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13 July 2009, 11:09

Mozilla releases Jetpack 0.3

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The Mozilla Labs developers have announced the release of version 0.3 of Jetpack, an API for creating extensions for Firefox. The release now includes support for selections and a system-wide clipboard, letting users cut and paste between the Firefox web browser and other applications. Selections include onSelection events that can be used to perform an action, such as looking up the selection or creating an actionable nib, when a selection is made.

The SlideBar API has been updated and includes several improvements and new features. However, the developers also note that the SlideBar API included in the release is incompatible with the previous API and that all SlideBar-based Jetpacks will need to be updated. Based on user feedback, is now synchronous, instead of asynchronous. A new Simple Persistent Storage API has also been added that, unlike DOM Storage which only supports storing strings, uses a single, persistent JavaScript object.

Jetpack builds on HTML, JavaScript and CSS to provide a platform for add-on developers to create Firefox extensions. Previously add-on developers also had to know Mozillas XML-based XUL (XML User Interface Language), in addition to Javascript and CSS. Jetpack 0.3 requires version 3.5 of Firefox and is available download (direct download) for Linux, Mac OS X and Windows.

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