Learn React Hooks

Chapter 4: Using the Reducer and Effect Hooks

1. What are common problems with State Hooks?
   • Complex state changes are hard to do with State Hooks
2. What are actions?
   • Actions are objects that describe a state change, for example, { type: 'CHANGE_FILTER', byAuthor: 'Daniel Bugl' }
3. What are reducers?
   • Reducers are functions that process state changes. They accept the current state and an action object and return a new state.
4. When should we use a Reducer Hook instead of a State Hook?
   • Reducer Hooks should be used when complex state changes are needed. Usually, this is the case for global state.
   • When setter functions of multiple State Hooks are called together, this is a good indicator for using a Reducer Hook instead.
5. Which steps are needed ...