What is Axios and how do you use it?

August 12, 2025

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Axios is a popular JavaScript library used to make HTTP requests from browsers or Node.js. It’s promise-based, making it easier to work with asynchronous calls compared to the native fetch API, and it supports features like automatic JSON conversion, request cancellation, and interceptors.

Key Features:

Supports GET, POST, PUT, DELETE, etc.
Automatically transforms JSON data.
Handles request/response interceptors for authentication or logging.
Works on both client and server sides.

Installation:

Usage Example (GET request):

 'axios';

axios.get('https://api.example.com/data')
  .then(response => {
    console.log(response.data);
  })
  .catch(error => {
    console.error(error);
  });

POST request example:

axios.post('/api/user', { name: 'John', age: 25 })
  .then(res => console.log(res.data))
  .catch(err => console.error(err));

In React, Axios is often used inside useEffect for fetching data when the component mounts. It simplifies API communication and works well with RESTful services.

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