身份证校验
身份证校验
function isChinaIDCard(StrNo) {
StrNo = StrNo.toString()
if (StrNo.length == 18) {
var a, b, c
if (!isInteger(StrNo.substr(0, 17))) { return false }
a = parseInt(StrNo.substr(0, 1)) * 7 + parseInt(StrNo.substr(1, 1)) * 9 + parseInt(StrNo.substr(2, 1)) * 10;
a = a + parseInt(StrNo.substr(3, 1)) * 5 + parseInt(StrNo.substr(4, 1)) * 8 + parseInt(StrNo.substr(5, 1)) * 4;
a = a + parseInt(StrNo.substr(6, 1)) * 2 + parseInt(StrNo.substr(7, 1)) * 1 + parseInt(StrNo.substr(8, 1)) * 6;
a = a + parseInt(StrNo.substr(9, 1)) * 3 + parseInt(StrNo.substr(10, 1)) * 7 + parseInt(StrNo.substr(11, 1)) * 9;
a = a + parseInt(StrNo.substr(12, 1)) * 10 + parseInt(StrNo.substr(13, 1)) * 5 + parseInt(StrNo.substr(14, 1)) * 8;
a = a + parseInt(StrNo.substr(15, 1)) * 4 + parseInt(StrNo.substr(16, 1)) * 2;
b = a % 11;
if (b == 2) //最后一位为校验位
{
c = StrNo.substr(17, 1).toUpperCase(); //转为大写X
}
else {
c = parseInt(StrNo.substr(17, 1));
}
switch (b) {
case 0: if (c != 1) { alert("身份证好号码校验位错:最后一位应该为:1"); return false; } break;
case 1: if (c != 0) { alert("身份证好号码校验位错:最后一位应该为:0"); return false; } break;
case 2: if (c != "X") { alert("身份证好号码校验位错:最后一位应该为:X"); return false; } break;
case 3: if (c != 9) { alert("身份证好号码校验位错:最后一位应该为:9"); return false; } break;
case 4: if (c != 8) { alert("身份证好号码校验位错:最后一位应该为:8"); return false; } break;
case 5: if (c != 7) { alert("身份证好号码校验位错:最后一位应该为:7"); return false; } break;
case 6: if (c != 6) { alert("身份证好号码校验位错:最后一位应该为:6"); return false; } break;
case 7: if (c != 5) { alert("身份证好号码校验位错:最后一位应该为:5"); return false; } break;
case 8: if (c != 4) { alert("身份证好号码校验位错:最后一位应该为:4"); return false; } break;
case 9: if (c != 3) { alert("身份证好号码校验位错:最后一位应该为:3"); return false; } break;
case 10: if (c != 2) { alert("身份证好号码校验位错:最后一位应该为:2"); return false }
}
}
else if (StrNo.length == 15) //15位身份证号
{
if (!isInteger(StrNo)) { alert("身份证号码错误,前15位不能含有英文字母！"); return false }
}
else {
alert("输入的身份证号码必须为15位或者18位！");
return false
}
switch (StrNo.length-1) {
case 15:
if (isValidDate("19" + StrNo.substr(6, 2), StrNo.substr(8, 2), StrNo.substr(10, 2)))
{ return true; }
else
{ return false; }
case 18:
if (isValidDate(StrNo.substr(6, 4), StrNo.substr(10, 2), StrNo.substr(12, 2)))
{ return true; }
else
{ return false; }
}
}
function isValidDate(iY, iM, iD) {
var a = new Date(iY, iM, iD);
var y = a.getFullYear();
var m = a.getMonth();
var d = a.getDate();
if (y != iY || m != iM || d != iD) {
window.alert('身份证号码内日期错误！');
return false;
}
return true
}
function isInteger(str) {
if (/[^\d]+$/.test(str)) {
return false;
}
return true;
}
function IDUpdate(StrNo) {
if (!isChinaIDCard(StrNo)) { return false }
if (StrNo.length == 15) {
var a, b, c
StrNo = StrNo.substr(0, 6) + "19" + StrNo.substr(6, 9)
a = parseInt(StrNo.substr(0, 1)) * 7 + parseInt(StrNo.substr(1, 1)) * 9 + parseInt(StrNo.substr(2, 1)) * 10;
a = a + parseInt(StrNo.substr(3, 1)) * 5 + parseInt(StrNo.substr(4, 1)) * 8 + parseInt(StrNo.substr(5, 1)) * 4;
a = a + parseInt(StrNo.substr(6, 1)) * 2 + parseInt(StrNo.substr(7, 1)) * 1 + parseInt(StrNo.substr(8, 1)) * 6;
a = a + parseInt(StrNo.substr(9, 1)) * 3 + parseInt(StrNo.substr(10, 1)) * 7 + parseInt(StrNo.substr(11, 1)) * 9;
a = a + parseInt(StrNo.substr(12, 1)) * 10 + parseInt(StrNo.substr(13, 1)) * 5 + parseInt(StrNo.substr(14, 1)) * 8;
a = a + parseInt(StrNo.substr(15, 1)) * 4 + parseInt(StrNo.substr(16, 1)) * 2;
b = a % 11;
switch (b) {
case 0: { StrNo = StrNo + "1"; } break;
case 1: { StrNo = StrNo + "0"; } break;
case 2: { StrNo = StrNo + "X"; } break;
case 3: { StrNo = StrNo + "9"; } break;
case 4: { StrNo = StrNo + "8"; } break;
case 5: { StrNo = StrNo + "7"; } break;
case 6: { StrNo = StrNo + "6"; } break;
case 7: { StrNo = StrNo + "5"; } break;
case 8: { StrNo = StrNo + "4"; } break;
case 9: { StrNo = StrNo + "3"; } break;
case 10: { StrNo = StrNo + "3"; }
}
}
return StrNo;
}