根据身份证自动获取年龄/出生日期

<el-form-item label="证件号" prop="idCard">
       <el-input
            v-model="form.idCard"
             size="small"
             :disabled="isDisabled"
              style="width:90%;"
              @blur="getName(form.idCard)"
         ></el-input>
</el-form-item>

methods: {
      getName(iden) {
      let val = iden.length;
      let sex = null;
      let birth = null;
      let myDate = new Date();
      let month = myDate.getMonth() + 1;
      let day = myDate.getDate();
      let age = 0;
　　　
　　　　//判断身份证位数为18位时去截取时间日期
      if (val === 18) {
        age = myDate.getFullYear() - iden.substring(6, 10) - 1;
        sex = iden.substring(16, 17);
        birth =
          iden.substring(6, 10) +
          "-" +
          iden.substring(10, 12) +
          "-" +
          iden.substring(12, 14);
        if (
          iden.substring(10, 12) < month ||
          (iden.substring(10, 12) == month && iden.substring(12, 14) <= day)
        )
          age++;
      }
　　　　
　　　　//判断身份证位数为15位时去截取时间日期
      if (val === 15) {
        age = myDate.getFullYear() - iden.substring(6, 8) - 1901;
        sex = iden.substring(13, 14);
        birth =
          "19" +
          iden.substring(6, 8) +
          "-" +
          iden.substring(8, 10) +
          "-" +
          iden.substring(10, 12);
        if (
          iden.substring(8, 10) < month ||
          (iden.substring(8, 10) == month && iden.substring(10, 12) <= day)
        )
          age++;
      }
      this.form.age = age;
      this.form.dob = birth;
      // this.getDataInfo();
    }
}