HTML, or Hypertext Markup Language, is the standard markup language used for creating web pages and web applications. It serves as the foundational technology upon which the World Wide Web is built, providing the structure and content of web pages.
Structure and Syntax
HTML uses a system of tags and attributes to define elements within a document.
Basic Syntax
1<!DOCTYPE html>
2<html>
3<head>
4 <title>Page Title</title>
5</head>
6<body>
7 <h1>This is a Heading</h1>
8 <p>This is a paragraph.</p>
9</body>
10</html>
<!DOCTYPE html>
: Declares the document type and version.<html>
: The root element.<head>
: Contains meta-information about the document.<title>
: Sets the title of the document.<body>
: Contains the main content.
Common Tags
<h1>
to<h6>
: Heading tags.<p>
: Paragraph tag.<a>
: Anchor tag for hyperlinks.<div>
: Division container.<span>
: Inline container.<img>
: Image tag.<ul>
,<ol>
,<li>
: List tags.
Historical Context
HTML was created by Tim Berners-Lee in 1991, originally designed to facilitate the sharing of information among researchers. Since then, HTML has undergone numerous evolutions:
- HTML 2.0 (1995): The first standardized version by the IETF.
- HTML 3.2 (1997): Introduced more complex elements like tables.
- HTML 4.01 (1999): Added support for stylesheets and scripting.
- XHTML 1.0 (2000): A stricter, XML-based variant of HTML.
- HTML5 (2014): The current version, introducing semantic elements and APIs like
<video>
and<canvas>
.
Applicability and Use Cases
Web Development
HTML is the cornerstone of web development, often used in conjunction with CSS (Cascading Style Sheets) for styling and JavaScript for interactivity.
Web Applications
Modern web applications heavily rely on HTML5 features like offline storage, geolocation, and multimedia support.
Comparisons
HTML vs. XHTML
- HTML: More lenient syntactically.
- XHTML: Stricter, XML-based syntax.
HTML vs. Markdown
- HTML: Comprehensive and feature-rich for complex layouts.
- Markdown: Simplified syntax, mainly for text formatting.
Related Terms
- CSS (Cascading Style Sheets): A stylesheet language used for describing the presentation of a document written in HTML.
- JavaScript: A programming language that enables dynamic content and interactivity on web pages.
- DOM (Document Object Model): A programming interface for HTML, allowing scripts to update the content and structure.
FAQs
What is the difference between HTML and HTML5?
<article>
, <section>
, <nav>
), form controls, multimedia elements, and APIs.Why is HTML important?
Can I build a website with just HTML?
References
- W3C. “HTML & CSS.” W3C.
- MDN Web Docs. “HTML: Hypertext Markup Language.” MDN Web Docs.
- Berners-Lee, Tim. “Information Management: A Proposal.” March 1989.
Summary
HTML, or Hypertext Markup Language, is the core technology for creating web pages and web applications. Since its inception in 1991 by Tim Berners-Lee, it has evolved to provide a robust framework for the structure, presentation, and interaction of web content. Whether used alone or with complementary technologies like CSS and JavaScript, HTML remains indispensable to the web development ecosystem.