身份证、银行卡 js正则校验

校验身份证号

function checkIdcard(personnumber) {

personnumber = personnumber.toUpperCase();
//身份证号码为15位或者18位，15位时全为数字，18位前17位为数字，最后一位是校验位，可能为数字或字符X。
if (!(/(^\d{15}$)|(^\d{17}([0-9]|X)$)/.test(personnumber))) {
return false;
}
//校验位按照ISO 7064:1983.MOD 11-2的规定生成，X可以认为是数字10。
//下面分别分析出生日期和校验位
var len, re;
len = personnumber.length;
if (len == 15) {
re = new RegExp(/^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/);
var arrSplit = personnumber.match(re);

//检查生日日期是否正确
var dtmBirth = new Date('19' + arrSplit[2] + '/' + arrSplit[3] + '/' + arrSplit[4]);
var bGoodDay;
bGoodDay = (dtmBirth.getFullYear() == Number(arrSplit[2])) && ((dtmBirth.getMonth() + 1) == Number(arrSplit[3])) && (dtmBirth.getDate() == Number(arrSplit[4]));
if (!bGoodDay) {
return false;
}
else {
//将15位身份证转成18位
//校验位按照ISO 7064:1983.MOD 11-2的规定生成，X可以认为是数字10。
var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
var nTemp = 0, i;
personnumber = personnumber.substr(0, 6) + '19' + personnumber.substr(6, personnumber.length - 6);
for (i = 0; i < 17; i++) {
nTemp += personnumber.substr(i, 1) * arrInt[i];
}
personnumber += arrCh[nTemp % 11];
return true;
}
}
if (len == 18) {
re = new RegExp(/^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/);
var arrSplit = personnumber.match(re);

//检查生日日期是否正确
var dtmBirth = new Date(arrSplit[2] + "/" + arrSplit[3] + "/" + arrSplit[4]);
var bGoodDay;
bGoodDay = (dtmBirth.getFullYear() == Number(arrSplit[2])) && ((dtmBirth.getMonth() + 1) == Number(arrSplit[3])) && (dtmBirth.getDate() == Number(arrSplit[4]));
if (!bGoodDay) {
return false;
} else {
//检验18位身份证的校验码是否正确。
//校验位按照ISO 7064:1983.MOD 11-2的规定生成，X可以认为是数字10。
var valnum;
var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
var nTemp = 0, i;
for (i = 0; i < 17; i++) {
nTemp += personnumber.substr(i, 1) * arrInt[i];
}
valnum = arrCh[nTemp % 11];
if (valnum != personnumber.substr(17, 1)) {
return false;
}
return true;
}
}
return false;
}

通过身份证号获取年龄

function getAge(identityCard) {

var len = (identityCard + "").length;
if (len == 0) {
return 0;
} else {
if ((len != 15) && (len != 18))//身份证号码只能为15位或18位其它不合法
{
return 0;
}
}
var strBirthday = "";
if (len == 18)//处理18位的身份证号码从号码中得到生日和性别代码
{
strBirthday = identityCard.substr(6, 4) + "/" + identityCard.substr(10, 2) + "/" + identityCard.substr(12, 2);
}
if (len == 15) {
strBirthday = "19" + identityCard.substr(6, 2) + "/" + identityCard.substr(8, 2) + "/" + identityCard.substr(10, 2);
}
//时间字符串里，必须是“/”
var birthDate = new Date(strBirthday);
var nowDateTime = new Date();
var age = nowDateTime.getFullYear() - birthDate.getFullYear();
//再考虑月、天的因素;.getMonth()获取的是从0开始的，这里进行比较，不需要加1
if (nowDateTime.getMonth() < birthDate.getMonth() || (nowDateTime.getMonth() == birthDate.getMonth() && nowDateTime.getDate() < birthDate.getDate())) {
age--;
}
return age;

}

银行卡正则校验

function checkBankno(bankno) {
var lastNum = bankno.substr(bankno.length - 1, 1);//取出最后一位（与luhm进行比较）
var first15Num = bankno.substr(0, bankno.length - 1);//前15或18位
var newArr = [];

for (var i = first15Num.length - 1; i > -1; i--) { //前15或18位倒序存进数组
newArr.push(first15Num.substr(i, 1));
}

var arrJiShu = []; //奇数位*2的积 <9
var arrJiShu2 = []; //奇数位*2的积 >9
var arrOuShu = []; //偶数位数组
for (var j = 0; j < newArr.length; j++) {
if ((j + 1) % 2 == 1) {//奇数位
if (parseInt(newArr[j]) * 2 < 9)
arrJiShu.push(parseInt(newArr[j]) * 2); else
arrJiShu2.push(parseInt(newArr[j]) * 2);
}
else //偶数位
arrOuShu.push(newArr[j]);
}

var jishu_child1 = [];//奇数位*2 >9 的分割之后的数组个位数
var jishu_child2 = [];//奇数位*2 >9 的分割之后的数组十位数
for (var h = 0; h < arrJiShu2.length; h++) {
jishu_child1.push(parseInt(arrJiShu2[h]) % 10);
jishu_child2.push(parseInt(arrJiShu2[h]) / 10);
}

var sumJiShu = 0; //奇数位*2 < 9 的数组之和
var sumOuShu = 0; //偶数位数组之和
var sumJiShuChild1 = 0; //奇数位*2 >9 的分割之后的数组个位数之和
var sumJiShuChild2 = 0; //奇数位*2 >9 的分割之后的数组十位数之和
var sumTotal = 0;
for (var m = 0; m < arrJiShu.length; m++) {
sumJiShu = sumJiShu + parseInt(arrJiShu[m]);
}
for (var n = 0; n < arrOuShu.length; n++) {
sumOuShu = sumOuShu + parseInt(arrOuShu
);
}
for (var p = 0; p < jishu_child1.length; p++) {
sumJiShuChild1 = sumJiShuChild1 + parseInt(jishu_child1[p]);
sumJiShuChild2 = sumJiShuChild2 + parseInt(jishu_child2[p]);
}
//计算总和
sumTotal = parseInt(sumJiShu) + parseInt(sumOuShu) + parseInt(sumJiShuChild1) + parseInt(sumJiShuChild2);
//计算Luhm值
var k = parseInt(sumTotal) % 10 == 0 ? 10 : parseInt(sumTotal) % 10;
var luhm = 10 - k;
if (lastNum == luhm) {
return true;
}
else {
return false;
}
}