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JavaScript Style Sheets (JSSS) was a stylesheet language technology

proposed by Netscape Communications in 1996 to provide facilities for

defining the presentation of webpages.cite-ref-chapter20-1-0[1] It was an alternative to the

Cascading Style Sheets (CSS) technology.cite-ref-chapter20-1-1[1]

Although Netscape submitted it to the World Wide Web Consortium (W3C),

the technology was never accepted as a formal standard and it never

gained acceptance in the web browser market. Only Netscape Communicator

4 implemented JSSS, with rival Internet Explorer choosing not to

implement the technology. Soon after Netscape Communicator's release in

1997, Netscape stopped promoting JSSS, instead focusing on the rival CSS

standard, which was also supported by Internet Explorer and had a much

wider industry acceptance.

The follow-up to Netscape Communicator, Netscape 6 (released in 2000),

dropped support for JSSS. It now remains little more than a historical

footnote, with web developers generally unaware of its previous

existence. The proposal did not become a W3C standard.

• Syntax

• Example

• Browser support

• References

• External links

Using JavaScript code as a stylesheet, JSSS styles individual element by

modifying properties of a document.tags object. For example, the CSS:

is equivalent to the JSSS:

JSSS element names are case sensitive.

JSSS lacks the various CSS selector features, supporting only simple tag

name, class and id selectors. On the other hand, since it is written

using a complete programming language, stylesheets can include highly

complex dynamic calculations and conditional processing. (In practice,

however, this can be achieved using JavaScript to modify the stylesheets

applicable to the document at runtime.) Because of this JSSS was often

used in the creation of dynamic web pages.

The following example shows part of the source code of an HTML document:

Similar to Cascading Style Sheets, JSSS could be used in a <style> tag.

This example shows two different methods to select tags.

Javascript Style Sheets were only supported by Netscape 4.x (4.0–4.8)

but no later versions. No other web browser has ever implemented JSSS.

cite-note-chapter20-11. ↑ citerefh-kon-wium-liebert-bosHåkon Wium Lie; Bert Bos. "Chapter 20 - The CSS saga". World Wide Web Consortium. Retrieved 23 June 2010.

• Netscape's JavaScript-Based Style Sheets submission to the W3C

• The dynamic, powerful abilities of JavaScript Style Sheets

• JavaScript Style Sheet Reference