jQuery使用正则验证15/18身份证的方法示例

//身份证检验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"};function checkCard(card){  //是否为空  if(!card||!isCardNo(card)||!checkProvince(card)||!checkBirthday(card)||!checkParity(card)){    ZlyJs.divTip("请输入正确的身份证号码");    jQuery(".sf_list").focus();    return false;  }  return true;};//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X  var 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){  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（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;};if (!checkCard(code)) {  alert("请输入正确的身份证号码");  return false;}