HTML Overview
1. Introduction to HTML
History of HTML: HTML (HyperText Markup Language) was first introduced by Tim Berners-Lee in
1993 as a markup language for creating web pages.
Characteristics of HTML: HTML is the standard language for creating and structuring content on the
web. It defines the structure of web pages using elements and tags.
HTML vs XHTML: HTML is flexible and forgiving, while XHTML is a stricter version of HTML,
requiring all tags to be properly closed and nested.
2. Basic HTML Elements
HTML Tags: HTML elements are represented by tags, such as <h1> for headings, <p> for
paragraphs, <a> for links, and <img> for images.
Attributes: HTML elements can have attributes that provide additional information, such as id, class,
src, and href.
HTML Document Structure: A basic HTML document consists of a DOCTYPE declaration, followed
by <html>, <head>, and <body> elements.
3. Forms and Input Elements in HTML
HTML Forms: Forms are used to collect user input and include form elements like <input>,
<textarea>, <select>, and <button>.
Form Validation: HTML provides attributes like required and pattern to perform client-side form
validation.
Form Methods: Forms can use GET or POST methods to send data to a server for processing.
4. HTML Links and Media
Hyperlinks: Links in HTML are created using the <a> tag, and the href attribute specifies the target
URL.
Images: Images can be embedded using the <img> tag, with the src attribute specifying the image
file location.
1. Introduction to HTML
History of HTML: HTML (HyperText Markup Language) was first introduced by Tim Berners-Lee in
1993 as a markup language for creating web pages.
Characteristics of HTML: HTML is the standard language for creating and structuring content on the
web. It defines the structure of web pages using elements and tags.
HTML vs XHTML: HTML is flexible and forgiving, while XHTML is a stricter version of HTML,
requiring all tags to be properly closed and nested.
2. Basic HTML Elements
HTML Tags: HTML elements are represented by tags, such as <h1> for headings, <p> for
paragraphs, <a> for links, and <img> for images.
Attributes: HTML elements can have attributes that provide additional information, such as id, class,
src, and href.
HTML Document Structure: A basic HTML document consists of a DOCTYPE declaration, followed
by <html>, <head>, and <body> elements.
3. Forms and Input Elements in HTML
HTML Forms: Forms are used to collect user input and include form elements like <input>,
<textarea>, <select>, and <button>.
Form Validation: HTML provides attributes like required and pattern to perform client-side form
validation.
Form Methods: Forms can use GET or POST methods to send data to a server for processing.
4. HTML Links and Media
Hyperlinks: Links in HTML are created using the <a> tag, and the href attribute specifies the target
URL.
Images: Images can be embedded using the <img> tag, with the src attribute specifying the image
file location.
