Firefox is no longer supported on Windows 8.1 and below. Please download Firefox ESR (Extended Support Release) to use Firefox.
Learn, build, improve, and create with Firefox DevTools. Firefox Developer Edition CSS GridCSS Grid Layout is completely changing the game for web design. Learn about CSS Grid Layout and the Firefox DevTools layout panel Go to Playground DebuggerStill using console.log for debugging JavaScript? There is a better way! Learn about how to use Firefox Debugger to debug and fix your code. Go to Playgro
Firefox Browser Architecture Mission Change Mozilla. Investigate big technical challenges and produce engineering programs to address them. Our Conclusions This is a list of our findings that we’re reasonably happy with so far. Documenting our output looks at how we’re going to communicate with the rest of Mozilla. Extracting Necko considers whether it’s feasible or worthwhile to extract Necko — G
WebRender, is a 2D renderer for the web. It started as Servo‘s graphics engine, and we are in the process of integrating it in Firefox. I have been meaning for a while to write about what WebRender is, how it works and how its architecture is different from what Firefox and other browsers currently do. To do that, I first wanted to provide some context and look at what Firefox (and other browser e
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Either email addresses are anonymous for this group or you need the view member email addresses permission to view the original message As of Firefox 57 I intend to turn PerformanceObserver on by default. It's been enabled on nightly by default for 16 months. Chrome has already shipped it since 52, WebKit has implemented it since January 2017, but not shipped yet. Edge has not implemented it yet,
JSer.info #347 - FirefoxのHeadlessモードについてのドキュメントが公開されています。 Headless mode - Mozilla | MDN FirefoxのHeadlessモードはLinuxではFirefox 55から、Mac/Windowsは56(現在のNightly)から動作します。 ChromeもMac/LinuxはChrome 59から、WindowsはChrome 60からHeadlessモードを利用できるようになっています。 以前2017-05-03のJS: Headless Chrome/FirefoxとPhantomJS/SlimerJS、ES modules - JSer.infoでまとめた現在のHeadless対応状況を更新しました。 Chromeは現バージョンである60から、Firefoxは次バージョンである56から全てのOSでHe
Since Firefox 57, the --screenshot flag allows you to take screenshots of websites. The basic usage is as follows: /path/to/firefox -P my-profile -headless --screenshot https://developer.mozilla.org/ This creates a full-height screenshot of https://developer.mozilla.com/en-US/ called screenshot.png, in the active directory, with a viewport width of 800px. You can omit -headless when using --screen
JSer.info #344 - Firefox 55.0がリリースされました。 Firefox 55 for developers - Mozilla | MDN Firefox 55: first desktop browser to support WebVR ★ Mozilla Hacks – the Web developer blog ECMAScriptにおいてはES2017のSharedArrayBuffer、現在Stage 3のObject rest/spread propertiesのサポートが行われています。 加えてrequestIdleCallback、WebVR API、Intersection Observer APIがサポートされています。 また、既存の挙動の変更としてスクロール位置の値を浮動小数点数として返すように変更、Selection APIの仕様追従、
A relevant ad will be displayed here soon. These ads help pay for my hosting. Please consider disabling your ad blocker on Pony Foo. These ads help pay for my hosting. In this article, we’ll discuss how Object.prototype.toString() performs in the V8 engine, why it’s important, how it changed with the introduction of ES2015 symbols, and how the baseline performance can be improved by up to 6x (base
SharedArrayBuffer および Atomics オブジェクトをデフォルトで有効化しました。JavaScript の Shared Memory と Atomics の入門として、A Taste of JavaScript's New Parallel Primitives をご覧ください。 object destructuring で rest operator (...) をサポートしました。また、spread operator (...) が オブジェクトリテラル で動作するようになりました (Stage 3 ECMAScript proposal: Object Rest/Spread Properties。 Firefox バグ 1339395)。 非同期ジェネレーターメソッド をサポートしました (Firefox バグ 1353693)。 String.prototy
What do infinite scrolling, lazy loading, and online advertisements all have in common? They need to know about—and react to—the visibility of elements on a page! Unfortunately, knowing whether or not an element is visible has traditionally been difficult on the Web. Most solutions listen for scroll and resize events, then use DOM APIs like getBoundingClientRect() to manually calculate where eleme
Firefox is no longer supported on Windows 8.1 and below. Please download Firefox ESR (Extended Support Release) to use Firefox.
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