function ssn_check(fld) {
var sum_1 = 0;
var sum_2 = 0;
var at=0;
var juminno= fld;
sum_1 = (juminno.charAt(0)*2)+
(juminno.charAt(1)*3)+
(juminno.charAt(2)*4)+
(juminno.charAt(3)*5)+
(juminno.charAt(4)*6)+
(juminno.charAt(5)*7)+
(juminno.charAt(6)*8)+
(juminno.charAt(7)*9)+
(juminno.charAt(8)*2)+
(juminno.charAt(9)*3)+
(juminno.charAt(10)*4)+
(juminno.charAt(11)*5);
sum_2=sum_1 % 11;
if (sum_2 == 0)
at = 10;
else
{
if (sum_2 == 1)
at = 11;
else
at = sum_2;
}
att = 11 - at;
if (juminno.charAt(12) != att ||
juminno.substr(2,2) < '01' ||
juminno.substr(2,2) > '12' ||
juminno.substr(4,2) < '01' ||
juminno.substr(4,2) > '31' ||
juminno.charAt(6) > 4)
{
return false;
}
else {
return true;
}
}
function fwrite_check() {
var f = document.fwrite;
var ssnpattern = /(^[0-9]{13}$)/;
var ssn = f.ssn1.value + f.ssn2.value;
var hak = ssnpattern.test(ssn);
if (!hak) {
alert("주민등록번호를 13자리 숫자로 입력하십시오.");
f.ssn1.focus();
return false;
}
var ssn_checked = ssn_check(ssn);
if (!ssn_checked) {
alert("올바른 주민등록번호가 아닙니다.");
f.ssn1.focus();
return false;
}
f.action = 'sub04_proc.php';
f.submit();
}
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