10 Expert Performance Tips Every Senior JS React Developer Should Know

As a senior Javascript React developer, consistently improving the performance of your applications is an essential skill to master. We’ve gathered the top 10 expert performance tips that will elevate your React development game.

Let’s take a deep dive into these advanced techniques, illustrated with code examples, and supercharge your React skills!

Efficient Component Rendering

Efficient component rendering is fundamental for top-notch React applications. In this section, we’ll cover various strategies to optimize render performance and help ensure lightning-fast page loads.

React.memo and PureComponents

React.memo and PureComponent are powerful techniques to prevent unnecessary component re-renders. React.memo is a higher-order component for functional components, while PureComponent is a base class for class components. Both optimize the rendering process by only allowing re-renders when the component’s props have shallowly changed.

Let’s compare a regular component with one using React.memo:

// Regular functional component
const TitleRegular = ({ text }) => {
  console.log("Rendering Regular Title...");
  return <h2>{text}</h2>;
};