Record of actual combat projects in the background of vite (3)

1. Login page layout

1.1 Create Login.vue component

1.2 Configure routing

router index.js

//1. 导入vue-router相关函数
import { createRouter, createWebHashHistory } from "vue-router"
// 导入页面组件
import Home from "~/views/Home.vue"
import Login from "~/views/Login.vue"
import NotFound from "~/views/Page404.vue"
// 2.路由规则
const routes = [
1.3 Login.vue组件开发
（1）引入字体图标
   {
        path: "/",
        redirect: "/home"
   },
   {
        path: "/home",
        name: Home,
        component: Home
   },
   {
        path: "/login",
        name: Login,
        component: Login
   },
   {
        path: '/:pathMatch(.*)*',
        name: 'NotFound',
        component: NotFound
   },
]
// 3.路由对象实例化
const router = createRouter({
    history: createWebHashHistory(),
    routes
})
// 暴露导出
export default router

1.3 Login.vue component development

(1) Introducing font icons

 npm install @element-plus/icons-vue

(2) Use font icons

Import the icon icon on demand in the current component

import { UserFilled } from "@element-plus/icons-vue" ;

Import the icon icon globally in main.js

import * as ElementPlusIconsVue from '@element-plus/icons-vue'
const app = createApp(App)
for (const [key, component] of Object.entries(ElementPlusIconsVue)) {
  app.component(key, component)
}

Use the icon component in the form of the component Login.vue through the slot

<template #prefix>
    <el-icon><UserFilled /></el-icon>
</template>

(3) Login.vue component layout source code

<!-- 视图层 -->
<template>
  <el-row class="min-h-screen bg-indigo-500">
    <el-col :span="16" class="flex items-center justify-center">
      <div>
        <div class="font-bold text-5xl text-light-50 mb-4">欢迎光临
</div>
        <div class="text-gray-200 text-sm">《vue3商城后台管理系统》
</div>
        <el-icon><Lock /></el-icon>
      </div>
    </el-col>
    <el-col
      :span="8"
      class="bg-light-50 flex items-center justify-center flex-col"
    >
      <h2 class="font-bold text-3xl text-gray-800">欢迎回来</h2>
      <div
        class="flex items-center justify-center my-5 text-gray-300
space-x-2"
      >
        <span class="h-[1px] w-16 bg-gray-200"></span>
        <span>账号密码登录</span>
        <span class="h-[1px] w-16 bg-gray-200"></span>
      </div>
      <el-form :model="form" class="w-[250px]">
        <el-form-item>
          <el-input v-model="form.username" placeholder="请输入用户
名">
            <template #prefix>
              <el-icon><UserFilled /></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item>
          <el-input v-model="form.password" placeholder="请输入密
码">
            <template #prefix>
              <el-icon><Lock /></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item>
          <el-button
            round
            color="#626aef"
            class="w-[250px]"
            type="primary"
            @click="onSubmit"
            >登 录</el-button
          >
        </el-form-item>
      </el-form>
    </el-col>
  </el-row>
</template>
<!-- 逻辑层 -->
<script setup>
import { reactive } from "vue";
// 导入icon图标
// import { Lock, UserFilled } from "@element-plus/icons-vue";
// do not use same name with ref
const form = reactive({
  username: "",
  password: "",
});
const onSubmit = () => {
  console.log("submit!");
};
</script>
<!-- 样式层 -->
<style lang="" scoped>
</style>

2. Form validation

:rules="rules" binding rules

ref="formRef" Get the instance object of the el-form form component

prop="username" associates the specified object

show-password password display icon --- small eyes

<el-form :rules="rules" ref="formRef" :model="form" class="w-[250px]">
        <el-form-item prop="username">
          <el-input v-model="form.username" placeholder="请输入用户
名">
            <template #prefix>
              <el-icon><UserFilled /></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            type="password"
            v-model="form.password"
            placeholder="请输入密码"
            show-password
          >
            <template #prefix>
              <el-icon><Lock /></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item>
          <el-button
            round
            color="#626aef"
            class="w-[250px]"
            type="primary"
            @click="onSubmit"
            >登 录</el-button
          >
        </el-form-item>
      </el-form>
import { reactive, ref } from "vue";
const form = reactive({
  username: "",
  password: "",
});
// 验证规则
const rules = {
  username: [
   {
      required: true,
      message: "用户名不能为空",
      trigger: "blur",
   },
 ],
  password: [
   {
      required: true,
      message: "密码不能为空",
      trigger: "blur",
   },
 ],
};
// 获取form元素节点对象
const formRef = ref(null);
const onSubmit = () => {
  formRef.value.validate((valid) => {
    if (!valid) {
      return false;
   }
    console.log("验证通过");
 });
};

renderings