Introduction to State in React
State in React allows components to maintain and manage data that changes over time. In this topic, we will see how to work with the useState hook to add state to functional components.
Synopsis:
The useState hook allows us to add state to functional components. Through this hook, we can create variables that change over time and update the view when modified.
- 1. Declaring a state:
We use `useState` to declare a state variable and its function to update it.
- 2. Updating the state:
We can update the state by calling the `setState` or `setCount` function, depending on the name we give it.
- 3. Using state in JSX:
The state value can be used in JSX to render dynamic content.
Purpose:
- Allow components to manage their own state without needing classes.
- Make interfaces dynamic and reactive to user interactions.
- Create more interactive and modern applications.
Exercises
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