID date information is incorrect!.");
return false;
}
}
return true;
}

function Checkdate (date)
{
return true;
}

function test ()
{
var id = document.getElementById (' id '). value;
alert (ID);
Alert (Isidcardno (ID));
}
</script>

<body>
<tr>
&LT;TD align= "Right" class= "Reg-item" ><span class= "color" >*</span> ID card:</td>
<td><input id= "User_sfz" class= "Input_out" name= "USER_SFZ" type= "text" onfocus= "onfuos (' User_sfz ')" onblur= "Regsfz ()" onmousemove= "This.classname= ' input_move '" Onmouseo tutorial ut= "this.classname= ' input_out '" style= "width:250px ; "/></td>
<td><span id= "SFZ" ></span></td>
</tr>
</body>
Rules of the ID card number "
1, 15-digit ID card number composition:
Ddddddyymmddxxs a total of 15 places, of which:
The DDDDDD is a 6-bit local code, based on which the 6-bit can obtain the location of the ID number.
YY is a 2-bit year code, is the identity card holder of the year of origin.
MM is a 2-bit month code, is the identity card holder's birth month.
DD is a 2-digit date code, which is the birth date of the identity card holder.
These 6 together form the date of birth of the identity card holder.
XX is a 2-bit sequential code, this is a random number.
S is a 1-digit sex code, with odd numbers representing males and even women.

2, 18-digit ID card number composition:
DDDDDDYYYYMMDDXXSP a total of 18 places, of which:
The other parts are the same as the 15-bit. The year code is upgraded from the original 2 to the 4-bit. The last one is a check digit.
The validation rules are:
(1) The weighted summation formula of 17-digit body code
s = SUM (AI * wi), i = 0, ..., 16, first the sum of the first 17 digits
AI: Indicates the ID number value of position I
WI: A weighted factor representing position I
Wi:7 9 10 5 8 4 2 1 6 3 7 9 10 5 8 4-2
(2) Computational model
y = mod (s, 11)
(3) The corresponding check code is obtained through the model
Y:0 1 2 3 4 5 6 7 8 9 10
Check code: 1 0 x 9 8 7 6 5 4 3 2

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
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