身份证号码有效性验证，介绍下几个函数。
function isIDCard(idcard) { idcard = idcard.toUpperCase(); // 对身份证号码做处理 var ereg; var Y, JYM; var S, M; /*基本校验*/ //if (string.isnullOrempty(idcard)) return false; var idcard_Array = new array(); idcard_array = idcard.split(""); /*身份号码位数及格式检验*/ switch (idcard.length) { case 15: if ((parseInt(idcard.substr(6, 2)) + 1900) % 4 == 0 || ((parseint(idcard.substr(6, 2)) + 1900) % 100 == 0 && (parseInt(idcard.substr(6, 2)) + 1900) % 4 == 0)) { ereg = /^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$/; //测试出生日期的合法性 } else { ereg = /^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$/; //测试出生日期的合法性 } if (ereg.test(idcard)) { return true; } else { return false; } break; case 18: //18位身份号码检测 //出生日期的合法性检查 //闰年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9])) //平年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8])) if (parseInt(idcard.substr(6, 4)) % 4 == 0 || (parseInt(idcard.substr(6, 4)) % 100 == 0 && parseInt(idcard.substr(6, 4)) % 4 == 0)) { ereg = /^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}[0-9XxAa]$/; //闰年出生日期的合法性正则表达式 } else { ereg = /^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9XxAa]$/; //平年出生日期的合法性正则表达式 } if (ereg.test(idcard)) {//测试出生日期的合法性 //计算校验位 S = (parseInt(idcard_array[0]) + parseInt(idcard_array[10])) * 7 + (parseInt(idcard_array[1]) + parseInt(idcard_array[11])) * 9 + (parseInt(idcard_array[2]) + parseInt(idcard_array[12])) * 10 + (parseInt(idcard_array[3]) + parseInt(idcard_array[13])) * 5 + (parseInt(idcard_array[4]) + parseInt(idcard_array[14])) * 8 + (parseInt(idcard_array[5]) + parseInt(idcard_array[15])) * 4 + (parseInt(idcard_array[6]) + parseInt(idcard_array[16])) * 2 + parseInt(idcard_array[7]) * 1 + parseInt(idcard_array[8]) * 6 + parseInt(idcard_array[9]) * 3; Y = S % 11; M = "F"; JYM = "10X98765432"; M = JYM.substr(Y, 1); /*判断校验位*/ if (M == idcard_array[17]) { /*检测ID的校验位false;*/ return true; } else if (idcard_array[17] == 'A') {//A结尾不校验规则 return true; /*检测ID的校验位false;*/ } else { return false; } } else { return false; } break; default: return false; } }
从身份证号码中获取相关信息，比如生日，省：
javascript 代码:
function checkID(ID) {
if(typeof ID !== 'String') return '非法字符串';
var city = {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"};
var birthDAy = ID.substr(6, 4) + '/' + Number(ID.substr(10, 2)) + '/' + Number(ID.substr(12, 2));
var d = new date(birthday);
var newBirthday = d.getFullYear() + '/' + Number(d.getMonth() + 1) + '/' + Number(d.getDate());
var currenttime = new Date().getTime();
var time = d.getTime();
var arrInt = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
var arrCh = ['1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'];
var sum = 0, i, residue;
if(!/^\d{17}(\d|x)$/i.test(ID)) return '非法身份证';
if(city[ID.substr(0,2)] === undefined) return "非法地区";
if(time >= currentTime || birthday !== newBirthday) return '非法生日';
for(i=0; i<17; i++) {
sum += ID.substr(i, 1) * arrInt[i];
}
residue = arrCh[sum % 11];
if (residue !== ID.substr(17, 1)) return '非法身份证哦';
return city[ID.substr(0,2)]+","+birthday+","+(ID.substr(16,1)%2?" 男":"女")
}验证香港身份证的格式或真实性：
JavaScript 代码:
function IsHKID(str) {
var strValidchars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
// basic check length
if (str.length < 8)
return false;
// handling bracket
if (str.charAt(str.length-3) == '(' && str.charAt(str.length-1) == ')')
str = str.substring(0, str.length - 3) + str.charAt(str.length -2);
// convert to upper case
str = str.toUpperCase();
// regular Expression to check pattern and split
var hkidPat = /^([A-Z]{1,2})([0-9]{6})([A0-9])$/;
var matchArray = str.match(hkidPat);
// not match, return false
if (matchArray == Null)
return false;
// the character part, numeric part and check digit part
var charPart = matchArray[1];
var numPart = matchArray[2];
var checkDiGit = matchArray[3];
// calculate the checksum for character part
var checkSum = 0;
if (charPart.length == 2) {
checkSum += 9 * (10 + strValidChars.indexof(charPart.charAt(0)));
checkSum += 8 * (10 + strValidChars.indexOf(charPart.charAt(1)));
} else {
checkSum += 9 * 36;
checkSum += 8 * (10 + strValidChars.indexOf(charPart));
}
// calculate the checksum for numeric part
for (var i = 0, j = 7; i < numPart.length; i++, j--)
checkSum += j * numPart.charAt(i);
// verify the check digit
var remAIning = checkSum % 11;
var verify = remaining == 0 ? 0 : 11 - remaining;
return verify == checkDigit || (verify == 10 && checkDigit == 'A');
}在网上找了很久都没合意的验证方式，最后通过google找到一个国外写的JS验证，发现可以使用。
上面那段验证的很精密，包含身份证真实性的校验，如果只是想验证输入的香港身份证格式，请使用下面的这段js。
Javascript 代码:
function IsHKID(str) {
var strValidChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
// basic check length
if (str.length < 8)
return false;
// handling bracket
if (str.charAt(str.length-3) == '(' && str.charAt(str.length-1) == ')')
str = str.substring(0, str.length - 3) + str.charAt(str.length -2);
// convert to upper case
str = str.toUpperCase();
// regular expression to check pattern and split
var hkidPat = /^([A-Z]{1,2})([0-9]{6})([A0-9])$/;
var matchArray = str.match(hkidPat);
// not match, return false
if (matchArray == null)
return false;
return true;
}港澳居民来往内地通行证号码目前好像没有好的办法验证，这里提供一个简单的正则：
/^([A-Z]\d{6,10}(\(\w{1}\))?)$/
网友评论文明上网理性发言 已有0人参与
发表评论: