partial.html

<h1>Hello world!</h1><h2>webpack.config.js</h2><img src="images/webpack.png"><pre>
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const HtmlWebpackPartialsPlugin = require('html-webpack-partials-plugin');

module.exports = {
  entry: {
    main: path.join(__dirname, './main.js')
  },
  output: {
    path: path.join(__dirname, './dist'),
    filename: '[name].js'
  },
  plugins: [
    new HtmlWebpackPlugin(),
    new HtmlWebpackPartialsPlugin({
      path: path.join(__dirname, './partials/body.html')
    })
  ]
};
</pre><script src="main.js"></script>