search
HomeWeb Front-endJS TutorialHow to build a webpack+react development environment

This time I will show you how to build a webpack react development environment and what are the precautions for building a webpack react development environment. The following is a practical case, let's take a look.

The environment mainly depends on the version

  1. webpack@4.8.1

  2. webpack-cli@2.1 .3

  3. ##webpack-dev-server@3.1.4
  4. react@16.3.2
  5. babel-core@6.26.3
  6. babel-preset-env@1.6.1
  7. ##bable-preset-react@6.24. 1
  8. webpack installation and configuration

1. Getting started

Create a new project directory, initialize npm, and create a new development source directory

mkdir webpack-react && cd webpack-react
npm init -y
mkdir src
2.webpack-cli

Starting from version 4.x, webpack and webpack-cli need to be installed at the same time (this tool is used to run webpack in the command line).

npm install webpack webpack-cli --save-dev
3.wepback

Configuration file

Create a new webpack.config.js file in the project root directory. This file is the core file for running webpack.

webpack.config.js basic configuration

// webpack.config.js
const path = require('path');
module.exports = {
  entry: './src/index.js',              // 入口文件
  output: {                       // webpack打包后出口文件
    filename: 'app.js',               // 打包后js文件名称
    path: path.resolve(dirname, 'dist')  // 打包后自动输出目录
  }
}
package.json file scripts configuration

"scripts": {
  "build": "webpack"
}
At this time, run npm run build on the command line to execute webpack, webpack It will automatically find the webpack.config.js file in the project root directory and perform packaging.

npm run build
// webpack打包后的项目
├── dist
│  └── app.js       // 打包后的app.js
├── package.json
├── src
│  └── index.js      // 源目录入口文件
└── webpack.config.js

webpack.config.js module related configuration

webpack treats all files as modules, pictures, css files, fonts and other static resources will be packaged into js files. Therefore, the loader file will be needed. More Loaders can query the URL. Next, we install some necessary Loader files.

npm install style-loader css-loader url-loader --save-dev
Webpack.config.js adds the module module

module.exports = {
 entry: './src/index.js',
 output: {
 filename: 'app.js',
 path: path.resolve(dirname, 'dist')
 },
 module: {
 rules: [
  {
  test: /\.css$/,
  use: ['style-loader', 'css-loader']
  },
  {
  test: /\.(png|svg|jpg|gif)$/,
  use: ['url-loader']
  },
  {
  test: /\.(woff|woff2|eot|ttf|otf)$/,
  use: ['url-loader']
  }
 ]
 }
}
After introducing the loader, you can import the css file or other static resources you want to introduce in your src/index.js file.

cd src && touch main.css
src/index.js file introduces css

import "./main.css";

webpack.config.js plugins configuration

Main js files and static files can be After successfully packaging it into a js file, we need to put the js file into an html file. The webpack plug-in ***html-webpack-plugin*** does this. It can automatically generate an html file and put us Put the packaged js files into html.

npm install html-webpack-plugin --save-dev
webpack.config.js Configure plugins

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin'); // 引入插件
module.exports = {
 entry: './src/index.js',
 output: {
 filename: 'app.js',
 path: path.resolve(dirname, 'dist')
 },
 module: {
 rules: [
  {
  test: /\.css$/,
  use: ['style-loader', 'css-loader']
  },
  {
  test: /\.(png|svg|jpg|gif)$/,
  use: ['url-loader']
  },
  {
  test: /\.(woff|woff2|eot|ttf|otf)$/,
  use: ['url-loader']
  }
 ]
 },
 plugins: [
 new HtmlWebpackPlugin({title: 'production'}) // 配置plugin
 ]
};
After executing npm run build, we can see that there is an additional index.html file in the dist directory.

nbsp;html>

 
  <meta>
  <title>name</title>
 
 
 // 打包后的app.js已经被自动插入了html文件
 <script></script>
At this point, the simplest and most basic requirements of webpack have been configured. At this time, the project structure is:

├── dist            // 生产目录
│  ├── app.js
│  └── index.html
├── package.json
├── src            // 源目录
│  ├── index.js
│  └── main.css
└── webpack.config.js

React's webpack configuration

Install react

npm install react react-dom --save
Install react, wepback conversion dependency

React components are composed of JSX. Browsers cannot recognize JSX and need to be converted by Babel.

babel-croe is the babel core file
  1. babel-preset-env escapes ES6 to ES5
  2. babel-preset-react Escape JSX to js
  3. babel-loader webpack’s babe conversion
  4. Copy Code
The code is as follows:

npm install babel-core babel-preset-env babel-preset-react babel-loader --save-dev

##.babelrc configuration file

Create a new .babelrc file in the project root directory. This file is the core configuration of babel. Babel will automatically recognize it in the project root directory.

// .babelrc
{
 "presets": ["env", "react"]
}
webpack babel-loader configuration

// 在webpack.config.js 的modules.rules中加入此配置
{
 test: /\.(js|jsx)$/,
 exclude: /node_modules/,
 use: {
 loader: 'babel-loader'
 }
}

html-webpack-plugin template configuration

We know that react needs to get a root element of the page, and then render It will take effect. We can create a new html file and let the html-webpack-plugin plug-in package based on this file. So we create a new html file in the root directory and use this file as a template.

// index.html
nbsp;html>


 <meta>
 <title>Document</title>


    // react需要的渲染根元素
 <p></p>

At this time webpack.config.js configuration:

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
module.exports = {
 entry: './src/index.js',
 output: {
 filename: 'app.js',
 path: path.resolve(dirname, 'dist')
 },
 module: {
 rules: [
  {
  test: /\.(js|jsx)$/,
  exclude: /node_modules/,
  use: {
   loader: 'babel-loader'
  }
  },
  {
  test: /\.css$/,
  use: ['style-loader', 'css-loader']
  },
  {
  test: /\.(png|svg|jpg|gif)$/,
  use: ['url-loader']
  },
  {
  test: /\.(woff|woff2|eot|ttf|otf)$/,
  use: ['url-loader']
  }
 ]
 },
 plugins: [
 new HtmlWebpackPlugin({
  title: 'production',
  template: './index.html'  // 模板文件位置
 }) 
 ]
};

Write React and run webpack

// src/index.js
import React from 'react';
import ReactDom from 'react-dom';
import './main.css'
ReactDom.render(
 <h1 id="hello-world">hello world</h1>,
 document.getElementById('root')
);

运行npm run build,生成dist目录,打开dist目录中的index.html文件,可以发现浏览器已正常渲染"hello world"。

dev环境热更新配置

react的wepack完成以后,是不是发现每修改一次代码,想看到效果,得重新打包一次才行。webpack-dev-server配置可以帮助我们实现热更新,在开发环境解放我们的生产力。

安装webpack-dev-server

npm install webpack-dev-server --save-dev

webpack.config.js 配置

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const webpack = require('webpack');
module.exports = {
 entry: './src/index.js',
 output: {
 filename: 'app.js',
 path: path.resolve(dirname, 'dist')
 },
 module: {
 rules: [
  {
  test: /\.(js|jsx)$/,
  exclude: /node_modules/,
  use: {
   loader: 'babel-loader'
  }
  },
  {
  test: /\.css$/,
  use: ['style-loader', 'css-loader']
  },
  {
  test: /\.(png|svg|jpg|gif)$/,
  use: ['url-loader']
  },
  {
  test: /\.(woff|woff2|eot|ttf|otf)$/,
  use: ['url-loader']
  }
 ]
 },
 plugins: [
 new HtmlWebpackPlugin({
  title: 'production',
  template: './index.html'  
 }),
 // hot 检测文件改动替换plugin
 new webpack.NamedModulesPlugin(),   
 new webpack.HotModuleReplacementPlugin() 
 ],
    // webpack-dev-server 配置
 devServer: {
 contentBase: './dist',
 hot: true
 },
};

运行webpack-dev-server

在 package.json 文件 加入 scripts 配置:

"scripts": {
 "build": "webpack",
 "dev": "webpack-dev-server --open --mode development" // webpack-dev-server
},

命令行运行 npm run dev

可以在浏览器中输入localhost:8080 内容即为dist目录下的index.html内容。修改src/index.js中的内容或者依赖,即实时在浏览器热更新看到。

至此,react的webpack的基础开发环境已全部配置完毕。

相信看了本文案例你已经掌握了方法,更多精彩请关注php中文网其它相关文章!

推荐阅读:

怎样使用JS实现调用本地摄像头

怎样使用JS实现3des+base64加密解密算法

The above is the detailed content of How to build a webpack+react development environment. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Web Speech API开发者指南:它是什么以及如何工作Web Speech API开发者指南:它是什么以及如何工作Apr 11, 2023 pm 07:22 PM

​译者 | 李睿审校 | 孙淑娟Web Speech API是一种Web技术,允许用户将语音数据合并到应用程序中。它可以通过浏览器将语音转换为文本,反之亦然。Web Speech API于2012年由W3C社区引入。而在十年之后,这个API仍在开发中,这是因为浏览器兼容性有限。该API既支持短时输入片段,例如一个口头命令,也支持长时连续的输入。广泛的听写能力使它非常适合与Applause应用程序集成,而简短的输入很适合语言翻译。语音识别对可访问性产生了巨大的影响。残疾用户可以使用语音更轻松地浏览

如何使用Docker部署Java Web应用程序如何使用Docker部署Java Web应用程序Apr 25, 2023 pm 08:28 PM

docker部署javaweb系统1.在root目录下创建一个路径test/appmkdirtest&&cdtest&&mkdirapp&&cdapp2.将apache-tomcat-7.0.29.tar.gz及jdk-7u25-linux-x64.tar.gz拷贝到app目录下3.解压两个tar.gz文件tar-zxvfapache-tomcat-7.0.29.tar.gztar-zxvfjdk-7u25-linux-x64.tar.gz4.对解

web端是什么意思web端是什么意思Apr 17, 2019 pm 04:01 PM

web端指的是电脑端的网页版。在网页设计中我们称web为网页,它表现为三种形式,分别是超文本(hypertext)、超媒体(hypermedia)和超文本传输协议(HTTP)。

web前端和后端开发有什么区别web前端和后端开发有什么区别Jan 29, 2023 am 10:27 AM

区别:1、前端指的是用户可见的界面,后端是指用户看不见的东西,考虑的是底层业务逻辑的实现,平台的稳定性与性能等。2、前端开发用到的技术包括html5、css3、js、jquery、Bootstrap、Node.js、Vue等;而后端开发用到的是java、php、Http协议等服务器技术。3、从应用范围来看,前端开发不仅被常人所知,且应用场景也要比后端广泛的太多太多。

Python轻量级Web框架:Bottle库!Python轻量级Web框架:Bottle库!Apr 13, 2023 pm 02:10 PM

和它本身的轻便一样,Bottle库的使用也十分简单。相信在看到本文前,读者对python也已经有了简单的了解。那么究竟何种神秘的操作,才能用百行代码完成一个服务器的功能?让我们拭目以待。1. Bottle库安装1)使用pip安装2)下载Bottle文件https://github.com/bottlepy/bottle/blob/master/bottle.py2.“HelloWorld!”所谓万事功成先HelloWorld,从这个简单的示例中,了解Bottle的基本机制。先上代码:首先我们从b

web前端打包工具有哪些web前端打包工具有哪些Aug 23, 2022 pm 05:31 PM

web前端打包工具有:1、Webpack,是一个模块化管理工具和打包工具可以将不同模块的文件打包整合在一起,并且保证它们之间的引用正确,执行有序;2、Grunt,一个前端打包构建工具;3、Gulp,用代码方式来写打包脚本;4、Rollup,ES6模块化打包工具;5、Parcel,一款速度极快、零配置的web应用程序打包器;6、equireJS,是一个JS文件和模块加载器。

深入探讨“高并发大流量”访问的解决思路和方案深入探讨“高并发大流量”访问的解决思路和方案May 11, 2022 pm 02:18 PM

怎么解决高并发大流量问题?下面本篇文章就来给大家分享下高并发大流量web解决思路及方案,希望对大家有所帮助!

web是前端还是后端web是前端还是后端Aug 24, 2022 pm 04:10 PM

web有前端,也有后端。web前端也被称为“客户端”,是关于用户可以看到和体验的网站的视觉方面,即用户所看到的一切Web浏览器展示的内容,涉及用户可以看到,触摸和体验的一切。web后端也称为“服务器端”,是用户在浏览器中无法查看和交互的所有内容,web后端负责存储和组织数据,并确保web前端的所有内容都能正常工作。web后端与前端通信,发送和接收信息以显示为网页。

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),