免责声明：身份证号为随机组合而成，不会涉及任何隐私泄密问题，也非现实生活中真实的身份证号码；身份证号码所属年龄均为18岁以上，均已通过校验。

var IdNum1 = “320583198603316426”; // 测试号码1（18位）
var IdNum2 = “53062519890126897X”; // 测试号码2（18位，末位校验码为X）
var IdNum3 = “450111720930333”; // 测试号码3 (15位)

浏览器测试结果：

代码原文：

/*  身份证号码验证*    1.验证通过返回true，否则返回false。*    2.包括15位和18位长度的身份证号码的验证*/
checkIdCard = function(obj) {// 校验长度，类型if (isCardNo(obj) === false) {return false;}// 检查省份if (checkProvince(obj) === false) {return false;}// 校验生日if (checkBirthday(obj) === false) {return false;}// 检验位的检测if (checkParity(obj) === false) {return false;}return true;
};var vcity = {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"};// 检查号码是否符合规范，包括长度，类型
isCardNo = function(obj) {// 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Xvar reg = /(^\d{15}$)|(^\d{17}(\d|X)$)/;if (reg.test(obj) === false) {return false;}return true;
};
// 取身份证前两位,校验省份
checkProvince = function(obj) {var province = obj.substr(0, 2);if (vcity[province] == undefined) {return false;}return true;
};
// 检查生日是否正确
checkBirthday = function(obj) {var len = obj.length;// 身份证15位时，次序为省（2位）市（2位）县或区（2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})$/;var arr_data = obj.match(re_fifteen);var year = arr_data[2];var month = arr_data[3];var day = arr_data[4];var birthday = new Date('19' + year + '/' + month + '/' + day);return verifyBirthday('19' + year, month, day, birthday);}// 身份证18位时，次序为省（2位）市（2位）县或区（2位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为Xif (len == '18') {var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/;var arr_data = obj.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 >= 0 && time <= 130) {return true;}return false;}return false;
};
// 校验位的检测
checkParity = function(obj) {// 15位转18位obj = changeFivteenToEighteen(obj);var len = obj.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 += obj.substr(i, 1) * arrInt[i];}valnum = arrCh[cardTemp % 11];if (valnum == obj.substr(17, 1)) {return true;}return false;}return false;
};
// 15位转18位身份证号
changeFivteenToEighteen = function(obj) {if (obj.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;obj = obj.substr(0, 6) + '19' + obj.substr(6, obj.length - 6);for (i = 0; i < 17; i++) {cardTemp += obj.substr(i, 1) * arrInt[i];}obj += arrCh[cardTemp % 11];return obj;}return obj;
};