Online JavaScript References
This section includes links to online references for the JavaScript language, document object model, DHTML, and more.
What is Javascript
Answers to a few introductory questions on what Javascript is and how to use it.
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?
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.
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.
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
What is a function and why should we use them in JavaScript
When to use Noscript
Just how useful is the noscript tag and when should you use it?
Just how useful is the noscript tag and when should you use it?
Javascript and JScript
Javascript and JScript, different languages for different browsers.
Javascript and JScript, different languages for different browsers.
Not Quite Javascript
Javascript is only one of a group of languages based on ECMAscript.
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.
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
JavaScript should enhance a web page and make it easier to use
Print Friendly Pages
The relationship between JavaScript and printer friendly web pages.
The relationship between JavaScript and printer friendly web pages.
JavaScript Objects
What are 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.
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.
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.
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?
What 'structures' are used in structured programming?
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
A useful quick reference guide covering the Document Object model and built-in Javascript objects.