前端校验身份证号正则，校验规则省份、年月日，包含15位校验（完整）

const 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'  
};  
const regCity = `(${Reflect.ownKeys(city).join('|')})`;  
//当前日期  
const currentDate = new Date();  
const year = String(currentDate.getFullYear()).split('');  
const month = String(currentDate.getMonth() + 1).split('');  
const day = String(currentDate.getDate()).split('');  
//处理小于10的月份和天数  
if (month.length < 2) {  
month.unshift('0');  
}  
if (day.length < 2) {  
day.unshift('0');  
}  
//校验时间月、日  
const regDay = `(((0[13578]|1[02])([0-2]\\d|3[0-1]))|(02[0-2]\\d)|((0[469]|11)([0-2]\\d|30)))`;  
//校验十五位身份证号  
const reg15 = `(${regCity}\\d{4}\\d{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)\\d{2})`;  
//当前月校验  
const currentYearMonth = `${month[0]}${month[1]}${day[0]==0? `0[1-${day[1]}]`:`([0-${day[0]-1}][1-9])|(${day[0]}[0-${day[1]}])`}`;  
/***当前年其他月份校验*/  
//当前月小于十月份校验  
const min10Month = `0[1-${month[1] - 1}](0[1-9]|[1-2]\\d|3[0-1])`;  
//当前月大于等于十月份校验  
const max10Month = `(0[1-9](0[1-9]|[1-2]\\d|3[0-1]))${month[1]==0? '':`|(1[0-${month[1] - 1}](0[1-9]|[1-2]\\d|3[0-1]))`}`;  
const currentYearOtherMonth = month[0] == 0? min10Month:max10Month;  
/***组装身份证号校验规则*/  
//当前年  
const currentYear = `${year[0]}${year[1]}${year[2]}${year[3]}`;  
//当前年份校验,当前月份是一月份只使用 currentYearMonth 校验月份  
const currentYearReg = `(${currentYear}${ month[0] == 0 && month[1] == 1? '(':`(${currentYearOtherMonth}|`}${currentYearMonth}))`;  
//其他年份校验  
const regMillenniumMinBirthday = `${year[0]}[0-${year[1]}](([0-${year[2] - 1<0? 0:year[2] - 1}]\\d)|(${year[2]}[0-${year[3] - 1 < 0? 0:year[3] - 1}]))`;  
const otherYearReg = `((([0-${year[0] - 1}]\\d{3})|(${regMillenniumMinBirthday}))${regDay})`;  
const regBirthday18 = `(${otherYearReg}|${currentYearReg})`;  
const reg18 = `(${regCity}\\d{4}${regBirthday18}\\d{3}[0-9Xx])`;  
const reg = new RegExp(`^(${reg15}|${reg18})*$`);