JavaScript is the de facto programming language for developing browser-based web applications that provide the rich functionality traditionally associate with desktop applications (commonly referred to as Web 2.0 applications). This class explains the JavaScript language in terms familiar to a Java Technology Developer, or a developer familiar with other object-oriented langugages, such as C++. Additionally, you will learn tips and tricks for developing web applications that leverage best practices for using client-side JavaScript, and especially the Ajax technique, to provide a richer and more responsive user experience than can be achieved by server-side logic alone.

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ILT

Java Developers who create Web Applications. Web Application Developers familiar with other object-oriented languages.

To succeed fully in this course, students should be able to:

• Write Java Applications
• Write a simple web page

List significant differences between the syntax and semantics of the JavaScript language and Java language

• Avoid bugs cause by ignorance of the differences between objects in the prototype-based JavaScript language and the class-based Java language
• Use Object Literals to bring best practice techniques of Object-Oriented Programming to your JavaScript code
• Use constructor functions, instead of class files, dynamically change the behavior or structure of any object in your JavaScript program
• Leverage prototypal inheritance to mutate objects, including the standard built-in objects, even after they have been instantiated
• Increase the performance and efficiency of your JavaScript code
• Recognize a closure in JavaScript code and explain when it is advantageous when to use a closure

Module 1 - JavaScript for Java Developers

• The JavaScript Language
• JavaScript Objects
• Arrays extend Object with an integer index
• Strings extend Object with an a string value
• Functions extend Object with a JavaScript function body
• JavaScript and the Document Object Model (DOM)
• Additional Information

• Introducing Ajax
• Programming With Ajax
• Introducing JSON
• Programming with JSON
• Alternatives to using the XMLHttpRequest object
• Ajax Security
• JavaScript Recommendations