React Catch-up

Don't get overwhelmed, get caught up quickly!

React has changed more in the past few months than the past five years it’s been around. Most of the changes are about getting our apps ready for Async React.

These short, easy to understand lessons, will help you navigate the changes.

Topics include:

  • setState updater signature
  • componentDidCatch and ErrorBoundary
  • getDerivedStateFromProps
  • getSnapshotBeforeUpdate
  • componentWillMount
  • componentWillReceiveProps
  • Fragment and returning arrays from components
  • refs (all three of them πŸ˜…)
  • forwardRef
  • createContext



Your Instructor


Ryan Florence
Ryan Florence

Hey! I've been building stuff on the web since the 90's (before fancy things like CSS and JavaScript!). I care most about great composable APIs and accessible UI. I co-authored React Router and now build OSS at Reach. I've taught web development and React to thousands of developers at our workshops, and now we're bringing that material online.

Hang out with me on twitter @ryanflorence :D


Frequently Asked Questions


When does the course start and finish?
The course starts now and never ends! It is a completely self-paced online course - you decide when you start and when you finish.
How long do I have access to the course?
How does lifetime access sound? After enrolling, you have unlimited access to this course for as long as you like - across any and all devices you own.
What if I am unhappy with the course?
We would never want you to be unhappy! If you are unsatisfied with your purchase, contact us in the first 30 days and we will give you a full refund.