Tutorials Page 3

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    Get Up and Win

    Down on my hands and knees, I crawl around, bleeding out.  I'm resigned to my fate.  A kind stranger, a new friend, rushes over to me and kneels to help, reviving me at a time that didn't require it.  Just as I'm revived, the kind stranger...

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    Lessons in Failure: Removing the Old Debugger from Firefox

    Joining the Firefox DevTools team was a dream come true for me.  I shared why in the first episode of the Script & Style show but the quick summary is that I grew up loving Firefox (even before it was called "Firefox") because Mozilla cared...

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    Mercurial: Mass Add and Remove All Files

    While I much prefer git and the GitHub workflow, Firefox's codebase (mozilla-central) is store in a mercurial repository.  There are tools that wrap mercurial so you can use a git-like interface, like git-cinnabar, but my philosophy is to learn the root tool so that I...

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    Change Mac Brightness from Command Line

    Earlier this week I posted about how you can modify your Mac's volume from command line.  Little command line scripts make me smile because I spend so much of my day in command line, and automation can be the key to productivity.  I next thought about...

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    Find and Change Default App for File Type from Command Line

    There are few things more frustrating to any computer user than files opening in an unwanted application.  Sure you can use the Open menu item in the desired application but we all just want to double-click a file and see it open in the application we expect. ...

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    Real-time Geolocation & Reverse IP Lookup with ipapi

    There's an incredible amount you can do when you know where your web visitor is located.  You can target advertising to the user, you can load maps of nearby search queries, you can localize website verbiage, you can customize content for their region, etc.  I...

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    Change System Volume from Command Line on Mac OS

    Oftentimes the awesome GUI applications we love are simply gloss over a command line functionality.  While I do love a visual app, it's always good to know how to do things from command line, if only for the sake of automation.  I've covered loads of

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    Script & Style Show: Episode 25: AR, VR, and Mozilla Reality with Chris Van Wiemeersch

    On this episode:  Todd notices what David's been watching on YouTube while logged in as the Script & Style user and David has no defense but loads of embarrassment.  David hurriedly transitions to welcoming guest Chris Van Wiemeersh from Mozilla's Reality team.  Chris enlightens the guys...

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    How to Get and Set CSS Variable Values with JavaScript

    CSS variables are a very welcome addition to the language, despite them being incredibly basic.  Sure we could use SASS or stylus but languages should never count on developers relying on frameworks and toolkits to accomplish what we know we need.  And just like every other...

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    Script & Style Show: Episode 24: Meme Sites, Developing for Fun, and Podcasts with Lemon!

    On this episode: Todd asks David what he wants to be for Halloween and quickly regrets it, while Todd reveals his somewhat controversial costume.  David and Todd then welcome Lemon, an amazing web developer that creates silly but hilarious web games, hosts The FPl.us...