Update use-component-will-receive-update.mdx

SukkaW · Oct 10, 2024 · e1f8874 · e1f8874
1 parent a3e7931
commit e1f8874
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/docs/src/pages/use-component-will-receive-update.mdx b/docs/src/pages/use-component-will-receive-update.mdx
@@ -55,7 +55,11 @@ If you need to edit other components' states, write it like this:
 
 ```js
 useComponentWillReceiveUpdate(() => {
+  // Force React to immediately flush scheduled/batched updates
   flushSync(() => setLocalState(false))
+  // By the time flushSync finishes and reaches this line, the DOM update
+  // for local state change has finished, you can now safely trigger parent
+  // components' re-render.
   props.setParentState(false)
 }, [state])
 ```