webpack入门第一集：入口文件，命令执行,输出hellwor

安装

mkdir demo
npm init -y
npm install webpack webpack-cli --save-dev

初始化目录

dist
  index.html
src
  index.js

编写第一个index.js，输出hello word 黑白课堂

import _ from 'lodash';

function component() {
    var element = document.createElement('div');
    element.innerHTML = _.join(['Hello', 'word', '黑白课堂'], ' ');

    return element;
}

document.body.appendChild(component());

新建一个webpack.config.js配置文件

const path = require('path');

module.exports = {
  entry: './src/index.js',//入口文件
  output: {
    filename: 'main.js',//输出文件名字
    path: path.resolve(__dirname, 'dist')//输出目录
  }
};

命令

npx webpack --config webpack.config.js

将这个命令写在node命令下
"build": "webpack"

vim package.json

{
  "name": "demo",
  "version": "1.0.0",
  "description": "",
  "private": true,
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
     "build": "webpack"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "webpack": "^4.33.0",
    "webpack-cli": "^3.3.4"
  }
}

然后执行

npm run build

image.png