📚Library Management System

Step 1: Setup Project

npx create-react-app library-crud
cd library-crud
npm install axios


---

Step 2: Setup JSON Server

Install JSON Server globally (or as dev dependency):

npm install -g json-server

Create a db.json file in the root folder (outside src/):

{
  "books": [
    { "id": 1, "title": "Atomic Habits", "author": "James Clear", "year": 2018 },
    { "id": 2, "title": "The Alchemist", "author": "Paulo Coelho", "year": 1988 }
  ]
}

Run the server:

json-server --watch db.json --port 5000

Your API will run at 👉 http://localhost:5000/books

---

Step 3: Folder Structure

src/
┣ api/
┃ ┗ bookApi.js
┣ components/
┃ ┣ BookCard.jsx
┃ ┣ BookForm.jsx
┃ ┗ BookList.jsx
┣ App.jsx
┣ index.js
┗ App.css

---

Step 4: API Handling with Axios (src/api/bookApi.js)

import axios from "axios";

const API = "http://localhost:5000/books";

// GET all books
export const getBooks = async () => {
  return await axios.get(API);
};

// GET single book
export const getBook = async (id) => {
  return await axios.get(`${API}/${id}`);
};

// POST new book
export const addBook = async (book) => {
  return await axios.post(API, book);
};

// PUT update book
export const updateBook = async (id, book) => {
  return await axios.put(`${API}/${id}`, book);
};

// DELETE book
export const deleteBook = async (id) => {
  return await axios.delete(`${API}/${id}`);
};

---

*Step 5: Components
*

1. BookCard.jsx

import React from "react";

const BookCard = ({ book, onDelete, onEdit }) => {
  return (
    <div className="p-4 border rounded-lg shadow-md bg-white flex justify-between items-center">
      <div>
        <h2 className="text-lg font-bold">{book.title}</h2>
        <p className="text-gray-600">{book.author} ({book.year})</p>
      </div>
      <div>
        <button 
          onClick={() => onEdit(book)} 
          className="px-3 py-1 bg-blue-500 text-white rounded mr-2">
          Edit
        </button>
        <button 
          onClick={() => onDelete(book.id)} 
          className="px-3 py-1 bg-red-500 text-white rounded">
          Delete
        </button>
      </div>
    </div>
  );
};

export default BookCard;

---

1. BookForm.jsx

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

const BookForm = ({ onSubmit, currentBook }) => {
  const [book, setBook] = useState({ title: "", author: "", year: "" });

  useEffect(() => {
    if (currentBook) {
      setBook(currentBook);
    }
  }, [currentBook]);

  const handleChange = (e) => {
    setBook({ ...book, [e.target.name]: e.target.value });
  };

  const handleSubmit = (e) => {
    e.preventDefault();
    onSubmit(book);
    setBook({ title: "", author: "", year: "" });
  };

  return (
    <form onSubmit={handleSubmit} className="p-4 bg-gray-100 rounded-lg shadow-md mb-4">
      <input 
        type="text" name="title" placeholder="Title" value={book.title} 
        onChange={handleChange} className="border p-2 mr-2" required 
      />
      <input 
        type="text" name="author" placeholder="Author" value={book.author} 
        onChange={handleChange} className="border p-2 mr-2" required 
      />
      <input 
        type="number" name="year" placeholder="Year" value={book.year} 
        onChange={handleChange} className="border p-2 mr-2" required 
      />
      <button type="submit" className="px-4 py-2 bg-green-500 text-white rounded">
        {currentBook ? "Update" : "Add"} Book
      </button>
    </form>
  );
};

export default BookForm;

---

1. BookList.jsx

import React, { useEffect, useState } from "react";
import BookCard from "./BookCard";
import BookForm from "./BookForm";
import { getBooks, addBook, updateBook, deleteBook } from "../api/bookApi";

const BookList = () => {
  const [books, setBooks] = useState([]);
  const [currentBook, setCurrentBook] = useState(null);

  const loadBooks = async () => {
    const response = await getBooks();
    setBooks(response.data);
  };

  useEffect(() => {
    loadBooks();
  }, []);

  const handleAddOrUpdate = async (book) => {
    if (currentBook) {
      await updateBook(currentBook.id, book);
      setCurrentBook(null);
    } else {
      await addBook(book);
    }
    loadBooks();
  };

  const handleDelete = async (id) => {
    await deleteBook(id);
    loadBooks();
  };

  const handleEdit = (book) => {
    setCurrentBook(book);
  };

  return (
    <div className="max-w-2xl mx-auto mt-10">
      <h1 className="text-2xl font-bold mb-4 text-center">📚 Library Management</h1>
      <BookForm onSubmit={handleAddOrUpdate} currentBook={currentBook} />
      <div className="space-y-3">
        {books.map((book) => (
          <BookCard key={book.id} book={book} onDelete={handleDelete} onEdit={handleEdit} />
        ))}
      </div>
    </div>
  );
};

export default BookList;

---

Step 6: App.jsx

import React from "react";
import BookList from "./components/BookList";
import "./App.css";

function App() {
  return (
    <div className="App bg-gray-50 min-h-screen">
      <BookList />
    </div>
  );
}

export default App;

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Step 7: Run Project

npm start

and in another terminal:

json-server --watch db.json --port 5000

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Here is the output of the above code