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⚛️ ReactJS – Axios

📌 What is Axios?

Introduction to React Axios

Axios is a popular HTTP client library that makes it easier to fetch data from external APIs in React. It is promise-based, lightweight, and works with both browsers and Node.js. Axios simplifies handling requests, responses, errors, and supports features like request/response interception and automatic JSON transformation.

📌 Pre-Requisites

  • React Fundamentals
  • Components
  • useState & useEffect
  • Arrow Functions & Destructuring
  • Promise, Async & Await
  • Fetch API basics

⚙️ Why Use Axios in React?

  • Good defaults for JSON data (no manual headers or conversions needed)
  • Supports all HTTP methods with simple function names (.get, .post, etc.)
  • Simpler syntax than Fetch API
  • Better error handling (throws 400 & 500 range errors automatically)
  • Can be used in both client (browser) and server (Node.js)

🚀 Setting up Axios in React

To use Axios in React, you need:

  1. An existing React project
  2. Install Axios using npm install axios or yarn add axios
  3. An API endpoint for making requests

Example API: JSON Placeholder

📡 API Endpoints (JSONPlaceholder)

  • GET /posts
  • GET /posts/1
  • GET /posts/1/comments
  • GET /comments?postId=1
  • POST /posts
  • PUT /posts/1
  • PATCH /posts/1
  • DELETE /posts/1

📥 GET Request – Fetch Single Post

Example06
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📥 GET Request – Fetch Multiple Posts

Example07
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📤 POST Request – Send Data

Example08
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🧠 Test Your Knowledge

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