//HTML id identity_card input ， id ipmessage
<script>
//
$(document).ready(function(){
$("#identity_card").change(function(){
var idcard =$(this).val();
checkDate(idcard );
});
});
//
function checkDate( idcard ){
var socialNo = idcard;
if(socialNo == "")
{
$('#ipmessage').html(' , 15 18 ');
alert(" !");
return (false);
}
if (socialNo.length != 15 && socialNo.length != 18)
{
$('#ipmessage').html(' , 15 18 ');
alert(" !");
return (false);
}
var area={11:" ",12:" ",13:" ",14:" ",15:" ",21:" ",22:" ",23:" ",31:" ",32:" ",33:" ",34:" ",35:" ",36:" ",37:" ",41:" ",42:" ",43:" ",44:" ",45:" ",46:" ",50:" ",51:" ",52:" ",53:" ",54:" ",61:" ",62:" ",63:" ",64:" ",65:" ",71:" ",81:" ",82:" ",91:" "};
if(area[parseInt(socialNo.substr(0,2))]==null) {
$('#ipmessage').html(' , 15 18 ');
alert(" ( )!");
return (false);
}
if (socialNo.length == 15)
{
pattern= /^\d{15}$/;
if (pattern.exec(socialNo)==null){
$('#ipmessage').html(' , 15 18 ');
alert("15 ！");
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(' , 15 18 ');
alert(' !');
return false;
}
break;
case '04':
case '06':
case '09':
case '11':
if(day>30) {
$('#ipmessage').html(' , 15 18 ');
alert(' !');
return false;
}
break;
case '02':
if((birth % 4 == 0 && birth % 100 != 0) || birth % 400 == 0) {
if(day>29) {
$('#ipmessage').html(' , 15 18 ');
alert(' !');
return false;
}
} else {
if(day>28) {
$('#ipmessage').html(' , 15 18 ');
alert(' !');
return false;
}
}
break;
default:
$('#ipmessage').html(' , 15 18 ');
alert(' !');
return false;
}
var nowYear = new Date().getYear();
if(nowYear - parseInt(birth)<15 || nowYear - parseInt(birth)>100) {
$('#ipmessage').html(' , 15 18 ');
alert(' !');
return false;
}
$('#ipmessage').html(' ！');
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(' , 15 18 ');
alert(" !");
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(' , 15 18 ');
alert(" !");
return (false);
}
else
{
lSum += ( socialNo.charAt(17) - '0' ) * Wi[17];
}
if ( (lSum % 11) == 1 )
{
$('#ipmessage').html(' ！');
return true;
}
else
{
$('#ipmessage').html(' , 15 18 ');
alert(" !");
return (false);
}
}
</script>