Firefox Articles
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Ambient Light Events and JavaScript detection
I think that one of the most interesting things with all WebAPIs we’re working on, is to interact directly with the hardware through JavaScript, but also, as an extension to that, with the environment around us. Enter Ambient Light Events. The idea with an API for ambient light is to be able to detect the […]
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Firefox Developer Tools work week wrap-up
Last week in Sunnyvale we had the first Developer Tools work week to include the recently-integrated Jetpack team ( for a slightly different take on the week, see Paul’s post. ). And what a week! I was a bit shocked by how many things I thought were just interesting ideas suddenly became real things that […]
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Font Inspector and <time> and <data> elements – Firefox Development Highlights
Time for another look at the latest developments with Firefox. This is part of our Bleeding Edge and Firefox Development Highlights series, and most examples only work in Firefox Nightly (and could be subject to change). Font Inspector A Font Inspector is now available in the Firefox DevTools. In the Firefox Inspector, a “Fonts” panel […]
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WebRTC enabled, H.264/MP3 support in Win 7 on by default, Metro UI for Windows 8 + more – Firefox Development Highlights
Time again for looking at the latest progress with Firefox. These posts are part of our Bleeding Edge and Firefox Development Highlights series – take note that most examples only work in Firefox Nightly (and could be subject to change). WebRTC enabled by default Previously, you needed to go to about:config in Firefox and set […]
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Firefox Development Highlights – H.264 & MP3 support on Windows, scoped stylesheets + more
Time for the first look this year into the latest developments with Firefox. This is part of our Bleeding Edge and Firefox Development Highlights series, and most examples only work in Firefox Nightly (and could be subject to change). H.264 & MP3 support on Windows Firefox for Android and Firefox OS already support H.264 and […]
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Firefox Development Highlights – Per Window Private Browsing & Canvas' globalCompositeOperation new values
On a regular basis, we like to highlight the latest features in Firefox for developers, as part of our Bleeding Edge series, and most examples only work in Firefox Nightly (and could be subject to change). Per Window Private Browsing Private browsing is very useful for web developers. A new private session doesn’t include existing […]
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Firefox Development Highlights: video.playbackRate and download attribute
Here are the latest features in Firefox for developers, as part of our Bleeding Edge series, and most examples only work in Firefox Nightly (and could be subject to change). <video>: support for custom playbackRate Setting video.playbackRate changes the “video speed”. 1.0 is regular speed, 2.0 is 2 times faster. From the MDN documentation on […]
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H.264 video in Firefox for Android
Firefox for Android has expanded its HTML5 video capabilities to include H.264 video playback. Web developers have been using Adobe Flash to play H.264 video on Firefox for Android, but Adobe no longer supports Flash for Android. Mozilla needed a new solution, so Firefox now uses Android’s “Stagefright” library to access hardware video decoders. The […]
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Progress on OMTC, unprefixed Visibility API and CSS improvements – Firefox Development Highlights
To keep all you web developers in the loop about new features and improvements in Firefox, and to be able to test and experiment in an early stage, here’s the latest Firefox Development Highlights. This is part of our Bleeding Edge series, and most examples only work in Firefox Nightly (and could be subject to […]
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Progress update on WebRTC for Firefox on desktop
WebRTC for desktop is now in Firefox Nightly and is also in Firefox Aurora, though Nightly has the hottest up-to-date fixes. We support mozGetUserMedia, mozRTCPeerConnection and DataChannels. We have a basic UI for mozGetUserMedia which we expect to be updating in the coming weeks. Enabling WebRTC in Firefox The code is behind a pref for […]