Articles tagged “JavaScript”
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Using Neutrino to jump-start modern JavaScript development
Neutrino is a tool which brings together the best parts of the modern JavaScript toolchain with the ease of zero upfront configuration. Built to let you hit the ground running, Neutrino combines the power of Webpack with the simplicity of presets to build web and Node.js projects.
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Embedding an HTTP Web Server in Firefox OS
Nearing the end of last year, Mozilla employees were gathered together for a week of collaboration and planning. During that week, a group was formed to envision what the future of Firefox OS might be surrounding a more P2P-focused Web. In particular, we’ve been looking at harnessing technologies to collectively enable offline P2P connections such […]
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DOM Traversal in Firefox 3.5
Firefox 3.5 includes new support for two W3C DOM traversal specifications. The first, the Element Traversal API, focuses on making element-by-element traversal easier, the second, the NodeIterator interface which makes finding all node types much easier. Element Traversal API The purpose of the Element Traversal API is to make it easier for developers to traverse […]
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How MDN’s autocomplete search works
Last month, Gregor Weber and Peter Bengtsson added an autocomplete search to MDN Web Docs, that allows you to quickly jump straight to the document you're looking for by typing parts of the document title. This is the story about how that's implemented.
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Animating like you just don’t care with Element.animate
In Firefox 48 we’re shipping the <a href="https://developer.mozilla.org/docs/Web/API/Element/animate" target="_blank"><b>Element.animate()</b></a> API — a new way to programmatically animate DOM elements using JavaScript. Let’s pause for a second — “big deal”, you might say, or “what’s all the fuss about?” After all, there are already plenty of animation libraries to choose from. In this post I want […]
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Warp: Improved JS performance in Firefox 83
With Warp (also called WarpBuilder) we’re making big changes to our JIT (just-in-time) compilers, resulting in improved responsiveness, faster page loads and better memory usage. The new architecture is also more maintainable and unlocks additional SpiderMonkey improvements. This post explains how Warp works and how it made SpiderMonkey faster.
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Firefox 75: Ambitions for April
Firefox 75 is chock full of handy new dev tooling: instant evaluation in the web console, event breakpoints for WebSockets, and more. New web platform features include HTML lazy loading for images, the CSS min(), max(), and clamp() functions, public static class fields, and additions to Web Animations API support.
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Firefox 69 — a tale of Resize Observer, microtasks, CSS, and DevTools
For our latest excellent adventure, we’ve gone and cooked up a new Firefox release. Version 69 features a number of great new additions including JavaScript public instance fields, the Resize Observer and Microtask APIs, CSS logical overflow properties (e.g. overflow-block) and @supports for selectors.
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Fathom: a framework for understanding web pages
Meet Fathom, a mini-language for writing semantic extractors, that you can use client- or server-side to extract meaning from the content of a web page. Scoop up all those ideas you threw away because they required too much understanding by the browser. We can do that now.
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Improved Process Isolation in Firefox 100
Firefox uses a multi-process model for additional security and stability while browsing: Web Content (such as HTML/CSS and Javascript) is rendered in separate processes that are isolated from the rest of the operating system and managed by a privileged parent process. This way, the amount of control gained by an attacker that exploits a bug in a content process is limited. In this article, we would like to dive a bit further into the latest major milestone we have reached: Win32k Lockdown, which greatly reduces the capabilities of the content process when running on Windows.
