// 내국인
function ssnCheck(ssn) {
var lastid, li_mod, li_minus, li_last;
var checkValue = 0;
if (ssn.length != 13) return false;
lastid = parseFloat(ssn.substring(12,13));
checkValue += (parseInt(ssn.substring(0,1)) * 2) + (parseInt(ssn.substring(1,2)) * 3)
+ (parseInt(ssn.substring(2,3)) * 4) + (parseInt(ssn.substring(3,4)) * 5)
+ (parseInt(ssn.substring(4,5)) * 6) + (parseInt(ssn.substring(5,6)) * 7)
+ (parseInt(ssn.substring(6,7)) * 8) + (parseInt(ssn.substring(7,8)) * 9)
+ (+parseInt(ssn.substring(8,9)) * 2) + (parseInt(ssn.substring(9,10)) * 3)
+ (parseInt(ssn.substring(10,11)) * 4) + (parseInt(ssn.substring(11,12)) * 5);
li_mod = checkValue % 11;
li_minus = 11 - li_mod;
li_last = li_minus % 10;
if (li_last != lastid) return false;
return true;
}
// 외국인
function isFrgNo(fgnno) {
var sum = 0;
var odd = 0;
buf = new Array(13);
for(i=0; i<13; i++) buf[i] = parseInt(fgnno.charAt(i));
odd = buf[7]*10 + buf[8];
if(odd%2 != 0) return false;
if((buf[11]!=6) && (buf[11]!=7) && (buf[11]!=8) && (buf[11]!=9)) return false;
multipliers = [2,3,4,5,6,7,8,9,2,3,4,5];
for(i=0, sum=0; i<12; i++) sum += (buf[i] *= multipliers[i]);
sum = 11 - (sum%11);
if(sum >= 10) sum -= 10;
sum += 2;
if(sum >= 10) sum -= 10;
if(sum != buf[12]) return false;
return true;
}
<script>
function number_check(){
var f = document.frm;
var ssn1 = f.jumin1.value;
var ssn2 = f.jumin2.value;
var ssn = ssn1 + ssn2;
if(ssn2.substring(0,1) == '1' || ssn2.substring(0,1) == '3' ||
ssn2.substring(0,1) == '2' || ssn2.substring(0,1) == '4') {
// 국내 주민번호 체크
if (ssnCheck(ssn) == false ) {
alert('주민번호를 정확히 입력하십시오.');
f.jumin1.value = '';
f.jumin2.value = '';
f.jumin1.focus();
return;
}
} else {
// 외국인 등록번호 체크
if(isFrgNo(ssn) == false) {
alert( "외국인 등록번호를 정확히 입력하십시오." );
f.jumin1.value = '';
f.jumin2.value = '';
f.jumin1.focus();
return;
}
}
}
</script>}
<form name="frm" onsubmit="return false;">
<input type="text" name="jumin1"> - <input type="password" name="jumin2"> <button onclick="number_check()">체크</button>
</form>
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