Building a Simple React Application
Now that you have a basic understanding of React, it’s time to build a simple React application. You can start by creating a project structure, defining components, managing state, and adding interactivity to your application. Here’s a simple example of a React application:
/* index.css */
body {
display: flex;
justify-content: center;
align-items: center;
}
button {
margin: 10px;
}
p,
h2 {
text-align: center;
}
import React, { useState } from 'react';
const Counter = () => {
// State to hold the count value
const [count, setCount] = useState(0);
// Function to increment the count
const incrementCount = () => {
setCount(count + 1);
};
// Function to decrement the count
const decrementCount = () => {
setCount(count - 1);
};
return (
<div>
<h2>Counter</h2>
<p>{count}</p>
<button onClick={incrementCount}>
Increment
</button>
<button onClick={decrementCount}>
Decrement
</button>
</div>
);
};
export default Counter;
Output:
Getting Started with React
ReactJS, often referred to as React, is a popular JavaScript library developed by Facebook for building user interfaces. It emphasizes a component-based architecture, where UIs are built using reusable components. React uses a declarative syntax to describe how UIs should look based on their state, simplifying development and enhancing code readability.
React also utilizes a virtual DOM to optimize rendering performance by minimizing actual DOM manipulations. React’s unidirectional data flow and rich ecosystem of libraries and tools have made it a go-to choice for frontend development, especially in building single-page applications (SPAs).
Table of Content
- Why ReactJS ?
- Setting Up Your Development Environment
- Understanding React Components
- Creating Your First React Component
- JSX (JavaScript XML)
- Working with Props and State
- Handling Events:
- Conditional Rendering
- Lists and Keys
- Styling React Components
- Introduction to React Hooks
- Building a Simple React Application
- Component Lifecycle
- React Router
- Managing State with Context API