function checkCardId(socialNo) {
if (socialNo == “”) {
alert(“输入身份证号码不能为空!”);
return (false);
}
if (socialNo.length != 15 && socialNo.length != 18) {
alert(“输入身份证号码格式不正确!”);
return (false);
}
var area = { 11: “北京”, 12: “天津”, 13: “河北”, 14: “山西”, 15: “内蒙古”, 21: “辽宁”, 22: “吉林”, 23: “黑龙江”, 31: “上海”, 32: “江苏”, 33: “浙江”, 34: “安徽”, 35: “福建”, 36: “江西”, 37: “山东”, 41: “河南”, 42: “湖北”, 43: “湖南”, 44: “广东”, 45: “广西”, 46: “海南”, 50: “重庆”, 51: “四川”, 52: “贵州”, 53: “云南”, 54: “西藏”, 61: “陕西”, 62: “甘肃”, 63: “青海”, 64: “宁夏”, 65: “新疆”, 71: “台湾”, 81: “香港”, 82: “澳门”, 91: “国外” };
if (area[parseInt(socialNo.substr(0, 2))] == null) {
alert(“身份证号码不正确(地区非法)!”);
return (false);
}
if (socialNo.length == 15) {
pattern = /^\d{15}$/;
if (pattern.exec(socialNo) == null) {
alert(“15位身份证号码必须为数字！”);
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) {
alert(‘输入身份证号码不格式正确!’);
return false;
}
break;
case ‘04’:
case ‘06’:
case ‘09’:
case ‘11’:
if (day > 30) {
alert(‘输入身份证号码不格式正确!’);
return false;
}
break;
case ‘02’:
if ((birth % 4 == 0 && birth % 100 != 0) || birth % 400 == 0) {
if (day > 29) {
alert(‘输入身份证号码不格式正确!’);
return false;
}
} else {
if (day > 28) {
alert(‘输入身份证号码不格式正确!’);
return false;
}
}
break;
default:
alert(‘输入身份证号码不格式正确!’);
return false;
}
var nowYear = new Date().getYear();
if (nowYear - parseInt(birth) < 15 || nowYear - parseInt(birth) > 100) {
alert(‘输入身份证号码不格式正确!’);
return false;
}
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’) {
alert(“输入身份证号码格式不正确!”);
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’) {
alert(“输入身份证号码格式不正确!”);
return (false);
}
else {
lSum += (socialNo.charAt(17) - ‘0’) * Wi[17];
}
if ((lSum % 11) == 1) {
return true;
}
else {
alert(“输入身份证号码格式不正确!”);
return (false);
}
}