The MDN Web Docs Learning Area teaches fundamentals of modern web development, beginning with HTML, CSS, and JavaScript essentials. In feedback this year, readers asked for a more opinionated, structured approach. They asked for coverage of client-side tooling, frameworks, transformation tools, and deployment tools widely used in today's workplace. Meet …
Regular expressions – commonly known as RegExps – are a powerful and heavily used tool for manipulating strings in JavaScript. This post describes how we updated the RegExp engine in SpiderMonkey, Firefox's JavaScript engine, by building a shim layer to V8's Irregexp. The outcome: reduced maintenance and stronger collaboration among …
Firefox 77 is now available with a variety of developer tool updates and new web platform features. With your feedback, we've removed performance bottlenecks, resulting in faster, leaner JavaScript debugging. We also report on some changes to Firefox extensions, including fewer permission requests. The post New in Firefox 77: DevTool …
Firefox Profiler is a powerful web-based performance analysis interface featuring call trees, stack charts, flame graphs, and more. All data filtering, zooming, slicing, and transformation actions are preserved in shareable URLs. FunctionTrace is a low-overhead profiler that runs on unmodified Python applications. Integrated with Firefox, it's a new breed of …
Earlier this week, Audio Worklets landed in the release of Firefox 76. We’re ready to start bridging the gap between web audio and native. Developers can now leverage AudioWorklet to write arbitrary audio processing code. This exciting new functionality raises the bar for emerging web experiences like 3D games, VR, …
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