| 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, Mozilla,
Firefox, Netscape, Opera.
What You Should Already Know
Before you continue you should have
a basic understanding of the following:
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)
- A JavaScript consists of lines
of executable computer code
- A 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("<h1>"
+ name + "</h1>") 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 will
save 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
JavaScript Basics
[JavaScript
Tutorial] [JavaScript
Introduction] [JavaScript
How To] [JavaScript
Where To] [JavaScript
Variables] [JavaScript
If...Else] [JavaScript
Switch] [JavaScript
Operators] [JavaScript
Popup Boxes] [JavaScript
Functions] [JavaScript
For Loop] [JavaScript
While Loop] [JavaScript
Break Loops] [JavaScript
For...In] [JavaScript
Events] [JavaScript
Try...Catch] [JavaScript
Throw] [JavaScript
onerror] [JavaScript
Special Text] [JavaScript
Guidelines]
JavaScript Objects
[JavaScript
Objects Introduction] [JavaScript
String] [JavaScript
Date] [JavaScript
Array] [JavaScript
Boolean] [JavaScript
Math] [JavaScript
HTML DOM]
JavaScript Advance
[JavaScript
Browser] [JavaScript
Cookies] [JavaScript
Validation] [JavaScript
Animation] [JavaScript
Image Maps] [JavaScript
Timing] [JavaScript
Create Object] [JavaScript
Summary]
JavaScript References
[JavaScript
Objects]
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