React Axios Explained — HTTP Client for React Apps

In this tutorial, you will learn about React Axios Explained. We cover key concepts, practical examples, and best practices to help you master this topic.

Axios is a promise-based HTTP client for React that provides request/response interceptors, automatic JSON Parsing, request cancellation, and better error handling than fetch.

What You'll Learn

• How to install and configure Axios
• How to make GET, POST, PUT, DELETE requests
• How to use interceptors for auth tokens
• How to cancel requests
• How to handle errors gracefully

Why It Matters

Axios simplifies HTTP communication with features fetch lacks: automatic JSON transformation, request timeout, interceptors, and progress events for uploads.

import axios from "axios";

const api = axios.create({
  baseURL: "https://api.example.com",
  timeout: 10000,
  headers: { "Content-Type": "application/json" }
});

api.interceptors.request.use(config => {
  const token = localStorage.getItem("auth_token");
  if (token) config.headers.Authorization = `Bearer ${token}`;
  return config;
});

api.interceptors.response.use(
  response => response,
  error => {
    if (error.response?.status === 401) {
      localStorage.removeItem("auth_token");
      window.location.href = "/login";
    }
    return Promise.reject(error);
  }
);

Expected output: An Axios instance with base URL, timeout, auth interceptor, and 401 redirect handling.