身份证号格式校验

// 身份证号格式校验
testIdNO(value) {
  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"
  };

  // 判断是否为空
  let isEmpty = function (card) {
      if (/^\s*$/.test(card) === true) {
          return true;
      }
  }
  //检查号码是否符合规范，包括长度，类型  
  let isCardNo = function (card) {
      if (isEmpty(card)) {
          return true;
      }
      //这个代码表示身份证可以为空
      //身份证号码为15位或者18位，15位时全为数字，18位前17位为数字，最后一位是校验位，可能为数字或字符X  
      var reg = /(^\d{15}$)|(^\d{17}(\d|X)$)/;
      if (reg.test(card) === false) {
          return false;
      }


      return true;
  };

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

  //检查生日是否正确  
  let checkBirthday = function (card) {
      if (isEmpty(card)) {
          return true;
      }
      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  
  let 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 true;
      }
      return false;
  };

  //校验位的检测  
  let checkParity = function (card) {
      if (isEmpty(card)) {
          return true;
      }
      //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  
  let changeFivteenToEighteen = function (card) {
      if (isEmpty(card)) {
          return true;
      }
      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;
  };

  var card = value;
  //校验长度，类型  
  if (isCardNo(card) === false) {
      //alert('您输入的身份证号码不正确，请重新输入');
      //document.getElementById('card_no').focus;
      return false;
  }
  //检查省份  
  if (checkProvince(card) === false) {
      return false;
  }
  //校验生日  
  if (checkBirthday(card) === false) {
      return false;
  }
  //检验位的检测  
  if (checkParity(card) === false) {
      return false;
  }

  return true;
},