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    Integrating a REST API into a React application allows you to fetch, send, and manipulate data from external services. The two most common and modern approaches are Fetch API and Axios.

    Using Fetch API

    Step 1 – Setup State and useEffect Use useState to store data and useEffect to trigger the API call when the component mounts.

    import React, { useState, useEffect } from 'react';

    const App = () => {
    const [posts, setPosts] = useState([]);
    const [error, setError] = useState(null);

    useEffect(() => {
    fetch('https://jsonplaceholder.typicode.com/posts?_limit=5')
    .then(response => {
    if (!response.ok) throw new Error('Network error');
    return response.json();
    })
    .then(data => setPosts(data))
    .catch(err => setError(err.message));
    }, []);

    if (error) return <p>Error: {error}</p>;

    return (
    <div>
    {posts.map(post => (
    <h3 key={post.id}>{post.title}</h3>
    ))}
    </div>
    );
    };

    export default App;
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    Tip: Use async/await with try/catch for cleaner syntax.

    Using Axios

    Step 1 – Install Axios

    npm install axios
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    Step 2 – Fetch Data

    import React, { useState, useEffect } from 'react';
    import axios from 'axios';

    const App = () => {
    const [posts, setPosts] = useState([]);
    const [error, setError] = useState(null);

    useEffect(() => {
    const fetchPosts = async () => {
    try {
    const res = await axios.get('https://jsonplaceholder.typicode.com/posts?_limit=5');
    setPosts(res.data);
    } catch (err) {
    setError(err.message);
    }
    };
    fetchPosts();
    }, []);

    if (error) return <p>Error: {error}</p>;

    return (
    <div>
    {posts.map(post => (
    <h3 key={post.id}>{post.title}</h3>
    ))}
    </div>
    );
    };

    export default App;
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    What is a react API call?
    React is a JavaScript library for building single-page applications. It has become popular for building both single-page applications (SPAs) and mobile applications. An API call in React is the process of sending a request to a web API from within React, which allows your application to interact and exchange information with other systems.
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    Codez Up
    https://codezup.com/react-crud-application-with-restful-api
    Building CRUD Applications with React and RESTful APIs: A Step-by-Step ...
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    How to Use REST API in React - letsreact.org

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    Integrate REST APIs in Your React App Step by Step …

    Jun 12, 2025 · Learn how to integrate REST APIs in your React app with this step-by-step tutorial. Enhance your application by fetching and managing …

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