//身份证号校验
function isIDCard(card){if (card === '') {console.log('请输入身份证号，身份证号不能为空');return false;}if (isCardNo(card) === false) {console.log('您输入的身份证号码不正确');return false;}//检查省份// if (checkProvince(card, city) === false) {//     console.log('您输入的身份证号码不正确');//     return false;// }//校验生日if (checkBirthday(card) === false) {console.log('您输入的身份证号码生日不正确');return false;}//检验位的检测if (checkParity(card) === false) {console.log('您的身份证校验位不正确');return false;}return true;console.log('OK');
}
//检查号码是否符合规范，包括长度，类型
function 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Xvar reg = /(^\d{15}$)|(^\d{17}(\d|X)$)/;if (reg.test(card) === false) {return false;}return true;
};
//取身份证前两位,校验省份
function checkProvince(card, vcity) {var province = card.substr(0, 2);if (vcity[province] == undefined) {return false;}return true;
};
//检查生日是否正确
function 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})$/;var arr_data = card.match(re_fifteen);var year = arr_data[2];var month = arr_data[3];var day = arr_data[4];var birthday = new Date('19' + year + '/' + month + '/' + day);return verifyBirthday('19' + year, month, day, birthday);}//身份证18位时，次序为省（3位）市（3位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为Xif (len == '18') {var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/;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);console.log("输出生日", birthday);return verifyBirthday(year, month, day, birthday);}return false;
};
//校验日期
function 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（0岁到100岁之间)var time = now_year - year;if (time >= 0 && time <= 100) {return true;}return false;}return false;
};
//校验位的检测
function checkParity(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);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;
};
//15位转18位身份证号
function 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;
};