HTML Introduction
HTML(Hypertext Markup Language) is the standard Markup Language used for creating web pages and applications. It provides the structure and presentation of content on the World Wide Web. HTML uses a series of elements and tags to define the different parts of a webpage.
Here is basic introduction to HTML:
1. Document Structure: An HTML document starts with a document type declaration (`<!DOCTYPE html>`) that specifies the HTML version being used. The entire document is wrapped in an `<html>` element, and it consists of two main sections: the `<head>` and the `<body>`.
2. Head Section: The `<head>` section contains meta-information about the document, such as the page title (`<title>`), character encoding (`<meta charset="UTF-8">`), CSS stylesheets (`<link rel="stylesheet" href="styles.css">`), or JavaScript files (`<script src="script.js"></script>`).
3. Body Section: The `<body>` section contains the visible content of the webpage. It consists of various HTML elements that define the structure and layout of the page, including headings (`<h1>`, `<h2>`, etc.), paragraphs (`<p>`), images (`<img>`), links (`<a>`), lists (`<ul>`, `<ol>`, `<li>`), tables (`<table>`, `<tr>`, `<td>`), forms (`<form>`, `<input>`, `<button>`), and more.
4. Element Structure: HTML elements are represented by tags, which are enclosed in angle brackets (`<` and `>`). Most elements have an opening tag and a closing tag, with the content placed between them. For example, `<p>Hello, World!</p>` defines a paragraph element with the text "Hello, World!".
5. Attributes: HTML elements can have attributes that provide additional information about the element. Attributes are specified within the opening tag and consist of a name-value pair. For instance, `<img src="image.jpg" alt="Description of the image">` uses the `src` attribute to specify the image source file and the `alt` attribute to provide an alternative text for screen readers.
6. Nesting and Hierarchy: HTML elements can be nested inside other elements, creating a hierarchical structure. For example:
html
<div>
<h1>Heading</h1>
<p>Paragraph</p>
</div>Here, the `<h1>` and `<p>` elements are nested within the `<div>` element.
7. Semantic HTML: HTML5 introduced semantic elements that give meaning to the structure of a webpage. These elements, such as `<header>`, `<nav>`, `<section>`, `<article>`, `<footer>`, etc., help search engines and assistive technologies better understand the content and improve accessibility.
This is just a basic overview of HTML. There are many more elements, attributes, and concepts to explore as you delve deeper into web development. HTML is often used in conjunction with CSS (Cascading Style Sheets) to define the visual appearance of a webpage, and JavaScript to add interactivity and dynamic behavior.
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