Ah, the useEffect hook! It's like the Swiss Army knife of React. Its main gig is to handle all sorts of side effects, like fetching data or setting up subscriptions. It's the hook you call when you need to spice up your component with some extra functionality that's not just rendering stuff.
Alright, so here's the deal: when you use useEffect, you're basically saying, "Hey, React, listen up! I've got some special logic I want you to run after this component renders." It's like having a backstage pass to do all sorts of cool things. You can update the DOM, talk to APIs, or even dance the Macarena (well, maybe not that last one).
The return value from the effect's logic function is quite the VIP. It's like the bouncer at the club, deciding who gets in and who gets kicked out. But in this case, it's more about cleanup than partying. When you return a function from useEffect, React will make sure to run it when the component unmounts or when the effect needs to be re-run. It's like leaving the stage as tidy as you found it.
Keep these pages handy - they answer questions that show up regularly for this lab.
What are your learning goals after reading and reviewing the class README?
I am excited to learn more about hooks and the lifecycle of a React Component