React

版本

• Node 21.6.0
• Npm 10.2.4

项目

创建

npm init vite 项目名称

• react
• js
• npm i
• npm run dev

依赖

npm i axios                 # 网络
npm i antd --save           # UI
npm i @ant-design/icons
npm i react-router-dom      # 路由npm i sass -D               # sass
npm i vite-plugin-html -D   # html

环境区分

• package.json

"scripts" : {"dev": "vite --mode test","dev1": "vite --mode production","build": "vite build --mode test","build1": "vite build --mode production"
}

• package.json 同级
• .env.test

NODE_ENV = "test"
VITE_APP_TITLE = "测试"
VITE_APP_BASE_API = "test"

• .env.production

NODE_ENV = "production"
VITE_APP_TITLE = "生产"
VITE_APP_BASE_API = "production"

• vite.config.js

import { defineConfig,loadEnv } from 'vite'
import react from '@vitejs/plugin-react'
import { createHtmlPlugin } from "vite-plugin-html";
import { resolve } from "path";// https://vitejs.dev/config/
export default defineConfig(({ mode, command }) =>{const env = loadEnv(mode, process.cwd(), ""); return {plugins: [react(),createHtmlPlugin({inject: {data: {title: env.VITE_APP_TITLE,},},}),],resolve: {alias: {"@": resolve(__dirname, "src"), // 设置 `@` 指向 `src` 目录},},base: "./", // 设置打包路径server: {port: 4000, // 设置服务启动端口号open: true, // 设置服务启动时是否自动打开浏览器cors: true, // 允许跨域// 设置代理，根据我们项目实际情况配置// proxy: {//   '/api': {//     target: 'http://xxx.xxx.xxx.xxx:8000',//     changeOrigin: true,//     secure: false,//     rewrite: (path) => path.replace('/api/', '/')//   }// }},};
})

• index.html

<title><%= title %></title>

axios

• src/http/index.js

import axios from "axios";let service = axios.create({// baseURL: "https://cnodejs.org/api/v1", //相同绝对路径baseURL:import.meta.env.VITE_APP_BASE_API,timeout: 100000, //超过这么多时间，则请求终止headers: {//请求头携带数据的格式"Content-Type": "application/json;charset=UTF-8",// "Content-Type": "application/x-www-form-urlencoded;charset=utf-8",},
});
// 添加请求拦截器（Interceptors）
service.interceptors.request.use(function (config) {// 发送请求之前做写什么let token = localStorage.getItem("token");// 如果有if (token) {// 放在请求头（token跟后端沟通，他需要什么该成什么就可以了）config.headers.authorization = token;}return config;},function (error) {// 请求错误的时候做些什么return Promise.reject(error);}
);
// 添加响应拦截器
service.interceptors.response.use(function (response) {// 对响应数据做点什么return response.data;},function (error) {// 对响应错误做点什么return Promise.reject(error);}
);export default service;

• src/http/api.js

import request from "./index";export async function Ceshi(params) {return request({url: "/topics",method: "GET",params,});}export async function Ceshi2(data) {return request({url: "/Storage/GetStorageLack",method: "POST",data,});}

• 使用

import {useEffect, useRef } from "react";
import { Ceshi } from "@/http/api.js";
function App() {const cache = useRef(null);useEffect(() => {async function fetchData() {cache.current = true;const response = await Ceshi();console.log(response);}if (!cache.current) {fetchData();}}, []);return (<></>);
}

antd

• 使用

import { Button } from "antd";<><Button type="primary">Button</Button>
</>

sass

.ddd{.adsspan{color: aqua;}
}

router

• main.jsx

import { HashRouter } from "react-router-dom";
<HashRouter><App></App></HashRouter>

• App.jsx

import { useRoutes,useNavigate  } from "react-router-dom";const navigate = useNavigate()
const GetRoutes = () => {const routes = useRoutes([{path: "/",element: <Home></Home>,},{path: "/b",element: <B></B>,children: [{path: "/b/aaaa", // /b 需要加,不加找不到element: <C></C> ,},],},{path: "/*",exact: true,element: <div>后台404</div>,},]);return routes;
};
<GetRoutes /><Button type="primary" onClick={()=> navigate('/b/aaaa')}>Button</Button>// 在b页面中加
<Outlet></Outlet>