ynw/other/validateIdCard.js

export default function validateIdCard(code) {
  code = String(code);

  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"
  };

  var checkcode = function(code) {
    //是否为空
    if (
      !code ||
      !iscodeNo(code) ||
      !checkProvince(code) ||
      !checkBirthday(code) ||
      !checkParity(code)
    ) {
      return false;
    }
    return true;
  };

  //检查号码是否符合规范，包括长度，类型
  var iscodeNo = function(code) {
    //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}$)|(^\d{17}(\d|[xX])$)/;
    if (reg.test(code) === false) {
      return false;
    }
    return true;
  };

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

  //检查生日是否正确
  var checkBirthday = function(code) {
    var len = code.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})$/;
      var arr_data = code.match(re_fifteen);
      var year = arr_data[2];
      var month = arr_data[3];
      var day = arr_data[4];
      var birthday = new Date("19" + year + "/" + month + "/" + day);
      return verifyBirthday("19" + year, month, day, birthday);
    }
    //身份证18位时，次序为省（3位）市（3位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为X
    if (len == "18") {
      var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/i;
      var arr_data = code.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
  var 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 false;
  };

  //校验位的检测
  var checkParity = function(code) {
    //15位转18位
    code = changeFivteenToEighteen(code);
    var len = code.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 codeTemp = 0,
        i,
        valnum;
      for (i = 0; i < 17; i++) {
        codeTemp += code.substr(i, 1) * arrInt[i];
      }
      valnum = arrCh[codeTemp % 11];
      if (valnum == code.substr(17, 1)) {
        return true;
      }
      return false;
    }
    return false;
  };

  //15位转18位身份证号
  var changeFivteenToEighteen = function(code) {
    if (code.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 codeTemp = 0,
        i;
      code = code.substr(0, 6) + "19" + code.substr(6, code.length - 6);
      for (i = 0; i < 17; i++) {
        codeTemp += code.substr(i, 1) * arrInt[i];
      }
      code += arrCh[codeTemp % 11];
      return code;
    }
    return code;
  };

  return checkcode(code);
}