From the course: React Hooks
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Handling complex state with useReducer - React.js Tutorial
From the course: React Hooks
Handling complex state with useReducer
- [Instructor] In addition to useState, there's another way to manage state variables, and that is another one of these hooks called useReducer. So first, let's import useReducer, and we're going to do a little bit of cleanup here as usual. Instead of returning all that data, we're going to return just an h1, and the h1 should say a number. So the number that we want to display is going to relate to useReducer here. So let's say const number, and then setNumber. This is the function that's going to change the state. This is the state variable. But useReducer is going to look slightly different. Instead of taking in just an initial state, it's going to take in two arguments. So the first argument is actually a function, and the second argument is the initial state. So the initial state for this number is going to be zero. The function that we're going to send as the first argument to useReducer is going to be what we want…
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