[Typo]: using function before creating it in example

Summary

The code example on "How does React know which state to return?" Deep Dive section in the "State: A Component's Memory" page is using the setState function before defining it. While this code would work due to function hoisting in javascript, it's generally is not recommended, especially as it disturbs the reading flow for code snippets.

Page

https://react.dev/learn/state-a-components-memory#how-does-react-know-which-state-to-return

Details

No response

打开链接的“State: A Component's Memory”页面，在“ How does React know which state to return?” Deep Dive 部分检查其代码示例。重新排列示例，使 setState 在使用前定义，然后验证该代码片段仍然正确，并且按照预期的顺序阅读。