HTML (HyperText Markup Language) is the standard language for creating web pages. It structures content using elements represented by tags.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>My Web Page</title>
</head>
<body>
<h1>Hello, World!</h1>
<p>This is a paragraph.</p>
</body>
</html>- Headings:
<h1>to<h6> - Paragraphs:
<p> - Links:
<a href="url">Link</a> - Images:
<img src="image.jpg" alt="Description"> - Lists:
<ul>,<ol>,<li> - Forms:
<form>,<input>,<button>
Use semantic tags for better accessibility and SEO:
<header>,<nav>,<main>,<section>,<article>,<footer>
- Always close tags properly.
- Use alt attributes for images.
- Structure content logically with headings and sections.
- Use semantic elements for screen readers.
- Add
aria-*attributes for extra context. - Ensure keyboard navigation for all interactive elements.
HTML forms collect user input. Use built-in validation attributes:
<form>
<label for="email">Email:</label>
<input type="email" id="email" name="email" required />
<button type="submit">Submit</button>
</form>- Use proper heading hierarchy (
<h1>,<h2>, ...). - Add meta tags for description and keywords.
- Use descriptive link text and image alt attributes.
<img src="cat.jpg" alt="A cute cat" />
<audio controls>
<source src="song.mp3" type="audio/mpeg" />
</audio>
<video controls>
<source src="movie.mp4" type="video/mp4" />
</video><table>
<thead>
<tr>
<th>Name</th>
<th>Age</th>
</tr>
</thead>
<tbody>
<tr>
<td>Alice</td>
<td>24</td>
</tr>
<tr>
<td>Bob</td>
<td>30</td>
</tr>
</tbody>
</table>- Geolocation: Get user location.
- Canvas: Draw graphics.
- LocalStorage: Store data in the browser.
- Use browser DevTools to inspect and edit elements.
- Validate your HTML with the W3C Validator.