1、创建一个项目并启动

• npm init vue@latest
• cd demo
• npm install
• code .
• npm run dev

2、设置根字体大小和单位转化

• 安装 npm i amfe-flexible postcss-pxtorem -S
• amfe-flexible：用于设置根字体大小的
• postcss-pxtorem：用来自动转换单位的
• 在根目录创建一个 .postcssrc.js
  在main.js文件中，导入import 'amfe-flexible/index'

	  module.exports = {
	    plugins: {
	      "postcss-pxtorem": {
	        rootValue: 37.5,
	        propList: ["*"],
	      },
	    },
	  };

App组件

<template>
  <div>
    <div class="box">
      <a href="">App组件</a>
    </div>
  </div>
</template>

<style scoped>
  body{
    font-size: 12px;
  }
  .box{
    width: 200px;
    height: 100px;
    line-height: 100px;
    text-align: center;
    background-color: pink;
  }
</style>

3、去掉边框距离

• import ‘normalize.css’
• npm i normalize.css

4、css的嵌套使用

• npm i sass

<style lang="scss" scoped>
$color: red;
@mixin yj($radius){
  border-radius: $radius;
}
  .box{
    width: 200px;
    height: 100px;
    line-height: 100px;
    font-size: 30px;
    text-align: center;
    background-color: pink;
    @include yj(10px);
    a{
      text-decoration: none;
      &:hover{
        color: fuchsia;
      }
    }
  }
</style>

5、连接到手机上显示

1、手机和电脑在一个网段上，简单说来就是手机给电脑开热点或者电脑给手机开热点，有或许电脑和手机连接的是一个WiFi
2、在vite.config.js上，添加一下内容

6、vant ui 库的使用

6.1 基础用法

• 官网：https://vant-contrib.gitee.io/vant/#/zh-CN/
• 插件：npm i vant
• 在main.js中引入组件样式：import 'vant/lib/index.css';

6.2 底部导航栏

官网

App组件

<template>
  <div>
    <van-tabbar v-model="active">
      <van-tabbar-item icon="home-o">标签</van-tabbar-item>
      <van-tabbar-item icon="search">标签</van-tabbar-item>
      <van-tabbar-item icon="friends-o">标签</van-tabbar-item>
      <van-tabbar-item icon="setting-o">标签</van-tabbar-item>
    </van-tabbar>
  </div>
</template>

<script>
export default {
  data() {
    return {
      active:0
    }
  },
}
</script>

main.js中导入

效果显示

7、模拟锤子商城

• 官网：https://www.smartisan.com/

7.1 请求数据

7.2 解决跨越

    proxy: {
      // 选项写法
      '/api': {
        target: 'https://shopapi.smartisan.com',
        changeOrigin: true,
        rewrite: (path) => path.replace(/^\/api/, '')
      },
    }

7.3 组件切换

<template>
  <div>
    <router-view></router-view>
    <van-tabbar v-model="active" active-color="#F00" route>
      <van-tabbar-item icon="wap-home-o" to="/">首页</van-tabbar-item>
      <van-tabbar-item icon="bars" to="/list">分类</van-tabbar-item>
      <van-tabbar-item icon="shopping-cart-o" to="/cart">购物车</van-tabbar-item>
      <van-tabbar-item icon="manager-o" to="/myself">个人中心</van-tabbar-item>
    </van-tabbar>
  </div>
</template>

• router/index.js

import { createRouter, createWebHistory } from 'vue-router'

/*-----------------------路由的导入------------------------*/
import Home from '@/views/Home/index.vue'
import List from '@/views/List/index.vue'
import Cart from '@/views/Cart/index.vue'
import Myself from '@/views/Myself/index.vue'
/*--------------------------------------------------------*/

const router = createRouter({
  history: createWebHistory(import.meta.env.BASE_URL),
  routes: [
    /*----------------------首页--------------------------*/
    {
      path: '/',
      name: 'home',
      component: Home
    },
    /*----------------------分类--------------------------*/
    {
      path: '/list',
      name: 'list',
      component: List
    },
    /*----------------------购物车-------------------------*/
    {
      path: '/cart',
      name: 'cart',
      component: Cart
    },
    /*----------------------我的--------------------------*/
    {
      path: '/myself',
      name: 'myself',
      component: Myself
    },
  ]
})
export default router

7.4 轮播图的实现

<template>
  <div>
    <van-swipe class="my-swipe" :autoplay="3000" indicator-color="white">
      <van-swipe-item>1</van-swipe-item>
      <van-swipe-item>2</van-swipe-item>
      <van-swipe-item>3</van-swipe-item>
      <van-swipe-item>4</van-swipe-item>
    </van-swipe>
  </div>
</template>

<script>
import axios from 'axios'
export default {
  data() {
    return {
      list: []
    }
  },
  created() {
    axios.get('api/mobile/new/home?channel_id=1002').then((res)=>{
      console.log(res);
      this.list=res.data.data[0].content
    })
  },
}
</script>

<style scoped>
  .my-swipe .van-swipe-item {
    color: #fff;
    font-size: 20px;
    line-height: 150px;
    text-align: center;
    background-color: #39a9ed;
  }
</style>