JS中校验身份证号

//1 城市代码列表
var aIdentityCode_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 "
}
//2 检查号码是否符合规范，包括长度，类型
function IdentityCode_isCardNo(card) {
    //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
    var reg = /(^\d{15}$)|(^\d{17}(\d|X)$)/;
    if (reg.test(card) === false) {
        return false;
    }
    return true;
}
//3 取身份证前两位，校验省份
function IdentityCode_checkProvince(card) {
    var province = card.substr(0, 2);
    if (aIdentityCode_City[province] == undefined) {
        return false;
    }
    return true;
}
//4 检查生日是否正确，15位以'19'年份来进行补齐
function IdentityCode_checkBirthday(card) {
    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})$/;
        var arr_data = card.match(re_fifteen); // 正则取号码内所含出年月日数据
        var year = arr_data[2];
        var month = arr_data[3];
        var day = arr_data[4];
        var birthday = new Date('19' + year + '/' + month + '/' + day);
        return IdentityCode_verifyBirthday('19' + year, month, day, birthday);
    }
    //身份证18位时，次序为省（3位）市（3位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为X
    if (len == '18') {
        var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/;
        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 IdentityCode_verifyBirthday(year, month, day, birthday);
    }
    return false;
}
//5 校验日期 ，15位以'19'年份来进行补齐。
function IdentityCode_verifyBirthday(year, month, day, birthday) {
    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;
}
//6 校验位的检测
function IdentityCode_checkParity(card) {
    card = 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;
}
//7 15位转18位身份证号
function IdentityCode_changeFivteenToEighteen(card) {
    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;
}
//8 身份证号码检验主入口
function IdentityCodeValid(card) {
    let pass = true;
    let sex = ''
    //是否为空
    if (pass && card === '')
        pass = false;
    //校验长度，类型
    if (pass && IdentityCode_isCardNo(card) === false)
        pass = false;
    //检查省份
    if (pass && IdentityCode_checkProvince(card) === false)
        pass = false;
    //校验生日
    if (pass && IdentityCode_checkBirthday(card) === false)
        pass = false;
    //检验位的检测
    if (pass && IdentityCode_checkParity(card) === false)
        pass = false;
    if (pass) {
        var iCard = IdentityCode_changeFivteenToEighteen(card);
        if (parseInt(iCard.charAt(16)) % 2 == 0) {
            sex = "0"; // 女生
        } else {
            sex = "1"; // 男生
        }
        return true
    } else {
        return false
    }
}
//9 页面中调用校验身份证号入口
function isCardNo(sId,value) {
    var result  = IdentityCodeValid(value);
    if(result){
        return true;
    }else{
        $("#" + sId).val("");
        layer.msg("身份证输入不合法", {icon: 2, time: 2000});
        return false;
    }
}