安装webpack项目

1.初始化配置package.json

npm init

2.安装webpack

npm install webpack --save-dev

3.安装webpack-cli

npm install webpack-cli --save-dev

4.安装webpack-dev-server 用于启动服务

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

5.创建webpack.config.js (于根目录手动创建并写入内容)

var path = require('path');
var config = {
    entry: {
        main: './index' //入口文件
    },
    output: {
        path: path.join(__dirname, './dist'), //打包后输出目录名
        publicPath: '/dist/',
        filename: 'index.js'
    }
}
module.exports = config;

6.在package.json里面配置如下(scripts代码部分，配置webpack-dev-server的命令)

8080 //是配置的端口号，如果端口号冲突可自行更改成其他端口号
npm run dev //运行可启动项目
npm run webpack //运行可生成dist
"scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "dev": "webpack-dev-server --open --host localhost --port 8080 --config webpack.config.js",
    "webpack": "webpack"
}

7.创建index.js (于根目录手动创建并写入内容)

console.log('1')

8.创建index.html (于根目录手动创建并写入内容)

    
    
    


    
 Hello World! 
    

9.启动项目

根目录打开cmd输入命令，启动后的地址为 http://localhost:8080/
npm run dev

附加: 可能遇到问题

问题.1

- 我这里webpack相关插件的默认版本是
  "webpack": "^5.30.0",
  "webpack-cli": "^4.6.0",
  "webpack-dev-server": "^3.11.2"

- 报错如下
  Error: Cannot find module 'webpack-cli/bin/config-yargs'

- 后来找了下解决方案
  方案1.重装node_modules (无效)
  方案2.然后把webpack的版本号换了下,结果可用正常运行(可以)
    "webpack": "^4.41.2",
    "webpack-cli": "^3.3.10",
    "webpack-dev-server": "^3.9.0"

问题.2

待添加...

以下是可用的package.json配置(可以直接全部复制到package.json里面)，或者只复制webpack的版本号部分也行

{
    "name": "node1",
    "version": "1.0.0",
    "main": "index.js",
    "scripts": {
        "test": "echo \"Error: no test specified\" && exit 1",
        "dev": "webpack-dev-server --open --host localhost --port 8080 --config webpack.config.js"
    },
    "author": "",
    "license": "ISC",
    "devDependencies": {
        "webpack": "^4.41.2",
        "webpack-cli": "^3.3.10",
        "webpack-dev-server": "^3.9.0"
    },
    "description": ""
}