Gain insights into React updates since V16, including new lifecycle methods, context API, and hooks. Discover how to utilize these features for writing better modern React applications.

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

It’s interesting that the effect function is invoked every time there’s an update. That’s great, but it’s not always the desired functionality.

# Using Effect for Specific Functionality

What if you want to run the effect function only when the component mounts?

That’s a common use case and `useEffect` takes a second parameter, an array of dependencies to handle this.

If you pass in an empty array, the effect function is run only on the mount — subsequent re-renders don’t trigger the effect function.

In this lesson, we'll discuss how the useEffect function can be used for specific functionality, especially for passing arrays.

Introduction

Lifecycle

Context API

ContextType

React.memo

The Profiler

Lazy Loading

Hooks

Conclusion

Passing Array Dependencies

Using Effect for Specific Functionality