官方文档：mirrors / yiminghe / async-validator · GitCodevalidate form asynchronous 🚀 Github 镜像仓库 🚀 源项目地址 ⬇https://gitcode.net/mirrors/yiminghe/async-validator?utm_source=csdn_github_accelerator 

注意：当前示例有bug：先验证失败，再验证成功后，之前失败的消息没有清除

<template>
  <div>
    <div>
      <input
        type="text"
        v-model="formData.username"
        placeholder="请输入用户名"
      />
      <span style="color: red" v-if="errorMessage.username">{{
        errorMessage.username
      }}</span>
    </div>
    <div>
      <input
        tyep="password"
        v-model="formData.password"
        placeholder="请输入密码"
      />
      <span style="color: red" v-if="errorMessage.password">{{
        errorMessage.password
      }}</span>
    </div>
    <button @click="submit()">保存</button>
    <button @click="reset()">重置</button>
  </div>
</template>

<script setup>
import Schema from "async-validator";
import { reactive, ref } from "vue";
//控制输入框变红
const error_username = ref(false);
const error_password = ref(false);
// 表单对象
const formData = ref({
  username: "",
  password: "",
});
// 校验规则
const rules = ref({
  username: {
    required: true,
    message: "姓名不能为空",
  },
  password: [
    {
      required: true,
      message: "密码不能为空",
    },
  ],
});
// 错误提示
const errorMessage = ref({
  username: "",
  password: "",
});
const validator = ref(new Schema(rules.value));
const submit = () => {
  validator.value
    .validate(formData.value, {
      firstFields: true,
    })
    .then((data) => {
      console.log("data:", data);
      // 校验通过
      console.log(" 校验通过,可以发起请求");
    })
    .catch(({ errors }) => {
      // 校验未通过
      // 显示错误信息
      for (let { field, message } of errors) {
        console.log("errors:", errors);
        errorMessage.value[field] = message;
      }
    });
};
// 初始化表单
const initFormData = () => {
  formData.value.username = "";
  formData.value.password = "";
};
// 重置
const reset = () => {
  initFormData();
  // 清空校验错误提示
  for (let key in errorMessage.value) {
    errorMessage.value[key] = "";
  }
};
</script>

<style scoped></style>