This article provides a detailed explanation of how to use the memo feature in React applications, including an exploration of how it works behind the scenes. The idea of returning data that was already stored i
it has become a go-to choice for developers around the world. One of the reasons React.js is so powerful is its ability to efficiently manage state and update components only when necessary. This is where theuseMemoanduseCallbackhooks come in. In this blog post, we'll...
Here’s a guide on how to use the useMemo() React Hook: The useMemo() Hook is a built-in React Hook that allows you to memorize the result of a computation. It’s useful when you have a costly function or calculation that you only want to run when certain dependencies change. To us...
Discover Anything Hackernoon Login ReadWrite 9,796 reads 9,796 reads When and How to Use useMemo in React by LemonsMay 30th, 2023
Check out my React hooks introduction first, if you’re new to them.One React hook I sometimes use is useMemo.import React, { useMemo } from 'react'This hook is used to create a memoized value.This hook is very similar to useCallback, the difference is that useCallback returns a ...
Then, we told React to render OriginalComponent to the UI. We will implement enhancement functionality later in this article. When that’s done, it’s time to use the UpdatedComponent function in our app. To do so, first go to the HoverIncrease.js file and write the following lines: imp...
React’s useCallback vs useMemo At this point, it’s worth mentioning thatuseCallbackpairs nicely with another hook calleduseMemo. We’ll discuss them both, but in this piece, we’re going to focus onuseCallbackas the main topic.
How to Use Callback Hook Function in React? The first step is to import it from React. import React, { useState, useCallback } from 'react'; </> Copy Code We need to call useCallback which accepts a callback function as its first parameter and then any of the dependencies as second...
useCallback(), compared to useMemo(), is a more specialized hook that memoizes callbacks:import { useCallback } from 'react'; function MyComponent({ prop }) { const callback = () => { return 'Result'; }; const memoizedCallback = useCallback(callback, [prop]); return <Child...
To test that our Context state updates, let’s add a simple button with an onClick that callssetStatein our Context. We’ll use theuseContextHook to make this available to us, like so: TrackList.js importReact,{useContext}from"react"import{MusicPlayerContext}from"./MusicPlayerContext";const...