reading-notes

🗒️ Class 28 - Component Lifecycle / useEffect Hook

Readings

useEffect hook

• What is the main intended use case for the useEffect hook?

  The useEffect is a React hook that lets us specify a side effect we want to occur that is caused by rendering vs an event.

• How does the effect’s logic interact with the component?

  The setup function runs after a component is added or is mounted onto the page. with every re-render where the dependencies change, the effect would have to run a cleanup code and then a setup code.

• What is the importance of the return value from the effect’s logic function?

  The return is important for the cleanup code logic. It runs the cleanup code a final time after the component is removed.