//The HTML page should have an input field with id identity_card, a place where the id id ipmessage is incorrect or correct
<script>
//Id card verification
$(document).ready(function(){
$("#identity_card").change(function(){
var idcard =$(this).val();
checkDate(idcard );
});
});
//Id card
function checkDate( idcard ){
var socialNo = idcard;
if(socialNo == "")
{
$('#ipmessage').html(' The format of input id number is incorrect , It must be 15 A to 18 Bit id number ');
alert(" Input id number cannot be blank !");
return (false);
}
if (socialNo.length != 15 && socialNo.length != 18)
{
$('#ipmessage').html(' The format of input id number is incorrect , It must be 15 A to 18 Bit id number ');
alert(" The format of input id number is incorrect !");
return (false);
}
var area={11:" Beijing ",12:" tianjin ",13:" hebei ",14:" shanxi ",15:" Inner Mongolia ",21:" liaoning ",22:" Ji Lin ",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:" Macau ",91:" foreign "};
if(area[parseInt(socialNo.substr(0,2))]==null) {
$('#ipmessage').html(' The format of input id number is incorrect , It must be 15 A to 18 Bit id number ');
alert(" The id number is incorrect ( illicit )!");
return (false);
}
if (socialNo.length == 15)
{
pattern= /^d{15}$/;
if (pattern.exec(socialNo)==null){
$('#ipmessage').html(' The format of input id number is incorrect , It must be 15 A to 18 Bit id number ');
alert("15 Bit id number must be number! ");
return (false);
}
var birth = parseInt("19" + socialNo.substr(6,2));
var month = socialNo.substr(8,2);
var day = parseInt(socialNo.substr(10,2));
switch(month) {
case '01':
case '03':
case '05':
case '07':
case '08':
case '10':
case '12':
if(day>31) {
$('#ipmessage').html(' The format of input id number is incorrect , It must be 15 A to 18 Bit id number ');
alert(' Input id number is not in the correct format !');
return false;
}
break;
case '04':
case '06':
case '09':
case '11':
if(day>30) {
$('#ipmessage').html(' The format of input id number is incorrect , It must be 15 A to 18 Bit id number ');
alert(' Input id number is not in the correct format !');
return false;
}
break;
case '02':
if((birth % 4 == 0 && birth % 100 != 0) || birth % 400 == 0) {
if(day>29) {
$('#ipmessage').html(' The format of input id number is incorrect , It must be 15 A to 18 Bit id number ');
alert(' Input id number is not in the correct format !');
return false;
}
} else {
if(day>28) {
$('#ipmessage').html(' The format of input id number is incorrect , It must be 15 A to 18 Bit id number ');
alert(' Input id number is not in the correct format !');
return false;
}
}
break;
default:
$('#ipmessage').html(' The format of input id number is incorrect , It must be 15 A to 18 Bit id number ');
alert(' Input id number is not in the correct format !');
return false;
}
var nowYear = new Date().getYear();
if(nowYear - parseInt(birth)<15 || nowYear - parseInt(birth)>100) {
$('#ipmessage').html(' The format of input id number is incorrect , It must be 15 A to 18 Bit id number ');
alert(' Input id number is not in the correct format !');
return false;
}
$('#ipmessage').html(' Through! ');
return (true);
}
var Wi = new Array(
7,9,10,5,8,4,2,1,6,
3,7,9,10,5,8,4,2,1
);
var lSum = 0;
var nNum = 0;
var nCheckSum = 0;
for (i = 0; i < 17; ++i)
{
if ( socialNo.charAt(i) < '0' || socialNo.charAt(i) > '9' )
{
$('#ipmessage').html(' The format of input id number is incorrect , It must be 15 A to 18 Bit id number ');
alert(" The format of input id number is incorrect !");
return (false);
}
else
{
nNum = socialNo.charAt(i) - '0';
}
lSum += nNum * Wi[i];
}
if( socialNo.charAt(17) == 'X' || socialNo.charAt(17) == 'x')
{
lSum += 10*Wi[17];
}
else if ( socialNo.charAt(17) < '0' || socialNo.charAt(17) > '9' )
{
$('#ipmessage').html(' The format of input id number is incorrect , It must be 15 A to 18 Bit id number ');
alert(" The format of input id number is incorrect !");
return (false);
}
else
{
lSum += ( socialNo.charAt(17) - '0' ) * Wi[17];
}
if ( (lSum % 11) == 1 )
{
$('#ipmessage').html(' Through! ');
return true;
}
else
{
$('#ipmessage').html(' The format of input id number is incorrect , It must be 15 A to 18 Bit id number ');
alert(" The format of input id number is incorrect !");
return (false);
}
}
</script>