Update README.md

yisar · web-flow · commit 02c5b1587bb7 · 2020-04-12T10:55:33.000+08:00
diff --git a/README.md b/README.md
@@ -253,7 +253,7 @@ function App() {
 }
 
 function A() {
-  const context = useContext(Context, ctx => ctx.count1)
+  const context = useContext(Context, ctx => ctx.count1) // with selector, only execute when count1 changed
   console.log('A')
   return <div>{context}</div>
 }

Original file line number	Diff line number	Diff line change
`@@ -253,7 +253,7 @@ function App() {`
`253`	`253`	`}`
`254`	`254`
`255`	`255`	`function A() {`
`256`		`- const context = useContext(Context, ctx => ctx.count1)`
	`256`	`+ const context = useContext(Context, ctx => ctx.count1) // with selector, only execute when count1 changed`
`257`	`257`	`console.log('A')`
`258`	`258`	`return <div>{context}</div>`
`259`	`259`	`}`