2 posts tagged with "hook"

React Hooks Cheat Sheet

July 29, 2021 · 3 min read

React Patterns Team

React Hooks Cheat Sheet

Declare state.

const [name, setName] = useState('Initial value');

Update state.

setName('New value'); // directly

setName((value) => 'New' + value); // based on previous state

December 26, 2020 · 2 min read

React Patterns Team

How to use async function in useEffect hook?

At first glance you will have an idea as following.

useEffect(async () => {
  await someTask();
}, []);

What's wrong?

The compiler should be yielding something as following.

Argument of type '() => Promise<void>' is not assignable to parameter of type 'EffectCallback'.