react-lifecycle Archives

Correct way to clear interval in component did mount in React

November 7, 2022 by Magenaut

Im trying to clear an interval when the component is unmounted in a class based component in react. I have done some research on this and saw that in the componentWillUnmount lifecycle function, people are storing the actual function in a variable instead of just straight away clearing the interval. For example:

Can’t call setState (or forceUpdate) on an unmounted component

October 28, 2022 by Magenaut

I’m trying to fetch the data from the server after component has been updated but I couldn’t manage to do that. As far as I understand componentWillUnmount is called when component is about to be destroyed, but I never need to destroy it so it’s useless to me. What would be solution for this? When I should set the state?

componentWillUnmount with React useEffect hook

October 28, 2022 by Magenaut

How can the useEffect hook (or any other hook for that matter) be used to replicate componentWillUnmount?