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Contents:
[Contents] [Tutorial]
[Object
Hierrachy] [Language]
[Expressions]
[Statements]
Introduction
The tutorial hopes to teach JavaScript programming to people who
have good knowledsge of HTML, but no programming experience whatsoever.
Bowsers And JavaScript
Some browsers are better at JavaScript than others. JavaScript
is still evolving, and some features are only available in very
recent releases. Netscape 3 and Microsoft IE 3 both perform well.
[Contents] [Tutorial]
[Object
Hierrachy] [Language]
[Expressions]
[Statements]
Why JavaScript?
Most fat applications support some form of scripting. Word processors,
spreadsheets, databases all now come with the ability to write "macros"
or scripts. They allow programming to be embeded in a document (whether
the "document" is a database or a spreadsheet is irrelevant).
Scripting languages can be described as a "glue" which
allows various system components to be managed.
HTML defines a document type, but does not have any scripting as
such. Enter JavaScript.
JavaScript allows Browser windows to be opened, document contents
to be created (or generated), and most importantly, JavaScript can
be used to effectively tie together all the components needed to
make an HTML page truly interactive (buttons, edit boxes, popups,
Java Applets ....).
On these points alone, JavaScript is worth investigating.
[Contents] [Tutorial]
[Object
Hierrachy] [Language]
[Expressions]
[Statements]
Getting Started
In order to learn JavaScript, it is necessary to gain familiarity
with the objects (or object hierarchy) the language manipulates,
and also to learn the language.
- Familiarise yourself with the objects, without asking any questions.
Some examples in the Window and Document object are interactive,
so you can see what snippets of code do, and more importantly,
what the object in question is about.
The following link describes the JavaScript
Object Hierarchy.
- Familiarise yourself with programming concepts.
The following link introduces JavaScript programming
language. And refers to JavaScript Expressions
and JavaScript Statements.
- Roll your own code.
[Contents] [Tutorial]
[Object
Hierrachy] [Language]
[Expressions]
[Statements]
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