https://docs.github.com/en/github/authenticating-to-github/connecting-to-github-with-ssh https://docs.github.com/en/github/authenticating-to-github/connecting-to-github-with-ssh/checking-for-existing-ssh-keys …

JavaScript 原生的 DOM 选择器代码写起来太长了，我们像一个简单的办法来简化一下吧。