其他分享
首页 > 其他分享> > webpack懒加载方式

webpack懒加载方式

作者:互联网

index.html
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>webpack</title> </head> <body> <h1>hello lazy loading</h1> <button id="btn">按钮</button> </body> </html>
index.js
console.log('index.js文件被加载了~'); // import { mul } from './test'; document.getElementById('btn').onclick = function() { // 懒加载~:当文件需要使用时才加载~ // 预加载 prefetch:会在使用之前,提前加载js文件 // 正常加载可以认为是并行加载(同一时间加载多个文件) // 预加载 prefetch:等其他资源加载完毕,浏览器空闲了,再偷偷加载资源 import(/* webpackChunkName: 'test', webpackPrefetch: true */'./test').then(({ mul }) => { console.log(mul(4, 5)); }); };
test.js
console.log('test.js文件被加载了~');

export function mul(x, y) {
  return x * y;
}

export function count(x, y) {
  return x - y;
}
webpack.config.js
const { resolve } = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
  // 单入口
  entry: './src/js/index.js',
  output: {
    filename: 'js/[name].[contenthash:10].js',
    path: resolve(__dirname, 'build')
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: './src/index.html',
      minify: {
        collapseWhitespace: true,
        removeComments: true
      }
    })
  ],
  optimization: {
    splitChunks: {
      chunks: 'all'
    }
  },
  mode: 'production'
};

 

标签:index,方式,js,webpack,test,mul,加载
来源: https://www.cnblogs.com/yyy1234/p/16218526.html