HTML (Hypertext Markup Language)
HTML (Hypertext Markup Language) is the standard markup language used for creating web pages and web applications. It provides a structure for organizing and presenting content on the internet. Here's some basic knowledge about HTML:
1. **Tags** :
HTML consists of a series of tags that define the structure and elements of a web page. Tags are enclosed in angle brackets (`<>`) and come in pairs (opening and closing tags), although some tags are self-closing. Examples of tags include `<html>`, `<head>`, `<body>`, `<p>`, `<h1>`, `<img>`, etc.
2. **Elements**:
Elements are created by using HTML tags. They represent different types of content such as headings, paragraphs, images, links, lists, tables, forms, etc. Elements can have attributes that provide additional information about them, such as the `src` attribute for specifying the source of an image.
3. **Document Structure**:
An HTML document typically starts with a `<!DOCTYPE>` declaration, followed by the `<html>` element, which contains the entire document. The document is divided into `<head>` and `<body>` sections. The `<head>` section includes meta-information, title, and links to external resources, while the `<body>` section contains the visible content of the webpage.
4. **Headings**:
HTML provides six levels of headings (`<h1>` to `<h6>`) that represent different levels of importance. `<h1>` is the highest level and is usually used for the main heading of the page, while `<h2>` to `<h6>` are used for subheadings.
5. **Paragraphs**:
Paragraphs are created using the `<p>` tag. They represent blocks of text and are automatically separated by line breaks.
6. **Links**:
Links allow users to navigate between different web pages. They are created using the `<a>` (anchor) tag and require an `href` attribute to specify the target URL. For example: `<a href="https://www.example.com">Visit Example</a>`.
7. **Images**:
Images are inserted using the `<img>` tag. The `src` attribute specifies the source URL of the image, and the `alt` attribute provides alternative text that is displayed if the image cannot be loaded. Example: `<img src="image.jpg" alt="Description of the image">`.
8. **Lists**:
HTML supports both ordered and unordered lists. Unordered lists are created using the `<ul>` tag, and list items are created with the `<li>` tag. Ordered lists use the `<ol>` tag instead of `<ul>`. Example:
```
<ul>
<li>Item 1</li>
<li>Item 2</li>
</ul>
```
9. **Tables**:
Tables are created using the `<table>` tag, with rows represented by the `<tr>` tag and cells within the row using the `<td>` or `<th>` tags for data cells and header cells, respectively.
10. **Forms**:
HTML provides form elements such as `<input>`, `<textarea>`, `<select>`, and `<button>` for creating interactive forms on web pages. Users can input data, make selections, and submit the form to a server for processing.
These are just some basic concepts of HTML. HTML also allows you to apply CSS (Cascading Style Sheets) for styling and JavaScript for interactivity, among many other features and elements.
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