1. Markup Language: HTML is a markup language, not a programming language. It uses tags to structure content and provide information about how content should be displayed in a web browser.
2. Structure: HTML documents are organized into a hierarchical structure consisting of elements, which are enclosed in opening and closing tags. Elements define the structure and semantics of the content.
3. Tags: HTML tags are keywords enclosed in angle brackets (e.g.,
<tag>). Tags are used to create elements, such as headings (
<h6>), paragraphs (
<p>), links (
<a>), images (
<img>), and many more.
4. Attributes: HTML tags can have attributes, which provide additional information about an element. Attributes are typically defined within the opening tag and provide details like the source of an image, the destination of a link, or the styling of an element.
5. Semantic Markup: HTML supports semantic markup, which means that elements have a specific meaning that conveys the purpose of the content. For example, the
<article> elements have semantic meaning beyond their visual appearance.
6. Web Page Structure: A typical HTML document has a structure that includes the following key elements:
<!DOCTYPE> declaration: Specifies the document type and version of HTML.
<html> element: The root element that wraps all content.
<head> element: Contains metadata and links to external resources.
<title> element: Defines the title of the web page.
<meta> element: Provides metadata about the web page.
<style> elements: Include CSS for styling.
<body> element: Contains the visible content of the web page.
7. Hyperlinks: HTML allows you to create hyperlinks using the
<a> element, which connects web pages, resources, and other content on the internet.
8. Images and Multimedia: You can embed images and multimedia content, such as audio and video, using the
9. Forms: HTML supports the creation of interactive forms using elements like
<select>, and `<button>. Forms allow users to submit data to web servers, which is commonly used for search boxes, login forms, and online surveys.
10. Accessibility: Web accessibility is a key consideration in HTML. Semantic HTML, proper use of headings, alt attributes for images, and ARIA (Accessible Rich Internet Applications) roles and attributes contribute to making web content accessible to all users.
11. Version Evolution: HTML has evolved over the years, with various versions. HTML5 is the most recent and widely adopted version, introducing many new features and elements for modern web development.