reading-notes

Advanced State with Reducers

Review, Research, and Discussion

1. How can we ensure that an effect hook runs only once?
   • If you want to run an effect and clean it up only once (on mount and unmount), you can pass an empty array ([]) as a second argument.
2. Can useState() update more than one state variable at the same time?
   • No, but we can call useState more than once to update multiple variable.s
3. Is useState() synchronous?
   • no its Async.

Vocab

1. State Hook
   • A Hook is a special function that lets you “hook into” React features.
2. Component Lifecycle
   • A component’s lifecycle is broadly classified into four parts:
     • initialization
     • mounting
     • updating
     • unmounting.