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webpack5項(xiàng)目之基本配置詳解

更新時(shí)間：2026年01月01日 16:07:37 作者：yaoyongcsdn

本文介紹了如何配置webpack項(xiàng)目,包括設(shè)置項(xiàng)目出入口、模式、devtool、本地環(huán)境和內(nèi)存HTML插件,以及安裝開發(fā)工具webpack-dev-server

一.配置項(xiàng)目出入口

webpack.config.js(文檔)

const path = require('path');
 
module.exports = {
    entry: {
        //設(shè)置入口文件為src/main.js 將來會(huì)被打包到dist目錄下
        main: './src/main.js',
        //other: './src/other.js',//多入口文件,打包后會(huì)在dist目錄下生成相應(yīng)js
    },
    output: {
        //打包后文件名
        filename: '[name]-[contenthash:6].js',
        //指定打包文件輸出目錄
        path: path.resolve(__dirname, 'dist'),
        //在每次構(gòu)建前清理 /dist 文件夾
        clean: true, 
    },
 
};

二.添加模式

webpack.config.js(文檔)

const path = require('path');
 
module.exports = {
    mode: 'development',
    entry: {
        //設(shè)置入口文件為src/main.js 將來會(huì)被打包到dist目錄下
        main: './src/main.js',
        //other: './src/other.js',//多入口文件,打包后會(huì)在dist目錄下生成相應(yīng)js
    },
    output: {
        //打包后文件名
        filename: '[name]-[contenthash:6].js',
        //指定打包文件輸出目錄
        path: path.resolve(__dirname, 'dist'),
        //在每次構(gòu)建前清理 /dist 文件夾
        clean: true, 
    },
 
};

如果沒有設(shè)置,webpack 會(huì)給 mode 的默認(rèn)值設(shè)置為 production

三.添加devtool

webpack.config.js(文檔)

const path = require('path');
 
module.exports = {
    mode: 'development',
    //將編譯后的代碼映射回原始源代碼
    devtool: 'inline-source-map', 
    entry: {
        //設(shè)置入口文件為src/main.js 將來會(huì)被打包到dist目錄下
        main: './src/main.js',
        //other: './src/other.js',//多入口文件,打包后會(huì)在dist目錄下生成相應(yīng)js
    },
    output: {
        //打包后文件名
        filename: '[name]-[contenthash:6].js',
        //指定打包文件輸出目錄
        path: path.resolve(__dirname, 'dist'),
        //在每次構(gòu)建前清理 /dist 文件夾
        clean: true, 
    },
 
};

四.安裝本地環(huán)境和內(nèi)存html插件

npm install -D webpack webpack-cli html-webpack-plugin

webpack.config.js(文檔)

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
 
module.exports = {
    mode: 'development',
    devtool: 'inline-source-map', //將編譯后的代碼映射回原始源代碼
    entry: './src/main.js',
    output: {
        filename: '[name]-[contenthash:6].js',//打包后文件名
        path: path.resolve(__dirname, 'dist'),
        clean: true, //在每次構(gòu)建前清理 /dist 文件夾
    },
    plugins: [
        new HtmlWebpackPlugin({
            template: './src/index.html', //打包的html模板文件
            title: 'webpack-demo',
            filename: "index.html", //打包后的html名稱
        }),
    ],
 
};

五.安裝開發(fā)工具

安裝開發(fā)工具webpack-dev-server(此處安裝3.11.2版本,最新版本4.0.0有兼容性問題)

npm install -D webpack-dev-server@3.11.2

在package.json中添加執(zhí)行腳本

  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "webpack serve --open --port 3000",
    "build": "webpack"
  },

package.json

{
  "name": "webpack-demo",
  "version": "1.0.0",
  "description": "",
  "private": true,
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "webpack serve --open --port 3000",
    "build": "webpack"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "html-webpack-plugin": "^5.3.2",
    "webpack": "^5.51.1",
    "webpack-cli": "^4.8.0",
    "webpack-dev-server": "^3.11.2"
  }
}