Context API

Review, Research, and Discussion

• Describe use cases useState() vs useReducer()

  • useState()is setting the initial state and returning the actual state and a function to update the state
  • useReducer()accepts a reducer function and an initial state, and it returns the actual state and a dispatch function. The dispatch function alters state in an implicit way by mapping actions to state transitions

• Why do custom hooks need the use prefix?

  • This convention is very important. Without it, React wouldn’t be able to automatically check for violations of rules of Hooks because React couldn’t tell if a certain function contains calls to Hooks inside of it.

• What do custom hooks usually do?

  • the custom hooks will keep functional components simple and clean

• Using any list of custom hooks, research and name one that you think will be useful in your applications

  • react-fetch-hook:it will get the data and the isLoading state

• Describe how a hook that fetches API data might work

  • by using useEffect() hook, we can get the API data when the component that contains API call function was updated

Document the following Vocabulary Terms

• reducer: a function that determines changes to an application’s state

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