setstate - Read For Learn

Can’t perform a React state update on an unmounted component

Here is a React Hooks specific solution for Error Warning: Can’t perform a React state update on an unmounted component. Solution You can declare let isMounted = true inside useEffect, which will be changed in the cleanup callback, as soon as the component is unmounted. Before state updates, you now check this variable conditionally: Show code snippet Extension: Custom useAsync Hook We can … Read more

When to use React setState callback

When a react component state changes, the render method is called. Hence for any state change, an action can be performed in the render methods body. Is there a particular use case for the setState callback then?