From the course: Master React 19 and Next.js 16 with Hands-On Projects and Real-World Applications

Unlock this course with a free trial

Join today to access over 25,200 courses taught by industry experts.

React.memo — memoizing components

React.memo — memoizing components

From the course: Master React 19 and Next.js 16 with Hands-On Projects and Real-World Applications

Start my 1-month free trial Buy for my team

React.memo — memoizing components

“

In this session, you will learn how to use React.Memo to optimize the performance of your React applications by preventing unnecessary re-renders of components. We'll build a simple example using code from the previous session to demonstrate how React.Memo works and when it's beneficial to use it. So, what is React.Memo? React.memo is a higher-order component that memoizes a functional component. This means it remembers the result of the previous render and skips re-rendering if the component's props haven't changed. If you have more complex prop comparisons, you can also provide a custom comparison function to control when the component should update. date. In short, React.memo helps us avoid unnecessary work and keeps our app running efficiently. In the previous session, you saw how incrementing parent count triggered a re-render of the child component, although the child component does not depend on the parent count state. Let's import React at the top of our child.jsx file. This…

Contents