Web designing
Web design is a broad term used to encompass the way that content is delivered to an end-user through the World Wide Web, using a web browser (e.g. Internet Explorer, Firefox, Google Chrome, Safari) or other web-enabled software to display the content. The intent of web design is to create a website—a collection of online content including documents and applications that reside on a web server/servers. A website may include text, images, sounds and other content, and may be interactive.
Such elements as text, forms, images (GIFs, JPEGs, PNGs) and video can be placed on the page using HTML/XHTML/XML tags. Some browsers may require Plug-ins such as Adobe Flash, QuickTime, Java run-time environment, etc. to display some media, which are embedded into web page by using HTML/XHTML tags.
Improvements in browsers' compliance with W3C standards prompted a widespread acceptance and usage of XHTML/XML in conjunction with Cascading Style Sheets (CSS) to position and manipulate web page elements and objects.
Typically web pages are classified as static or dynamic:
Static pages don’t change content and layout with every request unless a human (web master/programmer) manually updates the page. A simple HTML page is an example of static content.
Dynamic pages adapt their content and/or appearance depending on end-user’s input/interaction or changes in the computing environment (user, time, database modifications, etc.) Content can be changed on the client side (end-user's computer) by using client-side scripting languages (JavaScript, JScript, Actionscript, etc.) to alter DOM elements (DHTML). Dynamic content is often compiled on the server utilizing server-side scripting languages (Perl, PHP, ASP, JSP, ColdFusion, etc.). Both approaches are usually used in complex applications.
This definition separates web design from web programming, emphasizing the functional features of a web site, as well as positioning web design as a kind of graphic design.[1] The process of designing web pages, web sites, web applications or multimedia for the Web may utilize multiple disciplines, such as animation, authoring, communication design, corporate identity, graphic design, human-computer interaction, information architecture, interaction design, marketing, photography, search engine optimization and typography.
Markup languages (such as HTML, XHTML and XML)
Style sheet languages (such as CSS and XSL)
Client-side scripting (such as JavaScript)
Server-side scripting (such as PHP and ASP)
Database technologies (such as MySQL and PostgreSQL)
Multimedia technologies (such as Flash and Silverlight)
It is very important that several different components of web development and interaction can work together in order for the Web to be accessible to people with disabilities. These components include:
content - the information in a web page or web application, including:
natural information such as text, images, and sounds
code or markup that defines structure, presentation, etc.
Web browsers, media players, and other "user agents"
assistive technology, in some cases - screen readers, alternative keyboards, switches, scanning software, etc.users' knowledge, experiences, and in some cases, adaptive strategies using the Web
developers - designers, coders, authors, etc., including developers with disabilities and users who contribute content , authoring tools - software that creates web sites
evaluation tools - web accessibility evaluation tools, HTML validators, CSS validators, etc.