React useState Hook: Creating State Variables
Quick Answer
The useState hook in React allows you to create state variables in functional components. It returns a stateful value and a function to update it, enabling components to hold and update local state without needing class components.
Learning Objectives
- Understand what the useState hook is and why it is used.
- Learn how to declare and initialize state variables in functional components.
- Practice updating state using the setter function returned by useState.
Introduction
React introduced hooks to allow functional components to manage state and side effects.
The useState hook is the most fundamental hook for adding state to functional components.
This tutorial explains how to create and use state variables with useState.
"Hooks let you use state and other React features without writing a class." – React Documentation





