vant3怎么通过 ref 可以获取到 Form 实例并调用实例方法

vant3怎么通过 ref 可以获取到 Form 实例并调用实例方法

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<template>
  <div class="">
    <van-form @submit="onSubmit" class="form_box" ref="formRef">
      <van-field
        v-model="password"
        name="password"
        label="原密码"
        type="password"
        placeholder="原密码"
        :rules="[{ required: true, message: '请填写原密码' }]"
    /></van-form>
  </div>
</template>

<script setup>
import { onMounted, ref } from "vue";
let formRef = ref("");
let password = ref("");
const onSubmit = () => {};
onMounted(() => {
  console.log(formRef.value);//获取组件实例上的方法
});
</script>

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