Transcript HTML
HTML 4.01 Student: Ling Liao 2003.9.22 1 Overview Introduction An example of HTML Problems of HTML Summary 2 What is HTML? The Hypertext Markup Language (HTML) is a simple markup language used to create hypertext documents that are platform independent. 3 A Brief History of HTML HTML was originally developed by Tim Berners Lee while at CERN, and popularized by the Mosaic browser developed at NCSA. During the course of the 1990s it has blossomed with the explosive growth of the Web. During this time, HTML has been extended in a number of ways. CERN: European Laboratory for Particle Physics 4 Previous Versions of HTML HTML 2.0 It was developed by the IETF's HTML Working Group, which closed in 1996.It sets the standard for core HTML features based upon current practice in 1994. IETF: Internet Engineering Task Force 5 Previous Versions of HTML HTML 3.2 It added widely-deployed features such as tables, applets, text-flow around images, superscripts and subscripts, while providing backwards compatibility with the existing HTML 2.0 Standard. 6 Previous Versions of HTML HTML 4.0 It extends HTML with mechanisms for style sheets, scripting, frames, embedding objects, improved support for right to left and mixed direction text, richer tables, and enhancements to forms, offering improved accessibility for people with disabilities. 7 What we can do by using HTML Publish online documents with headings, text, tables, lists, photos, etc. Find online information via hypertext links. Include spread-sheets, video clips, sound clips, and other applications directly in their documents. 8 What we can do by using HTML Design forms for conducting transactions with remote services, for use in searching for information, making reservations, ordering products, etc. 9 HTML Containers <HTML>------------------------------container1 <HEAD>----------------- container2 </HEAD>----------------- container2 <BODY>---------- container3 </BODY>--------- container3 </HTML>-------------------------------- container1 10 Problems of HTML A similar HTML source was displayed in different ways depending on what browser was used. Some browser manufactures developed HTML facilities which were not recognized by other browsers. It was almost impossible to discern any semantics within a web page. 11 Summary Definition of HTML Use of HTML Example of HTML Problems of HTML Any questions? 12 Reference(1) Darrel Ince: Developing Distributed and Ecommerce Applications Addison Wesley, 2002 Web Design Tools and Techniques Peter Kentie, 2002 http://www.w3.org/TR/REChtml40/intro/intro.html#h-2.2 13 Reference(2) http://ftp.ics.uci.edu/pub/ietf/html/ http://www.lib.tsinghua.edu.cn/chinese/IN TERNET/HTML/Table/html_design.html http://www.w3.org/MarkUp/ 14