dom部分：

<el-form
   :model="ruleForm"
   :rules="rules"
   ref="ruleForm"
   label-width="100px"
>
   <el-form-item label="活动名称" prop="name">
      <el-input v-model="ruleForm.name"></el-input>
   </el-form-item>
   <el-form-item label="版本号" prop="version">
      <el-input v-model="ruleForm.version" placeholder="示例：x.y.z"></el-input>
   </el-form-item>
   <el-form-item>
      <el-button type="primary" @click="submitForm('ruleForm')">立即创建</el-button>
      <el-button @click="resetForm('ruleForm')">重置</el-button>
   </el-form-item>
</el-form>

js部分：

export default {
  data() {
    var checkVersion = (rule, value, callback) => {
        if (!value) {
          return callback(new Error('版本号不能为空'));
        }
        let reg = /^[1-9]\d?(\.(0|[1-9]\d?)){2}$/;
        if(reg.test(value)){
          callback();
        }else{
          return callback(new Error('请输入正确的版本号，示例：x.y.z （数字：x为1-99，y和z为0-99）'));
        }
      };
    return {
      ruleForm: {
        name: "",
        version: ""
      },
      rules: {
        name: [
          { required: true, message: "请输入活动名称", trigger: "blur" },
          { min: 3, max: 5, message: "长度在 3 到 5 个字符", trigger: "blur" },
        ],
        version: {required: true, validator: checkVersion, trigger: "blur"}
      },
    };
  },
  methods: {
    submitForm(formName) {
      this.$refs[formName].validate((valid) => {
        if (valid) {
          alert("submit!");
        } else {
          console.log("error submit!!");
          return false;
        }
      });
    },
    resetForm(formName) {
      this.$refs[formName].resetFields();
    },
  },
  mounted() {},
};
</script>