代码笔 (CodePen)

https://codepen.io/

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CodePen是一个在线社区，用于测试和展示用户创建的HTML，CSS和JavaScript代码段。它用作在线代码编辑器和开放源代码学习环境，开发人员可以在其中创建称为“
pens”的代码片段并对其进行测试。

从英文维基翻译而来-来源：https://en.wikipedia.org/wiki/CodePen

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The best place to build, test, and discover front-end code. CodePen is
a social development environment for front-end designers and

1. Build and deploy a website, show off your work, build test
2. to learn and debug, and find inspiration.