Yes there is, since setState works in an asynchronous way. That means after calling setState the this.state variable is not immediately changed. so if you want to perform an action immediately after setting state on a state variable and then return a result, a callback will be useful Consider the example below …. changeTitle: function … Read more
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: useEffect(() … Read more
In order to setState for a nested object you can follow the below approach as I think setState doesn’t handle nested updates. var someProperty = {…this.state.someProperty} someProperty.flag = true; this.setState({someProperty}) The idea is to create a dummy object perform operations on it and then replace the component’s state with the updated object Now, the spread … Read more