Building a Loan Calculator Web App with Vanilla HTML, CSS, and JavaScript.

Learn how to build a real-world web app using only HTML, CSS, and JavaScript. This step-by-step guide shows how to create a functional Loan Calculator from scratch, using a clear and approachable Q&A format.

Designed for beginners and intermediate web developers, this book focuses on applying core web technologies in a hands-on project.

Inside you'll learn how to:

• Set up your project files

• Structure clean and semantic HTML for inputs and results

• Style your app for readability and responsiveness with CSS

• Add interactivity and calculations with plain JavaScript

• Validate user input and handle errors

• Display loan results including monthly payment, total payment, and total interest

• Test, debug, and improve the user experience

• Move forward with version control, deployment, and additional features

This focused, example-driven guide provides the tools to start building web apps from the ground up.

Includes code snippets, best practices, and tips for real-world development.

Start building today.