Creating a React App with a RESTful API

Introduction

To get started with this tutorial, you'll need to have Node.js and npm installed on your computer.

Step 1: Create a new React app

Create a new React app using create-react-app by running the following command in your terminal:

npx create-react-app react-api-app

Step 2: Create a RESTful API

For this example, we'll use the JSONPlaceholder API.

Step 3: Fetch Data from the API

Create a new file called Api.js and add the following code:

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

function Api() {
  const [data, setData] = useState([]);

useEffect(() => {
    fetch('https://jsonplaceholder.typicode.com/posts')
      .then(response => response.json())
      .then(json => setData(json));
  }, []);

return (
    <div>
      <h1>API Data</h1>
      <ul>
        {data.map((item, index) => (
          <li key={index}>{item.title}</li>
        ))}
      </ul>
    </div>
  );
}

export default Api;

Step 4: Render the API Component

Open the App.js file and replace the existing code with the following:

import React from 'react';
import Api from './Api';

function App() {
  return (
    <div>
      <Api />
    </div>
  );
}

export default App;

Conclusion

You now have a React app that fetches and displays data from a RESTful API.