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Polyfill是什么？
2022-04-22 03:10:00 【sdKdqweas】
前言
在学习Babel中，通过 Polyfill 方式在目标环境中添加缺失的特性。
这里的polyfill方式添加我不是太明白
什么是Polyfill
先从这个名词意思开始，他的意思是特殊的粘合剂保证附着力和填充不会收缩或开裂。
在简化一点就是用于缝补的功能
那么在js环境中，什么情况下需要缝补？
当我们在使用一些高版本的API时，低版本不支持，这时候该怎么办？
所以Polyfill就是存在这两者之间的一个中间件。
它会自动帮我们修正位于高版本和低版本浏览器之间的不使用特性
有时也可以称它为垫片。
垫片的描述也挺形象，却乏了这一块，就无法运行，只要加上这个垫片，双方就能和在一起工作
版权声明
本文为[sdKdqweas]所创，转载请带上原文链接，感谢
https://blog.csdn.net/economics3/article/details/124332503
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