window启动webpack打包的三种方法

1.在cmd终端执行 npx webpack命令

2.在package.json文件同级建立webpack.config.js文件，内容如下：

const path = require('path');

module.exports = {
  entry: './src/index.js',             // 入口
  output: {                            // 出口
    filename: 'bundle.js',             // 文件名
    path: path.resolve(__dirname, 'dist')       // 生成路径
  }
};

执行命令 npx webpack --config webpack.config.js

3.修改package.json脚本

{
    "name": "webpack-demo",
    "version": "1.0.0",
    "description": "",
    "main": "index.js",
    "scripts": {
      "test": "echo \"Error: no test specified\" && exit 1",
+     "build": "webpack"                         // 修改命令执行方法
    },
    "keywords": [],
    "author": "",
    "license": "ISC",
    "devDependencies": {
      "webpack": "^4.0.1",
      "webpack-cli": "^2.0.9",
      "lodash": "^4.17.5"
    }
  }

执行命令npm run build

结论：生成类似下面的目录，打开index.html 有Hello webpack显示

webpack-demo
|- package.json
|- webpack.config.js
|- /dist
  |- bundle.js
  |- index.html
|- /src
  |- index.js
|- /node_modules