📘 Project: Product Listing Application (React + API Integration)

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🧩 Problem Statement

Build a React application that fetches product data from a public API and displays it in a responsive card layout.

Students must integrate an external REST API using Axios and manage application state using React Hooks (useState, useEffect).

The goal of this project is to understand:

• API integration in React
• State management using React Hooks
• Rendering dynamic UI using .map()
• Handling loading and error states
• Creating reusable UI components

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📦 Functional Requirements

1. Fetch Products from API

API Endpoint:

https://fakestoreapi.com/products

Requirements:

• Fetch data using Axios
• API call must be implemented inside useEffect
• Store response data using useState

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2. Display Products in Card Format

Each product card must display:

• Product Image
• Product Title
• Product Price
• Product Category
• “View Details” Button (UI only, no navigation required)

Design Requirements:

• Cards must be responsive
• Use CSS Grid or Flexbox for layout
• Clean and properly aligned UI

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3. Loading State

• Display “Loading…” while the API request is in progress

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4. Error Handling

• Display an appropriate error message if the API request fails

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🧠 Non-Functional Requirements

• Clean component structure
• Proper key usage while mapping products
• No console errors
• Proper separation of JSX and CSS
• Readable and well-formatted code

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🏗 Technical Constraints

Students must use:

• React Functional Components
• useState
• useEffect
• Axios
• CSS (No UI frameworks unless explicitly permitted)

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🎯 Learning Objectives

After completing this assignment, students should be able to:

• Integrate third-party APIs into a React application
• Understand component lifecycle using hooks
• Manage asynchronous data
• Render dynamic UI components
• Handle real-world UI states (loading and error)

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🚀 Bonus (Optional Enhancements)

Students may optionally implement:

• Search functionality
• Category filtering
• Pagination
• Sorting by price
• Product detail page using React Router

index.js

import React from 'react';
import ReactDOM from 'react-dom/client';
import './index.css';
import App from './App';
import reportWebVitals from './reportWebVitals';
import axios from 'axios';
// Add a request interceptor
axios.interceptors.request.use(
  config => {
    console.log("inside interceptor request", config)

    const token = "TOKEN FROM INTERCEPTORS"
    if (token) {
      console.log("INSIDE request use")
      config.headers['Authorization'] = 'Bearer ' + token
    }
    
    return config
  },
  error => {
    Promise.reject(error)
  }
)


axios.interceptors.response.use(
  config => {
    console.log("inside interceptor response", config)
    return config
  },
  error => {
    Promise.reject(error)
  }
)



const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(
  <React.StrictMode>
    <App />
  </React.StrictMode>
);

reportWebVitals();

App.js

import logo from './logo.svg';
import './App.css';
import { useEffect } from 'react';
import axios from 'axios';

function App() {

  useEffect(()=> {

    axios({
      method: 'get',
      url: 'http://localhost:1234/webservice.php'
    })
      .then(function (response) {
        console.log(response)
      });
    
  }, [])

  return (
    <>
    This is App component
    </>
  );
}

export default App;

webservice.php

<?php

header("Access-Control-Allow-Origin: *");

// echo "<pre>";
// print_r($_SERVER);

echo json_encode(["test" => "Hello world...."]);

npm i react-router-dom 

npx create-react-app routingapp

App.js

import Home from './components/Home';
import Blogs from './components/Blogs';
import Contact from './components/Contact';
import NoPage from './components/NoPage';
import { BrowserRouter, Outlet, Route, Routes } from 'react-router-dom';
import Layout from './components/Layout';

function App() {
  return (
    <>
    <h1>HELLO WORLD</h1>
    <BrowserRouter>
      <Routes>
        <Route path="/admin" element={<Layout />}>
          <Route index element={<Home />} />
          <Route path="contact" element={<Contact />} />
          <Route path="*" element={<NoPage />} />
        </Route>
        <Route path="/user" element={<Layout />}>
          <Route index element={<Home />} />
          <Route path="contact" element={<Contact />} />
          <Route path="blogs" element={<Blogs />} />
          <Route path="test" element={<div>This is test component</div>} />
          <Route path="*" element={<NoPage />} />    
        </Route>
      </Routes>
    </BrowserRouter>
    </>

  );
}

export default App;

Layout.js

import { Outlet, Link } from "react-router-dom";

export default function Layout() {
  return (
    <>
      <nav>
        <ul>
          <li>
            <Link to="/">Home</Link>
          </li>
          <li>
            <Link to="/blogs">Blogs</Link>
          </li>
          <li>
            <Link to="/contact">Contact</Link>
          </li>
        </ul>
      </nav>
      <Outlet />
    </>
  )
}

Outlet is the block where router components get loaded