Building a Calorie Estimator Web App: with Vanilla HTML, CSS, and JavaScript.: A Practical Q&A Guide

This book is a step-by-step guide to building a calorie estimator web app using only vanilla HTML, CSS, and JavaScript. It is designed for beginners and intermediate developers who want to strengthen their understanding of front-end web development through a practical project.

The content is organized in a question-and-answer format, helping you learn by addressing common challenges developers face while building a real-world application. You will learn how to:

• Create a structured layout using semantic HTML

• Style a clean and responsive interface with CSS

• Use JavaScript to calculate and display estimated daily calorie needs

• Handle user input and form validation

• Improve usability with clear design and feedback

By the end of the book, you will have built a fully functional calorie estimator and gained a clearer understanding of how HTML, CSS, and JavaScript work together in a complete web project.

This guide is ideal for anyone looking to build a practical project while improving core development skills.