While doing work in frontend development, you may have come across useMemo. For those unfamiliar with it, we will explain how to use useMemo in React and also the most important/prominent use cases. What is useMemo? useMemo is a great built-in hook that can help with the performance of y...
In this post, I'm going to describe how and when to use the useMemo() React hook. 1. useMemo() hook useMemo() is a built-in React hook that accepts 2 arguments — a function compute that computes a result, and the depedencies array: const memoizedResult = useMemo(compute, dependenci...
Explore this blog and see how and when to use React.useMemo() hook to improve the performance of React components.
Learn how to use React.memo, some common pitfalls you might encounter, and why you shouldn't use React.memo for all your components.
This can be useful when you want to prevent unnecessary re-renders of child components that receive a callback as a prop.Here's an example of how useCallback works:import React, { useCallback } from 'react'; function MyComponent({ onButtonClick }) { const memoizedCallback = useCall...
React provides a built-in higher-order component called React.memo for this purpose.Here’s a step-by-step guide on how to memoize a component in ReactJS:1. Import React and React.memoFirst, ensure you have React and React.memo imported in your component file:import React from 'react';...
Profile using the React Devtools Profiler to find components that are rendering excessively Addmemo,useMemo, orPureComponentto prevent the excessive rendering If usingmemoorPureComponent, ensure the props passed in are referentially equal. Something likeuse-why-did-you-updatecan help find unexpected ineq...
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 ...
React is a popular JavaScript framework for creating front-end applications, such as user interfaces that allow users to interact with programs. Originally c…
Use signals as state Oct 5, 2023 vite.config.ts Use signals as state Oct 5, 2023 preact-signals How to use @preact/signals to replace useState/memo. Simplified state management in React a lot with this. It's superior to bothuseState()andmemo(), and much cleaner than Redux itself. ...