What Standards Dose Website Design Has?
What is web site standards?
Website standard is not a certain standard, but a gather of a series of standards. Web page mainly consists of three parts: Structure, Presentation and Behavior. Thus, the corresponding standards also comprise of three aspects: structural standard language mainly including the XHTML and XML, presentation standard language mainly including CSS, and behavior standard language that mainly includes object model (e.g W3C DOM, ECMAScript, etc). Most of them are devised and issued from W3C, some are formulated by other organization such as ECMAScript standard made by ECMA (European Computer Manufacturers Association). Let’s briefly know about those standards:
1.Standard language structure
XML is the abbreviation of The Extensible Markup Language. Currently, the recommendatory XML1.0 issued in October.6, 2000 is based on W3C, reference from (www.w3.org/TR/2000/REC-XML-20001006). Like HTML, XML is also derived from SGML, however, it is a sort of language to define other language. XML was initially design to make up for the deficiency of the HTML with powerful expansibility to meet requirements of network information release, whereafter, it is gradually used for network data transfer and description. As many information and books are accessible online for reference, XML advantages and its technical specifications will not be mentioned here.
XHTML is the abbreviation of The Extensible HyperText Markup Language. Currently, the recommendatory XML1.0 issued in January 26, 2000 is based on W3C, reference from (http://www.w3.org/TR/xhtml1). Although XML has powerful data transfer ability that can completely replace HTML, it’s still earlier just to directly adopt XML when confronted with millions of websites. Consequently, we should make use of XML regulation to expand on basis of HTML4.0 to obtain XHTML. In a nutshell, XHTML establishment is to achieve the transition from HTML to XML.
2. Presentation standard language
CSS is short for Cascading Style Sheets. Currently, the recommendatory CSS2 issued in May12, 1998 is based on W3C, (please refer to http://www.w3.org/TR/CSS2/). The aim to establish CSS standard is to replace HTML’s tabular layout, frame and other types of presentation languages, Smooth combination between pure CSS layout and structural XHTML will help designer to separate appearance and structure, facilitating site’s visit and maintenance.
3. Behavior standard language
ECMAScript: is a standard javascrip promulgated by ECMA (European Computer Manufacturers Association). At present, ECMAScript 262 is recommended.