How can I optimize performance in React and Angular applications?

How can I optimize performance in React and Angular applications?

To optimize performance in React, consider using techniques like memoization, lazy loading, and code splitting. For Angular, you can use Ahead-of-Time (AOT) compilation, trackBy in ngFor, and optimize change detection.

What is memoization and how does it help in React?

Memoization is a technique that caches the results of function calls. In React, it helps prevent unnecessary re-renders by returning the cached result when the same inputs occur again.

Can you explain lazy loading in Angular?

Lazy loading in Angular allows you to load modules only when they are needed, reducing the initial load time of the application. This is done by configuring the router to load specific modules on demand.

What tools can I use to analyze performance in both frameworks?

You can use tools like Chrome DevTools for both React and Angular to analyze performance. Additionally, React has the React Profiler, and Angular has the Angular DevTools for more specific insights.