You need to use useEffect hook to achieve this. const [counter, setCounter] = useState(0); const doSomething = () => { setCounter(123); } useEffect(() => { console.log( Do something after counter has changed , counter); }, [counter]); If you want the useEffect callback to be ignored during the first initial render, then modify the code accordingly: import React, { useEffect, useRef } from react ; const [counter, setCounter] = useState(0); const didMount = useRef(false); const doSomething = () => { setCounter(123); } useEffect(() => { // Return early, if this is the first render: if ( !didMount.current ) { return didMount.current = true; } // Paste code to be executed on subsequent renders: console.log( Do something after counter has changed , counter); }, [counter]);

If you want to update previous state then you can do like this in hooks: const [count, setCount] = useState(0); setCount(previousCount => previousCount + 1); Docs: Updating the same state multiple times before the next render legacy: functional-updates

Mimic setState callback with useEffect, only firing on state updates (not initial state): const [state, setState] = useState({ name: "Michael" }) const isFirstRender = useRef(true) useEffect(() => { if (isFirstRender.current) { isFirstRender.current = false // toggle flag after first render/mounting return; } console.log(state) // do something after state has updated }, [state]) Custom Hook useEffectUpdate function useEffectUpdate(callback) { const isFirstRender = useRef(true); useEffect(() => { if (isFirstRender.current) { isFirstRender.current = false; // toggle flag after first render/mounting return; } callback(); // performing action after state has updated }, [callback]); } // client usage, given some state dep const cb = useCallback(() => { console.log(state) }, [state]); // memoize callback useEffectUpdate(cb);

I Think, using useEffect is not an intuitive way. I created a wrapper for this. In this custom hook, you can transmit your callback to setState parameter instead of useState parameter. I just created Typescript version. So if you need to use this in Javascript, just remove some type notation from code. Usage const [state, setState] = useStateCallback(1); setState(2, (n) => { console.log(n) // 2 }); Declaration import { SetStateAction, useCallback, useEffect, useRef, useState } from react ; type Callback = (value?: T) => void; type DispatchWithCallback = (value: T, callback?: Callback) => void; function useStateCallback(initialState: T | (() => T)): [T, DispatchWithCallback>] { const [state, _setState] = useState(initialState); const callbackRef = useRef>(); const isFirstCallbackCall = useRef(true); const setState = useCallback((setStateAction: SetStateAction, callback?: Callback): void => { callbackRef.current = callback; _setState(setStateAction); }, []); useEffect(() => { if (isFirstCallbackCall.current) { isFirstCallbackCall.current = false; return; } callbackRef.current?.(state); }, [state]); return [state, setState]; } export default useStateCallback; Drawback If the passed arrow function references a variable outer function, then it will capture current value not a value after the state is updated. In the above usage example, console.log(state) will print 1 not 2.

I was running into the same problem, using useEffect in my setup didn t do the trick (I m updating a parent s state from an array multiple child components and I need to know which component updated the data). Wrapping setState in a promise allows to trigger an arbitrary action after completion: import React, {useState} from react function App() { const [count, setCount] = useState(0) function handleClick(){ Promise.resolve() .then(() => { setCount(count => count+1)}) .then(() => console.log(count)) } return ( Increase counter ) } export default App; The following question put me in the right direction: Does React batch state update functions when using hooks?

I wrote custom hook with typescript if anyone still needs it. import React, { useEffect, useRef, useState } from "react"; export const useStateWithCallback = (initialState: T): [state: T, setState: (updatedState: React.SetStateAction, callback?: (updatedState: T) => void) => void] => { const [state, setState] = useState(initialState); const callbackRef = useRef<(updated: T) => void>(); const handleSetState = (updatedState: React.SetStateAction, callback?: (updatedState: T) => void) => { callbackRef.current = callback; setState(updatedState); }; useEffect(() => { if (typeof callbackRef.current === "function") { callbackRef.current(state); callbackRef.current = undefined; } }, [state]); return [state, handleSetState]; }

setState() enqueues changes to the component state and tells React that this component and its children need to be re-rendered with the updated state. setState method is asynchronous, and as a matter of fact, it does not return a promise. So In cases where we want to update or call a function, the function can be called callback in setState function as the second argument. For example, in your case above, you have called a function as a setState callback. setState( { name: "Michael" }, () => console.log(this.state) ); The above code works fine for class component, but in the case of functional component, we cannot use the setState method, and this we can utilize the use effect hook to achieve the same result. The obvious method, that comes into mind is that ypu can use with useEffect is as below: const [state, setState] = useState({ name: "Michael" }) useEffect(() => { console.log(state) // do something after state has updated }, [state]) But this would fire on the first render as well, so we can change the code as follows where we can check the first render event and avoid the state render. Therefore the implementation can be done in the following way: We can use the user hook here to identify the first render. The useRef Hook allows us to create mutable variables in functional components. It’s useful for accessing DOM nodes/React elements and to store mutable variables without triggering a re-render. const [state, setState] = useState({ name: "Michael" }); const firstTimeRender = useRef(true); useEffect(() => { if (!firstTimeRender.current) { console.log(state); } }, [state]) useEffect(() => { firstTimeRender.current = false }, [])

you can use following ways I knew to get the lastest state after updating: useEffect https://reactjs.org/docs/hooks-reference.html#useeffect const [state, setState] = useState({name: "Michael"}); const handleChangeName = () => { setState({name: "Jack"}); } useEffect(() => { console.log(state.name); //"Jack" //do something here }, [state]); functional update https://reactjs.org/docs/hooks-reference.html#functional-updates "If the new state is computed using the previous state, you can pass a function to setState. The function will receive the previous value, and return an updated value. " const [state, setState] = useState({name: "Michael"}); const handleChangeName = () => { setState({name: "Jack"}) setState(prevState => { console.log(prevState.name);//"Jack" //do something here // return updated state return prevState; }); } useRef https://reactjs.org/docs/hooks-reference.html#useref "The returned ref object will persist for the full lifetime of the component." const [state, setState] = useState({name: "Michael"}); const stateRef = useRef(state); stateRef.current = state; const handleClick = () => { setState({name: "Jack"}); setTimeout(() => { //it refers to old state object console.log(state.name);// "Michael"; //out of syntheticEvent and after batch update console.log(stateRef.current.name);//"Jack" //do something here }, 0); } In react syntheticEvent handler, setState is a batch update process, so every change of state will be waited and return a new state. "setState() does not always immediately update the component. It may batch or defer the update until later. ", https://reactjs.org/docs/react-component.html#setstate Here is a useful link Does React keep the order for state updates?

I had a use case where I wanted to make an api call with some params after the state is set. I didn t want to set those params as my state so I made a custom hook and here is my solution import { useState, useCallback, useRef, useEffect } from react ; import _isFunction from lodash/isFunction ; import _noop from lodash/noop ; export const useStateWithCallback = initialState => { const [state, setState] = useState(initialState); const callbackRef = useRef(_noop); const handleStateChange = useCallback((updatedState, callback) => { setState(updatedState); if (_isFunction(callback)) callbackRef.current = callback; }, []); useEffect(() => { callbackRef.current(); callbackRef.current = _noop; // to clear the callback after it is executed }, [state]); return [state, handleStateChange]; };

Your question is very valid.Let me tell you that useEffect run once by default and after every time the dependency array changes. check the example below:: import React,{ useEffect, useState } from "react"; const App = () => { const [age, setAge] = useState(0); const [ageFlag, setAgeFlag] = useState(false); const updateAge = ()=>{ setAgeFlag(false); setAge(age+1); setAgeFlag(true); }; useEffect(() => { if(!ageFlag){ console.log( effect called without change - by default ); } else{ console.log( effect called with change ); } }, [ageFlag,age]); return (

hooks demo effect.....

{age} Text

); } export default App; If you want the setState callback to be executed with the hooks then use flag variable and give IF ELSE OR IF block inside useEffect so that when that conditions are satisfied then only that code block execute. Howsoever times effect runs as dependency array changes but that IF code inside effect will execute only on that specific conditions.

We can write a hook called useScheduleNextRenderCallback that returns a "schedule" function. After we call setState, we can call the "schedule" function, passing a callback that we want to run on the next render. import { useCallback, useEffect, useRef } from "react"; type ScheduledCallback = () => void; export const useScheduleNextRenderCallback = () => { const ref = useRef(); useEffect(() => { if (ref.current !== undefined) { ref.current(); ref.current = undefined; } }); const schedule = useCallback((fn: ScheduledCallback) => { ref.current = fn; }, []); return schedule; }; Example usage: const App = () => { const scheduleNextRenderCallback = useScheduleNextRenderCallback(); const [state, setState] = useState(0); const onClick = useCallback(() => { setState(state => state + 1); scheduleNextRenderCallback(() => { console.log("next render"); }); }, []); return click me to update state; }; Reduced test case: https://stackblitz.com/edit/react-ts-rjd9jk

Simple solution, Just install npm i use-state-with-callback import React from react ; import { useStateWithCallbackLazy } from "use-state-with-callback"; const initialFilters = { smart_filter: "", }; const MyCallBackComp = () => { const [filters, setFilters] = useStateWithCallbackLazy(initialFilters); const filterSearchHandle = (e) => { setFilters( { ...filters, smart_filter: e, }, (value) => console.log("smartFilters:>", value) ); }; return ( filterSearchHandle(e.target.value)} name="filter" placeholder="Search any thing..." /> ); }; credited to: REACT USESTATE CALLBACK

Edited Using promise here seems still postpone the execution after rerender, triggering setState twice may be the best solution to get the latest state. Because the setState will be listed and we just need to get prevState to use before rerendering. Original Post I just figured out if we can use a Promise here to let setState become awaitable. Here is my experiment result, feels better then using a callback Mainly temp the resolve function to trigger in useEffect function useAsyncState(initialState) { const [state, setState] = useState(initialState) const resolveCb = useRef() const handleSetState = (updatedState) => new Promise((resolve, reject) => { // force previous promise resolved if (typeof resolveCb.current === function ) { resolveCb.current(updatedState) } resolveCb.current = resolve try { setState(updatedState) } catch(err) { resolveCb.current = undefined reject(err) } }) useEffect(() => { if (typeof resolveCb.current === function ) { resolveCb.current(state) resolveCb.current = undefined } }, [state]) return [state, handleSetState] } using in component function App() { const [count, setCount] = useAsyncState(0) const increment = useMemoizedFn(async () => { const newCount = await setCount(count + 1) console.log(newCount) }) console.log( rerender ) return ( ) }

I have a very specific use case where I needed to render a class in the dom, then set another class. This was my solution which I found to be quite elegant. const [value1, setValue1] = useState({value: whatever , onValue: false}) useEffect(() => { setValue1(prev => ({ value: whatever , onValue: !prev.onValue, })); }, [ whatever ]) useEffect(() => { // if you want to ensure the render happens before doThing2() then put it in a timeout of 1ms, setTimeout(doThing2, 1); // or if you are happy to call it immediately after setting value don t include the timeout doThing2() }, [value1.onValue])

I don t think that distinguish mounted or not with useRef is a good way, isn t a better way by determining the value genetated useState() in useEffect() whether it is the initial value? const [val, setVal] = useState(null) useEffect(() => { if (val === null) return console.log( not mounted, val updated , val) }, [val])

Until we have native built in support for setState callback, we can do the plain javascript way ... call the function and pass the new variables to it directly. const [counter, setCounter] = useState(0); const doSomething = () => { const newCounter = 123 setCounter(newCounter); doSomethingWCounter(newCounter); }; function doSomethingWCounter(newCounter) { console.log(newCounter); // 123 }

If you don t need to update state asynchronously you can use a ref to save the value instead of useState. const name = useRef("John"); name.current = "Michael"; console.log(name.current); // will print "Michael" since updating the ref is not async

I explored the use-state-with-callback npm library, and other similar custom hooks, but in the end I realized I can just do something like this: const [user, setUser] = React.useState( {firstName: joe , lastName: schmo } ) const handleFirstNameChange=(val)=> { const updatedUser = { ...user, firstName: val } setUser(updatedUser) updateDatabase(updatedUser) }

Custom Hook for useState with Callback: import { useCallback, useEffect, useRef, useState } from react ; // Define a generic function type for the updater and the callback type Updater = T | ((prevState: T) => T); type Callback = (state: T) => void; function useStateCallback(initialState: T): [T, (stateUpdater: Updater, cb?: Callback) => void] { const [state, setState] = useState(initialState); const cbRef = useRef | undefined>(undefined); // Ref to hold the callback const setStateCallback = useCallback( (stateUpdater: Updater, cb?: Callback) => { cbRef.current = cb; // Store the callback in ref // Set the state, handle function type updater for prevState setState(prevState => typeof stateUpdater === function ? (stateUpdater as (prevState: T) => T)(prevState) : stateUpdater); }, [] ); // useEffect to call the callback after state update useEffect(() => { if (cbRef.current) { cbRef.current(state); // Call the callback with the updated state cbRef.current = undefined; // Reset the callback ref } }, [state]); return [state, setStateCallback]; } export default useStateCallback; This hook adds a bit more complexity, but effectively mimics class component setState in hooks. Potential Usage: import React from react ; import useStateCallback from ./useStateCallback ; const ExampleComponent: React.FC = () => { const [count, setCount] = useStateCallback(0); // Example usage of setState with a callback const incrementAndLog = () => { setCount(count + 1, (newCount) => { console.log(`Count updated to: ${newCount}`); }); }; return (

计数:{计数}

Increment

); }; export default ExampleComponent;

What about passing a function? const [name, setName] = useState(initialName); ... setName(() => { const nextName = "Michael"; console.log(nextName); return nextName; });

I think what you need is useState and useCallback: useState react doc; useCallback react doc; Example Code import React, { useCallback, useState } from react ; const Test = () => { const [name, setName] = useState(""); const testCallback = useCallback(() => console.log(name), [name]); return ( { setName("Michael") testCallback(); }}>Name ) }; export default Test;