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Firefox Quantum: Developer Edition

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Developer resources

MDN

The best resource for the Open Web.

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Firefox DevTools

Edit and debug HTML, CSS, and JavaScript.

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WebAssembly

Use the .wasm format as a compiler target.

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Cross-browser testing

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Events to check out

Fresh from our blog

Fresh from our blog

  • @media, MathML, and Django 1.11: MDN Changelog for May 2018

    May’s MDN changelog highlights lots of stuff that got shipped to make MDN Web Docs so much better all the time. The team, with help from numerous contributors, migrated CSS @media and MathML compat data, prepared for Django 1.11, started tracking work in ZenHub, continued the HTML Interactive Examples project, and shipped tweaks and fixes by merging 397 pull requests, including 60 pull requests from 43 new contributors.

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  • Overscripted! Digging into JavaScript execution at scale

    We set out to explore the unseen or non-obvious JavaScript execution events that are triggered when a user visits a webpage, and all the first- and third-party events that are set in motion when people retrieve content. To help enable more exploration and analysis, we are releasing our full set of data about JavaScript executions. This post introduces the dataset, how it was collected, and the decisions made along the way. We’ll share examples of insights discovered and provide information for participating in the associated Overscripted Web: A Mozilla Data Analysis Challenge, which we’ve launched today with Mozilla’s Open Innovation Team.

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  • Baby’s First Rust+WebAssembly module: Say hi to JSConf EU!

    A secret project has been brewing for JSConf EU, and this weekend is the big reveal: The Arch is a larger-than-life experience that uses 30,000 colored LEDs to create a canvas for light animations. And you can take charge of this space. Using modules, you can create a light animation. But even though this is JSConf, these animations aren’t just powered by JavaScript modules. In fact, we hope you will try something new… Rust + WebAssembly.

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