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

## Updating the State

Whenever an error is thrown in a descendant component, this method is called first, and the error thrown is passed as an argument.

Whatever value is returned from this method is used to update the state of the component.

Let’s update the `ErrorBoundary` component to use this lifecycle method.

# Updating the State

Whenever an error is thrown in a descendant component, this method is called first, and the error thrown is passed as an argument.

Whatever value is returned from this method is used to update the state of the component.

Let’s update the `ErrorBoundary` component to use this lifecycle method.

Let's define the getDerivedStateFromError method for the ErrorBoundary component in this lesson.

Introduction

Lifecycle

Context API

ContextType

React.memo

The Profiler

Lazy Loading

Hooks

Conclusion

Method 1: static getDerivedStateFromError

Updating the State