This exercise is written using JavaScript (Node.js/Express with modern front-end technologies)
for Visual Studio 2022.
This assumes:
- ASP (Classic) is deprecated, so we migrate to a modern Express.js-based server.
- Database interaction should be handled using Node.js and an ORM (like Sequelize for SQL databases or MongoDB for NoSQL).
- The front-end uses HTML, JavaScript (client-side), and AJAX for database interaction.
1. Setting Up a Modern Node.js Server (Express):
This replaces "ASP server-side processing" with a REST API.
Step 1: Install Dependencies:
Open a terminal in Visual Studio 2022: and run:
npm init -y
npm install express mysql2 sequelize ejs
Step 2: Create `server.js` (Express API):
This file serves the :BookRecords API:.
const express = require('express');
const { Sequelize, DataTypes } = require('sequelize');
// Initialize Express app
const app = express();
const PORT = 3000;
// Setup database connection (Replace with actual credentials)
const sequelize = new Sequelize('bigbookdb', 'username', 'password', {
host: 'localhost',
dialect: 'mysql'
});
// Define BookRecords Model
const BookRecords = sequelize.define('BookRecords', {
id: { type: DataTypes.INTEGER, primaryKey: true, autoIncrement: true },
title: { type: DataTypes.STRING },
author: { type: DataTypes.STRING }
}, { timestamps: false });
// Middleware
app.use(express.static('public'));
app.use(express.json());
app.set('view engine', 'ejs');
// Route to fetch book records
app.get('/books', async (req, res) => {
try {
const books = await BookRecords.findAll();
res.json(books);
} catch (error) {
res.status(500).json({ error: "Database error" });
}
});
// Serve the HTML page
app.get('/', (req, res) => {
res.render('index');
});
// Start the server
app.listen(PORT, () => console.log(`Server running on http://localhost:${PORT}`));
2. Creating the Front-End (Client-Side JavaScript):
This replaces :ASP-generated HTML with JavaScript (AJAX) for dynamic content.:
Step 3: Create `views/index.ejs`:
This serves as the :HTML front-end with JavaScript:.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Book Records</title>
<script defer src="/script.js"></script>
</head>
<body>
<h1>Book Records</h1>
<table border="1">
<thead>
<tr>
<th>ID</th>
<th>Title</th>
<th>Author</th>
</tr>
</thead>
<tbody id="bookTableBody"></tbody>
</table>
</body>
</html>
3. Fetching Data with JavaScript (AJAX):
Step 4: Create `public/script.js`:
This JavaScript :fetches data from the Node.js API:.
document.addEventListener('DOMContentLoaded', () => {
fetch('/books')
.then(response => response.json())
.then(data => {
const tableBody = document.getElementById('bookTableBody');
data.forEach(book => {
let row = document.createElement('tr');
row.innerHTML = `| ${book.id} | ${book.title} | ${book.author} | `;
tableBody.appendChild(row);
});
})
.catch(error => console.error('Error fetching books:', error));
});
Summary of Improvements:
Next Steps:
- If using SQL Server instead of MySQL, install
mssql instead of mysql2.
- If requiring authentication, implement
express-session for user management.
- If needing pagination/search, extend the API with query parameters.