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前端性能优化—js代码打包
source link: https://juejin.im/post/5b9550806fb9a05cff31f7b3
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现在的 web 应用，内容一般都很丰富，站点需要加载的资源也特别多，尤其要加载很多 js 文件。js 文件从服务端获取，体积大小决定了传输的快慢；浏览器端拿到 js 文件之后，还需要经过解压缩、解析、编译、执行操作，所以，控制 js 代码的体积以及按需加载对前
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