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MMmaXingXing avatar MMmaXingXing commented on September 23, 2024

介绍

Webpack是一套模块化的前端解决方案,顾名思义 web pack。可以看作是模块打包机,它做的事情有,分析你的项目结构,找到一些Javascript的代码和一些浏览器不能执行的如TypeScript、Sass等代码,转换并打包为合适的格式。也可以使用一些插件,优化你的代码开发效率,比如热更新等。

优点

  • 模块化打包
    将css,js, ts, sass等统一转换为浏览器可以识别的模式,并按需(压缩或不压缩)打包。

  • webpack-plugin
    webpack-plugin是用来扩展webpack功能的插件,用来扩展webpack功能,并在整个构建过程中生效,执行相关任务。

  • 按需加载
    代码中不需要的模块不被打进包里,或者按需加载。这是传统的流程构建工具,如Gulp、Grunt等所没办法实现的。

缺点

  • 传统技术开发的复杂项目不适用
    一些比如jquery,requirejs,seajs等脚本模块化开发的复杂项目项目,由于打包需求不稳定,webpack维护成本极高。

  • 侵入性较强
    使用webpack的项目,某些高级语法特性需要依赖独特语法实现,在一定程度上属于面向webpack开发,需要一定的学习成本。

  • 兼容性问题
    兼容性方面,webpack一向是面对最新标准,自身的很多特性需要polyfill才能向下兼容,甚至有些特性最新浏览器还没有原生兼容,在做开发时候需要注意。

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