vue3.2/Vite/Ts21: 登录模块表单校验

<template>
  <div class="login_container">
    <el-row>
      <!-- 当页面宽度小于 768，此处会消失 -->
      <el-col :span="12" :xs="0"></el-col>
      <el-col :span="12" :xs="24">
        <el-form
          class="login_form"
          :model="loginForm"
          :rules="rules"
          ref="loginFormRef"
        >
          <h1>hello, welcome!!</h1>
          <el-form-item prop="username">
            <el-input
              :prefix-icon="User"
              v-model="loginForm.username"
            ></el-input>
          </el-form-item>
          <el-form-item prop="password">
            <el-input
              type="password"
              :prefix-icon="Lock"
              v-model="loginForm.password"
              show-password
            ></el-input>
          </el-form-item>
          <el-form-item>
            <el-button
              class="login_btn"
              type="primary"
              size="default"
              @click="login"
              :loading="loading"
              >登录</el-button
            >
          </el-form-item>
        </el-form>
      </el-col>
    </el-row>
  </div>
</template>

<script setup lang="ts">
  import { User, Lock } from "@element-plus/icons-vue";
  import { reactive, ref } from "vue";

  // 路由方法引入
  import { useRouter } from "vue-router";
  let $router = useRouter();

  // 引入消息提示组件
  import { ElNotification } from "element-plus";

  // 引入 user 小仓库
  import { useUserStore } from "@/store/modules/user";
  let userStore = useUserStore();

  // 登录按钮 loading 效果
  let loading = ref(false);

  // 获取 el-form 组件
  let loginFormRef = ref();

  // 收集表单填写的数据
  let loginForm = reactive({
    username: "",
    password: "",
  });

  // 处理点击 button 登录逻辑
  const login = async () => {
    // 保证所有表单项验证通过
    await loginFormRef.value.validate();
    // loading 加载效果添加
    loading.value = true;
    try {
      await userStore.userLogin(loginForm);
      // 登录成功就跳转首页
      $router.push("/");
      // 成功提示信息
      ElNotification({
        type: "success",
        message: "登录成功",
      });
      loading.value = false;
    } catch (error) {
      loading.value = false;
      ElNotification({
        type: "error",
        message: (error as Error).message, // 断言错误类型
      });
    }
  };

  // 定义表单校验配置对象
  const rules = {
    username: [
      {
        required: true,
        min: 6,
        max: 10,
        message: "用户名长度是 6 ~ 10 位",
        trigger: "change",
      },
    ],
    password: [
      {
        required: true,
        min: 6,
        max: 15,
        message: "密码长度是 6 ~ 15 位",
        trigger: "change",
      },
    ],
  };
</script>