LEARN DREAMWEAVER CS3

What you’ll learn in this lesson:

• Exploring Dreamweaver’s primary features
• Introducing new features in CS3
• Understanding how web sites and web pages work
• Coding HTML/XHTML: the basics

Dreamweaver CS3 Jumpstart

Whether you are a novice web designer or an experienced developer, Dreamweaver is a comprehensive tool you can use for site design, layout, and management. In this lesson, you’ll take a tour of Dreamweaver’s key features and get a better understanding of how web pages work.

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LEARN ADOBE PHOTOSHOP CS3

What you’ll learn in this lesson:

• Merging images
• Using Smart Filters
• Using the new
  selection tools
• Working with text
• Using unsharp masking
• Using Camera Raw

What’s New in Adobe Photoshop CS3?

Welcome to Photoshop CS3! In this lesson, you’ll get a look at many of the new features, such as easier-to-use selection tools, improved Vanishing Point, and Live Filter. You will also explore these features in more detail in the lessons that follow.

A different Photoshop for different users

In this release of Photoshop, there are two versions: Photoshop CS3 and Photoshop CS3 Extended. Don’t worry about one being better than the other; that is not necessarily true. Photoshop CS3 in any flavor is a full, digital editing application. Photoshop CS3 Extended includes additional features geared toward industries such as multimedia, animation, film, architecture, engineering construction (AEC), manufacturing, and medical professions. In this lesson, the features mentioned are included in both Photoshop CS3 and Photoshop CS3 Extended.

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INTRODUCTION JAVA SCRIPT

JavaScript is used in millions of Web pages to improve the design, validate forms, detect browsers, create cookies, and much more.

JavaScript is the most popular scripting language on the internet, and works in all major browsers, such as Internet Explorer, Firefox, and Opera.

What You Should Already Know

Before you continue you should have a basic understanding of the following:

* HTML / XHTML

If you want to study these subjects first, find the tutorials on our Home page.

What is JavaScript?

* JavaScript was designed to add interactivity to HTML pages
* JavaScript is a scripting language
* A scripting language is a lightweight programming language
* JavaScript is usually embedded directly into HTML pages
* JavaScript is an interpreted language (means that scripts execute without preliminary compilation)
* Everyone can use JavaScript without purchasing a license

Are Java and JavaScript the Same?

NO!

Java and JavaScript are two completely different languages in both concept and design!

Java (developed by Sun Microsystems) is a powerful and much more complex programming language - in the same category as C and C++.

What can a JavaScript Do?

* JavaScript gives HTML designers a programming tool - HTML authors are normally not programmers, but JavaScript is a scripting language with a very simple syntax! Almost anyone can put small "snippets" of code into their HTML pages
* JavaScript can put dynamic text into an HTML page - A JavaScript statement like this: document.write("

" + name + "

") can write a variable text into an HTML page
* JavaScript can react to events - A JavaScript can be set to execute when something happens, like when a page has finished loading or when a user clicks on an HTML element
* JavaScript can read and write HTML elements - A JavaScript can read and change the content of an HTML element
* JavaScript can be used to validate data - A JavaScript can be used to validate form data before it is submitted to a server. This saves the server from extra processing
* JavaScript can be used to detect the visitor's browser - A JavaScript can be used to detect the visitor's browser, and - depending on the browser - load another page specifically designed for that browser
* JavaScript can be used to create cookies - A JavaScript can be used to store and retrieve information on the visitor's computer

The Real Name is ECMAScript

JavaScript's official name is "ECMAScript". The standard is developed and maintained by the ECMA organisation.

ECMA-262 is the official JavaScript standard. The standard is based on JavaScript (Netscape) and JScript (Microsoft).

The language was invented by Brendan Eich at Netscape (with Navigator 2.0), and has appeared in all Netscape and Microsoft browsers since 1996.

The development of ECMA-262 started in 1996, and the first edition of was adopted by the ECMA General Assembly in June 1997.

The standard was approved as an international ISO (ISO/IEC 16262) standard in 1998.

The development of the standard is still in progress.



JavaScript How To


The HTML



The code above will produce this output on an HTML page:
Hello World!
Example Explained

To insert a JavaScript into an HTML page, we use the tells where the JavaScript starts and ends:

The word document.write is a standard JavaScript command for writing output to a page.

By entering the document.write command between the tags, the browser will recognize it as a JavaScript command and execute the code line. In this case the browser will write Hello World! to the page:
Example

Try it yourself

Note: If we had not entered the



The two forward slashes at the end of comment line (//) is the JavaScript comment symbol. This prevents JavaScript from executing the --> tag.



Where to Put the JavaScript

JavaScripts in a page will be executed immediately while the page loads into the browser. This is not always what we want. Sometimes we want to execute a script when a page loads, other times when a user triggers an event.

Scripts in the head section: Scripts to be executed when they are called, or when an event is triggered, go in the head section. When you place a script in the head section, you will ensure that the script is loaded before anyone uses it.

Scripts in the body section: Scripts to be executed when the page loads go in the body section. When you place a script in the body section it generates the content of the page.

Scripts in both the body and the head section: You can place an unlimited number of scripts in your document, so you can have scripts in both the body and the head section.

Using an External JavaScript

Sometimes you might want to run the same JavaScript on several pages, without having to write the same script on every page.

To simplify this, you can write a JavaScript in an external file. Save the external JavaScript file with a .js file extension.

Note: The external script cannot contain the





Note: Remember to place the script exactly where you normally would write the script!