Firefox Jetpack Evolves to Version 0.2

Mozilla introduced Jetpack, an application programming interface designed to permit developers to apply web development technologies and skills to building Firefox add-ons, in May 2009. Since the initial, 0.1 version release of the API, no less than four updates were introduced, focused mainly on resolving bugs with the initial build, but also on introducing new API features. On June 11, Mozilla labs brought to the table Jetpack 0.2, defined as a major refresh compared to the minor updates delivered since the solution was first launched. The evolution of Jetpack from 0,1 to 0.2 offers developers a new Firefox experimental UI element and fresh APIs.

“Besides numerous bug fixes (including a particularly nasty one that would hide prevent extensions from being in the status bar), there are three main additions: slidebars, jetpack.future, and persistent storage,” revealed Aza Raskin, head of user experience for Mozilla Labs. “Slidebars are a reinvention of the old sidebar feature of browsers. They allow quick access to a wide range of both temporary and permanent information at the side of your browser window.”

Raskin stressed the fact that Jetpack was put together to serve a double purpose. First and foremost, the solution is designed as a platform for experimentation. However, this aspect needs not to lead to the exclusion of developers using Jetpack as a solid and comprehensive set of APIs capable of extending Firefox. In this context, Mozilla Labs now allows Jetpack developers to import features from the future, as long as they are experimental in nature, which is the case of Slidebars, for example.

“One of the most requested features in the Jetpack development mailing list was for the ability to persistently store data across restarts. We’ve added simple storage to the future module,” Raskin added. “Mozilla Labs is a virtual lab where people come together online to create, experiment and play with Web innovations for the public benefit. The Jetpack experiment is still in its infancy and just getting started.”

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