Feeds

Mozilla Labs pops out JavaScript language tool for coders

Two heads are better than one. Just ask Beeblebrox

3 Big data security analytics techniques

Mozilla has released a JavaScript engine strictly for testing purposes to allow web developers to gain deeper access to – and better understanding of – the code underpinning its browser.

The Narcissus engine and Zaphod script look-up tool have been added to Mozilla Labs to help the open source outfit develop new ideas for the JavaScript language.

“What features should we add to JavaScript? What should the syntax/semantics be? What practical issues will come up that we have not considered so far? With Narcissus and Zaphod, we can more easily answer these questions,” said Mozilla’s Tom Austin.

“In programming language (PL) research, we like to write up fancy evaluation rules containing lots of Greek letters. Unfortunately, these rules tend to be inscrutable to anyone who isn’t a PL researcher. Even for PL researchers, there is something unsatisfying about seeing a bunch of rules on a piece of paper.”

By releasing the Narcissus Javascript engine, which is based on simpler code and is much less affected by the changing browser code base, Mozilla hopes to get more people testing the software.

Meanwhile, Zaphod doggedly searches for scripts with a tag of “application/narcissus” and parses them with Narcissus. Mozilla’s factory line JavaScript engine SpiderMonkey ignores the tag.

“But we might also want to see how the implementation would work on a pre-existing page. Click on the mozilla icon in the bottom right corner and Narcissus will be set as the default JavaScript interpreter. After experimenting, click on the icon again and SpiderMonkey will be reset as your JS implementation,” said Austin.

“Zaphod/Narcissus cannot yet handle some of the more JavaScript-heavy pages, but it can handle enough to be a valuable research tool for JavaScript language hackers.”

This way for more about the JavaScript experiment. ®

SANS - Survey on application security programs

More from The Register

next story
This time it's 'Personal': new Office 365 sub covers just two devices
Redmond also brings Office into Google's back yard
Oh no, Joe: WinPhone users already griping over 8.1 mega-update
Hang on. Which bit of Developer Preview don't you understand?
Microsoft lobs pre-release Windows Phone 8.1 at devs who dare
App makers can load it before anyone else, but if they do they're stuck with it
Half of Twitter's 'active users' are SILENT STALKERS
Nearly 50% have NEVER tweeted a word
Internet-of-stuff startup dumps NoSQL for ... SQL?
NoSQL taste great at first but lacks proper nutrients, says startup cloud whiz
Ditch the sync, paddle in the Streem: Upstart offers syncless sharing
Upload, delete and carry on sharing afterwards?
New Facebook phone app allows you to stalk your mates
Nearby Friends feature goes live in a few weeks
Microsoft TIER SMEAR changes app prices whether devs ask or not
Some go up, some go down, Redmond goes silent
Batten down the hatches, Ubuntu 14.04 LTS due in TWO DAYS
Admins dab straining server brows in advance of Trusty Tahr's long-term support landing
prev story

Whitepapers

SANS - Survey on application security programs
In this whitepaper learn about the state of application security programs and practices of 488 surveyed respondents, and discover how mature and effective these programs are.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Top three mobile application threats
Learn about three of the top mobile application security threats facing businesses today and recommendations on how to mitigate the risk.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.