[Suggestion]: Section from useContext might not be entirely accurate
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描述
Summary
There is a paragraph about re-rendering of children when parent re-renders which doesn't seem to be accurate, see below.
Page
Details
Here: https://react.dev/reference/react/useContext#optimizing-re-renders-when-passing-objects-and-functions,
it says in the bottom of the section:
As a result of this change, even if MyApp needs to re-render, the components calling useContext(AuthContext) won’t need to re-render unless currentUser has changed.
This is not entirely true. because if MyApp re-renders, all of its children (including those consuming the context) will re-render by default, regardless if currentUser has changed or not. Unless there was React.memo used - but this is not mentioned in that part of the docs.
贡献指南
从这里开始
- 先读完整个 Issue,再读项目的贡献指南。
- 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
- Fork 仓库,在一个分支上完成修改。
- 提交 Pull Request,并在描述里引用这个 Issue 编号。
调研方向
打开 useContext 参考文档中“Optimizing re-renders when passing objects and functions”部分,检查其中关于 MyApp 重新渲染的引述。验证其中描述的行为,然后修改文档,使其重新渲染条件准确无误,并在提交前运行文档检查。
由索引模型根据 Issue 内容生成。
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- javascript, react
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- documentation
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- 62/100