React JS
Computer ScienceChapter 4 — Props and State
Lesson 4.2 : Understanding React State
Reading & Interactive Lesson
Understanding React State
Reading Material & Notes
Understanding React State
State represents data that can change during the lifetime of a component.
import { useState } from "react";
function Counter() {
const [count, setCount] = useState(0);
return (
<button onClick={() => setCount(count + 1)}>
{count}
</button>
);
}Updating state causes React to render the affected component again.
Course Curriculum
10 Chapters • 50 Lessons
Chapter 1 — Introduction to React JS
5 Lessons
Chapter 2 — React Environment and Project Setup
5 Lessons
Chapter 3 — JSX and React Components
5 Lessons
Chapter 4 — Props and State
5 Lessons
Chapter 5 — Events and Forms in React
5 Lessons
Chapter 6 — React Hooks
5 Lessons
Chapter 7 — Conditional Rendering and Lists
5 Lessons
Chapter 8 — React Routing and Navigation
5 Lessons
Chapter 9 — API Integration and State Management
5 Lessons
Chapter 10 — React Projects and Deployment
5 Lessons