webpack-使用webpack-dev-server

Webpack环境搭建与配置实战

最新推荐文章于 2025-10-12 12:46:23 发布

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本文详细介绍使用Webpack构建前端项目的全过程，包括环境搭建、依赖安装、目录结构设置、源文件编写及运行效果展示。深入剖析Webpack配置文件，实现模块打包与热更新，适合初学者快速上手。

1.环境创建和命令

npm init -y
npm install --save-dev webpack
npm install --save-dev webpack-cli
npm install --save lodash
npm install --save-dev webpack-dev-server

npm start

2.目录结构

3.源文件

<!doctype html>
<html>
  <head>
    <title>起步</title>
  </head>
  <body>
    <script src="bundle.js"></script>
  </body>
</html>

import _ from 'lodash';
 
function component() {
  var element = document.createElement('div');
 
  // Lodash（目前通过一个 script 脚本引入）对于执行这一行是必需的
  element.innerHTML = _.join(['Hello', 'webpack'], ' ');
 
  return element;
}
 
document.body.appendChild(component());

{
  "name": "t8",
  "version": "1.0.0",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "webpack-dev-server --open"    
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "description": "",
  "devDependencies": {
    "webpack": "^4.42.1",
    "webpack-cli": "^3.3.11",
    "webpack-dev-server": "^3.10.3"
  },
  "dependencies": {
    "lodash": "^4.17.15"
  }
}

module.exports = {
    entry: './src/index.js',
    output: {
        filename: 'bundle.js',
        path: path.resolve(__dirname, 'dist')
    },
    devServer: {
        contentBase: './dist'
    }
};