js身份证检核

最新推荐文章于 2025-01-17 13:33:50 发布

kang1919

最新推荐文章于 2025-01-17 13:33:50 发布

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分类专栏： js 文章标签：身份证验证

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本文介绍了一套完整的身份证号码验证算法，包括省份校验、生日验证、校验位检测等功能，并提供了15位到18位身份证号码转换的方法。

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return true;
};

//取身份证前两位,校验省份
checkProvince = function (card) {
    var province = card.substr(0, 2);
    if (vcity[province] == undefined) {
        return false;
    }
    return true;
};

//检查生日是否正确
checkBirthday = function (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})$/;
        var arr_data = card.match(re_fifteen);
        var year = arr_data[2];
        var month = arr_data[3];
        var day = arr_data[4];
        var birthday = new Date('19' + year + '/' + month + '/' + day);
        return verifyBirthday('19' + year, month, day, birthday);
    }
    //身份证18位时，次序为省（3位）市（3位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为X
    if (len == '18') {
        var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/;
        var arr_data = card.match(re_eighteen);
        var year = arr_data[2];
        var month = arr_data[3];
        var day = arr_data[4];
        var birthday = new Date(year + '/' + month + '/' + day);
        return verifyBirthday(year, month, day, birthday);
    }
    return false;
};

//校验日期
verifyBirthday = function (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100岁之间)
        var time = now_year - year;
        if (time >= 3 && time <= 100) {
            return true;
        }
        return false;
    }
    return false;
};

//校验位的检测
checkParity = function (card) {
    //15位转18位
    card = changeFivteenToEighteen(card);
    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);//权重
        var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');//检核码
        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;
};

//15位转18位身份证号
changeFivteenToEighteen = function (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;
};

checkCard = function (card) {
var success = true;

card = card.replace(/(^\s*)|(\s*$)/g, "");//删除左右空格

    if (card === '') {
        success = false;
    }
    if (isCardNo(card) === false) {
        success = false;
    }

    if (checkProvince(card) === false) {
        success = false;
    }

    if (checkBirthday(card) === false) {
        success = false;
    }

    if (checkParity(card) === false) {
        success = false;
    }

    //补充
    if (!false) {
        //台湾
        var reg = /^[a-zA-Z][0-9]{9}$/;
        if (reg.test(card)) {
            success = true;
        }

//其他

}

return success;
};

最后调用 checkCard （身份证号就可以）