如何使用element-ui重置特定的表单域

<template>
  <div>
    <el-form ref="myForm" :model="formData" label-width="80px">
      <el-form-item label="姓名" prop="name">
        <el-input v-model="formData.name"></el-input>
      </el-form-item>
      <el-form-item label="年龄" prop="age">
        <el-input v-model.number="formData.age"></el-input>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="resetForm">重置</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
export default {
  data() {
    return {
      formData: {
        name: '',
        age: ''
      }
    };
  },
  methods: {
    resetForm() {
      this.$refs.myForm.resetFields();
    }
  }
};
</script>