Just after the official release of Firefox 8 now Mozilla has announced the availability of the beta channel version of Firefox 9 for both desktop and android. The beta channel release for desktop brings new features and enhancements for the end user and adds new developer features. Most notable is the Type Inference (TI) engine in Firefox's TraceMonkey JavaScript engine. This allows the engine to generate type information about scripts it is running, analysing the code and then reviewing the dynamic types as the scripts executes. The type information is then used during JIT compilation to generate more efficient code. As JavaScript is a dynamically typed language, the JIT compiler, not knowing the type of data, has had to generate slower code to allow for all possibilities. Type inference can determine, for example if only integers are needed in a loop and then generate machine code which uses only integers; this results 20 to 30 per cent faster JavaScript performance.
Camera support has also been enabled so that HTML5 developers can use it as an input device. The HTML5 Form Validation API automatically validates form fields with numbers, email addresses and URLs without developers needing to write their own code.
Other new features include Mac OS X Lion support which sees visual improvements as Firefox matches the the Mac OS X application toolbar and style; it supports two-finger swipe navigation gestures and is said to be easier to use on multiple monitors. Support for detecting Do Not Track in JavaScript has been added to allow web sites which cannot read the Do Not Track header to detect that the user wants to opt out of behavioural tracking.
Camera support has also been enabled so that HTML5 developers can use it as an input device. The HTML5 Form Validation API automatically validates form fields with numbers, email addresses and URLs without developers needing to write their own code.
Other new features include Mac OS X Lion support which sees visual improvements as Firefox matches the the Mac OS X application toolbar and style; it supports two-finger swipe navigation gestures and is said to be easier to use on multiple monitors. Support for detecting Do Not Track in JavaScript has been added to allow web sites which cannot read the Do Not Track header to detect that the user wants to opt out of behavioural tracking.
To download Firefox 9 Beta Click Here
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