HTML5 tutorial - glossary

Application Programming Interface - APIs are how HTML5 will realize its full potential.
alt or alternative text
The alt attribute in the image element (<img>) specifies an alternate text for an image.
wikipedia · w3schools
A group of binary digits or bits (usually eight) operated on as a unit.

  • 1 byte = 8 bits (b)
  • 1024 bytes = 1 Kilobytes (kB)
  • 10242 bytes = 1 Megabyte (MB)
  • 10243 bytes = 1 Gigabyte (GB)
  • 10244 bytes = 1 Terabyte (TAB)
A statically typed, free-form, multi-paradigm, compiled, general-purpose programming language.
google · wikipedia
CSS or Cascading Style Sheets
Cascading Style Sheets (CSS) is a style sheet language used to describe the presentation semantics (the look and formatting) of a document written in a markup language such as HTML.
w3schools · wikipedia
Cross-browser capability allows a website or web application to be properly rendered by all browsers.
What most know as a "tag" WHATWG and W3C call an "element". I have adopted the common practice of using them interchangeably when in fact I probably shouldn't. Actually an "element" has opening and closing "tags". For example the p "element" has an opening "tag": <p> and a closing "tag": </p>.
The search bot software used by Google, which collects documents from the web to build a searchable index for the Google search engine.
wikipedia · google
Hosting service
Web hosting services "hosts" web sites on servers to make them accessible to the world via the Web.
Hyperlink or Link
A clickable navigation element on a webpage. The most common destination anchor is a URL used in the World Wide Web.
wikipedia ·
Hypertext Markup Language - history
Hypertext Markup Language ver. 5
google · wikipedia ·
index.html or index.htm or homepage
When an HTTP client (generally a Web browser) requests a URL that points to a directory structure instead of an actual Web page within the directory, the Web server will generally serve a general page, which is often referred to as a main or "index" page.
wikipedia · wikipedia
Internet Protocol or IP address
The Internet Protocol (IP) is the method or protocol by which data is sent from one computer to another on the Internet.
wikipedia · techtarget
A scripting programming language most commonly used to add interactive features to webpages. · wikipedia
Kilobyte or kB
A unit of memory or data equal to 1,024 bytes.
Markup Language
A markup language is a language that annotates text so that the computer can manipulate the text. · wikipedia
A voiceband modem turns the digital data of a personal computer into analog audio signals that can be transmitted over a telephone line.
PHP is a general-purpose server-side scripting language originally designed for Web development to produce dynamic Web pages.
wikipedia ·
Short for "picture element", a pixel is a single point in a graphic image.
wikipedia· webopedia
Programming Language
A programming language is an artificial language designed to communicate instructions to a computer.
Search Engine Optimization – designing pages to rank high in search engine results.
wikipedia · google
A computer where you store a Web site, usually rented from a hosting service.
Source Code
To view a page's source code in IE on a PC click "View" and then "Source" and the code should open in a new window. Select it all, copy it and paste it into Notepad or some text editor. In Firefox click "View" and then "Page Source" and it should open in a new window. If you have any problems or are in a different browser search "source code" in help.
Style sheet
Web style sheets are a form of separation of presentation and content for web design in which the markup (i.e., HTML or XHTML) of a webpage contains the page's semantic content and structure, but does not define its visual layout (style).
Universal Character Set
The Universal Character Set, defined by the International Standard ISO/IEC 10646, Information technology – Universal multiple-octet coded character set is a standard set of characters upon which many character encodings are based.
google · wikipedia · oxford
UNIX is a multitasking, multi-user computer operating system originally developed in 1969 by a group of AT&T employees.
URL or Uniform Resource Locator
A Uniform Resource Locator (URL) specifies where an identified resource is available and the mechanism for retrieving it.
wikipedia ·
The World Wide Web Consortium (W3C) is the main international standards organization for the World Wide Web. · wikipedia ·
web browser or user agent
e.g. Mosaic, Netscape, IE, Firefox, Chrome, Safari etc.
google · wikipedia
The Web Hypertext Application Technology Working Group, or WHATWG, is a community of people interested in evolving HTML and related technologies. · wikipedia ·
"What You See Is What You Get" - HTML editors in which one creates the page visually and the editor generates the code.
Extensible Markup Language
wikipedia ·