BT

Firefox 3 RC1 Adds Javascript 1.8, Microformat Support and More

by Nick Laiacona on May 22, 2008 |

The Mozilla project has released Firefox 3 Release Candidate 1 (RC1). New features in Firefox 3 include support for Javascript 1.8, DOM and HTML changes, microformats support, and an extended Canvass implementation.

Mozilla Corporation continues its march toward Javascript 2.0 with the implementation of features from the Javascript 1.8 specification. New feature include: expression closures, generator expressions, and native JSON encoding and decoding. Expression closures are a shorthand method of defining simple functions that mimics lambda notation. Generator expressions make it possible to create generators without defining a custom function. JSON encoding and decoding formalizes into the language itself a now ubiquitous feature in Javascript libraries such as Prototype and jQuery.

The major changes to HTML and the DOM in Firefox 3 are related to security improvements and standards compliance. The Firefox team fixed a security hole that allowed frames and iframes to inherit the parent document's character set. They also addressed vulnerabilities in chrome access by remote hosts and file uploading. New features from the HTML 5 specification are also present in Firefox 3 such as improved drag-and-drop support and new DOM attributes related to focus management.

Firefox 3 has a new global Microformats object accessible to Javascript developers. This API handles the discovery and parsing of some common microformats: adr for address information, geo for spatial coordinates, hCard for contact information, hCalender for calender appointments, and tag which according to the documentation "is used to add tags to other microformats."

Firefox 3 extends the canvass element beyond the official WHATWG specification. Namely, it now provides facilities for drawing text on a canvass surface. Firefox 3 also now supports transformation functions for the canvass objects.

There are additional features in Firefox 3 RC1, include animated PNG (APNG) support. Further details are available at the Mozilla Developer Center. Firefox 3 RC1 can be downloaded from the project website.

Hello stranger!

You need to Register an InfoQ account or to post comments. But there's so much more behind being registered.

Get the most out of the InfoQ experience.

Tell us what you think

Allowed html: a,b,br,blockquote,i,li,pre,u,ul,p

Email me replies to any of my messages in this thread
Community comments

Allowed html: a,b,br,blockquote,i,li,pre,u,ul,p

Email me replies to any of my messages in this thread

Allowed html: a,b,br,blockquote,i,li,pre,u,ul,p

Email me replies to any of my messages in this thread

Discuss

Educational Content

General Feedback
Bugs
Advertising
Editorial
InfoQ.com and all content copyright © 2006-2013 C4Media Inc. InfoQ.com hosted at Contegix, the best ISP we've ever worked with.
Privacy policy
BT