Transcript ModernJSDD_CH01

Modern JavaScript
Develop And Design
Instructor’s Notes
Chapter 1 - (Re) Introducing JavaScript
Modern JavaScript Design And Develop
Copyright © 2012 by Larry Ullman
Objectives
• Confidently know what JavaScript is and isn’t
• Learn JavaScript’s key attributes as a programming
language
• Review JavaScript’s history, both in terms of its
formal development and its common usage
• Be able to compare and contrast JavaScript against
other technologies and languages
• Know what it means to say a technology or language
is “client-side” vs. “server-side”
Objectives
• Understand how JavaScript fits into the Web
development process
• Know the main development approaches for
programming with JavaScript
• Be introduced to some popular JavaScript
frameworks
• Familiarize themselves with the common Web
browsers of today
• Be aware of what it means to be a “modern browser”
JavaScript is…
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Object-Oriented
Weakly typed
Scripting language
Based upon ECMAScript
Benefits
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Can improve performance
Can fix browser deficiencies
Can be used in mobile devices
Is entirely reliable, when done right!
Pushes some processing load onto the
client
• Able to enhance the user experience!
Key Developments
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Adoption of faster Internet access
Ajax
Better browsers
Rise of frameworks
Ajax
Common Browsers
Common Frameworks
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jQuery
MooTools
Script.aculo.us
YUI (Yahoo! User Interface library)
ExtJS
The Dojo Toolkit
Prototype
Client vs. Server
Client Side (Browser)
• HTML
• CSS
• JavaScript
• Flash
Server Side
• PHP
• CGI scripts
• Database
application
• Some JavaScript
Development Approaches
• Progressive Enhancement
• Unobtrusive JavaScript