What’s new with React? New lifecycle methods, context API, hooks, and lots more. While the fundamental principles of React have stayed the same, the way we write React apps has changed with each new release.  

If you learned React a while back, it’s possible that you haven’t been up to date with every new feature/release. It’s also possible to get lost in all the new features. Where exactly do you start? How important are they for your day to day use?

This course is your one-stop reference to most important React updates since V16 was released. We’ll walk through all the major features of modern React so you can stay in sync with the most recent changes while learning to write better software.

Reintroducing React: V16 and Beyond

## Record a Session First

The Profiler works by recording a session of your application in use. In this recording, it gathers information about the components of your application and displays some interesting information you can exploit to find performance bottlenecks.

### Start the Recording
To get started, click the record button. 


# Record a Session First

The Profiler works by recording a session of your application in use. In this recording, it gathers information about the components of your application and displays some interesting information you can exploit to find performance bottlenecks.

## Start the Recording
To get started, click the record button. 


Let's figure how Profiler works in this lesson.

Introduction

Lifecycle

Context API

ContextType

React.memo

The Profiler

Lazy Loading

Hooks

Conclusion

How does the Profiler Work?

Record a Session First

Start the Recording