Vue3 Element Plus表单自定义校验的实现全过程

import { ref } from "vue";
import type { FormInstance } from 'element-plus'
import { useRouter } from "vue-router";
import { IUser2, IRules } from "@/interfaces/userInterface";
import { loginApi } from "@/apis/userApi";
import { User, Lock } from "@element-plus/icons-vue";

const $router = useRouter();
const user2 = ref<IUser2>({ account: "", password: "" });
const ruleFormRef = ref<FormInstance>()
const rules = ref<IRules>({
  account: [
    { required: true, message: "请输入用户名", trigger: "blur" },
    { pattern: /^[a-zA-Z0-9]{4,10}$/, message: "用户名包含数字和字母大小写4~10位", trigger: "blur" },
  ],
  password: [
    { required: true, message: "请输入密码", trigger: "blur" },
    { pattern: /^[a-zA-Z0-9!@#$%^&*(),._-]{6,12}$/, message: "密码包含数字和字母大小写,特殊字符6~12位", trigger: "blur" }
  ]
})

<el-form class="login_form" ref="ruleFormRef" :model="user2" :rules="rules">
   <h1>Hello</h1>
   <h2>欢迎来到白宫甄选</h2>
   <el-form-item class="login_item" prop="account">
       <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="user2.account"> 
       </el-input>
   </el-form-item>
   <el-form-item class="login_item" prop="password">
      <el-input type="password" placeholder="请输入密码" :prefix-icon="Lock"                                   
        v-model="user2.password" show-password></el-input>
   </el-form-item>
   <el-form-item class="login_item">
      <el-button class="login_btn" type="primary" @click="submitForm(ruleFormRef)">登陆 
      </el-button>
   </el-form-item>
</el-form>

const submitForm = (formEl: FormInstance | undefined) => {
  if (!formEl) return// 如果未定义表单实例，则直接返回，不执行后续操作

  // 验证表单，如果验证通过则调用登录接口
  formEl.validate(async(valid) => {
    if (valid) {
      // 调用登录接口并传入用户信息
      const res = await loginApi(user2.value);
      console.log(res);
      
      // 根据接口返回结果进行相应操作
      if (res.data.code !== 1) {
        ElNotification({
          title: '登陆失败',
          message: '用户名或密码错误',
          type: 'error',
        })
      } else {
        // 登录成功，存储token并跳转到首页
        localStorage.setItem("token", res.data.data.token);
        $router.push("/home");
        ElNotification({
          title: '登陆成功',
          message: '欢迎回来',
          type: 'success',
        })
      }
    } else {
      // 验证未通过，显示错误通知
      ElNotification({
          title: '校验',
          message: '请输入用户名和账号',
          type: 'error',
        })
    }
  })
}

watch(() => {
    return open.value
}, () => {
    if (!open.value) {
        form.value = {}
    }
})