Practical ideas for curious developers.

What Is <!DOCTYPE html>? A Complete Beginner's Guide with Examples

Have you ever wondered why almost every HTML document begins with the following line?

HTML vs HTM: What's the Difference and Which Should You Use?

Imagine you're learning HTML for the first time. You open a text editor, write your first HTML document, and save it as index.html.

I Was a Huge Windows Fan. Then I Tried Linux Again in 2026

Understanding the structure of an HTML document

In this tutorial, we'll explore the basic structure of an HTML document, understand the purpose of each part, and learn a little about how browsers process HTML behind the scenes.

What Is a Markup Language?

But have you ever wondered what the term markup language actually means? And why is HTML called a markup language instead of a programming language?

What Is AJAX? How It Works in JavaScript (With Examples)

AJAX stands for Asynchronous JavaScript and XML. It's a technique that allows a webpage to communicate with a server and exchange data without having to reload the entire page.