A polyfill, or polyfiller, is a piece of code (or plugin) that provides the technology that you, the developer, expect the browser to provide natively.

一段代码或插件，可以让开发人员使用应有的技术，就像浏览器原生提供该功能一样。

youdao

A polyfill, or polyfiller, is a piece of code (or plugin) that provides the technology that you, the developer, expect the browser to provide natively.

一段代码或插件，可以让开发人员使用应有的技术，就像浏览器原生提供该功能一样。

youdao