Adobe Photoshop 7.0 Design Professional

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(No Transcript)
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Chapter Concepts

• OVERVIEW

• Review Markup Languages
• Examine Scripting Languages and Scripting
  Environments
• Explore Programming Languages

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Introduction

• INTRODUCTION

• Today, Web developers and programmers must have
  skills using markup, scripting, and programming
  languages
• Web server The computer on which the files for
  Web pages are stored
• Web client The computer from which the user
  views the pages on a Web browser

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Introduction

• INTRODUCTION

• When your Web page includes access to a script or
  program stored on a Web server, information must
  be sent from the Web client back to the Web
  server for processing, storage, and later
  retrieval
• Scripting and programming make the task of
  developing and maintaining Web sites easier

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Introduction

• INTRODUCTION

• Web developers design templates and then access
  the content dynamically through a database
• Markup, scripting, and programming languages make
  a multimedia Web site more interactive and more
  interesting

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Review Markup Languages

• CONCEPT 1

• Markup language Full set of instructions used to
  comprehensively describe the structural format of
  a piece of text or other media element
• Standard Generalized Markup Language (SGML)
  Standard for defining the most common markup
  languages

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SGML

• CONCEPT 1

• SGML Consistent and precise method of applying
  markup tags so that electronic documents can be
  exchanged and revised between different computer
  systems
• SGML itself is not a markup language rather the
  standard on which the most common markup
  languages are based

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HTML/XHTML

• CONCEPT 1

• Hypertext Markup Language (HTML) Standard markup
  language used to create Web pages
• Continues to develop and evolve based on the
  controls set by the World Wide Web Consortium
• Extensible (XHTML) Provides support for XML
  stricter in structure and syntax than previous
  versions of HTML

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DHTML

• CONCEPT 1

• Dynamic Hypertext Markup Language (DHTML) Group
  of technologies used to create greater
  interactivity and page layout flexibility than is
  possible with XHTML alone
• Includes XHTML, JavaScript, Cascading Style
  Sheets (CSS), and the Document Object Model (DOM)

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DHTML

• CONCEPT 1

• DHTML All major Web browsers support DHTML, but
  differ in terms of what each considers acceptable
  syntax and scripting code

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VR

• CONCEPT 1

• Virtual reality (VR) on the Web is created using
  the Virtual Reality Modeling Language (VRML)
  (pronounced ver-mal)
• VRML Simple and accessible way to create
  interactive worlds using 3-D graphics on the Web
• QuickTime VR One of the most popular tools for
  creating virtual reality

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SMIL

• CONCEPT 1

• Synchronized Multimedia Integration Language
  (SMIL) Offers control over synchronized
  multimedia by allowing individual components
  (such as audio, video, and graphics) to be played
  in relation to one another
• SMILs text-based format also makes editing
  Web-based multimedia applications easy

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XML

• CONCEPT 1

• Extensible Markup Language (XML) is a markup
  language, but it is also a metalanguage
• XML defines the datas actual content, meaning,
  or use
• By using XHTML and XML together, formatting can
  be separated from the content

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XML

• CONCEPT 1

• Same XML source document can be written once,
  then displayed in a variety of ways
• Allows documents to be viewed by various browsers
  without having to be specifically rewritten for
  each one

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XML

• CONCEPT 1

• Because an XML file will work on any
  communications device, it wont become obsolete
  as hardware and communications devices evolve
• XML provides a way for databases from different
  vendors to exchange information across the
  Internet
• XML is having a dramatic impact on the Web page
  development process

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WML

• CONCEPT 1

• Wireless Markup Language (WML) Based on the
  Handheld Device Markup Language (HDML), which in
  turn is a subset of HTML
• WML is the current standard for Web delivery on
  wireless handheld devices
• WML is read and interpreted by a microbrowser
  that is built in to a wireless handheld device

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Scripting Languages

• CONCEPT 2

• Scripts extend the capabilities of XHTML
• Scripting languages are not as powerful as
  programming languages
• It is important to test Web pages that contain
  scripts to ensure that they function as intended

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JavaScript

• CONCEPT 2

• JavaScript Object-oriented scripting language
  developed by Netscape to extend the capabilities
  of HTML
• Object-oriented scripting language Programmers
  describe data and procedures in terms of objects,
  methods, and properties

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JavaScript

• CONCEPT 2

• JavaScript and Java are very different in their
  capabilities and execution
• JavaScript adds interactivity and dynamic content
  to Web pages
• Cookies store data on the Web client
• JavaScript has been updated and extended to
  support newer browser capabilities

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JavaScript

• CONCEPT 2

• JavaScript can do the following
• Add scrolling messages
• Open a new pop-up window
• Verify data input from forms
• Create animation and dynamic images
• Insert mouse rollovers
• Create and read cookies
• Display the current date and time

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Visual Basic

• CONCEPT 2

• Microsoft VBScript is a script version of
  Microsoft Visual Basic (VB) programming language
• VBScript is not cross platform its popularity on
  the client-side of the Web is limited
• VBScript Primary scripting language used for
  Active Server Pages (ASP)

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Java Server Pages

• CONCEPT 2

• Java Server Pages (JSP) Similar to ASP, is the
  Java-based technology for generating dynamic Web
  pages with cross-platform and cross-Web-server
  support
• The JSP environment is not a scripting language
  and therefore it is not the same as JavaScript

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PHP

• CONCEPT 2

• PHP (officially PHP Hypertext Preprocessor) is a
  server-side scripting language for creating
  dynamic Web page components
• PHP is open source and runs on multiple platforms
• Use PHP to set cookies, manage authentication,
  and redirect users

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Explore ProgrammingLanguages

• CONCEPT 3

• Programming for Web page development is used to
  write programs that are accessed or called from
  an XHTML file
• They extend the capabilities of a Web page beyond
  what is possible with markup and scripting
  languages

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Explore ProgrammingLanguages

• CONCEPT 3

• If you need to store information in a server
  database or provide customized Web pages,
  server-side scripts or programs are usually the
  better solution
• Often a combination of both client-side scripts
  and server-side scripts/programs are needed

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PERL

• CONCEPT 3

• Practical Extraction and Report Language (Perl)
  is a powerful and flexible programming language
• Many server-side programs are created in Perl
• Powerful for manipulating text
• Handles encrypted Web data, including e-commerce
  transactions

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Java

• CONCEPT 3

• Java Sun Microsystemss full-fledged,
  object-oriented programming language
• Applets Small programs designed to be executed
  within another application or from a Web page

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Java

• CONCEPT 3

• Before Java code can be run, it has to be
  processed by a special program to create an
  executable file or a Java applet
• Web browser loads the applet or the executable
  file has special built-in engine that can
  execute this file and display the output on the
  page

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Visual Basic

• CONCEPT 3

• Visual Basic Considered a high-level programming
  language, which means that almost all of the
  commands are English derivatives
• Visual Basic includes many features specifically
  designed for database development and integration
  as well as the creation of server-side application

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C

• CONCEPT 3

• C (pronounced C sharp) Modern,
  object-oriented language that enables programmers
  to quickly build a wide range of applications for
  the Microsoft .Net platform
• Incorporates the best of C, Visual Basic, C,
  and Java
• Offers the optimum productivity that Web
  developers need

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ActiveX

• CONCEPT 3

• ActiveX Extension of object linking and
  embedding (OLE) create objects with one
  application and then link or embed them in
  another
• Works best in a Windows environment
• Fine for intranets, where the platform is likely
  to be more consistent or at least more
  controllable

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Summary

• SUMMARY

• Review Markup Languages
• SGML
• HTML/XHTML
• DHTML
• VR
• SMIL
• XML

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Summary

• SUMMARY

• WML
• Scripting Languages
• JavaScript
• Visual Basic
• Java Server Pages
• PHP

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Summary

• SUMMARY

• Explore ProgrammingLanguages
• PERL
• Java
• Visual Basic
• C
• ActiveX