The solution I saw on the public account is here. I usually use the performance of the browser to check the performance.
One: webapck optimization and open gzip compression
1.babel-loader用 include 或 exclude 来帮我们避免不必要的转译，不转译node_moudules中的js文件
其次在缓存当前转译的js文件，设置loader: 'babel-loader?cacheDirectory=true'
2.文件采用按需加载等等
3.具体的做法非常简单，只需要你在你的 request headers 中加上这么一句：
accept-encoding:gzip
4.图片优化，采用svg图片或者字体图标
5.浏览器缓存机制，它又分为强缓存和协商缓存
Two: local storage-from Cookie to Web Storage, IndexedDB
explain the differences, advantages and disadvantages of SessionStorage and localStorage and cookie
Three: code optimization
1.事件代理
2.事件的节流和防抖
3.页面的回流和重绘
4.EventLoop事件循环机制
5.代码优化等等
I can't find the link to the original text, let me put it first, invade and delete it.
