What is HTML?
HTML is a markup language for describing web documents (web pages).
- HTML stands for Hyper Text Markup Language
- A markup language is a set of markup tags
- HTML documents are described by HTML tags
- Each HTML tag describes different document content
-The DOCTYPE declaration defines the document type to be HTML
-The text between <html> and </html> describes an HTML document
-The text between <head> and </head> provides information about the document
-The text between <title> and </title> provides a title for the document
-The text between <body> and </body> describes the visible page content
-The text between <h1> and </h1> describes a heading
-The text between <p> and </p> describes a paragraph
Using this description, a web browser can display a document with a heading and a paragraph.
HTML tags are keywords (tag names) surrounded by angle brackets:<tagname>content</tagname>
-HTML tags normally come in pairs like <p> and </p>
-The first tag in a pair is the start tag, the second tag is the end tag
-The end tag is written like the start tag, but with a slash before the tag name
-All HTML documents must start with a type declaration: <!DOCTYPE html>.
-The HTML document itself begins with <html> and ends with </html>.
-The visible part of the HTML document is between <body> and </body>:
<h1>My First Heading</h1>
<p>My first paragraph.</p>
-HTML headings are defined with the <h1> to <h6>: <h1>This is a heading</h1>
-HTML paragraphs are defined with the <p> tag: <p>This is a paragraph.</p>
-HTML links are defined with the <a> tag: <a href=“http://www.w3schools.com”>This is a link</a>
-HTML images are defined with the <img> tag.
-The source file (src), alternative text (alt), and size (width and height) are provided as attributes: <img src=“w3schools.jpg” alt=“W3Schools.com” width=“104” height=“142”>