data () {
    let idCardValidity = (rule, code, callback) => {
      var city = { 11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "內蒙古", 21: "遼寧", 22: "吉林", 23: "黑龍江 ", 31: "上海", 32: "江蘇", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山東", 41: "河南", 42: "湖北 ", 43: "湖南", 44: "廣東", 45: "廣西", 46: "海南", 50: "重慶", 51: "四川", 52: "貴州", 53: "雲南", 54: "西藏 ", 61: "陝西", 62: "甘肅", 63: "青海", 64: "寧夏", 65: "新疆", 71: "臺灣", 81: "香港", 82: "澳門", 91: "國外 " };
      var tip = ""
      var pass = true
 
      if (!code || !/^\d{6}(18|19|20)?\d{2}(0[1-9]|1[012])(0[1-9]|[12]\d|3[01])\d{3}(\d|X)$/i.test(code)) {
        tip = "身份證號格式錯誤"
        pass = false;
      } else if (!city[code.substr(0, 2)]) {
        tip = "地址編碼錯誤"
        pass = false
      } else {
        // 18位身份證需要驗證最後一位校驗位
        if (code.length === 18) {
          code = code.split('')
          // ∑(ai×Wi)(mod 11)
          // 加權因子
          var factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2]
          // 校驗位
          var parity = [1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2]
          var sum = 0
          var ai = 0
          var wi = 0
          for (var i = 0; i < 17; i++) {
            ai = code[i]
            wi = factor[i]
            sum += ai * wi
          }
          var last = parity[sum % 11];
          if (parity[sum % 11] != code[17]) {
            tip = "校驗位錯誤"
            pass = false
          }
        }
      }
      if (!pass) {
        callback(new Error(tip))
      } else {
        callback()
      }
      // if (!pass) alert(tip)
      // return pass
    }
    return {
     
      personInfo: {
        idCard: "",
      },
      rules: {
        idCard: [{ required: true, message: '請輸入證件號', trigger: 'blur' },
          {
            pattern: /(^\d{8}(0\d|10|11|12)([0-2]\d|30|31)\d{3}$)|(^\d{6}(18|19|20)\d{2}(0\d|10|11|12)([0-2]\d|30|31)\d{3}(\d|X|x)$)/,
            message: '請輸入正確的證件號'
          },
          { validator: idCardValidity, trigger: 'blur' }],
      }
    }
  },

1.規則方法寫在 data裡 return之前。

2. 身份證有效性校驗規則來源與百度

校驗公示：∑(ai×Wi)(mod 11)

https://baike.baidu.com/item/%E6%9C%89%E6%95%88%E8%BA%AB%E4%BB%BD%E8%AF%81%E4%BB%B6/5039723?fr=aladdin。