前提：Vite需要Node.js版本> = 12.0.0

1.  创建文件夹，文件夹下打开cmd,输入  yarn create vite

C:\Users\admin\Desktop\new>yarn create vite

 2. 进行选择

3.  vite.config.js 配置  （注意按目录创建global.scss）

import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import { resolve } from "path";

const pathResolve = (dir) => resolve(__dirname, '.', dir);

export default defineConfig({
  // 配置需要使用的插件列表，这里将vue添加进去
  plugins:[vue()],
  // 别名
  resolve: {
    alias: [
      {find: '@', replacement: pathResolve('src')},
      {find: '~', replacement: pathResolve('./')}
    ]
  },
  // 全局样式
  css: {
    preprocessorOptions: {
      scss: {
        additionalData: `@import "@/styles/global.scss";`
      }
    }
  },
})

4. package.json 配置

添加  "sass": "1.52.1","scss": "^0.2.4","vue-router": "^4.1.6"

{
  "name": "vite-project",
  "private": true,
  "version": "0.0.0",
  "type": "module",
  "scripts": {
    "dev": "vite",
    "build": "vite build",
    "preview": "vite preview"
  },
  "dependencies": {
    "vue": "^3.2.41",
    "vue-router": "^4.1.6"
  },
  "devDependencies": {
    "@vitejs/plugin-vue": "^3.2.0",
    "vite": "^3.2.3",
    "sass": "1.52.1",
    "scss": "^0.2.4"
  }
}

5.App.vue配置

<script setup>

</script>

<template>
  <router-view></router-view>
</template>

<style scoped>

</style>

6.main.js 配置

import { createApp } from 'vue'
import App from './App.vue'
import router from "./router";
const app = createApp(App)
app.use(router)
app.mount('#app')

7.自行创建 router.js 配置 （注意按目录创建页面）

import { createRouter, createWebHashHistory } from 'vue-router';
const router = createRouter({
    history: createWebHashHistory('/'),
    routes: [
        {
            path: '/',
            component: () => import('@/pages/Home/index.vue'),
        },
        {
            path: '/login',
            component: () => import('@/pages/Login/index.vue'),
        },
    ],
});


export default router;

或者 （注意 routes单词不要写错了 ）

import { createRouter, createWebHashHistory } from 'vue-router';

const routes = [
    {
        path: '/',
        component: () => import('@/pages/Home/index.vue'),
    },
    {
        path: '/login',
        component: () => import('@/pages/Login/index.vue'),
    },
]

const router = createRouter({
    history: createWebHashHistory("/"),
    routes,
    scrollBehavior(to, from, savePosition) {
        if (savePosition) {
            //解决页面从 a页 跳转到 b页 返回,初始在原来位置
            return savePosition
        } else {
            //解决页面跳转后页面高度和前一个页面高度一样
            return {x: 0, y: 0}
        }
    }
});

export default router;

关于 全局样式的使用：

global.scss中

$homebg:red;

某需要使用全局样式的页面中：

<style scoped lang="scss">
    .go-login{
      color: $homebg;
    }
</style>