Online JavaScript References

Class References (6) Reviews (56)

What is Javascript
Answers to a few introductory questions on what Javascript is and how to use it.

A Brief History of Javascript
What is Javascript, who created it, and who controls the standards?

Javascript 101
Want to use Javascript on your web pages? There are two alternate approaches you can take.

HTML Comments and JavaScript
When JavaScript was first introduced it was necessary to include the script inside of an HTML comment in order to prevent older browsers from displaying the code. As people stopped using those old browsers many years ago it is no longer necessary to do this and in fact doing so can have other unwanted effects.

The Purpose of Functions
What is a function and why should we use them in JavaScript

Reasons to Avoid Noscript
The noscript tag is long past its use by date.

Javascript and JScript
Javascript and JScript, different languages for different browsers.

An IE7 bug?
IE7 incorrectly maps function calls to the wrong code for buttons.

Not Quite Javascript
Javascript is only one of a group of languages based on ECMAscript.

The Three Parts of JavaScript
Javascript and JScript each have the same three parts in their specifications.

Accessibility
JavaScript should enhance a web page and make it easier to use

Print Friendly Pages
The relationship between JavaScript and printer friendly web pages.

When to use Noscript
Just how useful is the noscript tag and when should you use it?

JavaScript and Emails
Why not to use JavaScript with emails

JavaScript Objects
What are JavaScript Objects?

JavaScript and Unicode
The ASCII character set is limited to 128 different characters and 32 of those are reserved for control characters. Unicode solves this shortage by using one, two, or even four bytes to allow for over sixteen million different characters and symbols. JavaScript can't use all of the Unicode characters but it can work with the 65000 most common ones.

Javascript Glossary
A glossary of JavaScript related terms.

Reserved Words
Certain words have special meanings in Javascript and so you can't use them as variable names. Here is a list of them.

Structured Programming
What 'structures' are used in structured programming?

Julian DayJulian Day
What is a Julian Day?

JavaScript and HTML Tidy
Running HTML Tidy is a good way to tidy up your HTML and correct a lot of the minor errors it may contain. You need to be careful though if your page also contains JavaScript as the tidy program may reformat your JavaScript as well breaking the code.

Javascript Quiz
How well do you know Javascript? The 10 questions in this script will test your knowledge. The script also demonstrates the functioning of quizes made with Quiz Maker 1.

Javascript Quiz - Random Questions
This short quiz selects 5 questions at random from the 10 questions used in the Javascript quiz. It demonstrates the functioning of the random quiz addon.

HTML
While not absolutely essential if you use a web editor that creates the HTML for you, a thorough knowledge of HTML can help you when writing your own Javascript programs.

Cascading Style Sheets
To make your pages dynamic you will need a thorough understanding of how to code stylesheets and how they affect the appearance of the elements on your page.

PERL and PHP
Not everything can be done on your visitor's computer. When you need your programs to run on the web server you need a server side language such as PERL or PHP.

Universal Co-ordinated Time (UTC)
Universal co-ordinated time is the new name for Greenwich mean time.

Java
Java is a NOT Javascript but it is another programming language that can be used to enhance your web site. It can be run either on your visitor's computers or on the web server.

Javascript Support in Acrobat
Since version 5, Adobe Acrobat has supported Javascript.

W3 Schools Javascript Reference
A useful quick reference guide covering the Document Object model and built-in Javascript objects.

statusbar
JavaScript Glossary definition for: statusbar

scrollbars
JavaScript Glossary definition for: scrollbars

personalbar
JavaScript Glossary definition for: personalbar

menubar
JavaScript Glossary definition for: menubar

locationbar
JavaScript Glossary definition for: locationbar

toolbar
JavaScript Glossary definition for: toolbar

ScrollY
JavaScript Glossary definition for: ScrollY

ScrollX
JavaScript Glossary definition for: ScrollX

screenY
JavaScript Glossary definition for: screenY

screenX
JavaScript Glossary definition for: screenX

Javascript Glossary - Hidden
JavaScript Glossary definition for: Hidden

Javascript Glossary - Radio
JavaScript Glossary definition for: Radio

Javascript Glossary - Textarea
JavaScript Glossary definition for: Textarea

Javascript Glossary - Select
JavaScript Glossary definition for: Select

Javascript Glossary - Checkbox
JavaScript Glossary definition for: Checkbox

Javascript Glossary - Password
JavaScript Glossary definition for: Password

Javascript Glossary - Text
JavaScript Glossary definition for: Text

Javascript Glossary - FileUpload
JavaScript Glossary definition for: FileUpload

Javascript Glossary - Button
JavaScript Glossary definition for: Button

Javascript Glossary - propertyIsEnumerable
JavaScript Glossary definition for: propertyIsEnumerable

Javascript Glossary - Constructor
JavaScript Glossary definition for: Constructor

Javascript Glossary - Prototype
JavaScript Glossary definition for: Prototype

Javascript Glossary - valueOf
JavaScript Glossary definition for: valueOf

Javascript Glossary - hasOwnProperty
JavaScript Glossary definition for: hasOwnProperty

Javascript Glossary - isPrototypeOf
JavaScript Glossary definition for: isPrototypeOf

Javascript Glossary - toString
JavaScript Glossary definition for: toString

Javascript Glossary - RangeError
JavaScript Glossary definition for: RangeError

Javascript Glossary - ReferenceError
JavaScript Glossary definition for: ReferenceError

Javascript Glossary - Error
JavaScript Glossary definition for: Error

Javascript Glossary - SyntaxError
JavaScript Glossary definition for: SyntaxError

Javascript Glossary - URIError
JavaScript Glossary definition for: URIError

Javascript Glossary - EvalError
JavaScript Glossary definition for: EvalError

Javascript Glossary - TypeError
JavaScript Glossary definition for: TypeError

Javascript Glossary - Plugins
JavaScript Glossary definition for: Plugins

Javascript Glossary - applets
JavaScript Glossary definition for: applets

Javascript Glossary - screen
JavaScript Glossary definition for: screen

Javascript Glossary - RegExp
JavaScript Glossary definition for: RegExp

Javascript Glossary - Number
JavaScript Glossary definition for: Number

Javascript Glossary - parent
JavaScript Glossary definition for: parent

Javascript Glossary - location
JavaScript Glossary definition for: location

Javascript Glossary - navigator
JavaScript Glossary definition for: navigator

Javascript Glossary - Onkeydown
JavaScript Glossary definition for: Onkeydown

Javascript Glossary - Onkeyup
JavaScript Glossary definition for: Onkeyup

Javascript Glossary - Onkeypress
JavaScript Glossary definition for: Onkeypress

Javascript Glossary - User Script
JavaScript Glossary definition for: User Script

Javascript Glossary - Image
JavaScript Glossary definition for: Image

Javascript Glossary - Images
JavaScript Glossary definition for: Images

Javascript Glossary - onmouseout
JavaScript Glossary definition for: onmouseout

Javascript Glossary - onmouseover
JavaScript Glossary definition for: onmouseover

Javascript Glossary - Onclick
JavaScript Glossary definition for: Onclick

Javascript Glossary - forward
JavaScript Glossary definition for: forward

Javascript Glossary - back
JavaScript Glossary definition for: back

Javascript Glossary - onmousedown
JavaScript Glossary definition for: onmousedown

Javascript Glossary - onmouseup
JavaScript Glossary definition for: onmouseup

Javascript Glossary - isNaN
JavaScript Glossary definition for: isNaN

Javascript Glossary - isfinite
JavaScript Glossary definition for: isfinite

Javascript Glossary - Frames
JavaScript Glossary definition for: Frames

Javascript Glossary - Forms
JavaScript Glossary definition for: Forms

Javascript Glossary - Return
JavaScript Glossary definition for: Return

Javascript Glossary - Final
JavaScript Glossary definition for: Final

Javascript Glossary - mimeTypes
JavaScript Glossary definition for: mimeTypes

Javascript Glossary - Links
JavaScript Glossary definition for: Links

Javascript Glossary - Link
JavaScript Glossary definition for: Link

Javascript Glossary - Anchors
JavaScript Glossary definition for: Anchors

Javascript Glossary - Anchor
JavaScript Glossary definition for: Anchor

Javascript Glossary - Null
JavaScript Glossary definition for: Null

Javascript Glossary - Void
JavaScript Glossary definition for: Void

Javascript Glossary - In
JavaScript Glossary definition for: For

Javascript Glossary - Int
JavaScript Glossary definition for: Int

Javascript Glossary - Long
JavaScript Glossary definition for: Long

Javascript Glossary - Short
JavaScript Glossary definition for: Short

Javascript Glossary - Float
JavaScript Glossary definition for: Float

Javascript Glossary - Double
JavaScript Glossary definition for: Double

Javascript Glossary - Char
JavaScript Glossary definition for: Char

Javascript Glossary - Byte
JavaScript Glossary definition for: Byte

Javascript Glossary - Boolean
JavaScript Glossary definition for: Boolean

Javascript Glossary - Var
JavaScript Glossary definition for: var

Javascript Glossary - Typeof
JavaScript Glossary definition for: Typeof

Javascript Glossary - Instanceof
JavaScript Glossary definition for: Instanceof

Javascript Glossary - For
JavaScript Glossary definition for: For

Javascript Glossary - Continue
JavaScript Glossary definition for: Continue

Javascript Glossary - Delete
JavaScript Glossary definition for: Delete

Javascript Glossary - New
JavaScript Glossary definition for: New

Javascript Glossary - This
JavaScript Glossary definition for: This

Javascript Glossary - With
JavaScript Glossary definition for: With

Javascript Glossary - Catch
JavaScript Glossary definition for: Catch

Javascript Glossary - Finally
JavaScript Glossary definition for: Finally

Javascript Glossary - Throw
JavaScript Glossary definition for: Throw

Javascript Glossary - Try
JavaScript Glossary definition for: Try

Javascript Glossary - False
JavaScript Glossary definition for: False

Javascript Glossary - True
JavaScript Glossary definition for: True

Javascript Glossary - If
JavaScript Glossary definition for: If

Javascript Glossary - Else
JavaScript Glossary definition for: Else

Javascript Glossary - While
JavaScript Glossary definition for: While

Javascript Glossary - Do
JavaScript Glossary definition for: Do

Javascript Glossary - Break
JavaScript Glossary definition for: Break

Javascript Glossary - Default
JavaScript Glossary definition for: Default

Javascript Glossary - Case
JavaScript Glossary definition for: Case

Javascript Glossary - Switch
JavaScript Glossary definition for: Switch

Javascript Glossary - Flash
JavaScript Glossary definition for: Flash

Javascript Glossary - ActiveX
JavaScript Glossary definition for: ActiveX

Asynchronous
JavaScript Glossary definition for: Asynchronous

Javascript Glossary - AJAX
JavaScript Glossary definition for: AJAX

Javascript Glossary - Reset
JavaScript Glossary definition for: Reset

Javascript Glossary - Pageyoffset
JavaScript Glossary definition for: Pageyoffset

Javascript Glossary - Submit
JavaScript Glossary definition for: Submit

Javascript Glossary - Frame
JavaScript Glossary definition for: Frame

Javascript Glossary - Form
JavaScript Glossary definition for: Form

Javascript for the World Wide Web
Review of Javascript for the World Wide Web by Tom Negrino and Dori Smith

Javascript Glossary - Pagexoffset
JavaScript Glossary definition for: Pagexoffset

Javascript Glossary - Outerwidth
JavaScript Glossary definition for: Outerwidth

Javascript Glossary - Outerheight
JavaScript Glossary definition for: Outerheight

Javascript Glossary - Onerror
JavaScript Glossary definition for: Onerror

Javascript Glossary - Innerwidth
JavaScript Glossary definition for: Innerwidth

Javascript Glossary - Innerheight
JavaScript Glossary definition for: Innerheight

Javascript Glossary - Prompt
JavaScript Glossary definition for: Prompt

Javascript Glossary - Blur
JavaScript Glossary definition for: Blur

Javascript Glossary - Arguments
JavaScript Glossary definition for: Arguments

Javascript Glossary - Unescape
JavaScript Glossary definition for: Unescape

Javascript Glossary - Escape
JavaScript Glossary definition for: Escape

Javascript Glossary - Parsefloat
JavaScript Glossary definition for: ParseFloat

Javascript Glossary - Obfuscation
JavaScript Glossary definition for: Obfuscation

Javascript Glossary - String
JavaScript Glossary definition for: String

Javascript Glossary - Math
JavaScript Glossary definition for: Math

Javascript Glossary - Scrollto
JavaScript Glossary definition for: Scrollto

Javascript Glossary - Resizeto
JavaScript Glossary definition for: Resizeto

Javascript Glossary - Resizeby
JavaScript Glossary definition for: Resizeby

Javascript Glossary - Window
JavaScript Glossary definition for: Window

Javascript Glossary - Parseint
JavaScript Glossary definition for: Parseint

Javascript Glossary - Opener
JavaScript Glossary definition for: Opener

Javascript Glossary - Onfocus
JavaScript Glossary definition for: Onfocus

Javascript Glossary - Onblur
JavaScript Glossary definition for: Onblur

Javascript Glossary - Moveto
JavaScript Glossary definition for: Moveto

Javascript Glossary - Closed
JavaScript Glossary definition for: Closed

Javascript Glossary - Open
JavaScript Glossary definition for: Open

Javascript Glossary - Print
JavaScript Glossary definition for: Print

Javascript Glossary - Infinity
JavaScript Glossary definition for: Infinity

Javascript Glossary - NaN
JavaScript Glossary definition for: NaN

Javascript Glossary - undefined
JavaScript Glossary definition for: undefined

Javascript Glossary - Moveby
JavaScript Glossary definition for: Moveby

Javascript Glossary - Length
JavaScript Glossary definition for: Length

Javascript Glossary - Function
JavaScript Glossary definition for: Function

Javascript Glossary - Focus
JavaScript Glossary definition for: Focus

Javascript Glossary - Eval
JavaScript Glossary definition for: Eval

Javascript Glossary - Document
JavaScript Glossary definition for: Document

Javascript Glossary - Date
JavaScript Glossary definition for: Date

Javascript Glossary - Confirm
JavaScript Glossary definition for: Confirm

Javascript Glossary - Array
JavaScript Glossary definition for: Array

Javascript Glossary - Server
JavaScript Glossary definition for: Server

Javascript Glossary - Class
JavaScript Glossary definition for: Class

Javascript Glossary - Object
JavaScript Glossary definition for: Object

Javascript Glossary - Method
JavaScript Glossary definition for: Method

Javascript Glossary - Event
JavaScript Glossary definition for: Event

Javascript Glossary - Subroutine
JavaScript Glossary definition for: Subroutine

Javascript Glossary - Javascript
JavaScript Glossary definition for: ECMAscript

Javascript Glossary - Instance
JavaScript Glossary definition for: Instance

Javascript Glossary - Property
JavaScript Glossary definition for: Property

Javascript Glossary - Document Object Model
JavaScript Glossary definition for: Document Object Model

Javascript Glossary - W3C
JavaScript Glossary definition for: W3C

Javascript Glossary - Constructor
JavaScript Glossary definition for: Constructor

Javascript Glossary - Procedural Programming
JavaScript Glossary definition for: procedural programming

Javascript Glossary - Object Oriented Programming
JavaScript Glossary definition for: Object Oriented Programming

Javascript Glossary - HTML
JavaScript Glossary definition for: HTML

Javascript Glossary - Cascading StyleSheets
JavaScript Glossary definition for: Cascading StyleSheets

Javascript Glossary - Java
JavaScript Glossary definition for: Java

Javascript Glossary - Operator
JavaScript Glossary definition for: Operator

Javascript Glossary - Variable
JavaScript Glossary definition for: Variable

Javascript Glossary - DHTML
JavaScript Glossary definition for: DHTML

Javascript Glossary - Alert
JavaScript Glossary definition for: Alert

Javascript Glossary - Parse
JavaScript Glossary definition for: Parse

Javascript Glossary - Watch
JavaScript Glossary definition for: Watch

Javascript Glossary - Close
JavaScript Glossary definition for: Close

Javascript Glossary - Onload
JavaScript Glossary definition for: Onload

Javascript Glossary - Onunload
JavaScript Glossary definition for: Onunload

Javascript Glossary - ClearInterval
JavaScript Glossary definition for: ClearInterval

Javascript Glossary - SetInterval
JavaScript Glossary definition for: SetInterval

Javascript Glossary - ClearTimeout
JavaScript Glossary definition for: ClearTimeout

Javascript Glossary - SetTimeout
JavaScript Glossary definition for: SetTimeout