Learn HTML with Real Code Examples
Updated Nov 21, 2025
Explain
HTML uses tags to define headings, paragraphs, links, images, tables, forms, and other content.
It is not a programming language but a markup language for describing document structure and semantics.
HTML works alongside CSS for styling and JavaScript for interactivity.
Core Features
Element-based structure with opening and closing tags
Attributes to provide metadata and behavior
Nested elements for hierarchical structure
Doctype declaration for HTML versioning
Support for inline and block-level elements
Basic Concepts Overview
Tags: `<p>`, `<h1>`–`<h6>`, `<div>`, `<span>`
Attributes: `id`, `class`, `src`, `href`
Elements: opening and closing tags
Nested structure for parent-child relationships
Document hierarchy with `<html>`, `<head>`, `<body>`
Project Structure
index.html - main entry page
about.html - secondary pages
assets/ - images, videos, and media
css/ - linked style sheets
js/ - linked JavaScript files
Building Workflow
Create `.html` file in editor
Define document structure with `<html>`, `<head>`, `<body>`
Add content using headings, paragraphs, images, links
Test file in browser
Validate with HTML validators or developer tools
Difficulty Use Cases
Beginner: static web pages
Intermediate: HTML forms and tables
Advanced: semantic and accessible web pages
Expert: complex multi-page layouts with dynamic integration
Community: contributing to HTML5 and web standards
Comparisons
Simpler than programming languages like JavaScript or Python
Complementary with CSS and JS
Universal web standard, unlike proprietary formats
Lightweight compared to PDF or DOCX for web display
Essential for any web-based project
Versioning Timeline
1991 – HTML 1.0 released by Tim Berners-Lee
1995 – HTML 2.0 standardized by IETF
1997 – HTML 4.01 introduced
2014 – HTML5 became W3C Recommendation
2025 – HTML continues evolving with new web standards
Glossary
Tag: defines an element in HTML
Attribute: provides metadata or properties
Element: opening tag, content, and closing tag
DOM: Document Object Model, browser representation
Semantic HTML: tags that describe meaning