之前我们前端对身份证的校验,都是用的正则校验
legalTex = /^\d{6}(18|19|20)\d{2}(0\d|10|11|12)([0-2]\d|30|31)\d{3}(\d|X|x)$/ 但是这个正则的含义
仅仅表示身份证号码为15位或者18位,15位时全为数字,18位前17位为数字,最后一位是校验位,可能为数字或字符X
这样的校验是不精确的,你随便改个数字,校验都可通过
如下是身份证的精确校验方法,百度搜索的话内容都差不多,我对其做了如下封装:
1.新建一个js文件,内容如下
const validateIdent = {
aIdentityCode_City: { // 城市代码列表
11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "内蒙古", 21: "辽宁", 22: "吉林",
23: "黑龙江 ", 31: "上海", 32: "江苏", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西",
37: "山东", 41: "河南", 42: "湖北 ", 43: "湖南", 44: "广东", 45: "广西", 46: "海南",
50: "重庆", 51: "四川", 52: "贵州", 53: "云南", 54: "西藏 ", 61: "陕西", 62: "甘肃",
63: "青海", 64: "宁夏", 65: "新疆", 71: "台湾", 81: "香港", 82: "澳门", 91: "国外 "
},
IdentityCode_isCardNo(card) {//检查号码是否符合规范,包括长度,类型
var reg = /(^\d{15}$)|(^\d{17}(\d|X)$)/; //身份证号码为15位或者18位,15位时全为数字,18位前17位为数字,最后一位是校验位,可能为数字或字符X
if (reg.test(card) === false) {
return false;
}
return true;
},
IdentityCode_checkProvince(card) { //取身份证前两位,校验省份
var province = card.substr(0, 2);
if (validateIdent.aIdentityCode_City[province] == undefined) {
return false;
}
return true;
},
IdentityCode_checkBirthday(card) { //检查生日是否正确,15位以'19'年份来进行补齐。
var len = card.length;
//身份证15位时,次序为省(3位)市(3位)年(2位)月(2位)日(2位)校验位(3位),皆为数字
if (len == '15') {
var re_fifteen = /^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/;
var arr_data = card.match(re_fifteen); // 正则取号码内所含出年月日数据
var year = arr_data[2];
var month = arr_data[3];
var day = arr_data[4];
var birthday = new Date('19' + year + '/' + month + '/' + day);
return validateIdent.IdentityCode_verifyBirthday('19' + year, month, day, birthday);
}
//身份证18位时,次序为省(3位)市(3位)年(4位)月(2位)日(2位)校验位(4位),校验位末尾可能为X
if (len == '18') {
var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/;
var arr_data = card.match(re_eighteen); // 正则取号码内所含出年月日数据
var year = arr_data[2];
var month = arr_data[3];
var day = arr_data[4];
var birthday = new Date(year + '/' + month + '/' + day);
return validateIdent.IdentityCode_verifyBirthday(year, month, day, birthday);
}
return false;
},
IdentityCode_verifyBirthday(year, month, day, birthday) {//校验日期 ,15位以'19'年份来进行补齐。
var now = new Date();
var now_year = now.getFullYear();
//年月日是否合理
if (birthday.getFullYear() == year
&& (birthday.getMonth() + 1) == month
&& birthday.getDate() == day) {
//判断年份的范围(3岁到150岁之间)
var time = now_year - year;
if (time >= 3 && time <= 150) {
return true;
}
return false;
}
return false;
},
IdentityCode_checkParity(card) { //校验位的检测
card = validateIdent.IdentityCode_changeFivteenToEighteen(card); // 15位转18位
var len = card.length;
if (len == '18') {
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 cardTemp = 0, i, valnum;
for (i = 0; i < 17; i++) {
cardTemp += card.substr(i, 1) * arrInt[i];
}
valnum = arrCh[cardTemp % 11];
if (valnum == card.substr(17, 1)) {
return true;
}
return false;
}
return false;
},
IdentityCode_changeFivteenToEighteen(card) { //15位转18位身份证号
if (card.length == '15') {
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 cardTemp = 0, i;
card = card.substr(0, 6) + '19' + card.substr(6, card.length - 6);
for (i = 0; i < 17; i++) {
cardTemp += card.substr(i, 1) * arrInt[i];
}
card += arrCh[cardTemp % 11];
return card;
}
return card;
},
IdentityCodeValid(card) {// 身份证号码检验主入口
let pass = true;
let sex = ''
//是否为空
if (pass && card === '')
pass = false;
//校验长度,类型
if (pass && validateIdent.IdentityCode_isCardNo(card) === false)
pass = false;
//检查省份
if (pass && validateIdent.IdentityCode_checkProvince(card) === false)
pass = false;
//校验生日
if (pass && validateIdent.IdentityCode_checkBirthday(card) === false)
pass = false;
//检验位的检测
if (pass && validateIdent.IdentityCode_checkParity(card) === false)
pass = false;
if (pass) {
var iCard = validateIdent.IdentityCode_changeFivteenToEighteen(card);
if (parseInt(iCard.charAt(16)) % 2 == 0) {
sex = "0"; // 女生
} else {
sex = "1"; // 男生
}
return true
} else {
return false
}
}
}
export default validateIdent.IdentityCodeValid //导出
2.使用
import IdentityCodeValid from '@/utils/checkIdent'
let ident = '42118199902106320' //假身份证
let data = ident.toUpperCase() //转换成大写
IdentityCodeValid( data )//得到 false
let realData = '420102199003078776' //真身份证
let data1 = realData .toUpperCase()
IdentityCodeValid( data1 ) //得到true
这样,一个精确校验的方法就完成了,是不是很容易呢!
链接:https://www.jianshu.com/p/1ccc2cdf18dc