React useCallback Hook Usage

React useCallback Hook

Pass an inline callback and an array of dependencies, useCallback will return a memoized version of the callback that only changes if one of the dependencies has changed....

React useCallback Hook Usage

This is useful when passing callbacks to optimized child components that rely on reference equality to prevent unnecessary renders. It improves the performance by reducing the unnecessary computations and providing already stored callback. It is similar to React useMemo Hook, the difference is it returns a callback and useMemo returns a value....

Without using the useCallback Hook

The problem is that once the counter is updated, all three functions are recreated again. The alert increases by three at a time but if we update some states all the functions related to that states should only re-instantiated. If another state value is unchanged, it should not be touched....

Using React useCallback Hook

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