js身份证校验

通过js实现对15位或者18位身份证格式校验：

通过调用idCardNoUtil.checkeIdCardNo(idCardNo)传入身份证号码，实现校验。

var idCardNoUtil = {
        /*省,直辖市代码表*/
        provinceAndCitys: {
            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"
        },

        /*每位加权因子*/
        powers: ["7", "9", "10", "5", "8", "4", "2", "1", "6", "3", "7", "9", "10", "5", "8", "4", "2"],

        /*第18位校检码*/
        parityBit: ["1", "0", "X", "9", "8", "7", "6", "5", "4", "3", "2"],

        /*性别*/
        genders: { male: "男", female: "女" },

        /*校验地址码*/
        checkAddressCode: function(addressCode) {
            var check = /^[1-9]\d{5}$/.test(addressCode);
            if (!check) return false;
            if (idCardNoUtil.provinceAndCitys[parseInt(addressCode.substring(0, 2))]) {
                return true;
            } else {
                return false;
            }
        },

        /*校验日期码*/
        checkBirthDayCode: function(birDayCode) {
            var check = /^[1-9]\d{3}((0[1-9])|(1[0-2]))((0[1-9])|([1-2][0-9])|(3[0-1]))$/.test(birDayCode);
            if (!check) return false;
            var yyyy = parseInt(birDayCode.substring(0, 4), 10);
            var mm = parseInt(birDayCode.substring(4, 6), 10);
            var dd = parseInt(birDayCode.substring(6), 10);
            var xdata = new Date(yyyy, mm - 1, dd);
            if (xdata > new Date()) {
                return false; //生日不能大于当前日期
            } else if ((xdata.getFullYear() == yyyy) && (xdata.getMonth() == mm - 1) && (xdata.getDate() == dd)) {
                return true;
            } else {
                return false;
            }
        },

        /*计算校检码*/
        getParityBit: function(idCardNo) {
            var id17 = idCardNo.substring(0, 17);
            /*加权 */
            var power = 0;
            for (var i = 0; i < 17; i++) {
                power += parseInt(id17.charAt(i), 10) * parseInt(idCardNoUtil.powers[i]);
            }
            /*取模*/
            var mod = power % 11;
            return idCardNoUtil.parityBit[mod];
        },

        /*验证校检码*/
        checkParityBit: function(idCardNo) {
            var parityBit = idCardNo.charAt(17).toUpperCase();
            if (idCardNoUtil.getParityBit(idCardNo) == parityBit) {
                return true;
            } else {
                return false;
            }
        },

        /*校验15位或18位的身份证号码*/
        checkIdCardNo: function(idCardNo) {
            //15位和18位身份证号码的基本校验
            var check = /^\d{15}|(\d{17}(\d|x|X))$/.test(idCardNo);
            if (!check) return false;
            //判断长度为15位或18位 
            if (idCardNo.length == 15) {
                return idCardNoUtil.check15IdCardNo(idCardNo);
            } else if (idCardNo.length == 18) {
                return idCardNoUtil.check18IdCardNo(idCardNo);
            } else {
                return false;
            }
        },

        //校验15位的身份证号码
        check15IdCardNo: function(idCardNo) {
            //15位身份证号码的基本校验
            var check = /^[1-9]\d{7}((0[1-9])|(1[0-2]))((0[1-9])|([1-2][0-9])|(3[0-1]))\d{3}$/.test(idCardNo);
            if (!check) return false;
            //校验地址码
            var addressCode = idCardNo.substring(0, 6);
            check = idCardNoUtil.checkAddressCode(addressCode);
            if (!check) return false;
            var birDayCode = '19' + idCardNo.substring(6, 12);
            //校验日期码
            return idCardNoUtil.checkBirthDayCode(birDayCode);
        },

        //校验18位的身份证号码
        check18IdCardNo: function(idCardNo) {
            //18位身份证号码的基本格式校验
            var check = /^[1-9]\d{5}[1-9]\d{3}((0[1-9])|(1[0-2]))((0[1-9])|([1-2][0-9])|(3[0-1]))\d{3}(\d|x|X)$/.test(idCardNo);
            if (!check) return false;
            //校验地址码
            var addressCode = idCardNo.substring(0, 6);
            check = idCardNoUtil.checkAddressCode(addressCode);
            if (!check) return false;
            //校验日期码
            var birDayCode = idCardNo.substring(6, 14);
            check = idCardNoUtil.checkBirthDayCode(birDayCode);
            if (!check) return false;
            //验证校检码  
            return idCardNoUtil.checkParityBit(idCardNo);
        },

        formateDateCN: function(day) {
            var yyyy = day.substring(0, 4);
            var mm = day.substring(4, 6);
            var dd = day.substring(6);
            return yyyy + '-' + mm + '-' + dd;
        },

        //获取信息
        getIdCardInfo: function(idCardNo) {
            var idCardInfo = {
                gender: "", //性别
                birthday: "" // 出生日期(yyyy-mm-dd)
            };
            if (idCardNo.length == 15) {
                var aday = '19' + idCardNo.substring(6, 12);
                idCardInfo.birthday = idCardNoUtil.formateDateCN(aday);
                if (parseInt(idCardNo.charAt(14)) % 2 == 0) {
                    idCardInfo.gender = idCardNoUtil.genders.female;
                } else {
                    idCardInfo.gender = idCardNoUtil.genders.male;
                }
            } else if (idCardNo.length == 18) {
                var aday = idCardNo.substring(6, 14);
                idCardInfo.birthday = idCardNoUtil.formateDateCN(aday);
                if (parseInt(idCardNo.charAt(16)) % 2 == 0) {
                    idCardInfo.gender = idCardNoUtil.genders.female;
                } else {
                    idCardInfo.gender = idCardNoUtil.genders.male;
                }

            }
            return idCardInfo;
        },

        /*18位转15位*/
        getId15: function(idCardNo) {
            if (idCardNo.length == 15) {
                return idCardNo;
            } else if (idCardNo.length == 18) {
                return idCardNo.substring(0, 6) + idCardNo.substring(8, 17);
            } else {
                return null;
            }
        },

        /*15位转18位*/
        getId18: function(idCardNo) {
            if (idCardNo.length == 15) {
                var id17 = idCardNo.substring(0, 6) + '19' + idCardNo.substring(6);
                var parityBit = idCardNoUtil.getParityBit(id17);
                return id17 + parityBit;
            } else if (idCardNo.length == 18) {
                return idCardNo;
            } else {
                return null;
            }
        }
};