Document Controlled vs Uncontrolled Component Design pattern

pursuant to this discussion https://twitter.com/dan_abramov/status/1001943857096003584

all react components can be:

• controlled (no internal state)
• uncontrolled (internal state)
• mixed (uncontrolled by default, unless some props are passed to make it controlled)

the current docs on controlled vs uncontrolled: https://reactjs.org/docs/uncontrolled-components.html focus entirely on forms, but this design pattern applies to -all- components. we should document this.

questions

1. What else should we say in the docs?
2. do we want to tell people that they can do "mixed control" or do we leave that for people to discover for themselves?
3. is this the same page as https://reactjs.org/docs/uncontrolled-components.html or is it a separate page?

从现有的 uncontrolled-components.html 文档和链接的讨论开始。确定 controlled、uncontrolled 和 mixed component patterns 应属于此页面还是单独的页面，并确定文档应提供哪些指导。完成的标准是，所选文档明确涵盖表单之外的该模式，并回答范围方面尚未解决的问题。