Documentation about Keys beyond usage in lists

The You Probably Don't Need Derived State post shows a pattern that uses the key prop to reset (force remount) elements in order to restart the component lifecycle: https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html#recommendation-fully-uncontrolled-component-with-a-key

It would be good to expand on that example in the main docs and discuss some of the pitfalls of that approach (for example, if a component is not written to account for changing data sources, the consumer must add a key to correctly reset the component).

从链接的“ You Probably Don’t Need Derived State”文章及其使用 key 的完全非受控组件示例开始。在 React 主文档的相关章节中加入一个可比的示例，并解释重置行为以及更改数据源时可能遇到的问题；当读者能够清楚理解其用法和注意事项时，即视为完成。