Accessibility Features in Firefox
assistive technology support on windows "i am a full firefox convert with the release of 1.5.
... at my next opportunity, i intend to convert my family over to it too." darren paskell, from window-eyes beta testing list firefox works with popular screen readers, with the best support currently coming from gw micro's window-eyes 5.5.
...in recent articles from both afb's access world and nfb's voice of the nation's blind, reviewers found no significant roadblocks in moving to firefox from internet explorer for screen reader users.
...And 18 more matches

about:debugging - Firefox Developer Tools
the about:debugging page provides a single place from which you can attach the firefox developer tools to a number of debugging targets.
... opening the about:debugging page there are two ways to open about:debugging: type about:debugging in the firefox url bar.
... this firefox provides information about temporary extensions you have loaded for debugging, extensions that are installed in firefox, the tabs that you currently have open, and service workers running on firefox.
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Creating a Firefox sidebar extension - Archive of obsolete content
a newer document is available: creating a firefox sidebar this article describes how to create a registered sidebar for firefox 2 or greater.
... introduction this article is a quick start for the creation of a new sidebar for firefox.
...it's preferable you have some basic knowledge of how xul works and how firefox handles extensions.
...And 17 more matches

Creating custom Firefox extensions with the Mozilla build system - Archive of obsolete content
there is a wealth of material on creating extensions for firefox.
...in addition, binary components need to be recompiled for every major firefox release, which can be frustrating.
... this article describes how to set up the development environment for a large, complex firefox extension with any or all of the above-mentioned requirements.
...And 16 more matches

Experimental features in Firefox
in order to test new features, mozilla publishes a test version of the firefox browser, firefox nightly, every day.
... these nightly builds of firefox typically include experimental or partially-implemented features, including those for proposed or cutting-edge web platform standards.
... this page lists features that are in nightly versions of firefox along with information on how to activate them, if necessary.
...And 12 more matches

Firefox
firefox is mozilla's popular web browser, available for multiple platforms including windows, macos, and linux on the desktop and all android and ios mobile devices.
... with broad compatibility, the latest in web technologies, and powerful development tools, firefox is a great choice for both web developers and end users.
... firefox is an open source project; much of the code is contributed by our huge community of volunteers.
...And 11 more matches

Settings - Firefox Developer Tools
opening settings beginning with firefox 62, the icon to open developer tools settings has been moved into a menu accessed by clicking/touching ...
...to see the settings, open any of the developer tools, and then: click the "settings" command in the menu: or press f1 to toggle between the active tool and the settings pane the settings pane looks something like this: categories default firefox developer tools this group of checkboxes determines which tools are enabled in the toolbox.
... new tools are often included in firefox but not enabled by default.
...And 11 more matches

Chapter 6: Firefox extensions and XUL applications - Archive of obsolete content
« previous this document was authored by taro (btm) matsuzawa and was originally published in japanese for the firefox developers conference summer 2007.
... matsuzawa-san is a co-author of firefox 3 hacks (o'reilly japan, 2008.) this chapter discusses tools to assist in developing extensions.
... venkman, the javascript debugger venkman is a full-fledged javascript debugger that runs inside firefox.
...And 10 more matches

Plugin Roadmap for Firefox - Plugins
plugins are a security and performance problem for firefox users.
...to support the transition away from flash, firefox is working with other browsers to progressively and carefully make flash usage less common.
... below is the roadmap of past and future support for plugins in firefox.
...And 9 more matches

Deprecated tools - Firefox Developer Tools
scratchpad scratchpad is deprecated as of firefox 70 (bug 1565380), and will be removed as of firefox 72 (bug 1519103).
... alternatives in firefox 71+, you can write multi-line javascript code in the web console editor mode, making it similar to the scratchpad.
... starting firefox 72, you can import a javascript file content in the console input with ctrl + o (cmd + o on macos), as well as saving the console input content to a file using ctrl + s (cmd + s on macos).
...And 9 more matches

Developing for Firefox Mobile - Archive of obsolete content
see developing webextensions for firefox for android to learn more about development of webextensions for firefox for android.
... firefox for android implements its ui using native android widgets instead of xul.
... with the add-on sdk you can develop add-ons that run on this new version of firefox mobile as well as on the desktop version of firefox.
...And 8 more matches

Getting Started with Firefox Extensions - Archive of obsolete content
« previousnext » what's a firefox extension?
... extensions add new functionality to mozilla applications such as firefox and thunderbird.
...this tutorial focuses on extensions for firefox, but the same (or very similar) principles apply to creating extensions for other applications such as thunderbird, seamonkey, and flock.
...And 8 more matches

Network request list - Firefox Developer Tools
starting in firefox 76 you can double-click a column divider to resize the column to the left of it to fit its contents.
... (starting in firefox 80) on the right edge of the file column, a turtle icon appears if the server waiting time exceeds a threshhold (default: 500 ms).
...this is new in firefox 55.
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Firefox Developer Tools
firefox developer tools is a set of web developer tools built into firefox.
... this section contains detailed guides to all of the tools as well as information on how to debug firefox for android, how to extend devtools, and how to debug the browser as a whole.
... the core tools you can open the firefox developer tools from the menu by selecting tools > web developer > toggle tools or use the keyboard shortcut ctrl + shift + i or f12 on windows and linux, or cmd + opt + i on macos.
...And 8 more matches

Java in Firefox Extensions - Archive of obsolete content
if you are in need of calling java code from within a firefox extension, you can make use of liveconnect.
... liveconnect gives your extension's javascript code (linked from or contained in xul code) access to 2 objects: java and packages (note that per this thread, although the new documentation for the liveconnect reimplementation states that these globals will be deprecated (in the context of applets), "firefox and the java plug-in will continue to support the global java/packages keywords, in particular in the context of firefox extensions.").
...if you wish to call java code from within javascript code that implements some xpcom components, at this time, you need a different technique (refer to the complete java firefox extension).
...And 7 more matches

All keyboard shortcuts - Firefox Developer Tools
this page lists all keyboard shortcuts used by the developer tools built into firefox.
...before firefox 55, the keyboard shortcut was ctrl + shift + q (cmd + opt + q on a mac).
...starting in firefox 71.
...And 7 more matches

Remotely debugging Firefox for Metro - Archive of obsolete content
this article explains how to use remote debugging to inspect and code running in the new windows 8 ("metro-style") firefox app, using the developer tools in firefox on the desktop.
... prerequisites you will need: windows 8 (metro-style) firefox running in the touch-friendly "metro" mode on a windows 8 computer.
... firefox running in classic "desktop" mode on windows, mac os x, or linux, either on a separate computer or in a separate profile on the same computer.
...And 6 more matches

Migrating from Firebug - Firefox Developer Tools
when migrating from firebug to the firefox developer tools, you may wonder where the features you loved in firebug are available in the developer tools.
... for the latest developer tools and features, try firefox developer edition.
... download firefox developer edition general activation firebug's activation is url based respecting the same origin policy.
...And 6 more matches

Creating a Skin for Firefox/Getting Started - Archive of obsolete content
download the latest version of firefox and install it.
... extract theme while you can hypothetically begin with any theme already designed for firefox, for the sake of consistency we'll speak as though everyone is editing the default firefox theme.
... this is located in the file classic.jar found in the firefox installation directory.
...And 5 more matches

Creating a Firefox sidebar
web publishers can offer visitors a firefox sidebar to encourage their engagement.
... there are two ways to create a sidebar for firefox users: the social api and an extension.
... an extension an extension is a kind of add-ons that adds new functionalities to firefox.
...And 5 more matches

Firefox and the "about" protocol
there is a lot of useful information about firefox hidden away behind the about: url protocol.
... available about: urls depend on your specific firefox version.
... here is a complete list of urls in the about: pseudo protocol: about: page description about:about provides an overview of all about: pages available for your current firefox version about:addons add-ons manager about:buildconfig displays the configuration and platform used to build firefox about:cache displays information about the memory, disk, and appcache about:checkerboard switches to the checkerboarding measurement page, which allows to detect checkerboarding issues about:config provides a way to inspect and change firefox preferences and settings about:compat lists overriding site compatability fixes, linked to specific bug issues.
...And 5 more matches

Firefox UI considerations for web developers
there are a number of places within the firefox user interface where web sites are listed for the user to choose a destination to visit or a site to manage in some way.
... one example is the new tab page, which includes a "top sites" section showing sites you visit that firefox thinks you're likely to want to visit again, as well as potentially some sites that have been pinned to always appear in that space.
... firefox's top sites box in this article, we take a look at how to influence the appearance of your site in firefox user interface elements such as the top sites box.
...And 5 more matches

Network request details - Firefox Developer Tools
the screenshots and descriptions in this section reflect firefox 78.
...(there may be some exceptions, such as x-firefox-spdy, which is added by firefox.) you can copy some or all of the response header in json format by using the context menu: if you select copy, a single key word, value pair is copied.
...ess-global=11-jun-2019;https=1" }, { "name": "x-cache", "value": "cp1075 pass, cp1075 pass" }, { "name": "x-cache-status", "value": "pass" }, { "name": "x-client-ip", "value": "204.210.158.136" }, { "name": "x-content-type-options", "value": "nosniff" }, { "name": "x-firefox-spdy", "value": "h2" }, { "name": "x-frame-options", "value": "sameorigin" }, { "name": "x-powered-by", "value": "hhvm/3.18.6-dev" }, { "name": "x-search-id", "value": "esvan0r5bnnwscyk2wq09i1im" }, { "name": "x-varnish", "value": "766019457, 417549316" } ] }, "req...
...And 5 more matches

Edit fonts - Firefox Developer Tools
this article provides a tour of the font tools available in the firefox devtools.
... note: the updated font tools as shown in this article are available in firefox 63 onwards; if you are using an older version of firefox the tools will not look or behave quite the same, but they will be similar (most notably the font editor will not be available).
...in firefox 61 and 62, this section does not exist.
...And 5 more matches

Firefox addons developer guide - Archive of obsolete content
there should be some introductory text on the table of contents page at https://developer.mozilla.org/en/firefox_addons_developer_guide obviously there are a number of fixme items in the content that need dealing with, but those are already known.
... each chapter should be tagged appropriately, based on content, and every chapter should include the tag "firefox addons developer guide".
... the stuff about installing the dom inspector (https://developer.mozilla.org/en/firefox_addons_developer_guide/let%27s_build_a_firefox_extension#install_the_dom_inspector) is not accurate for firefox 3 or later, since it's no longer included in the firefox installer and must be downloaded from amo.
...And 4 more matches

The Firefox codebase: CSS Guidelines
this document contains guidelines defining how css inside the firefox codebase should be written, it is notably relevant for firefox front-end engineers.
... writing cross-platform css firefox supports many different platforms and each of those platforms can contain many different configurations: windows 7, 8 and 10 default theme aero basic (windows 7, 8) windows classic (windows 7) high contrast (all versions) linux macos file structure the browser/ directory contains styles specific to firefox the toolkit/ directory contains styles that are shared acros...
... colors for common areas of the firefox interface (panels, toolbar buttons, etc.), mozilla-central often comes with some useful css variables that are adjusted with the correct values for different platform configurations, so using those css variables can definitively save some testing time, as you can assume they already work correctly.
...And 4 more matches

Browser Console - Firefox Developer Tools
to enable it set the devtools.chrome.enabled preference to true in about:config, or set the "enable browser chrome and add-on debugging toolboxes" (firefox 40 and later) option in the developer tool settings.
... opening the browser console you can open the browser console in one of two ways: from the menu: select "browser console" from the web developer submenu in the firefox menu (or tools menu if you display the menu bar or are on macos).
... you can also start the browser console by launching firefox from the command line and passing the -jsconsole argument: /applications/firefoxaurora.app/contents/macos/firefox-bin -jsconsole the browser console looks like this: you can see that the browser console looks and behaves very much like the web console: most of the window is occupied by a pane that display messages.
...And 4 more matches

Toolbox - Firefox Developer Tools
the toolbox provides a single home for most of the developer tools that are built into firefox.
... there are a few different ways to open the toolbox: select "toggle tools" from the web developer menu (under "tools" on os x and linux, or "firefox" on windows) click the wrench icon (), which is in the main toolbar or under the hamburger menu (), then select "toggle tools" activate any tool hosted in the toolbox (for example, the javascript debugger or the page inspector) press ctrl + shift + i on windows and linux, or cmd + opt + i on os x.
... by default, the window appears docked to the bottom side of the firefox window, but you can detach it if you like.
...And 4 more matches

Accessibility Inspector - Firefox Developer Tools
accessing the accessibility inspector when you first open any of the other developer tools, the accessibility features are turned off (unless you've already got them turned on in another browser tab, or got the firefox accessibility engine started already, e.g., you might be a screenreader user or tester).
...starting in firefox 79, it is automatically enabled when you do one of the following: choose accessibility in the tools > web developer menu.
...note that this works correctly as of firefox 62 (bug 1467381).
...And 3 more matches

Tutorial: Set a breakpoint - Firefox Developer Tools
this page shows how you can try out the debugger api yourself using firefox’s scratchpad.
... this tutorial was tested against firefox 58 beta and nightly.
... it does not work in firefox 57.
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Basic operations - Firefox Developer Tools
opening the memory tool before firefox 50, the memory tool is not enabled by default.
... to enable it, open the developer tool settings, and check the "memory" box under "default firefox developer tools": from firefox 50 onwards, the memory tool is enabled by default.
... to load a snapshot from an existing .fxsnapshot file, click the import button, which looks like a rectangle with an arrow rising from it (before firefox 49, this button was labeled with the text "import..."): you'll be prompted to find a snapshot file on disk.
...And 3 more matches

Waterfall - Firefox Developer Tools
new in firefox 46: if the gc event was caused by allocation pressure, a link appears, labeled "show allocation triggers".
... stack at end (new in firefox 41).
... garbage collection red markers in the waterfall represent garbage collection (gc) events, in which spidermonkey (the javascript engine in firefox) walks the heap looking for memory that's no longer reachable and subsequently releasing it.
...And 3 more matches

Responsive Design Mode - Firefox Developer Tools
toggling responsive design mode there are three ways to toggle responsive design mode: from the firefox menu: select responsive design mode from the web developer submenu in the firefox menu (or tools menu if you display the menu bar or are on macos).
... orientation (portrait or landscape) - this setting persists between sessions screenshots are saved to firefox's default download location.
... dpr (pixel ratio) - beginning with firefox 68, the dpr is no longer editable; create a custom device in order to change the dpr throttling - a drop-down list where you can select the connection throttling to apply, for example 2g, 3g, or lte enable/disable touch simulation - toggles whether or not responsive design mode simulates touch events.
...And 3 more matches

File and Directory Entries API support in Firefox - Web APIs
mozilla instead opted to implement other apis which can be used to solve many of the same problems, such as indexeddb; see the blog post why no filesystem api in firefox?
...this subset of the api provided by chrome is still not fully specified; however, for web compatibility reasons, it was decided to implement a subset of the api in firefox; this was introduced in firefox 50.
... this article describes how the firefox implementation of the file and directory entries api differs from other implementations and/or the specification.
...And 3 more matches

Theme changes in Firefox 3 - Archive of obsolete content
this article covers the changes that need to be made to update a firefox theme to work properly in firefox 3.
... note: we could use an article called updating themes for firefox 3 that would serve as a how-to guide for updating themes.
... filename css file details changes to the default theme the table below lists changes made in the default theme for firefox 3; you can use this information as a starting point for figuring out the changes you need to make.
...And 2 more matches

Theme changes in Firefox 4 - Archive of obsolete content
this article covers changes in firefox 4 that affect theme developers.
... omni.jar firefox 4 achieves performance improvements by moving many of its internal parts from being standalone files or sets of jar files into just one jar file; this reduces the amount of i/o needed to load firefox.
... } to use large icons for add-on buttons in the bookmarks toolbar when the related user preference is set: #navigator-toolbox[iconsize="large"] > #personaltoolbar { counter-reset: largeicons; } to use large icons everywhere, including the menu bar, regardless of the user preference: #navigator-toolbox > toolbar, #addon-bar { counter-reset: largeicons; } creating a theme that works for firefox 4 on mac os x create a new directory (for example, my_theme).
...And 2 more matches

Mozilla Firefox - MDN Web Docs Glossary: Definitions of Web-related terms
mozilla firefox is a free open-source browser whose development is overseen by the mozilla corporation.
... firefox runs on windows, os x, linux, and android.
... first released in november 2004, firefox is completely customizable with themes, plug-ins, and add-ons.
...And 2 more matches

Performance best practices for Firefox front-end engineers
this guide will help firefox developers working on front-end code produce code which is as performant as possible—not just on its own, but in terms of its impact on other parts of firefox.
...if you need more elevated privileges than a standard worker allows, consider using a chromeworker, which is a firefox-only api which lets you create workers with more elevated privileges.
...however, as of firefox 49, the nsidomwindowutils.elementsrestyled attribute records a count of how many style calculations have occurred for a particular dom window.
...And 2 more matches

Set event listener breakpoints - Firefox Developer Tools
starting with firefox 69, debugging an application that includes event handlers is simplified because the debugger now includes the ability to automatically break when the code hits an event handler.
...all of the standard events supported in your version of firefox are listed, arranged by which api or api area they're part of.
... logging on events in firefox 71 onwards, the “log” checkbox is available in the event listener breakpoints list.
...And 2 more matches

Dominators view - Firefox Developer Tools
the dominators view is new in firefox 46.
... starting in firefox 46, the memory tool includes a new view called the dominators view.
...it looks something like this: the dominators view consists of two panels: the dominators tree panel shows you which nodes in the snapshot are retaining the most memory the retaining paths panel (new in firefox 47) shows the 5 shortest retaining paths for a single node.
...And 2 more matches

Style Editor - Firefox Developer Tools
from firefox 40 onwards, the style sheet pane also includes a context menu that lets you open the selected style sheet in a new tab.
... the media sidebar works especially well with responsive design view for creating and debugging responsive layouts: from firefox 46 onwards, if an @media rule contains a screen size in a condition, then it is made clickable: clicking it then resizes the screen to that size using the responsive design view: creating and importing style sheets you can create a new style sheet by clicking the new button in the toolbar.
...from firefox 29 onwards, the style editor can understand css source maps.
...And 2 more matches

The JavaScript input interpreter - Firefox Developer Tools
starting in firefox 76, if the code snippet is more than five lines long, only the first five lines are echoed in the console, preceeded by a disclosure triangle (or "twistie"), and followed by an ellipsis (…).
... instant evaluation this feature is available in firefox nightly, in versions labeled 74 and later.
... copy() new in firefox 38.
...And 2 more matches

Listening to events in Firefox extensions - Archive of obsolete content
pageshow event this event works the same as the load event, except that it fires every time the page is loaded (whereas the load event doesn't fire in firefox 1.5 when the page is loaded from cache).
... if you call javascript functions as part of the pageshow event, you can ensure these functions are called when the page is loaded in browsers other than firefox 1.5 by calling the pageshow event as part of the load event, as shown in the sample later in this article.
... firefox 1.5 tries to simulate load events in the same order they would occur when the page is initially loaded.
... how events are used by firefox the firefox frontend already listens for a number of these progress events from web pages.

Building Firefox with Rust code - Archive of obsolete content
please instead refer to the documentation found within the modern firefox build system documentation; specifically, the section called including rust code in firefox.
... firefox uses the rust programming language extensively.
... this page is a rough guide for people using rust in firefox.
...our goal is to always ship a firefox release build with a stable rust toolchain release.

XUL Changes for Firefox 1.5 - Archive of obsolete content
this lists the most notable changes to xul in firefox 1.5 (gecko 1.8).
... for other changes you should be aware of, see adapting xul applications for firefox 1.5.
... for more information see using firefox 1.5 caching.
...this has been fixed in firefox 1.5 and all code depending on this non zero-based behaviour should be changed.

Mozilla.dev.apps.firefox-2006-10-06 - Archive of obsolete content
summary: mozilla.dev.apps.firefox - september 30 - october 6, 2006 announcements vista compatibility lab mike schroepfer announced the current work being done testing mozilla products with vista.
... discussions firefox trunk and rc1 slowdown using tabs discussion regarding certain theme components (specifically alpha-transparency) creating a high cpu load on os/2.
... title case capitalization rules in firefox discussion regarding rules for capitalizing the first letter of firefox menu items in the ff ui.
... places in firefox 3 discussion regarding places (a new system for storing bookmarks, histroy and other page info) in firefox 3.

Create Your Own Firefox Background Theme - Archive of obsolete content
how to create your own background theme themes are made up of a "header" graphic image file, which skins the default firefox ui background.
... firefox may reveal more of the lower portion of the image if another toolbar or other ui element is added to the top of the window.
... creating a theme footer image in older versions of firefox, or newer versions with certain add-ons installed, the footer image is displayed as the background of the bottom of the browser window, behind the add-on and find bars.
... firefox may reveal more of the upper portion of the image if the find bar is open or if an extension adds more height to the bottom of the window.

Firefox Sync
firefox sync is built into the desktop versions of firefox, as well as firefox for android and firefox for ios.
... firefox sync synchronizes state and configuration data used by the browser, such as bookmarks, history, preferences, bookmarks, and so forth among all your devices.
... it uses firefox accounts for account, authentication and key management.
...your data can only be decrypted by someone who is able to log in to your firefox account (ie, that knows your firefox accounts password and has access to your email for the verification required during the initial login).

DOM Inspector - Firefox Developer Tools
this tool is an add-on for xul-based applications such as firefox and thunderbird.
... if you are looking for the dom inspector that's built into firefox, see the documentation for the page inspector.
... getting dom inspector firefox & thunderbird you may download and install the dom inspector from the amo web site.
... (thunderbird users browsing amo in firefox should save the installation link, or visit the dom inspector for thunderbird page.) thunderbird 2 dom inspector for thunderbird 2 is available from thunderbird add-ons.

Debugging service workers - Firefox Developer Tools
in this article we will look at debugging service workers using the firefox devtools application panel.
... debug important: the debug button is currently enabled only in firefox nightly.
... the firefox devtools’ storage tab has a cache storage section that lists all the different caches you have stored under each different origin.
...if you want to see a list of information concerning all the service workers registered on your browser, you can visit about:debugging#/runtime/this-firefox.

Debugger - Firefox Developer Tools
(allowing the handler to substitute its own value for the new global object doesn’t seem useful.) this handler method is only available to debuggers running in privileged code (“chrome”, in firefox).
... an html5 windowproxy object (an “outer window”, in firefox terminology), which is treated as if the window object of the browsing context’s active document (the “inner window”) were passed.
... this method is only available to debuggers running in privileged code (“chrome”, in firefox).
...(naturally, once the function has returned, the array’s debugger.object instances strongly reference the globals they refer to.) this handler method is only available to debuggers running in privileged code (“chrome”, in firefox).

JSON viewer - Firefox Developer Tools
the json viewer is new in firefox 44.
... before firefox 53, the json viewer is enabled by default only in firefox developer edition and firefox nightly.
... from firefox 53 onwards, the json viewer is also enabled by default in beta and the normal release version of firefox.
... firefox includes a json viewer.

Page inspector 3-pane mode - Firefox Developer Tools
feature summary from firefox 62 onwards, the page inspector has a new mode available — 3-pane mode.
... enabling the 3-pane inspector pre-firefox 62 in earlier versions of firefox (since firefox 59/60), you can enable 3 pane mode in release/beta by going to about:config and flipping the following prefs to true: devtools.inspector.split-rule-enabled — this switches 3-pane mode on and off.
... in firefox 61, these preferences got renamed to: devtools.inspector.three-pane-enabled devtools.inspector.three-pane-toggle you need to flip these two to true in release/beta to test the feature in firefox 61.
... note: the 3-pane inspector is already enabled in nightly/developer edition before firefox 62.

Work with animations - Firefox Developer Tools
starting in firefox 48, it will show animations applied to the ::before and ::after pseudo-elements.
...the box below contains a grayscale icon, representing firefox developer edition.
...hovering over these selectors, we can see that those elements are, respectively, the browser name "firefox developer edition" and the browser icon.
...if you look at this in the animation inspector in firefox 49+, you'll see that: the white lightning bolt icon now indicates whether all the animation properties have been optimized by running them through the compositor, where possible.

Web Audio Editor - Firefox Developer Tools
notice: this tool has been deprecated and will soon be removed from firefox.
... opening the web audio editor the web audio editor is not enabled by default in firefox 32.
... connections to audioparams displaying connections to audioparams is new in firefox 34.
... bypassing nodes new in firefox 38.

How Thunderbird and Firefox find their configuration files - Archive of obsolete content
how thunderbird and firefox find their configuration files thunderbird looks into the binary %appdata%\thunderbird\profiles.ini file for its "registry", which contains, amongst other information, a pointer to the directory where the profile is stored (usually located in %appdata%\thunderbird\profiles\profilename).
... likewise, firefox uses a similar file, located in %appdata%\mozilla\firefox\profiles.ini.
...unlike mozilla's binary registry.dat file, thunderbird's and firefox' profiles.ini file is a readable text file.

Creating a Skin for Firefox - Archive of obsolete content
introduction in order to create a skin for firefox, there are three things you need to know: how to edit images, how to extract zip files, and how to modify css.
... firefox uses standard gif, png, and jpeg images for the buttons and css to style everything else in the interface.
...if you want to change the functionality of firefox, you'll have to look into modifying the chrome, which is beyond the scope of this document.

Firefox OS - MDN Web Docs Glossary: Definitions of Web-related terms
firefox os is mozilla's mobile operating system, based on linux and firefox's powerful gecko rendering engine.
... firefox os consists mainly of gaia, gecko, and gonk.
... learn more general knowledge firefox os on wikipedia ...

Color vision simulation - Firefox Developer Tools
the simulator in the accessibility inspector in firefox developer tools lets you see what a web page would look like to users with various forms of color vision deficiency (better known as "color blindness"), as well as contrast sensitivity loss.
... to enable this feature, you must have webrender enabled; it may be enabled by default, depending on your configuration of firefox.
... in the firefox configuration editor, make sure the gfx.webrender.all option is set to true.

Introduction to DOM Inspector - Firefox Developer Tools
the dom inspector is a mozilla extension that you can access from the tools > web development menu in seamonkey, or by selecting the dom inspector menu item from the tools menu in firefox and thunderbird, or by using ctrl/cmd+shift+i in either application.
... note: starting with firefox 3, the dom inspector is not included in firefox by default; instead, you must download and install it from the mozilla add-ons web site.
...in firefox and seamonkey browser, these will be the webpages you have opened in tabs.

DOM Property Viewer - Firefox Developer Tools
the dom property viewer is new in firefox 48.
...to enable it, open the developer tool settings and check the "dom" box under "default firefox developer tools".
... opening the dom property viewer once enabled, you can open the dom property viewer by selecting "dom" from the web developer submenu in the firefox menu panel (or tools menu if you display the menu bar or are on macos), or by pressing its ctrl + shift + w keyboard shortcut.

Step through code - Firefox Developer Tools
function call, in which case enter the function being called step out: run to the end of the current function, in which case, the debugger will skip the return value from a function, returning execution to the caller split console when paused, you can press the esc key to open and close the split console to gain more insight into errors and variables: pause on breakpoints overlay since firefox 70, when your code is paused on a breakpoint an overlay appears on the viewport of the tab you are debugging.
... if you want to turn this feature off, since firefox 71 you can do so by going to about:config in a new tab, setting the devtools.debugger.features.overlay pref to false, and restarting the browser.
... inline variable preview new in firefox 71, the source pane now gives you an instant preview of the variables on each line of code you've stepped through.

Tutorial: Show Allocations Per Call Path - Firefox Developer Tools
the saved stacks // are new, and firefox doesn't yet understand that they // are safe for chrome code to use, so we must tell it // so explicitly.
...indeed, this display shows that popup.xml and content.js, which are internal components of firefox, allocated more objects in the page's compartment than the page itself.
... (we will probably revise the allocation log to present such allocations in a way that is more informative, and that exposes less of firefox's internal structure.) as expected, the onclick handler is responsible for all allocation done by the page's own code.

Debugger.Object - Firefox Developer Tools
for example, in firefox, code in privileged compartments sees content dom element objects without redefinitions or extensions made to that object's properties by content code.
... (in firefox terminology, privileged code sees the element through an "xray wrapper".) to ensure that debugger code sees each object just as the debuggee would, each debugger.object instance presents its referent as it would be seen from a particular compartment.
...for example, in firefox, a metadata object for a javascript module's global object might look like this: { "type":"jsm", "uri":"resource:://gre/modules/xpcomutils.jsm" } firefox provides [debuggerhostannotationsforfirefox annotations] for its host objects.

Examine and edit HTML - Firefox Developer Tools
since firefox 52, the inspector displays these whitespace nodes, so you can see where the gaps in your markup come from.
... note: shadow dom inspection was implemented in firefox 61, but was hidden behind the dom.webcomponents.shadowdom.enabled pref until firefox 63.
... from firefox 44, pressing the keyboard shortcut s will also scroll the selected node into view.

UI Tour - Firefox Developer Tools
the following image shows the 2-pane layout: in 2-pane mode, the inspector includes the html pane, and the css pane, which can contain one of six tools: rules view layout view computed view changes view compatibility view (firefox developer edition 77 and later) fonts view animations view the following image shows the 3-pane mode (available from firefox 62 onwards) which moves the css rules view into a separate pane in the center of the inspector.
...note that before firefox 50, the box model view did not appear in the "computed view" tab, but had its own tab.
... computed view the computed view shows you the complete computed css for the selected element (the computed values are the same as what getcomputedstyle would return.): compatibility view starting with firefox developer edition version 77, the compatibility view shows css compability issues, if any, for properties applied to the selected element, and for the current page as a whole.

Remote Debugging - Firefox Developer Tools
you can use the firefox developer tools on your desktop to debug web sites and web apps running in other browsers or runtimes.
... you can connect the developer tools to gecko-based runtimes like firefox desktop, firefox for android, and thunderbird.
... firefox desktop firefox for android over usb ...

Taking screenshots - Firefox Developer Tools
the screenshot is saved to the browser's "downloads" directory: copying screenshots to the clipboard from firefox 53, you can also copy the screenshot to the clipboard.
... taking screenshots with the web console if you need to specify a different device-pixel-ratio, set a delay before taking the screenshot, or specify your own file name, starting in firefox 62 you can use the :screenshot helper function in the web console.
...small portions of this section have been borrowed from his firefox’s :screenshot command article.

Firefox addons developer guide - Archive of obsolete content
the firefox add-ons developer guide was contributed by the mozilla japan community; it covers how to go about building firefox extensions using xpcom and xul.
... next » introduction to extensions technologies used in developing extensions introduction to xul—how to build a more intuitive ui using xpcom—implementing advanced processes let's build a firefox extension firefox extensions and xul applications license and authors next » ...

Firefox Sync - Archive of obsolete content
these components and services include: firefox sync client the sync client bundled with mozilla products.
... firefox home an ios application that functions as a sync client.

Mozilla.dev.apps.firefox-2006-09-29 - Archive of obsolete content
summary: mozilla.dev.apps.firefox - september 22-29, 2006 announcements bon echo 20060921 nightly to recieve "major update" offer mike beltnzer announced that 'users running the bon echo 20060921 nightly build will be offered the chance to upgrade to a "new version"' firefox start up performance boris zbarsky recently performed some profiling of firefox's start up - these are some of the details discussions problem handling dmg files on mac discussion about why sometimes dmg files are not mounted correctly after they are downloaded.
... firefox 2 on windows vista discussion about the "state of affairs" of firefox 2 on windows vista rc1 - update for rc1 listed in update history as 'install pending' right-click "copy email address" - bug 353102 a proposed bug fix to the 'copy email address' bug how to use the rss feeds discovery & parsing tool in another open source project?

Theme changes in Firefox 3.5 - Archive of obsolete content
this article covers the changes that need to be made to update a firefox theme to work properly in firefox 3.5.
... all known changes for a list of all the known changes see: mozillazine's forum: theme changes for firefox 3.5 ...

Using JavaScript Generators in Firefox - Archive of obsolete content
warning: this technique works only in firefox, not ie, chrome, safari, etc.
... generators can be used to simplify asynchronous code in firefox by opting in to using javascript version 1.7 or later.

Building Firefox with Debug Symbols
by default, a release build of firefox will not generate debug symbols suitable for debugging or post-processing into the breakpad symbol format.
... use the following mozconfig settings to do a build with symbols: building firefox with symbols there is a single configure option to enable building with symbols on all platforms.

The Web Developer Menu - Firefox Developer Tools
the web developer menu is the main way to access the developer tools that are built into firefox.
... on os x and linux, it's under the "tools" menu: on windows 7, it's under the "firefox" menu: you'll see that the menu is split into three sections: the first section lists tools that are hosted in the toolbox, which is a dedicated window for developer tools the second section lists integrated tools that are not hosted in the toolbox, as well as any tools installed as add-ons (you'll see in the windows screenshot above that i've installed the firefox os simulator) the third section, "get more tools", is a link to more web development add-ons for firefox ...

Add-ons - Firefox Developer Tools
developer tools that are not built into firefox, but ship as separate add-ons.
...this add-on is no longer available, as it requires older versions of firefox.

Debugger keyboard shortcuts - Firefox Developer Tools
note: before firefox 66, the combination ctrl + shift + s on windows and linux or cmd + opt + s on macos would open/close the debugger.
... from firefox 66 and later, this is no longer the case.

UI Tour - Firefox Developer Tools
ignore (since firefox 76) ignore files in this directory causes all files within the selected directory to be skipped by the debugger.
...the setting is reset when the developer tools are closed (except in firefox 77, see bug 1640318).

Debugger.Object - Firefox Developer Tools
for example, in firefox, code in privileged compartments sees content dom element objects without redefinitions or extensions made to that object’s properties by content code.
... (in firefox terminology, privileged code sees the element through an “xray wrapper”.) to ensure that debugger code sees each object just as the debuggee would, each debugger.object instance presents its referent as it would be seen from a particular compartment.

Debugger-API - Firefox Developer Tools
both firefox’s built-in developer tools and the firebug add-on use debugger to implement their javascript debuggers.
...(firefox’s builtin tools have a protocol defined for this purpose.) in gecko, the debugger api is available to chrome code only.

DevTools API - Firefox Developer Tools
if you notice any inconsistency, please let the firefox developer tools team know.
... introduction the devtools api provides a way to register and access developer tools in firefox.

Eyedropper - Firefox Developer Tools
the eyedropper is new in firefox 31.
...from firefox 31, the popup contains an eyedropper icon: click this icon to activate the eyedropper.

Aggregate view - Firefox Developer Tools
before firefox 48, this was the default view of a heap snapshot.
... after firefox 48, the default view is the tree map view, and you can switch to the aggregate view using the dropdown labeled "view:": the aggregate view looks something like this: it presents a breakdown of the heap's contents, as a table.

Inspecting web sockets - Firefox Developer Tools
since firefox 71, the network monitor has had the ability to inspect web socket connections.
... control (available starting in firefox 76).

Examine and edit CSS - Firefox Developer Tools
you can: toggle pseudo-classes; toggle classes; add a new rule; change the display based on the color scheme preference (as of firefox 72, you must set devtools.inspector.color-scheme-simulation.enabled to true in the configuration editor to enable this feature); change the display based on print media rules.
... view @media rules for color-scheme-preference as of firefox 72, you must set devtools.inspector.color-scheme-simulation.enabled to true in the configuration editor to enable this feature.

Animation inspector example: CSS transitions - Firefox Developer Tools
firefox-logo-animation example animation using css transitions.
... html content <div class="channel"> <img src="https://udn.realityripple.com/samples/e6/a96484b5c3.png" class="icon"/> <span class="note">firefox developer edition</span> </div> css content .channel { padding: 2em; margin: 0.5em; box-shadow: 1px 1px 5px #808080; margin: 1.5em; } .channel > * { vertical-align: middle; line-height: normal; } .icon { width: 50px; height: 50px; filter: grayscale(100%); transition: transform 750ms ease-in, filter 750ms ease-in-out; } .note { margin-left: 1em; font: 1.5em "open sans",arial,sans-serif; overflow: hidden; white-space: nowrap; display: inline-block; opacity: 0; width: 0; transition: opacity 500ms 150ms, width 500ms 150ms; } .icon#selected { filter: grayscale(0%); transform: scale(1.5); } .icon#selected+s...

Animation inspector example: Web Animations API - Firefox Developer Tools
firefox-logo-animation example animation using the web animations api.
... html content <div class="channel"> <img src="https://udn.realityripple.com/samples/e6/a96484b5c3.png" id="icon"/> <span id="note">firefox developer edition</span> </div> css content .channel { padding: 2em; margin: 0.5em; box-shadow: 1px 1px 5px #808080; margin: 1.5em; } .channel > * { vertical-align: middle; line-height: normal; } #icon { width: 50px; height: 50px; filter: grayscale(100%); } #note { margin-left: 1em; font: 1.5em "open sans",arial,sans-serif; overflow: hidden; white-space: nowrap; display: inline-block; opacity: 0; width: 0; } javascript content var iconkeyframeset = [ { transform: 'scale(1)', filter: 'grayscale(100%)'}, { filter: 'grayscale(100%)', offset: 0.333}, { transform: 'scale(1.5)', offset: 0.666 }, { transform: '...

Page inspector keyboard shortcuts - Firefox Developer Tools
page up decrement selected value by 100 shift + page down shift + page down shift + page down increment selected value by 10 shift + up arrow shift + up arrow shift + up arrow decrement selected value by 10 shift + down arrow shift + down arrow shift + down arrow increment selected value by 0.1 alt + up arrow (ctrl + up arrow from firefox 60 onwards.) alt + up arrow alt + up arrow (ctrl + up arrow from firefox 60 onwards.) decrement selected value by 0.1 alt + down arrow (ctrl + down arrow from firefox 60 onwards).
... alt + down arrow alt + down arrow (ctrl + down arrow from firefox 60 onwards).

Allocations - Firefox Developer Tools
the allocations view is new in firefox 46.
... to reduce the impact on responsiveness, spidermonkey (the javascript engine in firefox) can perform gc in small increments, letting the program run in between.

Shader Editor - Firefox Developer Tools
note: this tool has been deprecated and will soon be removed from firefox.
...to enable it, open the toolbox settings and check "shader editor" in the "default firefox developer tools" item.

Web Console Helpers - Firefox Developer Tools
:block (starting in firefox 80) followed by an unquoted string, blocks requests where the url contains that string.
... :unblock (starting in firefox 80) followed by an unquoted string, removes blocking for urls containing that string.

Web Console UI Tour - Firefox Developer Tools
settings ("gear" menu): new in firefox 71, you can click the gear icon to access the new settings menu, where you can toggle the following features on and off: persist logs: when enabled, the console doesn't clear on page reload, or new page load.
... in firefox 71 onwards, there is a new "split pane" icon on the right hand side of the command line — clicking this will open the new console multi-line mode.

Firefox Compatibility - Archive of obsolete content
this page is out of date: now the sdk ships inside firefox, compatibility between the sdk modules and firefox versions is no longer an issue.

Add a Menu Item to Firefox - Archive of obsolete content
the sdk doesn't provide a built-in api to add new menu items to firefox.

Download Manager improvements in Firefox 3 - Archive of obsolete content
firefox 3 offers improvements to the download manager that allow multiple progress listeners, use of the storage api for data management, download resuming, and more.

Firefox - Archive of obsolete content
out-of-date information about the firefox project.

Firefox Developer Tools - Archive of obsolete content
these are articles related to the firefox developer tools, which are no longer current.

Building Firefox for macOS
moved in-tree: https://firefox-source-docs.mozilla.org/setup/macos_build.html ...

Building Firefox
page moved in-tree https://firefox-source-docs.mozilla.org/contributing/contribution_quickref.html ...

Building Firefox for Windows
documentation moved in-tree: https://firefox-source-docs.mozilla.org/setup/windows_build.html ...

Customizing Firefox
firefox enterprise documentation is now located on support.mozilla.org.

Multiprocess Firefox
some elements of multiprocess firefox have been retained for compatibility.

Security best practices for Firefox front-end engineers
this article will help firefox developers understand the security controls in place and avoid common pitfalls when developing front-end code for firefox.

Firefox Operational Information Database: SQLite
a large amount of operational information about websites visited and browser configuration is stored in relational databases in sqlite used by firefox.

Life After XUL: Building Firefox Interfaces with HTML
this page gathers technical solutions to common problems encountered by teams shipping html-based interfaces inside firefox.

Measuring Code Coverage on Firefox
documentation moved in-tree: https://firefox-source-docs.mozilla.org/tools/code-coverage/index.html ...

3D view - Firefox Developer Tools
from firefox 47 onwards, 3d view is no longer available.

DOM Inspector internals - Firefox Developer Tools
(above, seamonkey and firefox, respectively.) there are several overlays from the resources/contents/ directory that do not fall into the category of host-integration overlays.

Inspecting web app manifests - Firefox Developer Tools
in this article we will look at inspecting app manifests using the firefox devtools application panel.

Application - Firefox Developer Tools
accessing the application panel the application panel is available on the standard devtools tab menu under application, in firefox 79+.

Break on DOM mutation - Firefox Developer Tools
inline variable preview new in firefox 71, the source pane now gives you an instant preview of the variables on each line of code you've stepped through.

Access debugging in add-ons - Firefox Developer Tools
we are planning to deprecate the use by firefox add-ons of the techniques described in this document.

Breaking on exceptions - Firefox Developer Tools
starting in firefox 80, a disclosure triangle within the tooltip reveals a stack trace.

Examine, modify, and watch variables - Firefox Developer Tools
to see the docs for the old debugger, please visit debugger (before firefox 52).

Open the debugger - Firefox Developer Tools
there are three ways to open the debugger: select "debugger" from the web developer submenu in the firefox menu (or tools menu if you display the menu bar or are on mac os x) press ctrl + shift + z on windows and linux, or cmd + opt + z on macos (starting in firefox 71; prior to firefox 66, the letter in this shortcut was s).

Set a breakpoint - Firefox Developer Tools
inline variable preview new in firefox 71, the source pane now gives you an inline preview of the variables on each line of code you've stepped through: this is a very useful timesaver when stepping through your code.

Use watchpoints - Firefox Developer Tools
in the firefox debugger, this information can be provided by watchpoints.

Set an XHR breakpoint - Firefox Developer Tools
inline variable preview new in firefox 71, the source pane now gives you an instant preview of the variables on each line of code you've stepped through.

Source map errors - Firefox Developer Tools
the message looks a little different in this case: in this case, the error will also be displayed in the source tab in the debugger: networkerror when attempting to fetch resource a bug in firefox prevents it from loading source maps for web extensions.

Debugger.Memory - Firefox Developer Tools
this section covers some areas where firefox’s actual behavior deviates from what one might expect from the specified behavior of the web platform.

Debugger.Script - Firefox Developer Tools
the result refers to the global directly, not via a wrapper or a windowproxy (“outer window”, in firefox).

Tree map view - Firefox Developer Tools
the tree map view is new in firefox 48.

Memory - Firefox Developer Tools
the basics opening the memory tool taking a heap snapshot comparing two snapshots deleting snapshots saving and loading snapshots recording call stacks analyzing snapshots the tree map view is new in firefox 48, and the dominators view is new in firefox 46.

Network monitor toolbar - Firefox Developer Tools
(prior to firefox 77, this toolbar was arranged somewhat differently.) it provides: an icon to clear the network request list.

Network Monitor - Firefox Developer Tools
the network monitor shows you all the network requests firefox makes (for example, when it loads a page, or due to xmlhttprequests), how long each request takes, and details of each request.

Edit CSS filters - Firefox Developer Tools
saving filter presets from firefox 42 onwards, you can also add filters to a list of presets.

Edit Shape Paths in CSS - Firefox Developer Tools
browser support the shape path editor currently works for shapes generated via clip-path; it will also work for shapes generated via shape-outside as of firefox 62.

CSS Flexbox Inspector: Examine Flexbox layouts - Firefox Developer Tools
the flexbox inspector allows you to examine css flexbox layouts using the firefox devtools, which is useful for discovering flex containers on a page, examining and modifying them, debugging layout issues, and more.

Examine Event Listeners - Firefox Developer Tools
firefox can display: standard dom events jquery events react events ...

CSS Grid Inspector: Examine grid layouts - Firefox Developer Tools
the grid inspector allows you to examine css grid layouts using the firefox devtools, discovering grids present on a page, examining and modifying them, debugging layout issues, and more.

Reposition elements in the page - Firefox Developer Tools
new in firefox 48 starting in firefox 48 you can move absolutely positioned elements by dragging them around the page.

Select an element - Firefox Developer Tools
click the element to select it: starting in firefox 52, if you shift + click the element, then it is selected but the picker stays active.

Use the Inspector API - Firefox Developer Tools
firefox add-ons may access the following objects from the chrome://browser/content/devtools/inspector/inspector.xul context: window.inspector defined in inspector-panel.js.

View background images - Firefox Developer Tools
just hover over the rule: from firefox 41, if you right-click the image declaration, you'll see an option to copy the image as a data: url: ...

Page Inspector - Firefox Developer Tools
you can examine pages loaded in the local copy of firefox or in a remote target such as firefox for android.

Call Tree - Firefox Developer Tools
by default, the call tree doesn't split platform data out into separate functions, because they add a great deal of noise, and the details are not likely to be useful to people not working on firefox.

How to - Firefox Developer Tools
open the performance tools to open the performance tools: press shift + f5 select "performance" from the web developer submenu in the firefox menu (or tools menu if you display the menu bar or are on os x) select "performance" from tools button, in the toolbar, if you have one: record a profile to start a new recording, press the stopwatch icon in the recordings pane.

UI Tour - Firefox Developer Tools
allocations the allocations view is new in firefox 46.

Storage Inspector - Firefox Developer Tools
opening the storage inspector you can open the storage inspector by selecting "storage inspector" from the web developer submenu in the firefox menu panel (or tools menu if you display the menu bar or are on macos), or by pressing its shift + f9 keyboard shortcut.

Validators - Firefox Developer Tools
firefox extensions for validation quick reference sidebar tabs install devedge toolbox sidebars for quick access to web development references.

View Source - Firefox Developer Tools
this mishighlighting can be seen by viewing the source of firefox chrome files (such as xul documents).

Console messages - Firefox Developer Tools
assert() clear() count() dir() dirxml() error() exception() group() groupend() info() log() table() time() timeend() trace() warn() the console prints a stack trace for all error messages, like this: function foo() { console.error("it explodes"); } function bar() { foo(); } function dostuff() { bar(); } dostuff(); server server-side log messages was introduced in firefox 43, but removed in firefox 56.

Web console keyboard shortcuts - Firefox Developer Tools
search in the message display pane ctrl + f cmd + f ctrl + f open the object inspector pane ctrl + click ctrl + click ctrl + click clear the object inspector pane esc esc esc focus on the command line ctrl + shift + k cmd + opt + k ctrl + shift + k clear output ctrl + shift + l ctrl + l from firefox 67: cmd + k ctrl + shift + l command line interpreter these shortcuts apply when you're in the command line interpreter.

Rich output - Firefox Developer Tools
click on the triangle, and the object will be expanded to show its contents: starting with firefox 67 (available now in firefox developer) you can use the arrow keys on your keyboard to navigate through objects displayed in the console.

Web Console - Firefox Developer Tools
opening the web console you open the web console from a menu or with a keyboard shortcut: choose web console from the web developer submenu in the firefox menu (or tools menu if you display the menu bar or are on mac os x) press the ctrl+shift+k (command+option+k on os x) keyboard shortcut.

Index - Archive of obsolete content
currently, these are only supported on firefox mobile and firefox os.
...we will show how to do each of these things using the built-in components object provided by xulrunner application such as firefox and thunderbird.
... 29 firefox compatibility add-on sdk no summary!
...And 190 more matches

appearance (-moz-appearance, -webkit-appearance) - CSS: Cascading Style Sheets
the -moz-appearance and -webkit-appearance properties are non-standard versions of this propery, used (respectively) by gecko (firefox) and by webkit-based (e.g., safari) and blink-based (e.g., chrome, opera) browsers to achieve the same thing.
... note that firefox and edge also support -webkit-appearance, for compatibility reasons.
...starting with gecko/firefox 80, these uses were changed to -moz-default-appearance, which should never be used outside of internal stylesheets.
...And 76 more matches

ARIA Test Cases - Accessibility
tested ua/at combinations: dragon 10 with firefox 3 and ie 8 beta 2 jaws 9 & 10 with firefox 3 jaws 9 & 10 with ie beta 2 nvda 0.6p2 with firefox 3 orca with firefox 3 window-eyes 7 with ie 8 beta 2 and firefox 3 voiceover (leopard) with safari 4.0.2 zoom (leopard) with safari 4.0.2, firefox 3.x and opera 9.x zoomtext 9.1 with firefox 3 and ie 8 beta 2 test case structure test cases are organized as follows: test case links test d...
...etails expected at behavior markup notes results table at firefox ie opera safari jaws 9 - - - - jaws 10 - 1.
... markup used: role="alert" notes: results: at firefox ie opera safari jaws 9 passed fail n/a n/a jaws 10 passed fail - - voiceover (leopard) n/a n/a - fail window-eyes passed- not announced as "alert" fail - - nvda passed n/a - - zoom (leopard) pass n/a pass pass zoomtext - - - - orca ...
...And 48 more matches

Key Values - Web APIs
[1] in internet explorer (tested on release 9 and 11), as well as in all versions of firefox, the windows key is reported as "os" instead of as "meta".
... this will be changed in firefox per bug 1232918.
... until that's fixed, these keys are returned as "os" by firefox: vk_lwin (0x5b) and vk_rwin (0x5c) on windows, and gdk_key_super_l (0xffeb), gdk_key_super_r (0xffec), gdk_key_hyper_l (0xffed), and gdk_key_hyper_r (0xffee) on linux.
...And 46 more matches

Mozilla
add-ons add-ons allow developers to extend and modify the functionality of firefox.
... adding a new event this draft document covers how to add a new event to the mozilla (firefox) source code.
... adding a new word to the en-us dictionary occasionally bugs are filed pointing out situations where perfectly legitimate words are missing from the english spell check dictionary in firefox.
...And 44 more matches

Index
this can create a difficult situation for extension developers trying to support multiple gecko versions (firefox 2 and 3, for example).
... 8 generating guids add-ons, developing mozilla, developing_mozilla:tools, extensions, tools, xpcom guids are used in mozilla programming for identifying several types of entities, including xpcom interfaces (this type of guids is callled iid), components (cid), and legacy add-ons—like extensions and themes—that were created prior to firefox 1.5.
... add-ons can (and should) be identified with ids of the form extensionname@organization.tld since firefox 1.5.
...And 40 more matches

IDBObjectStore - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetidbobjectstorechrome full support 24 full support 24 no support 23 — 57prefixed prefixed implemented with the vendor prefix: webkitedge full...
... support 12firefox full support 16 full support 16 no support 10 — 16prefixed prefixed implemented with the vendor prefix: mozie partial support 10opera full support 15safari full support 7webview android full support yes full support yes no support ?
... — 57prefixed prefixed implemented with the vendor prefix: webkitchrome android full support 25 full support 25 no support 25 — 57prefixed prefixed implemented with the vendor prefix: webkitfirefox android full support 22opera android full support 14safari ios full support 8samsung internet android full support 1.5 full support 1.5 no support 1.5 — 7.0prefixed prefixed implemented with the vendor prefix: webkitaddchrome ...
...And 39 more matches

Permissions - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetpermissionschrome full support 43edge full support 79firefox full support 46ie no support noop...
...era full support yessafari no support nowebview android full support 43chrome android full support 43firefox android full support 46opera android full support yessafari ios no support nosamsung internet android full support 4.0accelerometer permissionchrome full support 62edge full support 79firefox ?
... safari no support nowebview android full support 62chrome android full support 62firefox android ?
...And 38 more matches

Command line options
in general, the syntax is as follows: application -option -option "argument" -option argument examples the following examples show the use of the "-profilemanager" command, which will open the profile manager prior to starting firefox or thunderbird: windows select run from windows start menu.
... enter the following command: firefox -profilemanager mac os x go to applications > utilities.
... open terminal and enter the following command: cd /applications/firefox.app/contents/macos ./firefox -profilemanager if you use firefox nightly, you can enter: cd /applications/firefoxnightly.app/contents/macos ./firefox -profilemanager linux open terminal and enter the following command: cd thunderbird installation directory ./thunderbird -profilemanager the example above invokes the "-profilemanager" command line option with mozilla's thunderbird mail client.
...And 35 more matches

Index - Web APIs
firefox follows this standard.
...it applies to all gecko-based applications (such as firefox) both in privileged (extensions) and unprivileged (web pages) code.
...the demonstrations provided here will work fine in any modern browser, including all versions of firefox and ie 5+.
...And 33 more matches

Fullscreen API - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfullscreen deprecatedchrome full support 71 full support 71 full support 15alternate name alternate name uses the non-standard name: webkit...
...isfullscreenedge full support ≤79 full support ≤79 full support ≤79alternate name alternate name uses the non-standard name: webkitisfullscreenfirefox full support 64 full support 64 no support 49 — 65disabled disabled from version 49 until version 65 (exclusive): this feature is behind the full-screen-api.unprefix.enabled preference (needs to be set to true).
... to change preferences in firefox, visit about:config.
...And 31 more matches

Selection API - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetselection experimentalchrome full support 1edge full support 12firefox full support 1notes full support ...
... 1notes notes the globaleventhandlers.onselectionchange and globaleventhandlers.onselectstart event handlers are supported as of firefox 52.ie full support 9opera full support 9safari full support 1webview android full support 1chrome android full support 18firefox android full support 4notes full support 4notes notes the globaleventhandlers.onselectionchange and globaleventhandlers.onselectstart event handlers are supported as of firefox 52.opera android full ...
...support 10.1safari ios full support 1samsung internet android full support 1.0addrange experimentalchrome full support 1edge full support 12firefox full support yesie ?
...And 31 more matches

Install Manifests - Archive of obsolete content
firefox or thunderbird) uses to determine information about an add-on as it is being installed.
... id the id of the extension, which must be one of the following: guid (firefox 1.0) a string formatted like so: extensionname@example.org the latter format is significantly easier to generate and manipulate.
... firefox 1.5 has checking to ensure that your id falls into one format or the other and will refuse to install add-ons that have malformed ids.
...And 30 more matches

Choosing the right approach - Learn web development
browser compatibility desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetsettimeoutchrome full support 30edge full support 12firefox full support 1 full support 1 ...
...nterval now defined on windoworworkerglobalscope mixin.ie full support 4opera full support 4safari full support 1webview android full support 4.4chrome android full support 30firefox android full support 4 full support 4 full support 52notes notes setinterval now defined on windoworworkerglobalscope mixin.opera android full support 10.1safari ios full support ...
... 1samsung internet android full support 3.0supports parameters for callbackchrome full support yesedge full support 12firefox full support yesie full support 10opera full support yessafari ?
...And 30 more matches

The Essentials of an Extension - Archive of obsolete content
rdf used to be the central storage mechanism for firefox, but it is now being replaced for a simpler database system.
...firefox needs this to distinguish your extension from other extensions, so it is required that you have an id that is unique.
...for firefox 2, localizing this file is a little more complicated.
...And 29 more matches

jpm - Archive of obsolete content
install a different version of firefox as of firefox 48, it is not possible to use unsigned add-ons (i.e.
... any add-on which you are in the process of developing) in the branded release or beta versions of firefox.
... thus, you will need to download and install a different version of firefox.
...And 27 more matches

Building a Theme - Archive of obsolete content
introduction this tutorial will take you through the steps required to build a very basic theme - one which updates the background color of the toolbars in firefox.
... note: this tutorial is about building themes for firefox 29 and later.
... other tutorials exist for building themes for earlier versions of firefox.
...And 27 more matches

Chapter 3: Introduction to XUL—How to build a more intuitive UI - Archive of obsolete content
and was originally published in japanese for the firefox developers conference summer 2007.
... shimoda-san is a co-author of firefox 3 hacks (o'reilly japan, 2008).
...like web pages, which display the same regardless of platform, applications marked up in xul will work the same in any environment where firefox runs.
...And 26 more matches

Setting up an extension development environment - Archive of obsolete content
these details apply to firefox, thunderbird, and seamonkey (version 2.0 and above).
... overview you'll create a new user profile to run your development specific firefox session.
... install firefox development extensions specifically for this new developer user profile.
...And 26 more matches

BasicCardResponse - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbasiccardresponsechrome no support noedge no support ≤18 — 79firefox full support 56notes disabled full support ...
...to change preferences in firefox, visit about:config.ie no support noopera no support nosafari ?
... webview android no support nochrome android full support 57firefox android full support 56notes disabled full support 56notes disabled notes available only in nightly builds.disabled from version 56: this feature is behind the dom.payments.request.enabled preference (needs to be set to true) and the dom.payments.request.supportedregions preference (needs to be set to a comma-delineated list of one or more 2-character iso country codes indicating the countries in which to support payments (for example, us,ca.).
...And 25 more matches

Setting Up a Development Environment - Archive of obsolete content
it's based on the mozilla xulrunner platform, so it has support for some of the particularities in firefox extension development.
...it has an add-on system similar to the one in firefox, and there are some komodo extensions that provide additional help in extension development.
...we chose make because this is the same system used by mozilla to build firefox, and it is available for all operating systems.
...And 24 more matches

nsINavBookmarksService
1.0 67 introduced gecko 1.8 inherits from: nsisupports last changed in gecko 14.0 (firefox 14.0 / thunderbird 14.0 / seamonkey 2.11) implemented by: @mozilla.org/browser/nav-bookmarks-service;1.
... beginupdatebatch() obsolete since gecko 1.9 (firefox 3) causes observers to be notified of a beginupdatebatch when a lot of things are about to change.
... obsolete since gecko 13.0 (firefox 13.0 / thunderbird 13.0 / seamonkey 2.10)this feature is obsolete.
...And 24 more matches

Event reference
mozbrowseractivitydone firefox os browser api-specific sent when some activity has been completed (complete description tbd.) mozbrowserasyncscroll firefox os browser api-specific sent when the scroll position within a browser <iframe> changes.
... mozbrowseraudioplaybackchange firefox os browser api-specific sent when audio starts or stops playing within the browser <iframe> content.
... mozbrowsercaretstatechanged firefox os browser api-specific sent when the text selected inside the browser <iframe> content changes.
...And 24 more matches

cfx - Archive of obsolete content
cfx is no longer supported as of firefox 44 and no longer accepted for add-on submission.
...cfx is is no longer supported as of firefox 44 and no longer accepted for add-on submission, jpm should now be used instead.
... cfx run launch an instance of firefox with your add-on installed.
...And 23 more matches

IDBDatabase - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetidbdatabasechrome full support 24 full support 24 no support 23 — 57prefixed prefixed implemented with the vendor prefix: webkitedge full su...
...pport 12firefox full support 16 full support 16 no support 10 — 16prefixed prefixed implemented with the vendor prefix: mozie partial support 10opera full support 15safari full support 7webview android full support yes full support yes no support ?
... — 57prefixed prefixed implemented with the vendor prefix: webkitchrome android full support 25 full support 25 no support 25 — 57prefixed prefixed implemented with the vendor prefix: webkitfirefox android full support 22opera android full support 14safari ios full support 8samsung internet android full support 1.5 full support 1.5 no support 1.5 — 7.0prefixed prefixed implemented with the vendor prefix: webkitabort eventchrome ...
...And 23 more matches

IDBIndex - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetidbindexchrome full support 24 full support 24 no support 23 — 57prefixed prefixed implemented with the vendor prefix: webkitedge full suppo...
...rt 12firefox full support 16 full support 16 no support 10 — 16prefixed prefixed implemented with the vendor prefix: mozie partial support 10opera full support 15safari full support 7webview android full support yes full support yes no support ?
... — 57prefixed prefixed implemented with the vendor prefix: webkitchrome android full support 25 full support 25 no support 25 — 57prefixed prefixed implemented with the vendor prefix: webkitfirefox android full support 22opera android full support 14safari ios full support 8samsung internet android full support 1.5 full support 1.5 no support 1.5 — 7.0prefixed prefixed implemented with the vendor prefix: webkitcountchrome ...
...And 23 more matches

IDBTransaction - Web APIs
firefox durability guarantees note that as of firefox 40, indexeddb transactions have relaxed durability guarantees to increase performance (see bug 1112702.) previously in a readwrite transaction idbtransaction.oncomplete was fired only when all data was guaranteed to have been flushed to disk.
... in firefox 40+ the complete event is fired after the os has been told to write the data but potentially before that data has actually been flushed to disk.
... desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetidbtransactionchrome full support 24 full support 24 no support 23 — 57prefixed prefixed implemented with the vendor prefix: webkitedge full...
...And 23 more matches

HTTP logging
note: the web console also offers the ability to peek at http transactions within firefox.
... using about:networking this is available starting with firefox 52.
... this is because firefox now uses multiple processes, and each process gets its own log file.
...And 22 more matches

Release notes - Archive of obsolete content
firefox 35 highlights added access keys for context menu.
... details github commits made between firefox 34 and firefox 35.
... bugs fixed between firefox 34 and firefox 35.
...And 21 more matches

How to convert an overlay extension to restartless - Archive of obsolete content
next, what's the minimum version of firefox we should require (preferably an esr)?
... this guide targets firefox 17 esr or later (or anything else gecko 17+, such as seamonkey 2.14+).
...using the current firefox esr, stable version, or nightly is generally a better idea if given the option, but some users take forever to upgrade.
...And 21 more matches

Storage access policy: Block cookies from trackers
firefox includes a new storage access policy that blocks cookies and other site data from third-party tracking resources.
... this policy is designed as an alternative to the older cookie policies, which have been available in firefox for many years.
... testing in firefox this cookie policy has been available in firefox since version 63.
...And 21 more matches

Signing an XPI - Archive of obsolete content
for an extension to work in firefox it must be signed by mozilla, not by yourself.
... introduction this article describes how to sign your own firefox extensions with a code-signing certificate on a windows platform.
...temporarily install the test certificate authority into your mozilla browser rename the x509.cacert file generated earlier to x509.cert import it into mozilla firefox as a software developer certificate authority.
...And 20 more matches

imgIContainer
66 introduced gecko 1.0 inherits from: nsisupports last changed in gecko 14.0 (firefox 14.0 / thunderbird 14.0 / seamonkey 2.11) implemented by: ?????????????????????????????????????.
... obsolete since gecko 2.0 methods native code only!addrestoredata obsolete since gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1)this feature is obsolete.
...void addrestoredata( [array, size_is(acount), const] in char data, in unsigned long acount ); parameters data missing description acount missing description exceptions thrown missing exception missing description native code only!appendframe obsolete since gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1)this feature is obsolete.
...And 20 more matches

mix-blend-mode - CSS: Cascading Style Sheets
ifference | exclusion | hue | saturation | color | luminosity examples effect of different mix-blend-mode values <div class="grid"> <div class="col"> <div class="note">blending in isolation (no blending with the background)</div> <div class="row isolate"> <div class="cell"> normal <div class="container normal"> <div class="group"> <div class="item firefox"></div> <svg viewbox="0 0 150 150"> <defs> <lineargradient id="red"> <stop offset="0" stop-color="hsl(0,100%,50%)" /> <stop offset="100%" stop-color="hsl(0,0%,100%)" /> </lineargradient> <lineargradient id="green"> <stop offset="0" stop-color="hsl(120,100%,50%)" />...
..."75" cy="75" rx="25" ry="70"></ellipse> <ellipse class="item g" cx="75" cy="75" rx="25" ry="70"></ellipse> <ellipse class="item b" cx="75" cy="75" rx="25" ry="70"></ellipse> </svg> </div> </div> </div> <div class="cell"> multiply <div class="container multiply"> <div class="group"> <div class="item firefox"></div> <svg viewbox="0 0 150 150"> <ellipse class="item r" cx="75" cy="75" rx="25" ry="70"></ellipse> <ellipse class="item g" cx="75" cy="75" rx="25" ry="70"></ellipse> <ellipse class="item b" cx="75" cy="75" rx="25" ry="70"></ellipse> </svg> </div> </div> </div> <div class="cell"> darken <div...
... class="container darken"> <div class="group"> <div class="item firefox"></div> <svg viewbox="0 0 150 150"> <ellipse class="item r" cx="75" cy="75" rx="25" ry="70"></ellipse> <ellipse class="item g" cx="75" cy="75" rx="25" ry="70"></ellipse> <ellipse class="item b" cx="75" cy="75" rx="25" ry="70"></ellipse> </svg> </div> </div> </div> <div class="cell"> screen <div class="container screen"> <div class="group"> <div class="item firefox"></div> <svg viewbox="0 0 150 150"> <ellipse class="item r" cx="75" cy="75" rx="25" ry="70"></ellipse> <ellipse class="item g" cx="75" cy="75" rx="25" ry="70"></ellipse> ...
...And 20 more matches

<textarea> - HTML: Hypertext Markup Language
autocapitalize this is a non-standard attribute supported by webkit on ios (therefore nearly all browsers running on ios, including safari, firefox, and chrome), which controls whether and how the text value should be automatically capitalized as it is entered/edited by the user.
... note: in browsers other than firefox, such as chrome, the disabled textarea content may be selectable and copyable.
... desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internettextareachrome full support yesedge full support 12firefox full support yesnotes full support ...
...And 20 more matches

MCD, Mission Control Desktop, AKA AutoConfig - Archive of obsolete content
abstract this document is a concrete example of a centralized auto-configuration of mozilla apps, that are; firefox, thunderbird, mozilla suite 1.x.x, seamonkey and for the record, old netscape 4.x.
... its original inspiration comes from http://www.alain.knaff.lu/howto/mozillacustomization/ and http://mit.edu/~firefox/www/maintain...utoconfig.html.
... file location (not tested since 2012 ...) in thunderbird , firefox, the javascript preference file that calls the centralized preference file is located in $install_dir_moz_app/defaults/pref, for example in thunderbird this would be repectively for windows/linux: c:\program files\mozilla thunderbird\defaults\pref /usr/lib/thunderbird/default/pref ( it used to be in /usr/lib/thunderbird-version#/default/pref as in /usr/lib/thunderbird-5/default/pref ) for the...
...And 19 more matches

Adding Toolbars and Toolbar Buttons - Archive of obsolete content
« previousnext » adding a new toolbar adding new toolbars to firefox is easy, but adding them the wrong way is very easy as well.
... toolbars in firefox are very customizable.
...firefox allows all of this by default, and if you don't pay attention to the details we describe here, your toolbar may not be as easy to customize as the rest.
...And 18 more matches

Creating a Microsummary - Archive of obsolete content
warning: microsummary support was removed in gecko 6.0 (firefox 6.0 / thunderbird 6.0 / seamonkey 2.3) a microsummary generator is a set of instructions for creating a microsummary from the content of a page.
... in this tutorial we're going to create a microsummary generator for the spread firefox home page that displays the current firefox download count along with the label fx downloads; for example: 174475447 fx downloads.
...then just link to the microsummaries from within the pages themselves using a <link rel="microsummary"> element, f.e.: <head> <link rel="microsummary" href="index.php?view=microsummary"> </head> when firefox encounters a <link rel="microsummary"> element, it loads the url in the href attribute.
...And 18 more matches

Index - Archive of obsolete content
found 1218 pages: # page tags and summary 1 xul landing, mozilla, xul xul (xml user interface language) is mozilla's xml-based language for building user interfaces of applications like firefox.
... 436 index found 1218 pages: 437 international characters in xul javascript firefox, gecko, guide, internationalization, javascript, mozilla, xpcom, xul gecko 1.8, as used in firefox 1.5 and other applications, added support for non-ascii characters in javascript files loaded from xul files.
... 599 extensions xul, xul popup guide the main menu bar in firefox has the id 'main-menubar'.
...And 18 more matches

Application Translation with Mercurial
gaia-* denotes branches of firefox os, the operating system for mobile devices.
... firefox and fx-* denote branches of firefox for desktop, the browser for desktops and notebooks running, windows, mac os or linux.
... fennec and fennec-* denote branches of firefox for mobile, the firefox browser for the android operating system.
...And 18 more matches

BluetoothCharacteristicProperties - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbluetoothcharacteristicproperties experimentalchrome full support 56notes full support 56notes notes chromeos and macos only.
... full support ≤79notes notes windows 10.firefox no support noie no support noopera full support yessafari no support nowebview android no support nochrome android full support 5...
...6firefox android no support noopera android full support yessafari ios no support nosamsung internet android full support 6.0authenticatedsignedwrites experimentalchrome full support 56notes full support 56notes notes chromeos and macos only.
...And 18 more matches

WebAssembly - JavaScript
desktopmobileserverchromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetnode.jswebassemblychrome full support 57edge full support 16firefox full support 52notes full support ...
... 52notes notes disabled in the firefox 52 extended support release (esr).ie no support noopera full support 44safari full support 11webview android full support 57chrome android full support 57firefox android full support 52notes full support 52notes notes disabled in the firefox 52 extended support release (esr).opera android full support 43safari ios full support 11samsung internet androi...
...d full support 7.0nodejs full support 8.0.0compileerrorchrome full support 57edge full support 16firefox full support 52notes full support 52notes notes disabled in the firefox 52 extended support release (esr).ie no support noopera full support 44safari full support 11webview android full support 57chrome android full support ...
...And 18 more matches

Media container formats (file types) - Web media technologies
codec name (short) full codec name browser compatibility1 3gp third generation partnership firefox for android adts audio data transport stream firefox2 flac free lossless audio codec chrome 56, edge 16, firefox 51, safari 11 mpeg / mpeg-2 moving picture experts group (1 and 2) — mpeg-4 (mp4) moving picture experts group 4 chrome 3, edge 12, firefox, internet explorer 9, opera 24, safari 3.1 ogg ogg chrome 3, firefox ...
...3.5, edge 173 (desktop only), internet explorer 9, opera 10.50 quicktime (mov) apple quicktime movie only older versions of safari, plus other browsers that supported apple's quicktime plugin webm web media chrome 6, edge 173 (desktop only), firefox 4, opera 10.6, safari (webrtc only) [1] unless otherwise specified, both mobile and desktop browser compatibility is implied if a browser is listed here.
... video codecs supported by 3gp codec browser support chrome edge firefox safari avc (h.264) yes1,2 h.263 yes1 mpeg-4 part 2 (mp4v-es) yes1 vp8 yes1 [1] firefox only supports 3gp on openmax-based devices, which currently means the boot to gecko (b2g) platform.
...And 18 more matches

WebAssembly
desktopmobileserverchromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetnode.jswebassemblychrome full support 57edge full support 16firefox full support 52notes full support ...
... 52notes notes disabled in the firefox 52 extended support release (esr).ie no support noopera full support 44safari full support 11webview android full support 57chrome android full support 57firefox android full support 52notes full support 52notes notes disabled in the firefox 52 extended support release (esr).opera android full support 43safari ios full support 11samsung internet androi...
...d full support 7.0nodejs full support 8.0.0compileerrorchrome full support 57edge full support 16firefox full support 52notes full support 52notes notes disabled in the firefox 52 extended support release (esr).ie no support noopera full support 44safari full support 11webview android full support 57chrome android full support ...
...And 18 more matches

Index - MDN Web Docs Glossary: Definitions of Web-related terms
37 boot2gecko boot2gecko, firefox os, glossary, infrastructure, intro boot2gecko (b2g) is the engineering codename for firefox os and refers to builds that haven't yet received official firefox os branding.
... (firefox os was also often called boot2gecko before the project had an official name.) 38 bootstrap bootstrap, css, glossary, intro, framework bootstrap is a free, open source html, css, and javascript framework for quickly building responsive websites.
... 69 certified apps, b2g, firefox os, glossary, security, trustworthy certified means that an application, content or data transmission has successfully undergone evaluation by professionals with expertise in the relevant field, thereby indicating completeness, security and trustworthiness.
...And 17 more matches

Web audio codec guide - Web media technologies
for example, firefox only supports aac if support is provided by the operating system or an external library.
...ound 96 kbps at 48 khz sample rate compression lossy maximum audio channels 48 (plus 16 low frequency enhancement channels) audio frequency bandwidth 0 hz - 96 khz (standard audio channels) 0 hz - 120 hz (lfe channels) latency 20 ms to 405 ms browser compatibility feature chrome edge firefox internet explorer opera safari aac support yes[2] yes yes[1] 9 yes 3.1 container support mp4, adts, 3gp rtp / webrtc compatible yes licensing for streaming or distributing aac-encoded content: no license required; developers of codecs are required to obtain...
... a patent license through via licensing [1] due to patent issues, firefox does not directly support aac.
...And 17 more matches

Handling Preferences - Archive of obsolete content
« previousnext » preferences in firefox mozilla applications are highly customizable.
...to open the preferences window in firefox, select the following from the main menu: on windows, tools > options on mac, firefox > preferences on linux, edit > preferences note: keep in mind the usage of the terms "preferences" and "options" in different platforms.
...tip: you can use window.navigator.platform in your chrome code to figure out the operating system firefox is running on.
...And 16 more matches

Creating a status bar extension - Archive of obsolete content
next » this is the first in a series of articles that will demonstrate how to create increasingly intricate extensions for the firefox browser.
... note: the extension created by this tutorial won't work in firefox that don't have a static status bar (that is, firefox 4 and up).
...many of the concepts introduced here apply to any xul-based application; however, to keep from getting completely overwhelmed, we're going to focus specifically on firefox.
...And 16 more matches

Complete - Archive of obsolete content
this page is for readers who have followed the custom toolbar button tutorial for firefox, thunderbird and sunbird, or the custom toolbar button:seamonkey tutorial for seamonkey, and who want to learn more about developing extensions.
...it supports firefox, thunderbird, sunbird and flock—these are referred to as "firefox etc." in the rest of this page.
...the xpi contains: install.rdf information about the extension chrome.manifest registration data for firefox etc.
...And 16 more matches

JavaScript modules - JavaScript
browser support use of native javascript modules is dependent on the import and export statements; these are supported in browsers as follows: import desktopmobileserverchromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetnode.jsimportchrome full support 61edge full support 16 full support 16 full support 15disable...
...d disabled from version 15: this feature is behind the experimental javascript features preference.firefox full support 60 full support 60 no support 54 — 60disabled disabled from version 54 until version 60 (exclusive): this feature is behind the dom.modulescripts.enabled preference.
... to change preferences in firefox, visit about:config.ie no support noopera full support 48safari full support 10.1webview android full support 61chrome android full support 61firefox android full support 60 full support 60 no support 54 — 60disabled disabled from version 54 until version 60 (exclusive): this feature is behind the dom.modulescripts.enabled preference.
...And 16 more matches

Chapter 4: Using XPCOM—Implementing advanced processes - Archive of obsolete content
and was originally published in japanese for the firefox developers conference summer 2007.
...shimoda is a co-author of firefox 3 hacks (o'reilly japan, 2008).
...internet explorer handles this using activex; in firefox, we use the cross-platform component object model, or xpcom.
...And 15 more matches

Introduction - Archive of obsolete content
this tutorial is meant to be the stepping stone that will turn you into a professional firefox extension developer in no time.
... xul school was created by appcoast (formerly glaxstar), one of the few companies dedicated to building high-quality firefox extensions.
... a team of over a dozen xul developers conformed glaxstar at the time this tutorial was created, and the combined experiences of years creating firefox extensions are reflected here.
...And 15 more matches

Mozilla Quirks Mode Behavior
removed in firefox 50 (bug 648331).
...this behavior is being removed in firefox 27, for interoperability.
... obsolete since gecko 35 (firefox 35.0 / thunderbird 35.0 / seamonkey 2.32) (bug 95530) this quirk is now html5 conform and has been adopted in standards mode.
...And 15 more matches

Profile Manager
firefox and other xulrunner applications store user settings and data in special folders, called profiles.
... firefox provides a built-in applet to manage these profiles, but it will eventually be going away (see bug 214675), so a new standalone profile manager application has been created, which works with any xulrunner application, and has many features not found in firefox's built-in version.
... system requirements: mac: an intel processor, i386 or x86_64 linux: any version capable of running firefox 4.0 windows: xp or later source code you can download the source as well: hg clone http://hg.mozilla.org/automation/profilemanager/ instructions for building can be found in build.txt.
...And 15 more matches

Index of archived content - Archive of obsolete content
ing content scripts reddit example port self contributor's guide classes and inheritance content processes getting started modules private properties firefox compatibility module structure of the sdk porting the library detector program id sdk api lifecycle sdk and xul comparison testing the add-on sdk two types of scripts working with events xul migration guide high-level ap...
... release notes tools cfx cfx to jpm console jpm jpm-mobile jpmignore package.json tutorials add a context menu item add a menu item to firefox adding a button to the toolbar annotator creating annotations displaying annotations implementing the widget overview storing annotations chrome authority creating event targets creating...
... reusable modules developing for firefox mobile display a popup getting started (jpm) getting started (cfx) list open tabs listen for page load listening for load and unload localization logging modifying web pages based on url modifying the page hosted by a tab open a web page troubleshooting unit testing using xpcom without chrome using third-party modules (jpm) bootstrapped extensions code snippets alerts and notifications autocomplete bookmarks ...
...And 14 more matches

TPS Tests
tps consists of a firefox extension of the same name, along with a python test runner, both of which live inside mozilla-central.
... the python test runner will read a test file (in javascript format), setup one or more firefox profiles with the necessary extensions and preferences, then launch firefox and pass the test file to the extension.
... set up an environment and run a test to run tps, you should create a new firefox account using a restmail.net email address (strictly speaking, restmail isn't required, but it will allow tps to automatically do account confirmation steps for you.
...And 14 more matches

Window.open() - Web APIs
on firefox and chrome (at least), this only works from the same parent, ie.
...firefox (50.0.1) functions as described: from the same domain+port reopen with same name will access the previously created window.
...firefox (51.) gets the handle but cannot run any element.focus() while chrome can run focus() from opener to child but not between siblings nor, reverse, from child to opener.
...And 14 more matches

@font-feature-values - CSS: Cascading Style Sheets
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internet@font-feature-valueschrome no support noedge no support nofirefox full support 34 full support ...
...to change preferences in firefox, visit about:config.ie no support noopera no support nosafari full support 9.1webview android no support nochrome android no support nofirefox android full support 34 full support 34 full support 24disabled disabled f...
...to change preferences in firefox, visit about:config.opera android no support nosafari ios full support 9.3samsung internet android no support no@annotationchrome no support noedge no support nofirefox full support 34 full support 34 full support 24disabled disabled from version 24: this feature is behind the layout.css.font-featur...
...And 14 more matches

ui/button/action - Archive of obsolete content
experimental add a button to the firefox user interface.
... usage creating buttons to create a button you must give it an id, an icon, and a label: var { actionbutton } = require("sdk/ui/button/action"); var button = actionbutton({ id: "my-button", label: "my button", icon: { "16": "./firefox-16.png", "32": "./firefox-32.png" }, onclick: function(state) { console.log("button '" + state.label + "' was clicked"); } }); by default, the button appears in the firefox toolbar: however, users can move it to the firefox menu panel using the toolbar customization feature: badged buttons new in firefox 36.
... if you specify multiple icons, firefox will select the best-fitting icon based on the device screen resolution and the place the icon appears.
...And 13 more matches

ui/button/toggle - Archive of obsolete content
experimental add a toggle button to the firefox user interface.
... usage creating buttons to create a button you must give it an id, an icon, and a label: var { togglebutton } = require("sdk/ui/button/toggle"); var button = togglebutton({ id: "my-button", label: "my button", icon: { "16": "./firefox-16.png", "32": "./firefox-32.png" }, onchange: function(state) { console.log(state.label + " checked state: " + state.checked); } }); by default, the button appears in the firefox toolbar: however, users can move it to the firefox menu panel: badged buttons new in firefox 36.
... if you specify multiple icons, firefox will select the best-fitting icon based on the device screen resolution and the place the icon appears.
...And 13 more matches

Chapter 1: Introduction to Extensions - Archive of obsolete content
this document was authored by hideyuki emura and was originally published in japanese for the firefox developers conference summer 2007.
... emura-san is a co-author of firefox 3 hacks (o'reilly japan, 2008.) introduction if you're reading this guide, you’ve probably used firefox before.
... perhaps the first time you looked at firefox, you may have been surprised to see that it has a much simpler structure than other full-featured browsers, such as opera or safari.
...And 13 more matches

Index
found 172 pages: # page tags and summary 1 firefox firefox, landing, mozilla here you can learn about how to contribute to the firefox project and you will also find links to information about the construction of firefox add-ons, using the developer tools in firefox, and other topics.
... 3 building firefox with rust code build documentation, gecko, build, rust in may 2015 the rust programming language reached its 1.0 stability milestone, and various experiments with writing parts of gecko in rust began.
... rust code first shipped in august 2016 with the release of firefox 48.
...And 13 more matches

IDBKeyRange - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetidbkeyrangechrome full support 24 full support 24 no support 23 — 57prefixed prefixed implemented with the vendor prefix: webkitedge full su...
...pport 12firefox full support 16 full support 16 no support 10 — 16prefixed prefixed implemented with the vendor prefix: mozie partial support 10opera full support 15safari full support 7webview android full support yeschrome android full support yesfirefox android full support 22opera android full support 14safari ios full support ...
... 8samsung internet android full support yesboundchrome full support 24 full support 24 no support 23 — 24prefixed prefixed implemented with the vendor prefix: webkitedge full support 12firefox full support 16 full support 16 no support 10 — 16prefixed prefixed implemented with the vendor prefix: mozie partial support 10opera full support 15safari full support ...
...And 13 more matches

PasswordCredential - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetpasswordcredential experimentalchrome full support 51edge full support ≤79firefox ?
... webview android full support 51chrome android full support 51firefox android ?
... samsung internet android full support 5.0passwordcredential() constructor non-standardchrome full support 51edge full support ≤79firefox ?
...And 13 more matches

Web video codec guide - Web media technologies
it's worth noting, however, that at least for firefox and chrome, the levels are actually ignored at this time when performing software decoding, and the decoder just does the best it can to play the video given the settings provided.
...le) or 4:2:0 high 8 or 10 4:0:0 (greyscale), 4:2:0, or 4:4:4 professional 8, 10, or 12 4:0:0 (greyscale), 4:2:0, 4:2:2, or 4:4:4 hdr support yes variable frame rate (vfr) support yes browser compatibility feature chrome edge firefox internet explorer opera safari av1 support 70 75 67 no 57 no container support isobmff[1], mpeg-ts, mp4, webm rtp / webrtc compatible yes supporting/maintaining organization alliance for open media specification https://aomediacodec.github.io/av...
...eyscale), 4:2:0, and 4:2:2 high 4:4:4 predictive 8 to 14 4:0:0 (greyscale), 4:2:0, 4:2:2, and 4:4:4 hdr support yes; hybrid log-gamma or advanced hdr/sl-hdr; both are part of atsc variable frame rate (vfr) support yes browser compatibility feature chrome edge firefox internet explorer opera safari avc/h.264 support 4 12 35[1] 9 25 3.2 container support 3gp, mp4, webm rtp / webrtc compatible yes supporting/maintaining organization mpeg / itu specification https://mpeg.chiariglione.org/standards/mpeg-4/advance...
...And 13 more matches

OpenSearch description format
opensearch is supported by (at least) firefox, edge, internet explorer, safari, and chrome.
... (see reference material for links to other browsers' documentation.) firefox also supports additional features not in the opensearch standard, such as search suggestions and the <searchform> element.
... this article focuses on creating opensearch-compatible search plugins that support these additional firefox features.
...And 13 more matches

Deploying a Plugin as an Extension - Archive of obsolete content
one of the new features available in firefox 1.5 is the ability to place browser plugins in a firefox extension.
... this feature is particularly useful for vendors who wish to deploy the plugin even if firefox is not currently installed, or who want to use the automatic extension update mechanism to update their plugin to a newer version.
...when this method is used, you can choose to either place the plugin into the plugins directory, or, on windows, place it into your own directory and modify the windows registry to let firefox know where to find the plugin.
...And 12 more matches

Obsolete Build Caveats and Tips
these tips, while helpful, are jarring and superfluous to the majority of new mozilla builders who are mainly interested in building the latest version of firefox.
... obsolete caveats and tips from simple_firefox_build install a version of visual studio that supports c++ development: vs 2012 for windows desktop pro or express (free), or vc++ 2010 pro or express (free), or vc++ 2008 pro or express with sp1 (free) (warning !
... from firefox 10, the compilator is visual studio 2010; if you want to use it, you must use a previous version of it !), or 2005 professional from build_instructions those who need to work with the code for firefox 3/mozilla 1.9 and earlier can check out the latest source using cvs.
...And 12 more matches

How to get a stacktrace with WinDbg
(to get a stacktrace for thunderbird or some other product, substitute the product name where ever you see firefox in this instructions.) requirements to get such a stacktrace you need to install the following software: debugging tools for windows microsoft distributes the debugging tools for windows for free, those include windbg which you will need here.
... a firefox nightly or release you need a firefox version for which symbols are availables from the mozilla symbol server to use with windbg.
... you can use any official nightly build or released version of firefox from mozilla.
...And 12 more matches

FileSystemEntry - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfilesystementry experimentalchrome full support 8alternate name full support 8alternate name alternate name uses the non-standard name: entryedge full support ...
... 79prefixed full support 79prefixed prefixed implemented with the vendor prefix: webkitfirefox full support 50ie no support noopera no support nosafari full support 11.1webview android full support ≤37alternate name full support ≤37alternate name alternate name uses the non-standard name: entrychrome android full support 18alternate name full support 18alternate name alter...
...nate name uses the non-standard name: entryfirefox android full support 50opera android no support nosafari ios full support 11.3samsung internet android full support yesprefixed full support yesprefixed prefixed implemented with the vendor prefix: webkitcopyto experimentaldeprecatednon-standardchrome full support 8edge full support 79firefox no support noie no support noopera no su...
...And 12 more matches

Proxy Auto-Configuration (PAC) file - HTTP
in chrome (versions 52 to 73), you can disable this by setting pachttpsurlstrippingenabled to false in policy or by launching with the --unsafe-pac-url command-line flag (in chrome 74, only the flag works, and from 75 onward, there is no way to disable path-stripping; as of chrome 81, path-stripping does not apply to http urls, but there is interest in changing this behavior to match https); in firefox, the preference is network.proxy.autoconfig_url.include_path.
... the javascript function returns a single string if the string is null, no proxies should be used the string can contain any number of the following building blocks, separated by a semicolon: direct connections should be made directly, without any proxies proxy host:port the specified proxy should be used socks host:port the specified socks server should be used recent versions of firefox support as well: http host:port the specified proxy should be used https host:port the specified https proxy should be used socks4 host:port socks5 host:port the specified socks server (with the specified sock version) should be used if there are multiple semicolon-separated settings, the left-most setting will be used, until firefox fails to establish the connection to the proxy.
... example convert_addr("104.16.41.2"); // returns the decimal number 1745889538 myipaddress() syntax myipaddress() parameters (none) returns the server ip address of the machine firefox is running on, as a string in the dot-separated integer format.
...And 12 more matches

ui/sidebar - Archive of obsolete content
from firefox 33 onwards you can pass a browserwindow into these methods, and they will then operate on the specified window.
... alternatively, the view->sidebar submenu in firefox will contain a new item which the user can use to show or hide the sidebar: the sidebar generates a show event when it is shown and a hide event when it is hidden.
...unlike modules such as panel, the content must be local, typically loaded from the add-on's data directory via a url constructed using self.data.url(): var sidebar = require("sdk/ui/sidebar").sidebar({ id: 'my-sidebar', title: 'my sidebar', url: require("sdk/self").data.url("sidebar.html") }); from firefox 34, you can use "./sidebar.html" as an alias for self.data.url("sidebar.html").
...And 11 more matches

Enhanced Extension Installation - Archive of obsolete content
background there are several flaws with extension1 installation in firefox2 1.0, including: it is very difficult for a third party application with its own managed install process to install an extension into firefox.
... first it must locate the firefox executable, then run it with the -install-global-extension command line flag, which installs from a xpi into the firefox application directory.
... aside from the work of locating the firefox executable in the first place (which varies from platform to platform), this is very limiting because: it forces the third party application to package its firefox integration hooks as a xpi.
...And 11 more matches

List of Mozilla-Based Applications - Archive of obsolete content
oder geocoding & data on a map amarok xul remote remote control for amarok music player ample sdk javascript gui-framework aol instant messenger im client uses nss apache web server doesn't use nss by default, but can be configured to use nss with mod_nss ssl module apicawatch site performance monitoring tool uses firefox as part of its monitoring package astyle css editor editing tool atmail webmail client aviva for java mainframe connectivity product uses mozilla rhino babelgum internet tv service basilisk pre-servo xul-based web browser uses most of the firefox 55 source code batik java-based toolkit uses mozilla rhino ...
... bitbox security focused browser seemingly based on firefox blackbird browser for african american community bluegriffon wysiwyg editor next generation version of composer buzzbird twitter client built on xulrunner camino browser 2.5m downloads and ~400,000 active users ...
...unner) chromium and google chrome web browser uses mozilla nss and npapi libraries chromeless browser with html-based interface classilla mozilla browser for mac os 9 clines a clone of color lines (game) standalone version cloud web operating system cloud browse iphone/ipad/ipod touch browser seems to be firefox running remotely on servers that people access through device conkeror keyboard-oriented browser convertigo enterprise mashup server server tool for transactional web scraping and for web clipping cometbird another firefox mod modified version of firefox correo email couac (fr) web-based email and jabber app c...
...And 11 more matches

Archived Mozilla and build documentation - Archive of obsolete content
chromeless [this project may not be active — check github https://github.com/mozilla/chromeless] creating a firefox sidebar extension this article describes how to create a registered sidebar for firefox 2 or greater.
... creating a skin for firefox/getting started download the latest version of firefox and install it.
... download manager improvements in firefox 3 firefox 3 offers improvements to the download manager that allow multiple progress listeners, use of the storage api for data management, download resuming, and more.
...And 11 more matches

Extentsions FAQ - Archive of obsolete content
option #3 install status buttons 1.0 <https://addons.mozilla.org/firefox/1272/> "lets you put toolbar buttons at either end of the status-bar.
... friday, september 29 - october 6, 2006 (↑ top) is there anyway, via plugin or extension, for firefox to mimic the functionality of ie in this respect?
... the ietab (opens ie in a firefox tab) should be able do this if you set it to always open "file://*" urls in an ie tab.
...And 11 more matches

Strategies for carrying out testing - Learn web development
for example, if you live in western europe or north america, you will know that a lot of people use windows and mac desktops/laptops, where the main browsers are chrome, firefox, safari, ie, and edge.
... lots of people use ios and android, so you probably also want to test the latest versions of ios safari, the last couple of versions of the old android stock browser, and chrome and firefox for ios and android.
... this gives us the following support chart so far: a grade: chrome and firefox for windows/mac, safari for mac, edge and ie for windows (last two versions of each), ios safari for iphone/ipad, android stock browser (last two versions) on phone/tablet, chrome and firefox for android (last two versions) on phone tablet b grade: ie 9 for windows c grade: n/a if you live somewhere else, or are working on a site that will serve somewhere else (e.g.
...And 11 more matches

Limitations of chrome scripts
this page describes patterns that used to work in the chrome process that will no longer work in multiprocess firefox.
... these are the sorts of things that will break an old add-on in multiprocess firefox.
... the rest of this page documents patterns that don't work in multiprocess firefox as well as how are shims try to paper over the problem.
...And 11 more matches

Setting up an update server
the goal of this document is to provide instructions for installing a locally-served firefox update.
...for example, if you want the nightly mar from 2019-09-17 for a 64 bit windows machine, you probably want the mar located at https://archive.mozilla.org/pub/firefox/nightly/2019/09/2019-09-17-09-36-29-mozilla-central/firefox-71.0a1.en-us.win64.complete.mar.
...here is an example of an appropriate mar file to use: https://archive.mozilla.org/pub/firefox/releases/69.0b9/update/win64/firefox-69.0b9.complete.mar.
...And 11 more matches

nsIAppShellService
inherits from: nsisupports last changed in gecko 8.0 (firefox 8.0 / thunderbird 8.0 / seamonkey 2.5) implemented by: @mozilla.org/appshell/appshellservice;1 as a service: var appshellservice = components.classes["@mozilla.org/appshell/appshellservice;1"] .getservice(components.interfaces.nsiappshellservice); method overview void closetoplevelwindow(in nsixulwindow awindow); obsolete since gecko 1.8 void createhiddenwindow(in nsiappshell aappshell); native code only!
...obsolete since gecko 1.8 methods closetoplevelwindow() obsolete since gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) close a window.
... createstartupstate() obsolete since gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) creates the initial state of the application by launching tasks specfied by "general.startup.*" prefs.
...And 11 more matches

MSGestureEvent - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetmsgestureevent non-standardchrome no support noedge no support 12 — 79firefox no support noie full support 10op...
...era no support nosafari no support nowebview android no support nochrome android no support nofirefox android no support noopera android no support nosafari ios no support nosamsung internet android no support nomsgestureevent() constructor non-standardchrome no support noedge no support 12 — 79firefox no support noie ...
... full support 10opera no support nosafari no support nowebview android no support nochrome android no support nofirefox android no support noopera android no support nosafari ios no support nosamsung internet android no support noexpansion non-standardchrome no support noedge no support 12 — 79firefox no support ...
...And 11 more matches

min-width - CSS: Cascading Style Sheets
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetmin-widthchrome full support 1edge full support 12firefox full support 1notes full support 1n...
...firefox supports applying min-width to table elements.ie full support 7opera full support 4notes full support 4notes notes css 2.1 leaves the behavior of min-width with table undefined.
... opera supports applying min-width to table elements.safari full support 1webview android full support 4.4chrome android full support 18firefox android full support 4notes full support 4notes notes css 2.1 leaves the behavior of min-width with table undefined.
...And 11 more matches

Getting Started (jpm) - Archive of obsolete content
you can use jpm from firefox 38 onwards.
... prerequisites to create add-ons for firefox using the sdk, you'll need: firefox version 38 or later.
... if you need to work with earlier versions of firefox, you'll need to use the old cfx tool.
...And 10 more matches

Tabbed browser - Archive of obsolete content
here you should find a set of useful code snippets to help you work with firefox's tabbed browser.
...of course the entire application firefox is called "a browser".
... within the firefox browser are tabs and inside each tab is a browser, both in the common sense of a web page browser and the xul sense of a browser element.
...And 10 more matches

Microsummary XML grammar reference - Archive of obsolete content
warning: microsummary support was removed in gecko 6.0 (firefox 6.0 / thunderbird 6.0 / seamonkey 2.3) this article provides detailed information about the xml grammar used to build microsummary generators, describing each element and their attributes.
...example the microsummary generator created in the creating a microsummary tutorial: <?xml version="1.0" encoding="utf-8"?> <generator xmlns="http://www.mozilla.org/microsummaries/0.1" name="firefox download count"> <template> <transform xmlns="http://www.w3.org/1999/xsl/transform" version="1.0"> <output method="text"/> <template match="/"> <value-of select="id('download-count')"/> <text> fx downloads</text> </template> </transform> </template> <pages> <include>http://(www\.)?spreadfirefox\.com/(index\.php)?</include> </pages> </generator> namespace the namespace uri for microsummary generator xml documents is: http://www.mozilla.org/microsummaries/...
...only relevant for generators dynamically created by firefox code and extensions.
...And 10 more matches

Gecko info for Windows accessibility vendors
definitions here are some basic definitions that you'll need for this document to make sense: gecko: the rendering engine for firefox, thunderbird, nvu, mozilla seamonkey and other applications.
...however, exposing the entire dom to external software packages is quite involved, partially because changes to the dom in firefox must occur on the main thread.
... xul: extensible user-interface language the xml-based language used by firefox and mozilla to develop the ui.
...And 10 more matches

Chrome registration
firefox 2, thunderbird 2, and seamonkey 1.1 will not find the chrome when packagename is mixed case.
...firefox 3, thunderbird 3, and seamonkey 2 support mixed case.
...prior to firefox 4, files in the components directory were registered automatically.
...And 10 more matches

Creating a Language Pack
please consult the documentation on localized builds on firefox-source-docs.
... pre-build steps in the .mozconfig, you want to have mk_add_options moz_objdir=@topsrcdir@/obj-firefox-build ac_add_options --disable-compile-environment ac_add_options --with-l10n-base=../l10n-central # path relative to moz_objdir ac_add_options --enable-application=[browser or mail] the given path should have your localization directory as child (i.e., a subdirectory ab-cd where ab-cd is your locale code).
... you still need to specify which application you're localizing (e.g., for firefox, that's browser, thunderbird would be mail).
...And 10 more matches

Configuring Build Options
note: do not make substantive changes to this document without consulting benjamin smedberg <benjamin@smedbergs.us> or one of the build-config peersthis document details how to configure firefox builds.
... setting the mozconfig path: export mozconfig=$home/mozilla/mozconfig-firefox calling the file .mozconfig (with a leading dot) is also supported, but this is not recommended because it may make the file harder to find.
... building with an objdir this means that the source code and object files are not intermingled in your directory system and you can build multiple applications (e.g., firefox and thunderbird) from the same source tree.
...And 10 more matches

Troubleshooting XPCOM components registration
load failure of binary components on the mozilla trunk (firefox 3, xulrunner 1.9), components that fail to load will print an error to the error console.
...if the error appears, you can use nspr logging to see additional information about the failure by running firefox from a command prompt: rem close all firefox windows!
... set nspr_log_modules=nsnativemoduleloader:5 set nspr_log_file=c:\path\to\logfile "c:\program files\mozilla firefox\firefox.exe" examining this log for warning and errors may provide valuable clues why the component failed to load.
...And 10 more matches

BluetoothRemoteGATTDescriptor - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbluetoothremotegattdescriptor experimentalchrome full support 57notes full support 57notes notes macos only.
... full support ≤79notes notes windows 10.firefox no support noie no support noopera full support 44notes full support 44notes notes macos only.
... full support 57notes notes windows 10.safari no support nowebview android no support nochrome android full support 57firefox android no support noopera android full support 44safari ios no support nosamsung internet android full support 7.0characteristic experimentalchrome full support 57notes ...
...And 10 more matches

Guide to the Fullscreen API - Web APIs
when a fullscreen request fails, firefox will log an error message to the web console explaining why the request failed.
... prefixing note: currently, only firefox 64 and chrome 71 supports this unprefixed.
...here is the table summarizing the prefixes and name differences between them: standard webkit (safari) / blink (chrome & opera) / edge gecko (firefox) internet explorer document.fullscreen webkitisfullscreen mozfullscreen - document.fullscreenenabled webkitfullscreenenabled mozfullscreenenabled msfullscreenenabled documentorshadowroot.fullscreenelement webkitfullscreenelement mozfullscreenelement msfullscreenelement document.onfullscreenchange onwebkitfullscreenchange onmozfullscreenchange onmsfullscreenchange document.onfullscreenerror ...
...And 10 more matches

URLUtilsReadOnly - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung interneturlutilsreadonlychrome no support noedge no support nofirefox full support 57 full support 57 ...
... no support 3.5 — 57notes notes firefox has a bug whereby single quotes contained in urls are escaped when accessed via url apis (see bug 1386683).ie no support noopera no support nosafari no support nowebview android no support nochrome android no support nofirefox android full support 57 full support 57 no support 4 — 57notes notes firefox has a bug whereby single quotes contained in urls are escaped when accessed via url apis (see...
... bug 1386683).opera android no support nosafari ios no support nosamsung internet android no support nohash experimentalchrome no support noedge no support nofirefox full support 38 full support 38 no support 3.5 — 38notes notes before firefox 38, firefox returned the hash percent encoded.
...And 10 more matches

Getting started (cfx) - Archive of obsolete content
use cfx only if you need to work with firefox 38 or earlier.
... see: getting started with jpm cfx to jpm prerequisites to create add-ons for firefox using the sdk, you'll first need to follow the instructions to install and activate the sdk.
... next, save these three icon files to the "data" directory: icon-16.png icon-32.png icon-64.png back at the command prompt, type: cfx run this is the sdk command to run a new instance of firefox with your add-on installed.
...And 9 more matches

tabbrowser - Archive of obsolete content
note: starting in firefox 3 (xulrunner/gecko 1.9), this is only used in the main firefox window and cannot be used in other xul windows by third-party applications or extensions.
... onbookmarkgroup not in firefox type: script code this code executes when the user chooses the "bookmark this group of tabs" command.
... onnewtab not in firefox type: script code this script will be called when the new tab button is clicked.
...And 9 more matches

Debugging on Mac OS X
this document explains how to debug mozilla-derived applications such as firefox, thunderbird, and seamonkey on macos using xcode.
...see building firefox for macos if you need help creating your own build.
... debugging firefox on macos 10.14+ macos 10.14 introduced notarization and hardened runtime features for improved application security.
...And 9 more matches

DMD
dmd (short for "dark matter detector") is a heap profiler within firefox.
...it helps us reduce the "heap-unclassified" value in firefox's about:memory page, and also detects if any heap blocks are reported twice.
... building and running nightly firefox the easiest way to use dmd is with the normal nightly firefox build, which has dmd already enabled in the build.
...And 9 more matches

Creating a Cookie Log
creating a cookie log is often necessary to troubleshoot problems with firefox's cookie handling.
...please follow the instructions below to run firefox with cookie logging enabled.
... change to your firefox directory (usually c:\program files\mozilla firefox) type "set nspr_log_file=c:\temp\cookie-log.txt", enter type "set nspr_log_modules=cookie:4" and press enter run firefox by typing "firefox.exe" and pressing enter.
...And 9 more matches

ByteLengthQueuingStrategy - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbytelengthqueuingstrategy experimentalchrome full support 59edge full support 16firefox full support 57disabled full suppo...
...to change preferences in firefox, visit about:config.ie no support noopera full support 46safari ?
... webview android full support 59chrome android full support 59firefox android full support 57disabled full support 57disabled disabled from version 57: this feature is behind the dom.streams.enabled preference (needs to be set to true) and the javascript.options.streams preference (needs to be set to true).
...And 9 more matches

CountQueuingStrategy - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetcountqueuingstrategy experimentalchrome full support 59edge full support 16firefox full support 57disabled full support ...
...to change preferences in firefox, visit about:config.ie no support noopera full support 46safari ?
... webview android full support 59chrome android full support 59firefox android full support 57disabled full support 57disabled disabled from version 57: this feature is behind the dom.streams.enabled preference (needs to be set to true) and the javascript.options.streams preference (needs to be set to true).
...And 9 more matches

MediaMetadata - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetmediametadata experimentalchrome full support 57edge no support nofirefox full support 71ie no support ...
... webview android no support nochrome android full support 57firefox android ?
... samsung internet android full support 7.0mediametadata() constructor experimentalchrome full support 57edge no support nofirefox full support 71ie no support noopera full support yessafari ?
...And 9 more matches

WindowOrWorkerGlobalScope.setTimeout() - Web APIs
take this example: function cb() { f(); settimeout(cb, 0); } settimeout(cb, 0); setinterval(f, 0); in chrome and firefox, the 5th successive callback call is clamped; safari clamps on the 6th call; in edge its the 3rd one.
...firefox) — on setinterval() calls made from anywhere, or when a nested settimeout() is called where the nesting level is at least a certain depth.
... note: the minimum delay, dom_min_timeout_value, is 4 ms (stored in a preference in firefox: dom.min_timeout_value), with a dom_clamp_timeout_nesting_level of 5.
...And 9 more matches

max-width - CSS: Cascading Style Sheets
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetmax-widthchrome full support 1edge full support 12firefox full support 1notes full support 1n...
...firefox supports applying max-width to table elements.ie full support 7opera full support 4notes full support 4notes notes css 2.1 leaves the behavior of max-width with table undefined.
... opera supports applying max-width to table elements.safari full support 1webview android full support 4.4chrome android full support 18firefox android full support 4notes full support 4notes notes css 2.1 leaves the behavior of max-width with table undefined.
...And 9 more matches

Bootstrapped extensions - Archive of obsolete content
gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) introduces bootstrapped extensions.
... in firefox 10 and later the chrome.manifest file located in the root of the add-on's xpi (i.e.
...in firefox 8 and 9 you had to load/unload the manifest manually using nsicomponentmanager.addbootstrappedmanifestlocation() and nsicomponentmanager.removebootstrappedmanifestlocation().
...And 8 more matches

Chapter 2: Technologies used in developing extensions - Archive of obsolete content
and was originally published in japanese for the firefox developers conference summer 2007.
... shimoda-san is a co-author of firefox 3 hacks (o'reilly japan, 2008).
... before we dive into a thorough explanation, we'll quickly introduce the technologies used to develop firefox extensions.
...And 8 more matches

Add-ons - Archive of obsolete content
add-on sdk using the add-on sdk, you can create firefox add-ons.
... bootstrapped extensions browser.bookmarks.export( function() {...} // optional function ) code snippets … creating custom firefox extensions with the mozilla build system there is a wealth of material on creating extensions for firefox.
... firefox addons developer guide the original document is in japanese and distributed via the xuldev.org website.
...And 8 more matches

Microsummary topics - Archive of obsolete content
warning: microsummary support was removed in gecko 6.0 (firefox 6.0 / thunderbird 6.0 / seamonkey 2.3) programmatically installing a microsummary generator to programmatically install a microsummary generator -- for example, in an extension that helps users create custom generators for their favorite sites -- obtain a reference to the nsimicrosummaryservice interface implemented by the nsimicrosummaryservice component, then call its installgenerator() method, passing it an xml document containing the generator.
... for example, the following code snippet installs the microsummary generator from the creating a microsummary tutorial: var generatortext = ' \ <?xml version="1.0" encoding="utf-8"?> \ <generator xmlns="http://www.mozilla.org/microsummaries/0.1" \ name="firefox download count" \ uri="urn:{835daeb3-6760-47fa-8f4f-8e4fdea1fb16}"> \ <template> \ <transform xmlns="http://www.w3.org/1999/xsl/transform" version="1.0"> \ <output method="text"/> \ <template match="/"> \ <value-of select="id(\'download-count\')"/> \ <text> fx downloads</text> \ </template> \ </transform> \ </template> \ <pages> <include>http://(www\.)?spreadfirefox\.com/(index\.php)?</include> </pages> </generator> \ '; var dompa...
...note: when web sites install generators via window.sidebar.addmicrosummarygenerator(), firefox sets their uri attribute to urn:source:sourceurl, where sourceurl is the url from which the generator was downloaded.
...And 8 more matches

2006-11-03 - Archive of obsolete content
summary: mozilla.dev.apps.firefox - october 27, 2006 - november 3, 2006 announcements none this week.
... discussions google adsense plugin for firefox a user post a link to a plugin for displaying "adsense earning" within the status bar of the browser without logging into google.
... request to add option for removal of firefox profiles during setup or uninstall a user suggests an option to remove profiles during setup or uninstall.
...And 8 more matches

2006-11-04 - Archive of obsolete content
summary: mozilla.dev.apps.firefox - october 27, 2006 - november 3, 2006 announcements none this week.
... discussions adsense plugin for firefox a user post a link to a plugin for displaying "adsense earning" within the status bar of the browser without logging into google.
... to add option for removal of firefox profiles during setup or uninstall a user suggests an option to remove profiles during setup or uninstall.
...And 8 more matches

Building Mozilla XForms - Archive of obsolete content
getting started things to know first: the xforms extension has a dependency on the schema-validation extension, so you need to build both (that's done automatically) mozilla switched from cvs to mercurial starting with firefox 3.5.
... before you can start building the xforms extension, you should check your mozilla build environment by doing a regular firefox build.
...the following table gives you an overview of which version you want to build: firefox version gecko/toolkit version source code notes status firefox 2.0 gecko 1.8.1 cvs, branch mozilla_1_8_branch not developed any more last release: 0.8.5ff2 firefox 3.0 gecko 1.9.0 cvs, branch head not developed any more last release: 0.8.5ff3 firefox 3.5 gecko 1.9.1 xforms/schema-validation code does not build with firefox 3.5 any more not supported firefox 3.6 gecko 1.9.2 xforms/schema-validation code does not build with firefox 3.6 any more not developed any more last release: 0.8.6 firefox 4 gecko 2.0 mercurial, repositories mozilla-central xforms schema-validation mostly works upcoming 0.8.7 release if y...
...And 8 more matches

Add-ons
add-ons allow developers to extend and modify the functionality of firefox.
... among other things, an add-on could: change the appearance or content of particular websites modify the firefox user interface add new features to firefox there are several types of add-ons, but the most common type are extensions.
... developing extensions in the past, there were several toolsets for developing firefox extensions, but as of november 2017, extensions must be built using webextensions apis.
...And 8 more matches

Capturing a minidump
(you'll want the 32-bit version of windbg only if you are using a 32-bit version of firefox) then install it, the standard settings in the installation process are fine.
... capture a minidump connect firefox to the debugger.
... if firefox is not already running, then open windbg from the start menu (start->all programs->debugging tools for windows->windbg).
...And 8 more matches

How to get a stacktrace for a bug report
requirements you need a binary build of firefox from mozilla.org.
... note: when filing a crash report, it is important to know whether the crash occurs with firefox safe mode.
... the mozilla crash reporter window should automatically come up after firefox crashes.
...And 8 more matches

OS.File for the main thread
let decoder = new textdecoder(); // this decoder can be reused for several reads let promise = os.file.read("file.txt"); // read the complete file as an array promise = promise.then( function onsuccess(array) { return decoder.decode(array); // convert this array to a text } ); this example requires firefox 18 or a more recent version.
... these examples require firefox 19 or a more recent version.
... let promise = os.file.copy("oldname.txt", "newname.txt"); this example requires firefox 16 or a more recent version.
...And 8 more matches

Profiling with the Gecko Profiler and Local Symbols on Windows
you probably need a 64 bit build of firefox for this to work, though.
... it looks like we consume too much memory when creating the symbol table for this to work in 32 bit firefox builds.
... unfortunately, 32 bit is still the default when building firefox locally.
...And 8 more matches

Index
you might have been motivated to work with nss because it is used by the mozilla applications such as firefox, thunderbird, etc.
...(note: mozilla does not distribute a "fips mode"-ready nss with firefox.) this page attempts to provide an informal explanation of what it is, who would use it, and why.
... would you like to get involved and help us to improve the core security of mozilla firefox and other applications that make use of nss?
...And 8 more matches

Index
7 gcintegration developing mozilla, firefox, garbage collection, intermediate, intro, jsapi, needsupdate, spidermonkey, tools, memory the spidermonkey garbage collector (gc) will be changing a lot in the future.
... 13 jit optimization outcomes beginner, firefox, intro, needscontent, spidermonkey spidermonkey's optimizing jit, ionmonkey, uses different optimization strategies to speed up various operations.
... 518 parser api api, guide, javascript, spidermonkey example: 519 profiling spidermonkey guide 1.) get yourself an optimized libxul build of firefox, with debugger info.
...And 8 more matches

IDBFactory - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetidbfactorychrome full support 24 full support 24 no support 23 — 57prefixed prefixed implemented with the vendor prefix: webkitedge full sup...
...port 12firefox full support 16 full support 16 no support 10 — 16prefixed prefixed implemented with the vendor prefix: mozie partial support 10opera full support 15safari full support 7webview android full support yes full support yes no support ?
... — 57prefixed prefixed implemented with the vendor prefix: webkitchrome android full support 25 full support 25 no support 25 — 57prefixed prefixed implemented with the vendor prefix: webkitfirefox android full support 22opera android full support 14safari ios full support 8samsung internet android full support 1.5 full support 1.5 no support 1.5 — 7.0prefixed prefixed implemented with the vendor prefix: webkitcmpchrome ...
...And 8 more matches

max-height - CSS: Cascading Style Sheets
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetmax-heightchrome full support 18edge full support 12firefox full support 1notes full support ...
...firefox supports applying max-height to table elements.ie full support 7opera full support 7notes full support 7notes notes css 2.1 leaves the behavior of max-height with table undefined.
... opera supports applying max-height to table elements.safari full support 1.3webview android full support ≤37chrome android full support 18firefox android full support 4opera android full support 14safari ios full support 1samsung internet android full support 1.0fit-content experimentalchrome full support 46 full support 46 full support 25prefixed pref...
...And 8 more matches

Image file type and format guide - Web media technologies
abbreviation file format mime type file extension(s) browser compatibility apng animated portable network graphics image/apng .apng chrome, edge, firefox, opera, safari bmp bitmap file image/bmp .bmp chrome, edge, firefox, internet explorer, opera, safari gif graphics interchange format image/gif .gif chrome, edge, firefox, internet explorer, opera, safari ico microsoft icon image/x-icon .ico, .cur chrome, edge, firefox, internet explorer, opera, safari jpeg joint photograp...
...hic expert group image image/jpeg .jpg, .jpeg, .jfif, .pjpeg, .pjp chrome, edge, firefox, internet explorer, opera, safari png portable network graphics image/png .png chrome, edge, firefox, internet explorer, opera, safari svg scalable vector graphics image/svg+xml .svg chrome, edge, firefox, internet explorer, opera, safari tiff tagged image file format image/tiff .tif, .tiff none built-in; add-ons required webp web picture format image/webp .webp chrome, edge, firefox, opera the abbreviation for each format links to a longer description of the format, its capabilities, and detailed browser compatibility information; including which versions introduced support and specific special features that m...
... mime type image/apng file extension(s) .apng specification wiki.mozilla.org/apng_specification browser compatibility chrome 59, edge 12, firefox 3, opera 46, safari 8 maximum dimensions 2,147,483,647×2,147,483,647 pixels supported color modes color mode bits per component (d) description greyscale 1, 2, 4, 8, and 16 each pixel consists of a single d-bit value indicating the brightness of the greyscale pixel.
...And 8 more matches

Interacting with page scripts - Archive of obsolete content
expose objects to page scripts until firefox 30, you could use unsafewindow to perform the reverse procedure, and make objects defined in content scripts available to page scripts: // content-script.js unsafewindow.contentscriptobject = {"greeting" : "hello from add-on"}; // page-script.js var button = document.getelementbyid("show-content-script-var"); button.addeventlistener("click", function() { // access object defined by conten...
...t script console.log(window.contentscriptobject.greeting); // "hello from add-on" }, false); after firefox 30, you can still do this for primitive values, but can no longer do it for objects.
...age script can call the function as foo.greetme(): <html> <head> </head> <body> <input id="test" type="button" value="click me"/> <script> var test = document.getelementbyid("test"); test.addeventlistener("click", function() { alert(window.foo.greetme("page script")); }, false); </script> </body> </html> reverting to the old behavior you can switch firefox back to the old behavior in which content scripts could expose objects and functions to page scripts using unsafewindow.
...And 7 more matches

panel - Archive of obsolete content
to do this, save the html in your add-on's data directory and load it using the data.url() method exported by the self module, like this: var mypanel = require("sdk/panel").panel({ contenturl: require("sdk/self").data.url("myfile.html") }); mypanel.show(); from firefox 34, you can use "./myfile.html" as an alias for self.data.url("myfile.html").
... getting user input note: this example uses the action button api, which is only available from firefox 29 onwards.
... scripting trusted panel content note: this example uses the action button api, which is only available from firefox 29 onwards.
...And 7 more matches

Low-Level APIs - Archive of obsolete content
chrome the chrome module gives an add-on sdk add-on access to the components object, which in turn gives it access to a large set of privileged low-level firefox apis.
... dev/panel enables you to extend the firefox developer tools.
... frame/hidden-frame creates firefox frames (i.e.
...And 7 more matches

Extension Versioning, Update and Compatibility - Archive of obsolete content
as a rough overview this is a version string split by periods, some examples: 2.0 1.0b1 3.0pre1 5.0.1.2 note: before firefox 1.5 the more basic firefox version format was used: major.minor.release.build[+] where only digits were allowed.
... the toolkit version format supports the firefox version format but allows greater flexibility.
... firefox 3 note in applications based on gecko 1.9 you can also use a targetapplication entry with an id toolkit@mozilla.org and minversion and maxversion that match the toolkit version of the running application.
...And 7 more matches

Migrating raw components to add-ons - Archive of obsolete content
historically, firefox has allowed third party contributions to be added to the application's components/ directory, but beginning with firefox 3.6, this is no longer permitted.
... components added in this way are invisible to users and cannot be managed through the firefox add-ons manager.
... what's worse, though, is that these components don't have a mechanism for specifying the versions of firefox with which they are compatible, leading to poor integration and instability as users upgrade their firefox installations.
...And 7 more matches

XPCOM Objects - Archive of obsolete content
firefox can be seen as composed of two layers.
...you can think of xpcom as a reference to all the capabilities available on the lower layers of firefox.
...if you want to see the list in your current firefox installation, just run the following code in the error console: var str = ""; for (var i in components.classes) { str += i + "\n" }; str a run on firefox 3.6.2 with a few extensions installed yields 876 strings.
...And 7 more matches

Downloading Nightly or Trunk Builds - Archive of obsolete content
cutting edge firefox downloads.
...so to figure out how to download a cutting edge or bleeding edge or 'beta' version of firefox, you need to look for a "build" (which is developer-speak for the packaged files you can download) of 1.9.1 (the number of the underlying 'platform' called 'gecko' or 'mozilla' that firefox uses).
... as it turns out there is a platform number for every firefox number, but they are not the same number.
...And 7 more matches

Building accessible custom components in XUL - Archive of obsolete content
firefox 1.5 is the first browser to support dhtml accessibility; it maps the declarations within the html page to the underlying accessibility architecture so that assistive technologies can "read" a web page and know how to present these complex controls to the end user.
...(the firefox interface itself is built in xul, as well as the graphical interface presented by firefox extensions.) xul itself has a much richer set of built-in controls than html.
...firefox ships with a tabbox element and a tree element, and these elements are fully accessible out-of-the-box.
...And 7 more matches

XULRunner tips - Archive of obsolete content
extension:manager-themes javascript console chrome://global/content/console.xul global:console about:config chrome://global/content/config.xul developer extensions venkman need a custom build or a compatible extension need to edit compatibility in needs a method to start venkman (usually by overlaying the main xul file, similar to existing code for firefox, suite, etc.) the function toopenwindowbytype() needs to be defined.
... for another application you can skip to the next step) follow the instructions above through "unzip the package." create a file in the extensions directory of your application with the same name as the dom inspector id (inspector@mozilla.org) containing one line of text -- the exact path to the root directory of dom inspector (where the install.rdf is) like this one: /home/username/.mozilla/firefox/numbersandletters/extensions/inspector@mozilla.org/ now create a javascript file with the following code and include it in the main window of your application: function startdomi() { // load the window datasource so that browser windows opened subsequent to dom // inspector show up in the dom inspector's window list.
...this way i have one directory where i keep all my mozilla extensions, and each application (firefox, thunderbird) simply contains a few small, one line files pointing to the location of the extensions.
...And 7 more matches

2006-10-26 - Archive of obsolete content
summary: mozilla.dev.apps.firefox - october 20, 2006 - october 26, 2006 announcements none this week.
...(what it is, how to use it) cross-post-and followup fx2 announcment to support-firefox request for when the announcement about firefox 2's release to be posted on the mozilla.dev.apps.firefox newsgroup.
... firefox killer features suggestion john describes his suggestions for "killer features" for firefox.
...And 7 more matches

2006-10-27 - Archive of obsolete content
summary: mozilla.dev.apps.firefox - october 20, 2006 - october 27, 2006 announcements none this week.
...(what it is, how to use it) cross-post-and followup fx2 announcment to support-firefox request for when the announcement about firefox 2's release to be posted on the mozilla.dev.apps.firefox newsgroup.
... firefox killer features suggestion john describes his suggestions for "killer features" for firefox.
...And 7 more matches

Setting up your own test automation environment - Learn web development
you can find details of where to get them from on the selenium-webdriver page (see the table in the first section.) obviously, some of the browsers are os-specific, but we're going to stick with firefox and chrome, as they are available across all the main oses.
... download the latest geckodriver (for firefox) and chromedriver drivers.
... create a new file inside your project directory called google_test.js: give it the following contents, then save it: const webdriver = require('selenium-webdriver'), by = webdriver.by, until = webdriver.until; const driver = new webdriver.builder() .forbrowser('firefox') .build(); driver.get('http://www.google.com'); driver.findelement(by.name('q')).sendkeys('webdriver'); driver.sleep(1000).then(function() { driver.findelement(by.name('q')).sendkeys(webdriver.key.tab); }); driver.findelement(by.name('btnk')).click(); driver.sleep(2000).then(function() { driver.gettitle().then(function(title) { if(title === 'webdriver - google search') { c...
...And 7 more matches

Android-specific test suites
there are several android-specific test suites that run on the firefox for android codebase: android-test ensures that the code passes unit tests.
... all of these suites require a functioning build of firefox for android — either a full build or an artifact build.
... running android-test to run android-test, first build firefox for android with your changes; then run ./mach android test this will run the tests and report the results to stdout, as well as produce an html report.
...And 7 more matches

Bootstrapping a new locale
where active development of the upcoming release of firefox occurs) and then begin the necessary work for translation.
... for instance, for firefox 3.6, we use mozilla-1.9.2.
... for instance, firefox 3.6 is released from the 1.9.2 branch.
...And 7 more matches

FIPS Mode - an explanation
(note: mozilla does not distribute a "fips mode"-ready nss with firefox.) this page attempts to provide an informal explanation of what it is, who would use it, and why.
... if you're a us government worker, and you want to use a mozilla software product such as firefox, or any product that uses nss, you will want to use it in a way that is fully conformant with all the relevant fips regulations.
... so, in order for mozilla firefox and thunderbird to be usable by people who are subject to the fips regulations, mozilla's cryptographic software must be able to operate in a mode that is fully compliant with fips 140.
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Mozilla Projects
mozilla has a number of projects other than firefox itself.
... many of these are components of firefox or are tools used to create firefox, but may be used by other projects as well.
... compare-locales compare-locales is a python script that helps localizers to check their work without running firefox or another application.
...And 7 more matches

Using Objective-C from js-ctypes
speech synthesis example let's start with the following objective-c code, which invokes the speech synthesis api to say "hello, firefox!".
... #import <appkit/appkit.h> int main(void) { nsspeechsynthesizer* synth = [[nsspeechsynthesizer alloc] initwithvoice: nil]; [synth startspeakingstring: @"hello, firefox!"]; // wait until start speaking.
... nsstring* text = [nsstring initwithcstring: "hello, firefox!" encoding: nsutf8stringencoding]; this will be converted into the following c code.
...And 7 more matches

NavigationPreloadManager - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetnavigationpreloadmanager experimentalchrome full support 62edge full support 18firefox no support nonotes no support ...
... webview android full support 62chrome android full support 62firefox android no support nonotes no support nonotes notes implementation tracked in bug 1290958opera android full support 46safari ios ?
... samsung internet android full support 8.0disable experimentalchrome full support 62edge full support 18firefox no support nonotes no support nonotes notes implementation tracked in bug 1290958ie ?
...And 7 more matches

PhotoCapabilities - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetphotocapabilities experimentalchrome full support 59edge full support ≤79firefox ?
... webview android full support 59chrome android full support 59firefox android ?
... samsung internet android full support 7.0filllightmode experimentalchrome full support 59edge full support ≤79firefox ?
...And 7 more matches

PushRegistrationManager - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetpushregistrationmanager experimentaldeprecatedchrome no support noedge no support nofirefox ?
... webview android no support nochrome android no support nofirefox android ?
... samsung internet android no support nogetregistration experimentaldeprecatedchrome no support noedge no support nofirefox ?
...And 7 more matches

WritableStream - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetwritablestream experimentalchrome full support 59edge full support 16firefox no support noie no support ...
... webview android full support 59chrome android full support 59firefox android no support noopera android full support 44safari ios ?
... samsung internet android full support 7.0writablestream() constructor experimentalchrome full support 59edge full support 16firefox no support noie no support noopera full support 47safari ?
...And 7 more matches

break-after - CSS: Cascading Style Sheets
support in multi-column layout desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetsupported in multi-column layoutchrome full support 50edge full support 12firefox no support noie full support ...
... 10opera full support 37 full support 37 no support 11.1 — 12.1safari no support nowebview android full support 50chrome android full support 50firefox android no support noopera android full support 37 full support 37 no support 11.1 — 12.1safari ios no support nosamsung internet android full support ...
... 5.0alwayschrome no support noedge no support nofirefox no support noie no support noopera no support nosafari no support nowebview android no support nochrome android no support nofirefox android no support noopera android no support nosafari ios no support nosamsung internet android no sup...
...And 7 more matches

break-before - CSS: Cascading Style Sheets
support in multi-column layout desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetsupported in multi-column layoutchrome full support 50edge full support 12firefox full support 65ie full support ...
... 10opera full support 37 full support 37 no support 11.1 — 12.1safari no support nowebview android full support 50chrome android full support 50firefox android full support 65opera android full support 37 full support 37 no support 11.1 — 12.1safari ios no support nosamsung internet android full support ...
... 5.0always experimentalchrome no support noedge no support nofirefox no support noie no support noopera no support nosafari no support nowebview android no support nochrome android no support nofirefox android no support noopera android no support nosafari ios no support nosamsung internet android ...
...And 7 more matches

font-variant - CSS: Cascading Style Sheets
values> = [ lining-nums | oldstyle-nums ]<numeric-spacing-values> = [ proportional-nums | tabular-nums ]<numeric-fraction-values> = [ diagonal-fractions | stacked-fractions ]<east-asian-variant-values> = [ jis78 | jis83 | jis90 | jis04 | simplified | traditional ]<east-asian-width-values> = [ full-width | proportional-width ] examples setting the small-caps font variant html <p class="normal">firefox rocks!</p> <p class="small">firefox rocks!</p> css p.normal { font-variant: normal; } p.small { font-variant: small-caps; } result specifications specification status comment css fonts module level 3the definition of 'font-variant' in that specification.
... desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfont-variantchrome full support 1edge full support 12firefox full support 1ie full support 4op...
...era full support 3.5safari full support 1webview android full support 1chrome android full support 18firefox android full support 4opera android full support 11safari ios full support 1samsung internet android full support 1.0css fonts module level 3 shorthandchrome full support 52edge full support 79firefox full support ...
...And 7 more matches

position - CSS: Cascading Style Sheets
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetpositionchrome full support 1edge full support 12firefox full support 1notes full support 1no...
...tes notes before firefox 57, absolute positioning did not work correctly when applied to elements inside tables that have border-collapse applied to them (bug 1379306).notes before firefox 30, absolute positioning of table rows and row groups was not supported (bug 63895).ie full support 4opera full support 4safari full support 1webview android full support ≤37chrome android full support 18firefox android full support 4notes full support 4notes notes before firefox 57, absolute positi...
...oning did not work correctly when applied to elements inside tables that have border-collapse applied to them (bug 1379306).notes before firefox 30, absolute positioning of table rows and row groups was not supported (bug 63895).opera android full support 14safari ios full support 1samsung internet android full support 1.0absolutely-positioned flex childrenchrome full support 52edge full support 12firefox full support 52ie full support 10opera full support ...
...And 7 more matches

Localizations and character encodings - Developer guides
to specify that a page is using, for example, the utf-8 character encoding (as per the recommendation), simply place the following line in the <head> block: <meta charset="utf-8"> details and browser internals when the encoding is declared by web content like the html specification requires, firefox will use that encoding for turning the bytes into the internal representation.
... firefox needs a fallback encoding that it uses for non-conforming legacy content that doesn't declare its encoding.
...in order to work with legacy content, some firefox localizations need a non-windows-1252 fallback encoding.
...And 7 more matches

WebAssembly.Table - JavaScript
desktopmobileserverchromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetnode.jstablechrome full support 57edge full support 16firefox full support 52notes full support ...
... 52notes notes disabled in the firefox 52 extended support release (esr).ie no support noopera full support 44safari full support 11webview android full support 57chrome android full support 57firefox android full support 52notes full support 52notes notes disabled in the firefox 52 extended support release (esr).opera android full support 43safari ios full support 11samsung internet android ...
... full support 7.0nodejs full support 8.0.0table() constructorchrome full support 57edge full support 16firefox full support 52notes full support 52notes notes disabled in the firefox 52 extended support release (esr).ie no support noopera full support 44safari full support 11webview android full support 57chrome android full support ...
...And 7 more matches

JavaScript Object Management - Archive of obsolete content
the first step to good javascript object management is having a namespace, or a javascript object that contains our code and data, that you know will not conflict with firefox code or other extensions.
...for instance, you could replace a method in any object in the firefox chrome, so that it behaves differently than how it normally does.
...firefox has a minimum delay of 10-15ms (taken from this blog post), so it won't really run instantly.
...And 6 more matches

Local Storage - Archive of obsolete content
it is strongly recommended that you keep your local files inside the firefox profile directory.
...a full list of these flags can be found in the firefox source.
...this is the default behavior when firefox is uninstalled: the profile information remains intact and it will be there waiting for you if firefox is installed again.
...And 6 more matches

Extensions support in SeaMonkey 2 - Archive of obsolete content
differences as compared to other toolkit/-based applications you need to overlay/open different chrome urls as compared to firefox.
... some urls are listed below: url in firefox url in seamonkey overlays chrome://browser/content/browser.xul chrome://navigator/content/navigator.xul main browser window chrome://browser/content/pageinfo/pageinfo.xul chrome://navigator/content/pageinfo/pageinfo.xul page info window chrome://browser/content/preferences/permissions.xul chrome://communicator/content/permis...onsmanager.xul permissions manager dialog urls added in 2.1 url in firefox url in seamonkey chrome://browser/content/bookmarks/bookmarkspanel.xul chrome://communicator/content/bookmarks/bm-panel.xul chrome://browser/content/places/places.xul chrome:...
...some important menu ids are listed below, menu ids are based on firefox 3 source code: menu id in firefox menu id in seamonkey 1.x and 2.0 seamonkey 2.1 overlays menu_filepopup menu_filepopup menu_filepopup file menu popup menu_editpopup menu_edit_popup menu_editpopup edit menu popup menu_viewpopup menu_view_popup menu_view_popup view menu popup - gopopup gopopup go menu popup placespop...
...And 6 more matches

Source code directories overview - Archive of obsolete content
this document contains material for seamonkey, firefox, and toolkit.
... browser contains the code for firefox.
... toolkit contains the code for the toolkit used for firefox, thunderbird and other standalone applications.
...And 6 more matches

Menu - Archive of obsolete content
because it is still under development, the api currently lives in the future and must be imported before it is used: jetpack.future.import("menu"); menus all menus in jetpack are jetpack.menu objects, including both built-in firefox menus and menus that features create.
... menuitems menus in jetpack contain menuitem objects, including both built-in firefox menus and menus that features create.
... due to a platform bug in firefox, on os x only, for menus in the menu bar only, command functions defined on menuitems with submenus are not called when descendant menuitems are clicked.
...And 6 more matches

Elements - Archive of obsolete content
bindings this section is tested and adjusted for the current firefox implementation.
...</html:b><children/></content> </binding> </bindings> you can view the result by opening helloworld.html in firefox.
...firefox 2) it is impossible to attach bindings to table sub-elements (rows, cells etc.) you can attach binding only to the table element itself.
...And 6 more matches

Extensions - Archive of obsolete content
adding a new menu the main menu bar in firefox has the id 'main-menubar'.
...for a list of the ids of the menus for firefox, see firefox menus.
... in firefox, the browser area that displays web pages has only one context menu.
...And 6 more matches

Custom toolbar button - Archive of obsolete content
this page tells you step-by-step how to make a custom toolbar button in firefox, seamonkey 2.0, thunderbird or sunbird.
... supported applications you can use the steps on this page with any or all of these mozilla applications: firefox 1.5 or a later version seamonkey 2.0 or a later version thunderbird 1.5 or a later version sunbird 0.3 or a later version pre-release versions of these (alphas, betas and release candidates) are also ok.
... open the file in firefox (for example, by dragging it and dropping it in firefox, or by choosing file – open file...
...And 6 more matches

XUL Structure - Archive of obsolete content
this chrome package registration is the way firefox extensions are able to add features to the browser.
...firefox and thunderbird, as well as number of other components are all written in xul and are all accessible via chrome urls.
... you can examine these packages by looking in the chrome directory where firefox or another xul application is built.
...And 6 more matches

Using nsIXULAppInfo - Archive of obsolete content
note that while firefox 1.5, thunderbird 1.5, and xulrunner 1.8-based applications support nsixulappinfo, older applications, such as firefox and thunderbird 1.0, do not support it.
... const firefox_id = "{ec8030f7-c20a-464f-9b0e-13a3a9e97384}"; const thunderbird_id = "{3550f703-e582-4d05-9a08-453d09bdfdc6}"; const seamonkey_id = "{92650c4d-4b8e-4d2a-b7eb-24ecf4f6b63a}"; var appinfo = components.classes["@mozilla.org/xre/app-info;1"] .getservice(components.interfaces.nsixulappinfo); if(appinfo.id == firefox_id) { // running under firefox } else if(appinfo.id == thun...
...derbird_id) { // running under thunderbird } else if(appinfo.id == seamonkey_id) { // running under seamonkey } else { // another app } note: you could also use nsixulappinfo.name, which is a human-readable name for the application, such as "firefox", "thunderbird" or "seamonkey", but who knows, maybe they'll rename it again!
...And 6 more matches

ECMAScript 2015 support in Mozilla - Archive of obsolete content
it defines the standard for the javascript implementation in spidermonkey, the engine used in firefox and other mozilla applications.
... standard library additions to the array object array iteration with for...of (firefox 13) array.from() (firefox 32) array.of() (firefox 25) array.prototype.fill() (firefox 31) array.prototype.find(), array.prototype.findindex() (firefox 25) array.prototype.entries(), array.prototype.keys() (firefox 28), array.prototype.values() array.prototype.copywithin() (firefox 32) get array[@@species] (firefox 48) new map and set objects, and their weak counterparts map (firef...
...ox 13) map iteration with for...of (firefox 17) map.prototype.foreach() (firefox 25) map.prototype.entries() (firefox 20) map.prototype.keys() (firefox 20) map.prototype.values() constructor argument: new map(null) (firefox 37) monkey-patched set() in constructor (firefox 37) get map[@@species] (firefox 41) set (firefox 13) set iteration with for...of (firefox 17) set.prototype.foreach() (firefox 25) set.prototype.entries(), set.prototype.keys(), set.prototype.values() (firefox 24) constructor argument: new set(null) (firefox 37) monkey-patched add() in constructor (firefox 37) get set[@@species] (firefox 41) weakmap (firefox 6) weakmap.clear() (firefox 20) optional iterable argument in weakmap constructor (firefox 36) ...
...And 6 more matches

New in JavaScript - Archive of obsolete content
this chapter contains information about javascript's version history and implementation status for mozilla/spidermonkey-based javascript applications, such as firefox.
...firefox 4 was the last version which referred to a javascript version (1.8.5).
... javascript 1.5 version shipped in netscape navigator 6.0 and firefox 1.0.
...And 6 more matches

What are browser developer tools? - Learn web development
three ways: keyboard: ctrl + shift + i, except internet explorer and edge: f12 macos: ⌘ + ⌥ + i menu bar: firefox: menu ➤ web developer ➤ toggle tools, or tools ➤ web developer ➤ toggle tools chrome: more tools ➤ developer tools safari: develop ➤ show web inspector.
... layout: in firefox, this area includes two sections: box model: represents visually the current element's box model, so you can see at a glance what padding, border and margin is applied to it, and how big its content is.
... fonts: in firefox, the fonts tab shows the fonts applied to the current element.
...And 6 more matches

Cross Process Object Wrappers
this document describes cross process object wrappers (cpows), which enable chrome code to synchronously access content in multiprocess firefox.
... note that from firefox 47 onwards, unsafe cpow usage is no longer permitted in browser code.
... in multiprocess firefox, chrome code runs in a different process from web content.
...And 6 more matches

Power profiling overview
reducing) the power consumption caused by firefox and firefox os.
...each of these samples can trigger a wakeup, which consumes power and obscures firefox's natural wakeup patterns.
...some can also be measured via instrumentation within firefox itself.
...And 6 more matches

Places Developer Guide
this document is for extension and application developers who want to use the bookmarks and history apis in firefox 3.
...overview places is the umbrella term for a set of apis for managing browsing history and uri metadata first introduced in firefox 3.
...however, firefox developers can take advantage of several helper apis that are browser-specific: fuel - a collection of wrapper apis for easing access to a number of firefox utilities and services nsiplacestransactionsservice - a firefox service for modifying bookmarks in a transactional manner, providing facilities for undo/redo places utilities for javascript - accessors and helper functions for firefox ...
...And 6 more matches

nsIDownloadManager
this interface is deprecated as of firefox 26.
... inherits from: nsisupports last changed in gecko 1.9.1 (firefox 3.5 / thunderbird 3.0 / seamonkey 2.0) implemented by: @mozilla.org/download-manager;1.
... endbatchupdate() obsolete since gecko 1.9.1 (firefox 3.5 / thunderbird 3.0 / seamonkey 2.0) indicate that a batch update is ending.
...And 6 more matches

nsIEditorIMESupport
inherits from: nsisupports last changed in gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) method overview void begincomposition(in nstexteventreplyptr areply); native code only!
... methods native code only!begincomposition obsolete since gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1)this feature is obsolete.
...void begincomposition( in nstexteventreplyptr areply ); parameters areply endcomposition() obsolete since gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) handles the end of inline input composition.
...And 6 more matches

nsIFaviconService
1.0 66 introduced gecko 1.8 inherits from: nsisupports last changed in gecko 22.0 (firefox 22.0 / thunderbird 22.0 / seamonkey 2.19) implemented by: @mozilla.org/browser/favicon-service;1.
... getfavicondata() obsolete since gecko 22.0 (firefox 22.0 / thunderbird 22.0 / seamonkey 2.19) note: this method was removed in gecko 22.0.
... getfavicondataasdataurl() obsolete since gecko 22.0 (firefox 22.0 / thunderbird 22.0 / seamonkey 2.19) note: this method was removed in gecko 22.0.
...And 6 more matches

nsINavBookmarkObserver
1.0 66 introduced gecko 1.8 inherits from: nsisupports last changed in gecko 21.0 (firefox 21.0 / thunderbird 21.0 / seamonkey 2.18) method overview void onbeforeitemremoved(in long long aitemid, in unsigned short aitemtype, in long long aparentid, in acstring aguid, in acstring aparentguid); obsolete since gecko 21.0 void onbeginupdatebatch(); void onendupdatebatch(); void onfolderadded(in print64 folder, in print64 parent, in print32 index); obsolete since gecko 1.9 void onfolderchanged(in print64 folder, in acstring property); obsolete since gecko 1.9 void onfoldermoved(in print64 folder...
...ime atime, in unsigned long atransitiontype, in nsiuri auri, in long long aparentid, in acstring aguid, in acstring aparentguid); void onseparatoradded(in print64 parent, in print32 index); obsolete since gecko 1.9 void onseparatorremoved(in print64 parent, in print32 index); obsolete since gecko 1.9 methods onbeforeitemremoved() obsolete since gecko 21.0 (firefox 21.0 / thunderbird 21.0 / seamonkey 2.18) note: this method was removed in gecko 21.0 as part of bug 826409.
... onfolderadded() obsolete since gecko 1.9 (firefox 3) notify this observer that a bookmark folder has been added.
...And 6 more matches

Working with windows in chrome code
with xpcnativewrappers turned on (which is the default in firefox 1.5+), your extension can safely access the dom of the content document, but not the content javascript.
...for example: // alerts the title of the document displayed in the content-primary widget alert(content.document.title); for example, you can use content.document in a browser.xul overlay to access the web page in the selected tab in a firefox window.
... accessing a document in the sidebar firefox has a sidebar, which is implemented as a <browser> element with id="sidebar".
...And 6 more matches

FileReaderSync - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfilereadersyncchrome full support yesedge full support 12firefox full support 8ie full support ...
... yesopera full support yessafari full support yeswebview android full support yeschrome android full support yesfirefox android full support 8opera android full support yessafari ios full support yessamsung internet android full support yesreadasarraybufferchrome full support yesedge full support 12firefox full support ...
... 8ie full support yesopera full support yessafari full support yeswebview android full support yeschrome android full support yesfirefox android full support 8opera android full support yessafari ios full support yessamsung internet android full support yesreadasbinarystringchrome full support yesedge full support ...
...And 6 more matches

Browser storage limits and eviction criteria - Web APIs
in firefox, the following technologies make use of browser data storage to store data when required.
... we term them "quota clients" in this context: indexeddb asm.js caching cache api cookies note: in firefox, web storage will soon start to use the same storage management tools too, as described in this document.
...this will only be evicted if the user chooses to (for example, in firefox you can choose to delete all stored data or only stored data from selected origins by going to preferences and using the options under privacy & security > cookies & site data).
...And 6 more matches

NotificationEvent - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetnotificationevent experimentalchrome full support 42edge full support ≤18firefox full support 44notes full support ...
... 44notes notes extended support releases (esr) before firefox 78 esr do not support service workers and the push api.ie ?
... webview android no support nochrome android full support 42firefox android full support 44opera android full support 37safari ios ?
...And 6 more matches

Slottable - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetslottable experimentalchrome full support 53edge full support 79firefox full support 63 full support ...
...to change preferences in firefox, visit about:config.
...to change preferences in firefox, visit about:config.ie no support noopera full support 40safari full support 10.1webview android full support 53chrome android full support 53firefox android full support 63 full support 63 ...
...And 6 more matches

Storage Access API - Web APIs
access requests are automatically denied if the browser detects that the user hasn’t interacted with the embedded content in a first-party context recently (in firefox, "recently" is "within 30 days").
...prompting heuristics currently vary across the two implementers of the storage access api — safari shows prompts for all embedded tracking content that has not previously received storage access, while firefox only prompts users after a tracking origin has requested storage access on more than a threshold number of sites.
... safari implementation differences although the api surface is the same, websites using the storage access api should expect differences in the level and extent of storage access they receive between firefox and safari.
...And 6 more matches

Browser compatibility and Scroll Snap - CSS: Cascading Style Sheets
firefox initially implemented an early version of the scroll snap specification, called scroll snap points.
... in firefox 68 the new version of the specification will be shipped and these old properties removed.
... what should i do if i used the old firefox implementation?
...And 6 more matches

background-size - CSS: Cascading Style Sheets
note: the behavior of <gradient>s changed in gecko 8.0 (firefox 8.0 / thunderbird 8.0 / seamonkey 2.5).
...in firefox 43, as opposed to chrome 52, an explicit background-size causes preserveaspectratio to be ignored.
...rendering of <gradient>s in such cases changed in firefox 8, and at present is generally inconsistent across browsers, which do not all implement rendering in full accordance with the css3 background-size specification and with the css3 image values gradient specification.
...And 6 more matches

break-inside - CSS: Cascading Style Sheets
fusce iaculis urna id neque dapibus, eu lacinia lectus dictum.</p> <figure> <img src="https://udn.realityripple.com/samples/fe/4508d88f78.png"> <figcaption>the firefox logo — fox wrapped around the world</figcaption> </figure> <p>praesent condimentum dui dui, sit amet rutrum diam tincidunt eu.
... desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetsupported in multi-column layoutchrome full support 50edge full support 12firefox full support 65ie full support ...
... 10opera full support 37 full support 37 no support 11.1 — 12.1safari full support 10webview android full support 50chrome android full support 50firefox android full support 65opera android full support 37 full support 37 no support 11.1 — 12.1safari ios full support 10samsung internet android full support ...
...And 6 more matches

Audio and Video Delivery - Developer guides
currently, to support all browsers we need to specify two formats, although with the adoption of mp3 and mp4 formats in firefox and opera, this is changing fast.
...this makes up part of a wider technology known as webrtc (web real-time communications) and is compatible with the latest versions of chrome, firefox and opera.
... note: the playback range portion of the media element uri specification was added to gecko 9.0 (firefox 9.0 / thunderbird 9.0 / seamonkey 2.6).
...And 6 more matches

<input>: The Input (Form Input) element - HTML: Hypertext Markup Language
note: although not required by the specification, firefox will by default persist the dynamic disabled state of an <input> across page loads.
...<datalist id="fruitsxx"> <option>cherry</option> <option>banana</option> <option>mango</option> <option>orange</option> <option>blueberry</option> </datalist> <datalist id="urlsxx"> <option>https://developer.mozilla.org</option> <option>https://caniuse.com/</option> <option>https://mozilla.com</option> <option>https://mdn.github.io</option> <option>https://www.youtube.com/user/firefoxchannel</option> </datalist> <p><label for="textx">text</label> <input type="text" list="fruitsxx" id="textx"/></p> <p><label for="colorx">color</label> <input type="color" list="colorsxx" id="colorx"/></p> <p><label for="rangex">range</label> <input type="range" min="0" max="64" list="numbersxx" id="rangex"/></p> <p><label for="numberx">number</label> <input type="number" min="0" max="64" list="...
...firefox for android only.
...And 6 more matches

Resource URLs - HTTP
resource urls, urls prefixed with the resource: scheme, are used by firefox and firefox browser extensions to load resources internally, but some of the information is available to sites the browser connects to as well.
... in this article, we focus on resource uris, which are used internally by firefox to point to built-in resources.
... threats because some of the information shared by resource: urls is available to websites, a web page could run internal scripts and inspect internal resources of firefox, including the default preferences, which could be a serious security and privacy issue.
...And 6 more matches

Performance fundamentals - Web Performance
platform performance optimizations this section provides a brief overview of how firefox/gecko contributes to performance generally, below the level of all applications.
...many years of improvements targeting this content, like parallel html parsing, intelligent scheduling of reflows and image decoding, clever layout algorithms, etc., translate just as well to improving web applications on firefox.
...firefox is highly optimized to scroll arbitrary content; this is usually not a concern.
...And 6 more matches

SDK and XUL Comparison - Archive of obsolete content
compatibility although we can't promise we'll never break a high-level api, maintaining compatibility across firefox versions is a top priority for us.
... we've designed the apis to be forward-compatible with the new multiple process architecture (codenamed electrolysis) planned for firefox.
... we also expect to support both desktop and mobile firefox using a single edition of the sdk: so you'll be able to write one extension and have it work on both products.
...And 5 more matches

XUL Migration Guide - Archive of obsolete content
because we expect to keep these apis compatible as new versions of firefox are released, we call them the "supported" apis.
...if the supported apis do what you need, they're the best option: you get the benefits of compatibility across firefox releases and of the sdk's security model.
...for example, action buttons appear by default in the main firefox toolbar (although users may relocate them by toolbar customization) because it makes for a better user experience for add-ons to expose their interfaces in a consistent way.
...And 5 more matches

places/bookmarks - Archive of obsolete content
usage this module exports: three constructors: bookmark, group, and separator, corresponding to the types of objects, referred to as bookmark items, in the bookmarks database in firefox two additional functions, save() to create, update, and remove bookmark items, and search() to retrieve the bookmark items that match a particular set of criteria.
... let { search, unsorted } = require("sdk/places/bookmarks"); // simple query with one object search( { query: "firefox" }, { sort: "title" } ).on("end", function (results) { // results matching any bookmark that has "firefox" // in its url, title or tag, sorted by title }); // multiple queries are or'd together search( [{ query: "firefox" }, { group: unsorted, tags: ["mozilla"] }], { sort: "title" } ).on("end", function (results) { // our first query is the same as the simple query above; // all of...
... // `inputitems` matches the initial input as an array, // so `inputitems[0] === mybookmark` }); // saving multiple bookmarks, as duck-types in this case let bookmarks = [ { title: "mozilla", url: "http://mozilla.org", type: "bookmark" }, { title: "firefox", url: "http://firefox.com", type: "bookmark" }, { title: "twitter", url: "http://twitter.com", type: "bookmark" } ]; save(bookmarks).on("data", function (item, inputitem) { // each item in `bookmarks` has its own `data` event }).on("end", function (results, inputresults) { // `results` is an array of items saved in the same order // as they were passed in.
...And 5 more matches

jpm-mobile - Archive of obsolete content
you can use jpm and jpm-mobile for firefox 38 and onwards.
...enables you to run and test add-ons for firefox mobile (aka fennec).
... command reference there are currently two jpm commands: jpm-mobile run launch an instance of firefox with your add-on installed.
...And 5 more matches

Preferences - Archive of obsolete content
information here applies to the mozilla suite, firefox, thunderbird, and possibly other mozilla-based applications.
... (this is not exactly how it's coded in libpref, but it's equivalent) where the default values are read from all mozilla-based applications read (application directory)/defaults/preferences/*.js in addition to that, recent versions of toolkit applications (firefox 1.0, thunderbird 1.0, and the like but not the mozilla suite) read extension defaults -- usually located in (profile folder)/extensions/(id)/defaults/preferences/ these files use simple javascript-like syntax.
... to add a default value for a preference, you should add a line like this to your default preferences file: pref("extensions.extensionname.preferencename", false); how to install an extension's defaults files for mozilla suite (not firefox and thunderbird), copy them to (appdir)/defaults/pref in your install script.
...And 5 more matches

Session store API - Archive of obsolete content
session store makes it possible for extensions to easily save and restore data across firefox sessions.
... one key scenario in which supporting this feature can be crucial for an extension: firefox 2 lets users undo the closing of tabs.
... knowing when to restore each time firefox is about to restore a tab, an event of type sstabrestoring is sent.
...And 5 more matches

Signing an extension - Archive of obsolete content
for an extension to work in firefox it must be signed by mozilla, not by yourself.
... this article describes how to digitally sign your extension for firefox and thunderbird, with a code signing certificate for object signing.
... sudo port install nss export your certificate if you have your certificate in firefox, export it by following the steps below.
...And 5 more matches

Supporting search suggestions in search plugins - Archive of obsolete content
firefox supports search suggestions in opensearch plugins; as the user types in the search bar, firefox queries the url specified by the search plugin to fetch live search suggestions.
...(this means that a suggestion-supporting engine plugin will have two <url> elements, the other one being the main text/html search url.) for example, the yahoo search plugin has this <url> entry: <url type="application/x-suggestions+json" template="http://ff.search.yahoo.com/gossip?output=fxjson&command={searchterms}"/> if the user types "fir" into the search bar, then pauses, firefox inserts "fir" in place of {searchterms} and queries that url: <url type="application/x-suggestions+json" template="http://ff.search.yahoo.com/gossip?output=fxjson&command=fir"/> the results are used to construct the suggestion list box.
... see creating opensearch plugins for firefox to learn more about how to implement a search plugin.
...And 5 more matches

Creating a Help Content Pack - Archive of obsolete content
however, while it may seem like this is a disadvantage, it's actually an advantage - if you make an error you'll know immediately, and you should be able to easily figure out what the problem is by directly loading the file in firefox.
... nc:title is where you specify the title (e.g., "mozilla firefox help") for the help window.
...in firefox 1.0 each data source had a panel.
...And 5 more matches

Supporting private browsing mode - Archive of obsolete content
this interface is deprecated since firefox 20, and will probably be completely removed in firefox 21.see supporting per-window private browsing for details.
... firefox 3.5 introduced private browsing mode, in which potentially private information is not recorded.
... detecting whether private browsing mode is permanent requires gecko 2.0(firefox 4 / thunderbird 3.3 / seamonkey 2.1) firefox 4 added support for having private browsing mode permanently enabled.
...And 5 more matches

Modifying the Default Skin - Archive of obsolete content
« previousnext » as of firefox 69, you must set the toolkit.legacyuserprofilecustomizations.stylesheets preference to true in about:config in order to load userchrome.css or usercontent.css files.
... this documentation has not been fully updated for firefox quantum.
... support for the userchrome.css file and any of its elements described below are not guaranteed in future versions of firefox.
...And 5 more matches

textbox - Archive of obsolete content
prior to gecko 1.9 (firefox 3), the script code would execute in the context of the anonymous html <input> element inside the textbox binding.
... from gecko 1.9 to gecko 12.0 (firefox 12.0 / thunderbird 12.0 / seamonkey 2.9), the script code would actually execute twice, once in the context of the anonymous html <input> element and once in the context of the <textbox> element itself.
... as of gecko 13.0 (firefox 13.0 / thunderbird 13.0 / seamonkey 2.10), the script code only runs in the context of the <textbox> element, matching the behavior of all other event handlers.
...And 5 more matches

XULRunner Hall of Fame - Archive of obsolete content
slimerjs slimerjs is a xulrunner application that can be launched with firefox, allowing to execute an external javascript script which can manipulate web content.
... sqlite manager manage all your sqlite databases using this lightweight extension for firefox, thunderbird, seamonkey, songbird, komodo etc.
... zotero reference manager with firefox, chrome, and safari integration.
...And 5 more matches

2006-10-20 - Archive of obsolete content
summary: mozilla.dev.apps.firefox - october 13, 2006 - october 20, 2006 announcements content filtering, manipulation, and control in firefox 3 an open invitation from myk melez to contribute to the brainstorming of new features for firefox 3 and future firefox releases.
...to contribute visit the wiki discussions i wanna make an addon for firefox a commonly asked question in many newsgroups.
... jesper kristensen pointed the requester here change download action for .rdp files on windows and os x a question regarding enabling firefox to associate .rdp files with microsoft remote desktop client so that the correct application opens the files automatically.
...And 5 more matches

Debugging on Windows
this document explains how to debug mozilla-derived applications such as firefox, thunderbird, and seamonkey on windows using the visual c++ ide.
...firefox, in general, and even in non-e10s mode, does not start the main process directly, it starts it via a launcher process.
... if you have followed the steps in building firefox for windows and have a local debug build, you can execute ./mach run --debug from the same command line.
...And 5 more matches

Tracking Protection
firefox desktop and firefox for android include built-in tracking protection.
... in private browsing windows (tabs, in firefox for android), firefox will block content loaded from domains that track users across sites.
... if blocked content is part of the page layout, users may notice layout issues where firefox blocked these loads.
...And 5 more matches

CustomizableUI.jsm
this module is only available from firefox 29 onwards.
... the customizableui.jsm javascript code module allows you to interact with customizable buttons and items in firefox's main window ui.
... it is available in the firefox window as the customizableui property on the window.
...And 5 more matches

Following the Android Toasts Tutorial from a JNI Perspective
it will use the jni.jsm module that is available in firefox for android since version 17.
... toasts do not have to be created with jni; they are exposed by the nativewindow feature on firefox for android, see toast documentation.
... java code let's start with the following java code, which invokes a toast and says "hello, firefox!".
...And 5 more matches

Index
2 application translation with mercurial android, draft, editing, firefox, lightning, localization, mercurial, seamonkey, translate, patch, thunderbird first, get the required programs to compile mozilla applications like firefox and thunderbird from build instructions.
... 7 l10n testing with xcode firefox for ios, localization once you have your l10n testing environment set up in xcode, testing your firefox on ios localization is a breeze.
... 20 localizing xliff files for ios oasis, translate, xliff, xml, ios firefox for ios uses the xliff xml-based file format to hold and transfer localization data.
...And 5 more matches

Localizing with Koala
introduction this tutorial will guide you through making a couple of changes to firefox's user interface using koala, an add-on for komodo edit created to help localizing mozilla.
... configure the application choose "firefox" as the application.
... note that you don't have to edit the location field, it automatically fills in when you check the "mercurial" checkbox: "c:\mozilla\l10n\application\firefox\3.6".
...And 5 more matches

Localizing with Mercurial
localizing current versions of firefox, thunderbird and seamonkey includes working with mercurial.
... mozilla-central contains the files for firefox nightly.
... comm-central contains the files for seamonkey and thunderbird which are not already part of firefox.
...And 5 more matches

XPCOM
this can create a difficult situation for extension developers trying to support multiple gecko versions (firefox 2 and 3, for example).creating a python xpcom componentcreating applications with mozilla already provides a tutorial for making a simple javascript or c++ component (implementing the nsisimple interface).
... here is how to make the same component in python using pyxpcom.fun with xbl and xpconnectgenerating guidsguids are used in mozilla programming for identifying several types of entities, including xpcom interfaces (this type of guids is callled iid), components (cid), and legacy add-ons—like extensions and themes—that were created prior to firefox 1.5.
... add-ons can (and should) be identified with ids of the form extensionname@organization.tld since firefox 1.5.generic factorymost xpcom factories can be very simple.
...And 5 more matches

Using COM from js-ctypes
speech synthesis example let's start with following c++ code, which invokes microsoft speech api and says "hello, firefox!" with system default voice, then wait until the speaking done.
... #include <sapi.h> int main(void) { if (succeeded(coinitialize(null))) { ispvoice* pvoice = null; hresult hr = cocreateinstance(clsid_spvoice, null, clsctx_all, iid_ispvoice, (void**)&pvoice); if (succeeded(hr)) { pvoice->speak(l"hello, firefox!", spf_default, null); pvoice->release(); } } // msdn documentation says that even if coinitalize fails, counitialize // must be called couninitialize(); return 0; } to run the code, save it as test.cpp, and run following command in the directory (needs visual studio).
... #include <sapi.h> int main(void) { if (succeeded(coinitialize(null))) { struct ispvoice* pvoice = null; hresult hr = cocreateinstance(&clsid_spvoice, null, clsctx_all, &iid_ispvoice, (void**)&pvoice); if (succeeded(hr)) { pvoice->lpvtbl->speak(pvoice, l"hello, firefox!", 0, null); pvoice->lpvtbl->release(pvoice); } } // msdn documentation says that even if coinitalize fails, counitialize // must be called couninitialize(); return 0; } to run the code, save it as test.c, and run following command in the directory.
...And 5 more matches

Plugins
important: plugins are a legacy technology that are a security and performance problem for firefox (and other browser) users.
... roadmap plugin roadmap information about the roadmap for adobe flash and other plugin support in firefox.
... roadmap highlights since firefox 52, plugins other than flash are not loaded by firefox.
...And 5 more matches

BudgetService - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbudgetservice experimentaldeprecatednon-standardchrome full support 55edge full support ≤79firefox ?
... webview android full support 55chrome android full support 55firefox android ?
... samsung internet android full support 6.0getbudget experimentaldeprecatednon-standardchrome full support 55edge full support ≤79firefox ?
...And 5 more matches

FederatedCredential - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfederatedcredential experimentalchrome full support 51edge full support ≤79firefox ?
... webview android full support 51chrome android full support 51firefox android ?
... samsung internet android full support 5.0federatedcredential() constructor non-standardchrome full support 51edge full support ≤79firefox ?
...And 5 more matches

FileSystemDirectoryEntry - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfilesystemdirectoryentry experimentalchrome full support 8alternate name full support 8alternate name alternate name uses the non-standard name: directoryentryedge ful...
...l support 79prefixed full support 79prefixed prefixed implemented with the vendor prefix: webkitfirefox full support 50ie no support noopera full support yesprefixed full support yesprefixed prefixed implemented with the vendor prefix: webkitsafari full support 11.1webview android full support ≤37alternate name full support ≤37alternate name alternate name uses the non-standard name: directoryentrychrome and...
...roid full support 18alternate name full support 18alternate name alternate name uses the non-standard name: directoryentryfirefox android full support 50opera android no support nosafari ios full support 11.3samsung internet android full support yesprefixed full support yesprefixed prefixed implemented with the vendor prefix: webkitcreatereader experimentalchrome full support 13edge full support 7...
...And 5 more matches

Online and offline events - Web APIs
this property is updated whenever the user switches into "offline mode" by selecting the corresponding menu item (file -> work offline in firefox).
... firefox 2 updates this property when switching to/from the browser's offline mode.
... firefox 41 updates this property when the os reports a change in network connectivity on windows, linux, and os x.
...And 5 more matches

animation-direction - CSS: Cascading Style Sheets
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetanimation-directionchrome full support 43 full support 43 full support 3prefixed prefixed implemented with the vendor prefix: -webkit-edge ...
... full support 12 full support 12 full support 12prefixed prefixed implemented with the vendor prefix: -webkit-firefox full support 16 full support 16 full support 49prefixed prefixed implemented with the vendor prefix: -webkit- full support 44prefixed disabled prefixed implemented with the vendor prefix: -webkit-disabled from version 44: this feature is behind the layout.css.prefixes.webkit preference (needs to be set to true).
... to change preferences in firefox, visit about:config.
...And 5 more matches

Adapting to the new two-value syntax of display - CSS: Cascading Style Sheets
firefox 70 implemented the two-value syntax for the display property, which is part of the css display module level 3.
...the example below, which will work in firefox 70 and upwards, demonstrates these values.
...if you are using firefox you can replace it with the newer display: block flow-root, which will achieve the same as the single flow-root value.
...And 5 more matches

WebAssembly.Module - JavaScript
desktopmobileserverchromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetnode.jsmodulechrome full support 57edge full support 16firefox full support 52notes full support ...
... 52notes notes disabled in the firefox 52 extended support release (esr).ie no support noopera full support 44safari full support 11webview android full support 57chrome android full support 57firefox android full support 52notes full support 52notes notes disabled in the firefox 52 extended support release (esr).opera android full support 43safari ios full support 11samsung internet android ...
... full support 7.0nodejs full support 8.0.0module() constructorchrome full support 57edge full support 16firefox full support 52notes full support 52notes notes disabled in the firefox 52 extended support release (esr).ie no support noopera full support 44safari full support 11webview android full support 57chrome android full support ...
...And 5 more matches

Communicating With Other Scripts - Archive of obsolete content
page scripts if a page includes its own scripts using <script> tags, either embedded in the page or linked to it using the src attribute, there are a couple of ways a content script can communicate with it: using the dom postmessage() api using custom dom events using the dom postmessage api note that before firefox 31 code in content scripts can't use window to access postmessage() and addeventlistener() and instead must use document.defaultview.
... see the section below on using postmessage() before firefox 31.
... </script> <button onclick="sendmessage()">send message</button> </body> </html> finally, the content script "listen.js" uses window.addeventlistener() to listen for messages from the page script: // listen.js window.addeventlistener('message', function(event) { console.log(event.data); // message from page script console.log(event.origin); }, false); using postmessage() before firefox 31 if your add-on is running in a version of firefox before firefox 31, then your content script can't access the postmessage() or addeventlistener() apis using window, but must access them using document.defaultview instead.
...And 4 more matches

widget - Archive of obsolete content
deprecated in firefox 29 and removed in firefox 38.
... the widget api is deprecated from firefox 29 onwards.
... create a simple user interface for an add-on in firefox's add-on bar.
...And 4 more matches

Storing annotations - Archive of obsolete content
deprecated in firefox 29 and removed in firefox 38.
... warning: this tutorial relies on the since-removed widget api and no longer works with firefox.
... the widget api is deprecated from firefox 29 onwards.
...And 4 more matches

JavaScript Client API - Archive of obsolete content
this api is available in mozilla-based products that use sync, such as firefox desktop.
... please note that usage of the sync apis is governed by a terms of service: by accessing or using the firefox sync apis in connection with the development of your own client software to access the firefox sync services (a “third party client”), you acknowledge that you will need to install and use a local version of the firefox sync server for multiple account testing and that any use of mozilla’s hosted firefox sync services is subject to mozilla’s firefox sync terms of service at https://services.mozilla.com/tos/.
... further, you agree (a) to maintain and link to (including on websites from which your third party client may be downloaded) a separate, conspicuous, and reasonably detailed privacy policy detailing how data collected or transmitted by your third party client is managed and protected; (b) that your third party client will only store data in encrypted form on the firefox sync servers operated by mozilla; (c) that you and your third party client will use the firefox sync apis solely for their intended purpose; (d) that your third party client will not hide or mask its identity as it uses the services and/or firefox sync apis, including by failing to follow required identification conventions; and (e) that you and your third party client will not use the firefox sync apis for any application or se...
...And 4 more matches

Creating toolbar buttons (Customize Toolbar Window) - Archive of obsolete content
this article explains how to add a toolbar button to a toolkit application (such as firefox, thunderbird, or kompozer) using overlays.
... we assume that you're also familiar with the basics of creating firefox extensions and have the hello world extension working.
...the dimensions of the icons in various applications for both modes are summarized in the following table (feel free to add information about other applications): application (theme name) big icon size small icon size firefox 1.0 (winstripe) 24x24 16x16 thunderbird 1.0 (qute) 24x24 16x16 the stylesheet to set the image for your toolbar button, use the following css rules: /* skin/toolbar-button.css */ #myextension-button { list-style-image: url("chrome://myextension/skin/btn_large.png"); } toolbar[iconsize="small"] #myextension-button { list-style-image: url("chrome://myextension...
...And 4 more matches

toolbox - Archive of obsolete content
the firefox browser does not have grippies so toolbars cannot be collapsed and expanded.
... customtoolbarcount firefox only type: integer the number of custom toolbars currently within the toolbox.
... palette firefox only type: element the toolbarpalette within the toolbox.
...And 4 more matches

Getting started with XULRunner - Archive of obsolete content
given that firefox, thunderbird, and multiple other applications are written using the platform, it's a safe bet that it can be used to build a basic application.
...one way to achieve this is to run the following script everytime you want to install a new version: firefox_version=`grep -po "\d{2}\.\d+" /usr/lib/firefox/platform.ini` arch=`uname -p` xurl=https://ftp.mozilla.org/pub/mozilla.org/xulrunner/releases/$firefox_version/runtimes/xulrunner-$firefox_version.en-us.linux-$arch.tar.bz2 cd /opt sudo sh -c "wget -o- $xurl | tar -xj" sudo ln -s /opt/xulrunner/xulrunner /usr/bin/xulrunner sudo ln -s /opt/xulrunner/xpcshell /usr/bin/xpcshell you could also save t...
... note: if you are using firefox build from ubuntuzilla repository, replace /usr/lib/firefox/platform.ini with /opt/firefox/platform.ini.
...And 4 more matches

2006-10-13 - Archive of obsolete content
summary: mozilla.dev.apps.firefox - october 6, 2006 - october 13, 2006 announcements firefox vista compatible and versioning heads up robert strong describes the compatibility between windows vista and firefox, also about the versioning change.
... annoying firefox 2 save dialog instead of open/save ones.
...it's suggested that its a os problem in the desktop theme, as opposed to problem with firefox.
...And 4 more matches

Scratchpad - Archive of obsolete content
scratchpad is deprecated as of firefox 70 (bug 1565380), and will be removed as of firefox 72 (bug 1519103).
... as an alternative, starting in firefox 71, you can use the multi-line mode of the javascript console input.
... opening scratchpad in the toolbox new in firefox 47.
...And 4 more matches

Browser Feature Detection - Archive of obsolete content
this article has generally never been more than a way to show off firefox web compatibility, rather than something truly informative in a broader sense.
... it is clear from these test results that netscape 7.0x and mozilla firefox have the greatest dom support although internet explorer, safari, and opera have sufficient dom css 1 and dom level 1 & 2 document property and method support to enable cross browser web development.
... test summary standard netscape 7.0x firefox 1.5 safari 2 opera 7 / 8.5-9.0 internet explorer 6 / 7 dom core 1 100% 100% 100% 75% / 91% 75% / 75% dom core 2 100% 100% 100% 70% / 94% 58% / 58% dom 1 html 100% 100% 100% 100% / 100% 100% / 100% dom css 1 100% 100% 100% 100% / 100% 96% / 96% dom css 2 100% 98% 67% 71% / 83% 38% / 42% test results cross reference dom core level 1 support for properties/methods in document name firefox 1.5 ie 6 & 7 opera 8.54 - 9.01 document.doctype true true true document.implementation true true true document.documentelement true true true...
...And 4 more matches

The HTML5 input types - Learn web development
see the firefox for android keyboard screenshot below for an example: note: you can find examples of the basic text input types at basic input examples (see the source code also).
... the below screenshots show a non-empty search field in firefox 71, safari 13, and chrome 79 on macos, and edge 18 and chrome 79 on windows 10.
... the following firefox for android keyboard screenshot provides an example: due to the wide variety of phone number formats around the world, this type of field does not enforce any constraints on the value entered by a user (this means it may include letters, etc.).
...And 4 more matches

Introduction to cross browser testing - Learn web development
the site should work entirely in the last few versions of the most popular desktop and mobile (ios, android, windows phone) browsers — this should include chrome (and opera as it is based on the same rendering engine as chrome), firefox, ie/edge, and safari.
...to start with, you should make sure there are no general issues with your code that are stopping your feature from working: test it in a couple of stable browsers on your system, like firefox, safari, chrome, or ie/edge.
...for example: try to test the latest change on all the modern desktop browsers you can — including firefox, chrome, opera, ie, edge, and safari on desktop (mac, windows, and linux, ideally).
...And 4 more matches

Index
found 689 pages: # page tags and summary 1 add-ons add-ons, extension, extensions, landing, mozilla add-ons allow developers to extend and modify the functionality of firefox.
... 675 creating an appealing add-on listing add-ons, beginner, guide, webextension, publishing there are two essential steps to getting people to use your add-on: they need to discover your add-on and open the listing page, then the listing page needs to encourage them to click the add to firefox button.
... 676 index add-ons, glossary, guide, index found 689 pages: 677 signing and distributing your add-on add-ons, extensions, webextensions, distribution, publication, reviews, signing add-ons need to be signed before they can be installed into release and beta versions of firefox.
...And 4 more matches

mach
mach (german for to make) is a program via the "command-line interface" to help developers perform installation tasks such as installing firefox from its c++ source code.
...$ cd objdir-firefox $ mach build adding mach to your shell's search path if you add mach to your path (by modifying the path environment variable to include your source directory, or by copying mach to a directory in the default path like /usr/local/bin) then you can type mach anywhere in your source directory or your objdir.
... note: mach tab completion will not work when running mach in a source directory older than firefox 24.
...And 4 more matches

Developer guide
build instructions how to build firefox, thunderbird, seamonkey, or other mozilla applications.
... managing multiple profiles when working with prerelease versions of firefox, it's often helpful to have multiple firefox profiles, such as one for each channel, or for different kinds of testing.
... customizing firefox information about creating customized versions of firefox.
...And 4 more matches

How to get a process dump with Windows Task Manager
(to get a process dump for thunderbird or some other product, substitute the product name where ever you see firefox in these instructions.) caution the memory dump that will be created through this process is a complete snapshot of the state of firefox when you create the file, so it contains urls of active tabs, history information, and possibly even passwords depending on what you are doing when the snapshot is taken.
... a firefox nightly or release you need a firefox version for which symbols are available from the mozilla symbol server.
... you can use any official nightly build or released version of firefox from mozilla.
...And 4 more matches

FxAccountsOAuthClient.jsm
the fxaccountsoauthclient.jsm javascript module provides a way for browser services to authenticate with the firefox accounts oauth server.
... components.utils.import("resource://gre/modules/fxaccountsoauthclient.jsm"); creating a new fxaccountsoauthclient new fxaccountsoauthclient(object options); method overview launchwebflow(); teardown(); attributes parameters object returns the set of parameters that initialized the firefox accounts oauth flow.
... oncomplete function gets called when the firefox accounts oauth flow successfully completes.
...And 4 more matches

Creating localizable web applications
bad: <?= _("<a href=\"https://addons.mozilla.org/firefox/downloads/latest/10900\" class=\"get-personas\" id=\"download\"><span>get personas for firefox - free</span>");?><span class="arrow"></span></a> snippet 2.
... good: <a href="https://addons.mozilla.org/firefox/downloads/latest/10900" class="get-personas" id="download"> <span><?= _("get personas for firefox - free");?></span><span class="arrow"></span> </a> snippet 3.
... <?php if($showwearthis) { ?> $(".try-button").personasbutton({ 'haspersonas':'<span><?= _("wear this");?></span><span>&nbsp;</span>', 'hasfirefox':'<span><?= _("get personas now!");?></span><span>&nbsp;</span>', 'nofirefox':'<span><?= _("get personas with firefox");?></span><span>&nbsp;</span>' }); <?php } ?> images don't put text or numbers in the images just don't do that.
...And 4 more matches

Fonts for Mozilla 2.0's MathML engine
note: these instructions are for gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) until gecko 30.0 (firefox 30.0 / thunderbird 30.0 / seamonkey 2.27).
... on android, firefox os and other platforms where the instructions above do not work: install the mathml-fonts add-on.
... this requires gecko 15.0 (firefox 15.0 / thunderbird 15.0 / seamonkey 2.12) or higher.
...And 4 more matches

GC and CC logs
generating logs from within firefox to manually generate gc and cc logs, navigate to about:memory and use the buttons under "save gc & cc logs." "save concise" will generate a smaller cc log, "save verbose" will provide a more detailed cc log.
... (the gc log will be the same size in either case.) with multiprocess firefox, you can't record logs from the content process, due to sandboxing.
... you'll need to disable sandboxing by setting moz_disable_content_sandbox=t when you run firefox.
...And 4 more matches

about:memory
about:memory is a special page within firefox that lets you view, save, load, and diff detailed measurements of firefox's memory usage.
... how to generate memory reports let's assume that you want to measure firefox's memory usage.
...once firefox's memory usage has gotten high) open a new tab and type "about:memory" into the address bar and hit "enter".
...And 4 more matches

Localization Use Cases
this article documents a few opportunities to improve the localization of gaia (the ui layer of firefox os) by using l20n.
... in slovenian, the ideal string would inflect the noun, like so: o firefoxu however, since we want the name of the browser to be stored in the browserbrandshortname entity, we can't modify it.
...browser, to give about the firefox browser.
...And 4 more matches

PKCS11 module installation
pkcs #11 modules are external modules which add to firefox support for smartcard readers, biometric security devices, and external certificate stores.
... this article covers the two methods for installing pkcs #11 modules into firefox.
... note: the information in this article is specific to firefox 3.5 and newer.
...And 4 more matches

AT APIs Support
accessible gecko gecko is a rendering engine that firefox, seamonkey, netscape and yelp use.
... examples of xul applications: firefox - web-browser thunderbird - email client seamonkey - web-browser, advanced e-mail and newsgroup client, irc chat client, and html editing made simple sunbird - cross-platform calendar application kompozer - a complete web authoring system for linux desktop, microsoft windows and macintosh users to rival programs like frontpage and dreamweaver.
...firefox extensions) gecko version for firefox and all other gecko-based products: this documentation applies to up-to-date product builds based on gecko 1.9.2 -- currently not available on official releases.
...And 4 more matches

XForms Accessibility
assistive technologies api for xforms is supported starting from firefox 3 (gecko 1.9).
...these are either downloading latest build of firefox or building it yourself.
... downloading builds notion: xforms is no longer distributed with firefox build.
...And 4 more matches

Components.utils.exportFunction
allowcallbacks: deprecated/redundant from firefox 34.
...this option is new in firefox 33.
... from firefox 34 onwards this option has no effect: the exported function is always able to accept callbacks as arguments.
...And 4 more matches

nsIAppShell
inherits from: nsisupports last changed in gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) method overview void create(inout int argc, inout string argv); obsolete since gecko 1.9 void dispatchnativeevent(in prbool arealevent, in voidptr aevent); obsolete since gecko 1.9 void exit(); void favorperformancehint(in boolean favorperfoverstarvation, in unsigned long starvationdelay); void getnativeevent(in prboolref arealevent, in voidptrref aevent); obsolete since gecko 1.9 void listentoeventqueue(in nsieventqueue aqueue, in prbool alisten); obsolete since gecko 1.9 void resumenative(); void run();...
... methods create() obsolete since gecko 1.9 (firefox 3) creates an application shell.
... dispatchnativeevent() obsolete since gecko 1.9 (firefox 3) after event dispatch execute app specific code.
...And 4 more matches

nsIBrowserHistory
inherits from: nsiglobalhistory2 last changed in gecko 22.0 (firefox 22.0 / thunderbird 22.0 / seamonkey 2.19) implemented by: @mozilla.org/browser/nav-history-service;1.
... methods addpagewithdetails() obsolete since gecko 15.0 (firefox 15.0 / thunderbird 15.0 / seamonkey 2.12) note: this method was removed in gecko 15.0.
... markpageasfollowedlink() obsolete since gecko 22.0 (firefox 22.0 / thunderbird 22.0 / seamonkey 2.19) note: this method was moved to another interface in gecko 22.0.
...And 4 more matches

nsIDBFolderInfo
inherits from: nsisupports last changed in gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) implemented by: ?????????????????????????????????????.
...ptions thrown missing exception missing description getcharacterset() void getcharacterset( out acstring charset, out boolean overriden ); parameters charset missing description overriden missing description exceptions thrown missing exception missing description getcharactersetoverride() obsolete since gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) void getcharactersetoverride( out boolean charactersetoverride ); parameters charactersetoverride missing description exceptions thrown missing exception missing description getcharptrcharacterset() string getcharptrcharacterset(); parameters none.
...turn value missing description exceptions thrown missing exception missing description getcharptrproperty() string getcharptrproperty( in string propertyname ); parameters propertyname missing description return value missing description exceptions thrown missing exception missing description native code only!getlocale obsolete since gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0)this feature is obsolete.
...And 4 more matches

nsIScrollable
inherits from: nsiscrollable last changed in gecko 29.0 (firefox 29.0 / thunderbird 29.0 / seamonkey 2.26) method overview long getcurscrollpos(in long scrollorientation); obsolete since gecko 29.0 long getdefaultscrollbarpreferences(in long scrollorientation); void getscrollbarvisibility(out boolean verticalvisible, out boolean horizontalvisible); void getscrollrange(in long scrollorientation, out long minpos, out long maxpos); obsolete since gecko 29.0 void setcurscrollpos(in long scrollorientation, in long curpos); obsolete since gecko...
... methods getcurscrollpos() obsolete since gecko 29.0 (firefox 29.0 / thunderbird 29.0 / seamonkey 2.26) long getcurscrollpos( in long scrollorientation ); parameters scrollorientation an integer representing the orientation of the scrollbar.
... getscrollrange() obsolete since gecko 29.0 (firefox 29.0 / thunderbird 29.0 / seamonkey 2.26) void getscrollrange( in long scrollorientation, out long minpos, out long maxpos ); parameters scrollorientation an integer representing the orientation of the scrollbar.
...And 4 more matches

Working with Multiple Versions of Interfaces
the problem in this short note we illustrate how one can update an xpcom module in order for it to work in both firefox 2 and firefox 3, even if the interfaces have changed in the interim.
...accessiblefor(node, getter_addrefs(accnode)); if(ns_failed(rv)){ return self; } void *wh = null; nscomptr<nsiaccessibledocument> accdocnode; accdocnode = do_queryinterface(accnode, &rv); if(ns_failed(rv)){ return self; } rv = accdocnode->getwindowhandle(&wh); if(ns_succeeded(rv)){ self = static_cast<hwnd>(wh); } return self; } this approach worked, as is, for versions as early as firefox 1.5.
... the problem arises when one tries to run an extension built with the latest sdk in an older version of firefox, say firefox 2.
...And 4 more matches

Zombie compartments
they can be caused by bugs in firefox itself, or by bugs in firefox add-ons.
... compartments firefox’s javascript memory is segregated into zones and compartments.
... firefox’s own javascript code also gets one or more compartments and so do add-on scripts.
...And 4 more matches

Standard OS Libraries
wms on ubuntu work a little differently but we'll revisit this topic later in this article (did you know they have a *special* firefox build for ubuntu?).
... gtk+ is the framework used under firefox (and other mozilla applications like thunderbird).
...firefox is officially supported only for gtk+ at the moment, therefore gtk+ is required for firefox to run.
...And 4 more matches

FileSystemFlags - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfilesystemflags experimentalchrome full support 13prefixed full support 13prefixed prefixed implemented with the vendor prefix: webkitedge full support ...
... ≤79prefixed full support ≤79prefixed prefixed implemented with the vendor prefix: webkitfirefox full support 50ie no support noopera no support nosafari no support nowebview android full support yesprefixed full support yesprefixed prefixed implemented with the vendor prefix: webkitchrome android full support yesprefixed full support yesprefixed prefixed implemented with the ven...
...dor prefix: webkitfirefox android full support 50opera android no support nosafari ios no support nosamsung internet android full support yesprefixed full support yesprefixed prefixed implemented with the vendor prefix: webkitcreate experimentalchrome full support 13prefixed full support 13prefixed prefixed implemented with the vendor prefix: webkitedge full support ≤79prefixed full support ≤...
...And 4 more matches

GamepadEvent - Web APIs
working draft initial definition browser compatibility desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetgamepadeventchrome full support 35 full support 35 no support 21 — 34prefixed prefixed implemented with the vendor prefix: webkitedge full s...
...upport ≤18firefox full support 29 full support 29 no support 24 — 28disabled disabled from version 24 until version 28 (exclusive): this feature is behind the dom.gamepad.enabled preference (needs to be set to true).
... to change preferences in firefox, visit about:config.ie no support noopera full support 22 full support 22 no support 15 — 21prefixed prefixed implemented with the vendor prefix: webkitsafari full support 10.1webview android no support nochrome android full support yesfirefox android full support 32opera android full support 22 full support 22 no support ...
...And 4 more matches

Using IndexedDB - Web APIs
also, indexeddb storage in browsers' privacy modes only lasts in-memory until the incognito session is closed (private browsing mode for firefox and incognito mode for chrome, but in firefox this is not implemented yet as of april 2020 so you can't use indexeddb in firefox private browsing at all).
... note: as of firefox 40, indexeddb transactions have relaxed durability guarantees to increase performance (see bug 1112702.) previously in a readwrite transaction idbtransaction.oncomplete was fired only when all data was guaranteed to have been flushed to disk.
... in firefox 40+ the complete event is fired after the os has been told to write the data but potentially before that data has actually been flushed to disk.
...And 4 more matches

ScreenOrientation - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetscreenorientationchrome full support 38edge full support 79firefox full support 43ie no support ...
... noopera full support 25safari no support nowebview android full support 38chrome android full support 38firefox android full support 43opera android full support 25safari ios no support nosamsung internet android full support 3.0anglechrome full support 38edge full support 79firefox full support 43ie ...
... no support noopera full support 25safari no support nowebview android full support 38chrome android full support 38firefox android full support 43opera android full support 25safari ios no support nosamsung internet android full support 3.0lockchrome full support 38edge full support 79firefox full suppo...
...And 4 more matches

Screen Orientation API - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetscreenorientationchrome full support 38edge full support 79firefox full support 43ie no support ...
... noopera full support 25safari no support nowebview android full support 38chrome android full support 38firefox android full support 43opera android full support 25safari ios no support nosamsung internet android full support 3.0anglechrome full support 38edge full support 79firefox full support 43ie ...
... no support noopera full support 25safari no support nowebview android full support 38chrome android full support 38firefox android full support 43opera android full support 25safari ios no support nosamsung internet android full support 3.0lockchrome full support 38edge full support 79firefox full suppo...
...And 4 more matches

Using Service Workers - Web APIs
note: as of firefox 44, when appcache is used to provide offline support for a page a warning message is now displayed in the console advising developers to use service workers instead (bug 1204581.) service workers should finally fix these issues.
...if however you find that demo code is not working in your installed versions, you might need to enable a pref: firefox nightly: go to about:config and set dom.serviceworkers.enabled to true; restart browser.
...this is really the same kind of procedure as installing a native or firefox os app — making everything available for use offline.
...And 4 more matches

Accessibility Information for Web Authors - Accessibility
you can install a custom wave toolbar in firefox for a quick, easy and convenient evaluation of web pages directly within firefox.
... you can also add a wave bookmarklet in firefox or even wave direct links for checking a webpage.
... html advanced validator (firefox extension) by marc gueury this html validator (based on w3c tidy and on opensp for sgml validation) is a powerful, versatile, extended html validator.
...And 4 more matches

aspect-ratio - CSS: Cascading Style Sheets
formal definition initial valueautoapplies toall elements except inline boxes and internal ruby or table boxesinheritednocomputed valueas specifiedanimation typediscrete formal syntax auto | <ratio> examples mapping width and height to aspect-ratio firefox has added an internal aspect-ratio property (in version 69 onwards) that applies to replaced elements and other related elements that accept width and height attributes.
... in firefox, the internal stylesheet rule looks like this: img, input[type="image"], video, embed, iframe, marquee, object, table { aspect-ratio: attr(width) / attr(height); } specifications specification status comment css box sizing module level 4the definition of 'aspect-ratio' in that specification.
... desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetaspect-ratio experimentalchrome partial support 79notes partial support 79notes notes chrome 79 adds internal support only for mapped valuesedge partial support 79notes partial support 79notes notes edge 79 adds internal support only for mapped valuesfirefox ...
...And 4 more matches

Writing Web Audio API code that works in every browser - Developer guides
you probably have already read the announcement on the web audio api coming to firefox, and are totally excited and ready to make your until-now-webkit-only sites work with firefox, which uses the unprefixed version of the spec.
...furthermore, as a result of the spec being still in flux, some browsers use deprecated properties and method names that are not present in standards-compliant browsers: safari uses the old method names, firefox uses the new ones, and chrome and opera use both.
... in addition, not all features of web audio are already implemented in firefox yet.
...And 4 more matches

Making content editable - Developer guides
note: in firefox 63 beta/dev edition, some of the rich-text editing features have been disabled by default, for better cross-browser compatibility.
...see bug 1449564 and firefox-specific html editing ui has been deprecated for additional details.
...for example, even something as simple as what happens when you press enter/return to create a new line of text inside an editable element was handled differently across the major browsers (firefox inserted <br> elements, ie/opera used <p>, chrome/safari used <div>).
...And 4 more matches

Error.prototype.stack - JavaScript
(note that the error object also possesses the filename, linenumber and columnnumber properties for retrieving these from the error thrown (but only the error, and not its trace).) note that this is the format used by firefox.
... argument values in the stack: prior to firefox 14, the function name would be followed by the argument values converted to string in parentheses immediately before the at (@) sign.
... while an object (or array, etc.) would appear in the converted form "[object object]", and as such could not be evaluated back into the actual objects, scalar values could be retrieved (though it may be — it is still possible in firefox 14 — easier to use arguments.callee.caller.arguments, as could the function name be retrieved by arguments.callee.caller.name).
...And 4 more matches

WebAssembly.Memory - JavaScript
desktopmobileserverchromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetnode.jsmemorychrome full support 57edge full support 16firefox full support 52notes full support ...
... 52notes notes disabled in the firefox 52 extended support release (esr).ie no support noopera full support 44safari full support 11webview android full support 57chrome android full support 57firefox android full support 52notes full support 52notes notes disabled in the firefox 52 extended support release (esr).opera android full support 43safari ios full support 11samsung internet android ...
... full support 7.0nodejs full support 8.0.0memory() constructorchrome full support 57edge full support 16firefox full support 52notes full support 52notes notes disabled in the firefox 52 extended support release (esr).ie no support noopera full support 44safari full support 11webview android full support 57chrome android full support ...
...And 4 more matches

Codecs used by WebRTC - Web media technologies
mandatory video codecs codec name profile(s) browser compatibility vp8 — chrome, edge, firefox, safari (12.1+) avc / h.264 constrained baseline (cb) chrome (52+), edge, firefox[1], safari [1] firefox for android 68 and later do not support avc (h.264) anymore.
... this is due to a change in google play store requirements that prevent firefox from downloading and installing the openh264 codec needed to handle h.264 in webrtc connections.
... other video codecs codec name profile(s) browser compatibility vp9 — chrome (48+), firefox vp8 vp8, which we describe in general in the main guide to video codecs used on the web, has some specific requirements that must be followed when using it to encode or decode a video track on a webrtc connection.
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page-mod - Archive of obsolete content
= require("sdk/self").data; var pagemod = require("sdk/page-mod"); pagemod.pagemod({ include: "*.mozilla.org", contentscriptfile: data.url("my-script.js") }); var data = require("sdk/self").data; var pagemod = require("sdk/page-mod"); pagemod.pagemod({ include: "*.mozilla.org", contentscriptfile: [data.url("jquery-1.7.min.js"), data.url("my-script.js")] }); from firefox 34, you can use "./my-script.js" as an alias for self.data.url("my-script.js").
...it will not attach scripts to add-on panels, page-workers, sidebars, or firefox hidden windows.
...the exclude option is new in firefox 32.
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ui - Archive of obsolete content
actionbutton an action button is a button in the main firefox toolbar.
... attaching panels to buttons is only supported from firefox 30 onwards.
... from firefox 30 onwards, you can attach panels to toggle buttons, by passing the button into the panel's constructor or its show() method: frame a frame enables you to create an html iframe, using bundled html, css and javascript.
...And 3 more matches

ui/toolbar - Archive of obsolete content
experimental add a toolbar to the firefox user interface.
...toolbars get a close button at the right-hand side, and users can show or hide the toolbar using the firefox "view/toolbars" menu, alongside built-in toolbars like the bookmarks toolbar.
...this appears as the name of the toolbar in the firefox "toolbars" menu.
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Miscellaneous - Archive of obsolete content
var osstring = services.appinfo.os; detecting the host application and version // get the name of the application running us services.appinfo.name; // returns "firefox" for firefox services.appinfo.version; // returns "2.0.0.1" for firefox version 2.0.0.1 retrieving the version of an extension as specified in the extension's install.rdf components.utils.import("resource://gre/modules/addonmanager.jsm"); addonmanager.getaddonbyid("extension-guid@example.org", function(addon) { // this is an asynchronous callback function that might not be called immediately alert("my extension...
...'s version is " + addon.version); }); restarting firefox/thunderbird/seamonkey_2.0 for firefox 3 see onwizardfinish around here: http://mxr.mozilla.org/seamonkey/sou...pdates.js#1639 for firefox 2 see around here: http://mxr.mozilla.org/mozilla1.8/so...pdates.js#1631 bug 338039 tracks improving this situation by providing a simple method to restart the application.
... example for firefox: services.startup.quit(services.startup.eforcequit|services.startup.erestart); mouse and keyboard detecting mouse wheel events when scrolling the mouse wheel on an element, the dommousescroll event fires.
...And 3 more matches

Adding Events and Commands - Archive of obsolete content
please read appendix a for recommendations on how to use the load event to initialize your add-on without having a negative performance impact on firefox.
...also keep in mind that there are 2 drag and drop apis, the newest (and preferred) one introduced in firefox 3.5.
...this is because it would be very insecure to have a website js controlling the behavior of firefox and running javascript code with chrome privileges.
...And 3 more matches

Adding sidebars - Archive of obsolete content
« previousnext » the sidebar in firefox is a relatively large and flexible space to add rich interfaces without requiring new windows or complicated overlays.
... the code required to add a sidebar is very simple, as explained in creating a firefox sidebar.
...keyboard shortcuts are an essential feature of firefox, and you can add your own into your extensions, which is also great.
...And 3 more matches

Appendix A: Add-on Performance - Archive of obsolete content
add-ons can have a noticeable performance impact on firefox.
... this is evident when opening a firefox profile that has many add-ons installed; some profiles can take minutes to load, which is a serious inconvenience for users that gives them a negative view of firefox.
...the firefox window will be able to load sooner and your startup code will run almost instantaneously afterward, in parallel with the loading of the homepage or the saved tab session.
...And 3 more matches

User Notifications and Alerts - Archive of obsolete content
the main disadvantage of using alerts is that support for the alerts service is not guaranteed for all platforms and firefox versions.
... support for windows has existed since firefox 2.
... for mac os x, support was added on firefox 3, and only through a third-party tool called growl.
...And 3 more matches

Security best practices in extensions - Archive of obsolete content
this is written from the perspective of a firefox extension, but most items apply to extensions for other mozilla-based applications such as thunderbird or seamonkey.
...for example, if you load a chrome url, this means the content has been registered with firefox and has full access.
... the sidebar: a use case the sidebar in firefox is designed to hold both chrome (privileged) content and web (nonprivileged) content, the latter being in the form of web pages.
...And 3 more matches

Monitoring downloads - Archive of obsolete content
try to avoid using it.this interface is deprecated as of firefox 26.
... firefox 3 makes it easier than ever to monitor the status of downloads.
... although it was possible to do so in previous versions of firefox, it was previously only possible for one observer to do so at a time.
...And 3 more matches

Remote debugging - Archive of obsolete content
the crash victim should at least know how to run a debugger, if not how to use it, and should have a debug build of firefox handy.
...the developer trusts that his time is not being wasted: the crash is a real bug in firefox.
...core dumps on mac and linux to generate a core dump on mac, type "ulimit -c unlimited", run firefox from the command line, and make firefox crash.
...And 3 more matches

Venkman Introduction - Archive of obsolete content
a powerful new tool is available for web developers for use in many mozilla-based products, including firefox, mozilla suite and netscape 7.x.
... starting the debugger the javascript debugger is automatically pre-installed in mozilla 1.x but must be installed separately in firefox and other gecko-based products, such as thunderbird and netscape 7.x.
... fortunately, the xpinstall technology makes it possible to install new application modules in firefox by just clicking a hyperlink.
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textbox (Toolkit autocomplete) - Archive of obsolete content
toolkit applications (such as firefox) use a different autocomplete mechanism than the mozilla suite.
... note: for firefox 12 and above, this event handler must be set as an initial attribute.
... note: for firefox 12 and above, this event handler must be set as an initial attribute.
...And 3 more matches

Introduction - Archive of obsolete content
there are several ways you can use xul: firefox extension an extension adds functionality to the browser itself, often in the form of extra toolbars, context menus, or customizations to the browser's user interface.
... this is done using a feature of xul called an overlay, which allows the ui provided from one source, in this case, the firefox browser, to be merged together with the ui from the extension.
... remote xul application you could also just place xul code on a web server and open it in firefox, as you would any other web page, however this is discouraged and was disabled in firefox 8.
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2006-10-20 - Archive of obsolete content
summary: mozilla.dev.builds - october 14th to october 20th 2006 linux reference platform 1.8.1 october 18th: marcus is wondering about the linux platform that is currently used to compile both public releases of firefox and xulrunner.
... marcus claims that when he builds firefox using centos he encounters crashes (segmentation faults) under linux distributions such as gentoo, suse and fedora.
... adding extension to extensions/ folder originally posted on oct 19th: christopher finke is currently learning how to compile firefox.
...And 3 more matches

2006-10-27 - Archive of obsolete content
firefox 2 wont build under solaris 10 x86 october 26: alex was trying to build firefox 2 source on a solaris 10 x86 machine but was not successful with the build.
... he has already built firefox 1.5.0.7 on the same machine with no problems.
... the following is his configuration script that he used to build firefox 2 on solaris.
...And 3 more matches

Logging Multi-Process Plugins - Archive of obsolete content
when multi-process plugins are enabled, firefox has the ability to dump additional information about interactions between the browser and a plugin.
...run firefox in a custom environment to enable this special logging mode.
...windows make sure firefox is not running.
...And 3 more matches

Back to the Server: Server-Side JavaScript On The Rise - Archive of obsolete content
spidermonkey on the other hand is the javascript engine (written in c) in the highly popular mozilla firefox browser.
...in addition, the jaxer “ajax server” (a project i work on at aptana) is an example of ssjs that uses not only spidermonkey, but also embeds the entire firefox browser engine in the application server such that you can do server-side dom manipulation and other ajaxy things server-side that rhino was not built to do.
...spidermonkey is the code name for the first ever javascript engine, an open source c implementation which can be found embedded in leading software products such as mozilla firefox, adobe acrobat, and aptana jaxer.
...And 3 more matches

Accessibility and Mozilla
they also define a list of possible object states, such as focused, read-only, checked, etc.accessibility features in firefoxfirefox works with popular screen readers, with the best support currently coming from gw micro's window-eyes 5.5.
...in recent articles from both afb's access world and nfb's voice of the nation's blind, reviewers found no significant roadblocks in moving to firefox from internet explorer for screen reader users.
...however, many of the concepts were also used during the development of firevox, an at using iaccessible2.accessible toolkit checklistplease contact the mozilla accessibility community with questions or feedback.csun firefox materialsfirefox 1.5 is a fast, free, standards compliant web browser which is rapidly gaining recognition for its fresh, streamlined approach to browsing the web.
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Theme concepts
themes developed using the webextensions api in firefox enable you to change the look of the browser by adding images to the header area of the firefox browser; this is the area behind the menu bar, toolbars, address bar, search bar, and tab strip.
...additionally, firefox color can be used to preview customizations to the browser's theme with options to share and export a theme.
... static theme approaches there are two approaches you can take to theming the header area of firefox: using a single image or using multiple images.
...And 3 more matches

Debugging JavaScript
browser console the browser console lets you see all javascript errors and logging in the browser, including from firefox code.
... you can also start the browser console when you launch firefox, by launching firefox from the command line and passing --jsconsole as a flag: /path/to/firefox --jsconsole log to the browser console using the standard console api after importing console.jsm: let console = (cu.import("resource://gre/modules/console.jsm", {})).console; console.log("hello from firefox code"); error console this is obsolete and is no longer enabled in firefox by default.
... browser debugger (built-in) on firefox 19 or later, it's possible to use the built-in js debugger on the browser itself.
...And 3 more matches

Message manager overview
in multiprocess firefox there are (at least) two processes: the chrome process, also called the parent process, runs the browser ui (chrome) code and code inserted by extensions one or more content processes, also called child processes.
...from firefox 38 onwards, they also enable code running in the parent process to load process scripts into the child process.
... frame message managers in multiprocess firefox, when chrome code needs to interact with web content, it needs to: factor the code that needs direct access to content into separate scripts, which are called "frame scripts" use a frame message manager to load these frame scripts into the content process use the frame message manager api to communicate with the frame script some older articles on multiprocess firefox and the message manager might refer to "content scripts" instead of "frame scripts".
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Message manager overview
in the initial version of multiprocess firefox there are two processes: the chrome process, also called the parent process, runs the browser ui (chrome) code and code inserted by extensions the content processes, also called the child processes, run all web content.
...from firefox 38 onwards, they also enable code running in the parent process to load process scripts into the child process.
... frame message managers in multiprocess firefox, when chrome code needs to interact with web content, it needs to: factor the code that needs direct access to content into separate scripts, which are called "frame scripts" use a frame message manager to load these frame scripts into the content process use the frame message manager api to communicate with the frame script some older articles on multiprocess firefox and the message manager might refer to "content scripts" instead of "frame scripts", but this ...
...And 3 more matches

FxAccountsProfileClient.jsm
the fxaccountsprofileclient.jsm javascript module provides a way to fetch firefox accounts profile information.
... the modules uses the firefox profiler server api.
...fxaccountsprofileclient fxaccountsprofileclient( object options string serverurl, string token ); parameters serverurl - firefox profile server url.
...And 3 more matches

L10n testing with xcode
setting up your l10n testing environment once you have your l10n testing environment set up in xcode, testing your firefox on ios localization is a breeze.
... follow the cloning and building instructions for firefox on ios.
...you're ready to test your localization of firefox on ios.
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Localization content best practices
use proper plural forms firefox supports proper plural forms.
... as a native english speaker, you might find it natural to use delete-cookie = delete cookie delete-cookies = delete cookies in firefox this should be # localization note (delete-cookies): semi-colon list of plural forms.
... # see: http://developer.mozilla.org/en/docs/localization_and_plurals # #1 is the number of cookies to delete # example: delete-cookies = delete #1 cookie;delete #1 cookies important: always include the localization note with this format if you use a plural form in firefox.
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Localizing XLIFF files for iOS
firefox for ios uses the xliff xml-based file format to hold and transfer localization data.
...most translation tools support the xliff standard, making localizing the xliff files for firefox for ios easy to do using translation tools.
... string repository for firefox on ios the firefox-ios.xliff file is located in svn.
...And 3 more matches

powermetrics
the firefox parent process and child processes.
...wing is example output from such an invocation: *** sampled system activity (fri sep 4 17:15:14 2015 +1000) (5009.63ms elapsed) *** *** running tasks *** name id cpu ms/s user% deadlines (<2 ms, 2-5 ms) wakeups (intr, pkg idle) gpu ms/s com.apple.terminal 293 447.66 274.83 120.35 221.74 firefox 84627 77.59 55.55 15.37 2.59 91.42 42.12 204.47 plugin-container 84628 377.22 37.18 43.91 18.56 178.65 75.85 17.29 terminal 694 9.86 79.94 0.00 0.00 4.39 2.20 0.00 powermetrics 84694 1.21 31.
... 104.19 54.89 26.66 com.apple.webkit.networking 84678 26.89 58.89 0.40 0.00 1.60 0.00 0.00 safari 84676 1.56 55.74 0.00 0.00 2.59 1.40 0.00 com.apple.safari.searchhelper 84690 0.15 49.49 0.00 0.00 0.20 0.20 0.00 org.mozilla.firefox 482 76.56 124.34 63.47 0.00 firefox 84496 76.70 89.18 10.58 5.59 124.55 63.48 0.00 this sample was taken while the following programs were running: firefox beta (single process, invoked from the mac os dock, shown in the org.mozilla.firefox coalition.) firefox ni...
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A brief guide to Mozilla preferences
the values are saved to the user profile (in prefs.js), for both firefox and thunderbird.
...they are: default preference files firefox ships default preferences in several files, all in the application directory: greprefs.js - preferences shared by all applications using the mozilla platform services/common/services-common.js - preferences for some shared services code, this should arguably be included in some other file defaults/pref/services-sync.js - default preferences for firefox sync, also oddly misplaced browse...
... browser/app/profile/firefox.js - defaults specific to firefox browser/app/profile/firefox-branding.js - defaults specific to the specific kind of firefox being installed (nightly, aurora, beta, release) browser/defaults/preferences/firefox-l10n.js - defaults specific to the installed language of firefox.
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Thread Sanitizer
the version of clang you need to use depends on what firefox release you are compiling if you are building from mozilla-central, you must use clang 3.6 or later.
... clang 3.4 + tsan cannot compile firefox due to an internal compiler error; some versions of clang 3.5 packaged by linux distros do not work for the same reason.
... you can check which version of clang you have by running the command: clang -v if you are not building from mozilla-central and are building firefox 39 or earlier, you must use clang 3.3.
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Web Replay
learn more web replay allows firefox content processes to record their behavior, replay it later, and rewind to earlier states.
... getting started to enable web replay (macos and firefox nightly only), go to devtools settings and select "enable webreplay".
... this requires using the same build of firefox and a reasonably similar version of the operating system; otherwise the tab will probably crash.
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Security and the jar protocol
this article discusses security concerns with the jar: protocol, which only firefox has ever implemented for web content.
... note: support for the jar: protocol was disabled by default for use from web content beginning in firefox 45, but re-enabled again because it broke the experience of ibm inotes users.
... inotes has since been updated so that it no longer needs remote jars, so they have been disabled again in firefox 55.
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Accessing the Windows Registry Using XPCOM
support in firefox 1.5 or newer in firefox 1.5, a new api was added, nsiwindowsregkey, which provides extensive registry functionality.
...if you are writing an extension that only needs to support firefox 1.5 or newer, then you only need to read this section.
...*/ support in firefox 1.0 firefox 1.0 includes a much simpler interface to the windows registry, without most of the functionality supported in newer versions.
...And 3 more matches

How to build an XPCOM component in JavaScript
you can download an old version of xpcomviewer that works with firefox 1.5 from mozdev mirrors.
... for a new component in firefox/thunderbird/b2g if you are adding a new feature to applications in the mozilla-central repository, you can create a makefile listing the idl files and the build system will automatically generate the typelib.
... # name of the typelib xpidl_module = dom_apps # set to 1 if the module should be part of the gecko runtime common to all applications gre_module = 1 # the idl sources xpidlsrcs = \ helloworld.idl \ $(null) include $(topsrcdir)/config/rules.mk xpidl_flags += \ -i$(topsrcdir)/dom/interfaces/base \ -i$(topsrcdir)/dom/interfaces/events \ $(null) creating the component using xpcomutils in firefox 3 and later you can use import xpcomutils.jsm using components.utils.import to simplify the process of writing your component slightly.
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Components.utils.importGlobalProperties
the following strings are supported: string/object xpcom component atob blob btoa crypto css fetch file nsidomfile indexeddb nodefilter firefox 60 nsidomnodefilter obsolete since gecko 60 rtcidentityprovider textdecoder textencoder url urlsearchparams xmlhttprequest nsixmlhttprequest obsolete since gecko 60 for string/object in table without a minimum firefox version, it is not exactly known since when it was available, however it is guranteed ...
...available from firefox 28 and up.
... example components.utils.import("resource://gre/modules/devtools/console.jsm"); components.utils.importglobalproperties(["atob", "btoa"]); var encoded = btoa("hello"); console.log(encoded); // "sgvsbg8=" console.log(atob(encoded)); // "hello" alternative methods if importglobalproperties does not support the targeted firefox version, here are some alternative methods to import these objects.
...And 3 more matches

Observer Notifications
starting in firefox 3.5 components can simply register for the profile-after-change notification in nsicategorymanager.
... [nsobserverservice.cpp] topic description xpcom-startup note: an extension can no longer be registered to receive this notification in firefox 4 and later.
... app-startup note: an extension can no longer be registered to receive this notification in firefox 4 and later.
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nsIAppStartup
1.0 66 introduced gecko 1.8 inherits from: nsisupports last changed in gecko 9.0 (firefox 9.0 / thunderbird 9.0 / seamonkey 2.6) implemented by: @mozilla.org/toolkit/app-startup;1.
... createstartupstate() obsolete since gecko 1.9.1 (firefox 3.5 / thunderbird 3.0 / seamonkey 2.0) creates the initial state of the application by launching tasks specfied by "general.startup.*" prefs.
... doprofilestartup() obsolete since gecko 1.9.1 (firefox 3.5 / thunderbird 3.0 / seamonkey 2.0) starts up the profile manager with the given arguments.
...And 3 more matches

nsIContentViewer
inherits from: nsisupports last changed in gecko 10.0 (firefox 10.0 / thunderbird 10.0 / seamonkey 2.7) implemented by: ?????????????????????????????????????.
... note: prior to gecko 10.0 (firefox 10.0 / thunderbird 10.0 / seamonkey 2.7), this attribute was part of nsidocumentviewer.
... note: prior to gecko 10.0 (firefox 10.0 / thunderbird 10.0 / seamonkey 2.7), this attribute was part of nsidocumentviewer.
...And 3 more matches

nsIDocumentLoader
inherits from: nsisupports last changed in gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) implemented by: @mozilla.org/docloaderservice;1.
... methods clearparentdocloader() obsolete since gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) void clearparentdocloader(); parameters none.
... createdocumentloader() obsolete since gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) void createdocumentloader( out nsidocumentloader aninstance ); parameters aninstance destroy() obsolete since gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) void destroy(); parameters none.
...And 3 more matches

nsIHttpChannel
warning: calling setrequestheader(), setreferrerwithpolicy() or setemptyrequestheader() while visiting request headers has undefined behavior until gecko 47 (firefox 47.0 / thunderbird 47.0 / seamonkey 2.44).
... starting from gecko 48 (firefox 48.0 / thunderbird 48.0 / seamonkey 2.45) they will return a ns_error_failure.
... warning: calling setresponseheader() while visiting response headers has undefined behavior until gecko 48 (firefox 48.0 / thunderbird 48.0 / seamonkey 2.45).
...And 3 more matches

nsIXPConnect
inherits from: nsisupports last changed in gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) to access the xpconnect service, use code like this: nsresult rv; nscomptr<nsixpconnect> xpconnect = do_getservice(nsixpconnect::getcid(), &rv); if (ns_succeeded(rv)) { /* use the object */ } method overview void addjsholder(in voidptr aholder, in nsscriptobjecttracerptr atracer); native code only!
... [noscript,notxpcom] void getcaller( out jscontextptr ajscontext, out jsobjectptr aobject ); parameters ajscontext missing description aobject missing description return value missing description exceptions thrown missing exception missing description native code only!getcowforobject obsolete since gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1)this feature is obsolete.
...ctholder getwrappednativeprototype( in jscontextptr ajscontext, in jsobjectptr ascope, in nsiclassinfo aclassinfo ); parameters ajscontext missing description ascope missing description aclassinfo missing description return value missing description exceptions thrown missing exception missing description native code only!getwrapperforobject obsolete since gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1)this feature is obsolete.
...And 3 more matches

Blocking By Domain - Plugins
plugins such as flash are a performance and security problem for firefox users.
...rather than block plugins entirely, firefox is limiting the impact of plugins by blocking certain domains from using plugins.
... these blocks improve firefox security and performance and also make the click-to-activate feature more valuable to users by reducing unnecessary prompts.
...And 3 more matches

Plug-in Basics - Plugins
for example: #!/bin/bash export moz_plugin_path=/usr/lib64/mozilla/plugins exec /usr/lib64/firefox/firefox profile directory/plugins, where profile directory is the directory of the current user profile.
... /usr/lib/mozilla/plugins (the 64-bit firefox checks /usr/lib64/mozilla/plugins as well).
... /usr/lib64/firefox/plugins (for 64-bit firefox) note: firefox nightly checks a subset of these locations.
...And 3 more matches

BudgetState - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbudgetstate experimentaldeprecatednon-standardchrome full support 60edge full support ≤79firefox ?
... webview android no support nochrome android full support 60firefox android ?
... samsung internet android full support 8.0budgetat experimentaldeprecatednon-standardchrome full support 60edge full support ≤79firefox ?
...And 3 more matches

FontFaceSetLoadEvent - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfontfacesetloadevent experimentalchrome full support 35edge full support ≤79firefox full support yesie ?
... webview android no support nochrome android full support 35firefox android full support yesopera android full support 22safari ios ?
... samsung internet android full support 3.0fontfacesetloadevent() constructor experimentalchrome full support 57edge full support ≤79firefox ?
...And 3 more matches

GestureEvent - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetgestureevent non-standardchrome no support noedge no support nofirefox no support noie no support ...
... noopera no support nosafari full support 9webview android no support nochrome android no support nofirefox android no support noopera android no support nosafari ios full support 2samsung internet android no support nogestureevent() constructor non-standardchrome no support noedge no support nofirefox no support ...
... noie no support noopera no support nosafari full support 9webview android no support nochrome android no support nofirefox android no support noopera android no support nosafari ios full support 2samsung internet android no support noinitgestureevent non-standardchrome no support noedge no support nofiref...
...And 3 more matches

IDBCursorWithValue - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetidbcursorwithvaluechrome full support 24 full support 24 no support 23 — 57prefixed prefixed implemented with the vendor prefix: webkitedge ...
...full support 12firefox full support 16 full support 16 no support 10 — 16prefixed prefixed implemented with the vendor prefix: mozie partial support 10opera full support 15safari full support 7webview android full support yes full support yes no support ?
... — 57prefixed prefixed implemented with the vendor prefix: webkitchrome android full support 25 full support 25 no support 25 — 57prefixed prefixed implemented with the vendor prefix: webkitfirefox android full support 22opera android full support 14safari ios full support 8samsung internet android full support 1.5 full support 1.5 no support 1.5 — 7.0prefixed prefixed implemented with the vendor prefix: webkitvaluechrome ...
...And 3 more matches

IDBDatabase.transaction() - Web APIs
transactions are opened in one of three modes: readonly, readwrite and readwriteflush (non-standard, firefox-only.) versionchange mode can't be specified here.
... if you need to open the object store in readwrite mode to change data, you would use the following: var transaction = db.transaction('my-store-name', "readwrite"); as of firefox 40, indexeddb transactions have relaxed durability guarantees to increase performance (see bug 1112702), which is the same behaviour as other indexeddb-supporting browsers.
...in firefox 40+ the complete event is fired after the os has been told to write the data but potentially before that data has actually been flushed to disk.
...And 3 more matches

Privileged features - Web APIs
this page lists the windowfeatures parameter of window.open function that requires chrome-privilege in firefox.
...mozilla 1.2+ and netscape 7.1 will render the other menu system commands (in ff 1.0 and in ns 7.0x, the command system menu is not identified with the firefox/ns 7.0x icon on the left end of the titlebar: that's probably a bug.
...for compatibility reasons, it's now supported in firefox.
...And 3 more matches

:scope - CSS: Cascading Style Sheets
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internet:scopechrome full support 27edge full support 79firefox full support 32notes full support 32n...
...otes notes firefox 55 removes support for <style scoped> but not for the :scope pseudo-class, which is still supported.
...to change preferences in firefox, visit about:config.ie no support noopera full support 15safari full support 7webview android full support ≤37chrome android full support 27firefox android ...
...And 3 more matches

:where() - CSS: Cascading Style Sheets
you can see the result below (although bear in mind that currently :is() and :where() are currently only enabled by default in firefox nightly, version 77+.
... in other versions of firefox it is behind a pref — layout.css.is-where-selectors.enabled).
... desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internet:where()chrome full support 72disabled full support 72disabled disabled from version 72: this feature is behind the #enable-experimental-web-platform-features preference (needs to be ...
...And 3 more matches

CSS Scrollbars - CSS: Cascading Style Sheets
scrollbar-width desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetscrollbar-widthchrome no support noedge no support nofirefox full support 64 full support 64 ...
...to change preferences in firefox, visit about:config.ie no support noopera no support nosafari no support nowebview android no support nochrome android no support nofirefox android full support 64 full support 64 full support 63disabled disabled from ve...
...to change preferences in firefox, visit about:config.opera android no support nosafari ios no support nosamsung internet android no support nolegend full support full support no support no supportuser must explicitly enable this feature.user must explicitly enable this feature.
...And 3 more matches

<input type="range"> - HTML: Hypertext Markup Language
firefox only.
...firefox doesn't support hash marks and labels at all, for example, while chrome supports hash marks but doesn't support labels.
...(see firefox bug 981916, chrome bug 341071).
...And 3 more matches

Browser detection using the user agent - HTTP
do you actually want to detect firefox, as opposed to seamonkey, or chrome as opposed to chromium?
...so to detect safari you have to check for the safari string and the absence of the chrome string, chromium often reports itself as chrome too or seamonkey sometimes reports itself as firefox.
... must contain must not contain firefox firefox/xyz seamonkey/xyz seamonkey seamonkey/xyz chrome chrome/xyz chromium/xyz chromium chromium/xyz safari safari/xyz chrome/xyz or chromium/xyz safari gives two version numbers: one technical in the safari/xyz token, and one user-friendly in a version/xyz token opera opr/xyz [1] opera/xyz [1] opera 15+ (blink-based engine) [2] opera 12- (presto-based engine) internet explorer ...
...And 3 more matches

List of default Accept values - HTTP
user agent value comment firefox text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 (since firefox 66) text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8 (in firefox 65) text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 (before) in firefox 65 and earlier, this value can be modified using the network.http.accept.default parameter.
... user agent value comment firefox image/webp,*/* (since firefox 65) */* (since firefox 47) image/png,image/*;q=0.8,*/*;q=0.5 (before) this value can be modified using the image.http.accept parameter.
... user agent value comment firefox earlier than 3.6 no support for <video> firefox 3.6 and later video/webm,video/ogg,video/*;q=0.9,application/ogg;q=0.7,audio/*;q=0.6,*/*;q=0.5 see bug 489071 source chrome */* source internet explorer 8 or earlier no support for <video> values for audio resources when an audio file is requested, like via the <audio> html element, most b...
...And 3 more matches

Large-Allocation - HTTP
it is currently only implemented in firefox, but is harmless to send to every browser.
...firefox cannot move an iframe into a new process currently, so the document must load in the current process.
... firefox has moved to a multiprocess architecture, and this architecture is required in order to support the large-allocation header.
...And 3 more matches

User-Agent - HTTP
firefox ua string for more on firefox- and gecko-based user agent strings, see the firefox user agent string reference.
... the ua string of firefox is broken down into 4 components: mozilla/5.0 (platform; rv:geckoversion) gecko/geckotrail firefox/firefoxversion mozilla/5.0 is the general token that says the browser is mozilla-compatible.
...firefox os phones simply say mobile — the web is the platform.
...And 3 more matches

SVG documentation index - SVG: Scalable Vector Graphics
5 linking guide, svg the target attribute on the svg <a> element doesn't work in mozilla firefox 1.5.
...versions of svg viewers prior to the release of firefox 1.5 unfortunately paid scant attention to namespaces, but they are essential to multi-xml dialect supporting user agents such as gecko-based browsers which must be very strict.
... 11 svg 1.1 support in firefox firefox, svg you can find some basic examples of svg syntax and usage in the w3c svg test suite.
...And 3 more matches

Features restricted to secure contexts - Web security
api chrome/opera edge safari firefox async clipboard api 66 not supported not supported 63 background sync (see syncmanager, for example) 49 not supported not supported not supported cache-control: immutable not supported 15 11 49 credential management api 51 not supported not supported not supported generic sensor api 67 not suppo...
... api chrome edge safari firefox application cache restricted to secure contexts planned in chrome 70 deprecation planning started in february 2018 public interest on deprecation webkit bug 182442 restricted to secure contexts in firefox 62 geolocation restricted to secure contexts in 50 restricted to secure contexts in 10 restricted to secure contexts in 55 device orientai...
... restricted to secure contexts in firefox 68.
...And 3 more matches

simple-storage - Archive of obsolete content
lets an add-on store data so that it's retained across firefox restarts.
...you may also need to include the --no-copy option to prevent firefox from copying the profile to a temporarry directory each time it starts.
... important: if you use this method, you must end your debugging session by quitting firefox normally, not by cancelling the shell command.
...And 2 more matches

system - Archive of obsolete content
usage querying your environment using the system module you can access environment variables (such as path), find out which operating system your add-on is running on and get information about the host application (for example, firefox or fennec), such as its version.
... pathfor(id) firefox enables you to get the path to certain "special" directories, such as the desktop or the profile directory.
... for example: // get firefox profile path var profilepath = require('sdk/system').pathfor('profd'); // get os temp files directory (/tmp) var temps = require('sdk/system').pathfor('tmpd'); // get os desktop path for an active user (~/desktop on linux // or c:\documents and settings\username\desktop on windows).
...And 2 more matches

dev/panel - Archive of obsolete content
this module is new in firefox 34.
... note that at the moment you can't debug remote targets (for example, firefox os, the firefox os simulator, or firefox for android) using tools developed with this api.
... enables you to extend the firefox developer tools.
...And 2 more matches

Using third-party modules (jpm) - Archive of obsolete content
you can use jpm from firefox 38 onwards.
... the add-on sdk is extensible by design: you can use the modules that ship inside firefox, but you can also create your own modules and make them available for anyone else to use.
... with jpm, we use npm as the package manager for sdk modules that don't ship inside firefox.
...And 2 more matches

Tutorials - Archive of obsolete content
create user interfaces add a toolbar button attach a button to the firefox add-on toolbar.
... add a menu item to firefox add items to firefox's main menus.
... add a context menu item add items to firefox's context menu.
...And 2 more matches

Custom about: URLs - Archive of obsolete content
setup for firefox 4+ this is a simple example of a custom about page for bootstrapped addons.
... in bug 1254752 things changed for firefox 48 and up.
...this code will work for all versions of firefox 4 and up.
...And 2 more matches

Installing Extensions and Themes From Web Pages - Archive of obsolete content
sh"), tostring: function () { return this.url; } }; this specifies the display name (foo) for use in the confirmation dialog, the url to the extension (which is the link href, recall), the icon url to display in the confirmation dialog, a hash of the xpi file contents (to protect against corrupted downloads), and a tostring function which will allow this code to work with versions of firefox 0.8 and earlier.
...the icon can be any image format supported by firefox, and should be 32x32 pixels in size.
... tostring() the tostring() property should return the xpi url, for compatibility with firefox browsers older than version 1.0, and other applications such as seamonkey.
...And 2 more matches

Adding menus and submenus - Archive of obsolete content
if you have nothing to show on a menu, you should follow the standard used in firefox: show a single disabled item with an "(empty)" label.
... if filling your menu takes a noticeable amount of time, you should not make firefox (and your users) wait for it to fill up before displaying anything.
...an example of one such item is the view > status bar item in the main firefox menu.
...And 2 more matches

Connecting to Remote Content - Archive of obsolete content
luckily, firefox now provides a few alternatives for extension developers.
... the json page explains in detail how to parse json data in different versions of firefox and other applications.
...they help you to track http/https requests and responses occurring in firefox.
...And 2 more matches

Mozilla Documentation Roadmap - Archive of obsolete content
« previousnext » mozilla documentation firefox extension development is still an immature discipline, with a developer base consisting mostly of hobbyists and just a few organized development groups.
...it encompasses firefox, other mozilla products, javascript, css, xul, web and extension development guidelines, accessibility, usability, best practices...
...there are various tricks that you can't learn anywhere, but you know that firefox implements them in some way.
...And 2 more matches

Updating addons broken by private browsing changes - Archive of obsolete content
n chrome apis: ff 19: saveurl saveinternal openlinkin ff 20: openbrowserwindow gprivatebrowsingui finally, if your code watches for any of these observer notifications: private-browsing private-browsing-cancel-vote private-browsing-change-granted private-browsing-transition-complete then your addon will require updating to correctly support the new per-window private browser feature in firefox 20 (and will require updating to work correctly in releases of firefox since the ones listed).
... nsiprivatebrowsingservice: this service is deprecated, and as of firefox 20 it is now an empty interface.
...the global private browsing service is actively being removed, and may not even exist as of firefox 21.
...And 2 more matches

Using the Stylesheet Service - Archive of obsolete content
the stylesheets registered with this api apply to all documents; firefox 18 extended nsidomwindowutils with loadadditionalstylesheet() and removeadditionalstylesheet() to manage stylesheets for a specific document (bug 737003).
... historical information nsistylesheetservice was introduced in firefox 1.5.
... in firefox 1.5 and 2, adding and removing such style sheets takes effect upon the next load of a page.
...And 2 more matches

Download Manager preferences - Archive of obsolete content
in firefox,thunderbird and seamonkey the default value is false.
...0 indicates that the downloads should be paused and resumed automatically the next time firefox is run; 1 indicates that the downloads should be paused but will not automatically resume when the application is restarted; and 2 indicates that the downloads will be canceled on quit.
... in firefox and seamonkey the default value is 2.
...And 2 more matches

Error Console - Archive of obsolete content
the error console is deprecated in firefox, and is now only made available if you set the devtools.errorconsole.enabled preference to true.
...in firefox, the error console can be opened from the tools menu or by ctrl-shift-j.
...see setting up extension development environment#development preferences for the preferences you should set if you want to see errors from firefox and extensions in the error console.
...And 2 more matches

Frequently Asked Questions - Archive of obsolete content
we currently maintain two documents to help answer this question: a status page for svg in firefox 1.5+ and a status page for svg in the development trunk.
... when you try to load svg files from some websites you may get a dialogue asking you "what should firefox do with this file?".
... this is either because your browser doesn't support svg (you must have mozilla firefox 1.5 or newer), or because the webpage/server isn't correctly telling mozilla that the file contains svg.
...And 2 more matches

Manifest Files - Archive of obsolete content
if you just want to try testing privileged xul code in the firefox browser, you can do this easily by just using a manifest with only one line in it: create a new directory somewhere.
...the browser.manifest file used by firefox looks like this: content branding jar:browser.jar!/content/branding/ xpcnativewrappers=yes content browser jar:browser.jar!/content/browser/ xpcnativewrappers=yes overlay chrome://global/content/viewsource.xul chrome://browser/content/viewsourceoverlay.xul overlay chrome://global/content/viewpartialsource.xul chrome://browser/content/viewsourceoverlay.xul overlay chrome://browser/content/pageinfo...
...firefox's extension manager handles installing extensions packaged into xpi files automatically.
...And 2 more matches

Building XULRunner - Archive of obsolete content
xulrunner is built using basically the same process as firefox or other applications.
...instead a xulrunner build is a just special build made from the firefox/mozilla tree, using the same tag as a firefox build.
... for instance xulrunner 1.8.1.3, the corresponding tag is cvs is : firefox_2_0_0_3_release to find out how those firefox tags and xulrunner version maps, check out the file mozilla/config/milestone.txt .
...And 2 more matches

2006-11-10 - Archive of obsolete content
summary: mozilla.dev.apps.firefox - november 4, 2006 - november 10, 2006 announcements none this week.
... event in firefox similar to ondownloadcomplete event in ie an inquiry about how to change the font of a web page before it is displayed using an extenstion.
... firefox 2.0 - net accessed when bookmark properties viewed question about whether firefox 2.0 downlads the web page again when the properties of the bookmark are viewed.
...And 2 more matches

2006-12-01 - Archive of obsolete content
summary: mozilla.dev.apps.firefox - november 24, 2006 - december 1, 2006 announcements none this week.
... discussions firefox 2.0 should re-implement modal window.open to support web 2.0 a plea to re-implement the option to show modal windows, using window.open(), from inside an untrusted script.
... xml in firefox is a major problem a major debate surrounding the use of xml for customizing rss feeds.
...And 2 more matches

Shipping a plugin as a Toolkit bundle - Archive of obsolete content
one of the new features that is available in firefox 1.5 is the ability to place browser plugins in a toolkit bundle.
...when this method is used, you can choose to either place the plugin into the plugins directory, or place it into your own directory and modify the windows registry to let firefox know where to find the plugin.
...as of firefox 3 (and any gecko 1.9 based application) the use of install.js scripts is no longer supported and plugins must either be shipped as an executable installer or in a bundle as described here.
...And 2 more matches

Plugins - Archive of obsolete content
important: since firefox 52, all plugin support except flash has been dropped (see plug-in support has been dropped other than flash for more details).
... site author guide for click-to-activate plugins these guidelines will help website authors use plugins when they are blocked by default with the firefox click-to-activate feature.
... supporting private browsing in plugins firefox 3.5 introduced support for private browsing; learn how to make your plugin respect the user's privacy wishes.
...And 2 more matches

XForms - Archive of obsolete content
obsolete since gecko 19 (firefox 19 / thunderbird 19 / seamonkey 2.16)this feature is obsolete.
... note: support for xforms was removed from firefox in firefox 19.
... xforms tutorial and cookbook xforms in wikibook format - over 50 examples tested with firefox.
...And 2 more matches

CSS and JavaScript accessibility best practices - Learn web development
the following image shows the highlight in both firefox (a dotted outline) and chrome (a blue outline): you can be creative with link styles, as long as you keep giving users feedback when they interact with the links.
... accept that users can override styles accept that users can override your styles it is possible for users to override your styles with their own custom styles, for example: see sarah maddox's how to use a custom style sheet (css) with firefox for a useful guide covering how to do this manually in firefox, and how to use a custom style sheet (css) with internet explorer by adrian gordon for the equivalent ie instructions.
... it is probably easier to do it using an extension, for example the stylish extension is available for firefox, safari, opera, and chrome.
...And 2 more matches

What is CSS? - Learn web development
browsers, like firefox, chrome, or edge , are designed to present documents visually, for example, on a computer screen, projector or printer.
... desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfont-familychrome full support 1edge full support 12firefox full support 1notes full support ...
...see bug 1536148.ie full support 3opera full support 3.5safari full support 1webview android full support 1chrome android full support 18firefox android full support 4opera android full support 10.1safari ios full support 1samsung internet android full support 1.0system-uichrome full support 56edge ful...
...And 2 more matches

Basic native form controls - Learn web development
the following screenshot shows default, focused and disabled text input types in firefox 71 and safari on macos and in chrome 79 and edge 18 on windows 10.
...for more information on what firefox implements, see insecure passwords.
... the following screenshots show default, focused and disabled checkboxes in firefox 71 and safari 13 on macos and chrome 79 and edge 18 on windows 10: note: any checkboxes and radio buttons with the checked attribute on load match the :default pseudo class, even if they are no longer checked.
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Mozilla splash page - Learn web development
the following subsections detail what you need to do: preparing images using your favourite image editor, create 400px wide and 120px wide versions of: firefox_logo-only_rgb.png firefox-addons.jpg mozilla-dinosaur-head.png call them something sensible, e.g.
... firefoxlogo400.png and firefoxlogo120.png.
...you'll also link to the firefox logo in the site header.
...And 2 more matches

Handling common HTML and CSS problems - Learn web development
as an example, in firefox the css inspector will show css declarations that aren't applied crossed out, with a warning triangle.
...on a non-supporting platform such as firefox or internet explorer, the inputs will just fallback to normal text inputs, so at least the user can still enter some information.
... for example, in the firefox dev tools, you get this kind of output at the bottom of the dom inspector: if for example you were trying to use this selector, you'd be able to see that it wouldn't select the input element as desired: form > #date (the date form input isn't directly inside the <form>; you'd be better off using a general descendant selector instead of a child selector).
...And 2 more matches

Handling common JavaScript problems - Learn web development
let's investigate this now, using a more sophisticated feature of browser developer tools: the javascript debugger as it is called in firefox.
... in firefox, the debugger tab looks as follows: on the left, you can select the script you want to debug (in this case we have only one).
... the code used to look something like this (although this is a simplified example): let ua = navigator.useragent; if(ua.indexof('firefox') !== -1) { // run firefox-specific code } else if(ua.indexof('chrome') !== -1) { // run chrome-specific code } the idea was fairly good — detect what browser is viewing the site, and run code as appropriate to make sure the browser will be able to use your site ok.
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omni.ja (formerly omni.jar)
firefox and thunderbird achieve performance improvements by moving many of their internal parts from being standalone files or sets of jar files into just one jar file called omni.ja; this reduces the amount of i/o needed to load the application.
... note: starting with firefox 10 and thunderbird 10, the file extension .ja is used because windows system restore does not back up files with the .jar extension, but it does back up .ja files.
... this change was needed to prevent firefox from becoming corrupted.
...And 2 more matches

Frequently Asked Questions for Lightweight themes
lightweight themes are easy-to-install, easy-to-use skins that change the look of your firefox web browser.
... lightweight themes work with any type of computer that has firefox installed.
... installing lightweight themes how do i add lightweight themes to my firefox?
...And 2 more matches

Creating MozSearch plugins
firefox 2 uses a simplified form of the opensearch format for storing search plugins.
...it should only be used if your intention is to distribute the search plugin packaged in a firefox extension, or if you are creating plugins meant to be shipped by default in a firefox build.
... for creating search plugins for installation from the web, see creating opensearch plugins for firefox the plugin file the mozsearch format is similar to the opensearch format.
...And 2 more matches

Creating a spell check dictionary add-on
this page describes how to package a hunspell spell check dictionary as a firefox add-on, or how to update your existing add-on, so that it can be installed, uninstalled and updated without a restart.
... packaging a firefox add-on is a zip file renamed to use an .xpi file extension instead of the normal .zip file extension.
...nstall-manifest"> <em:id>locale-code@dictionaries.addons.mozilla.org</em:id> <em:version>version number</em:version> <em:type>64</em:type> <em:unpack>true</em:unpack> <em:name>name</em:name> <!-- other install.rdf metadata such as em:localized, em:description, em:creator, em:developer, em:translator, em:contributor or em:homepageurl --> <!-- firefox --> <em:targetapplication> <description> <em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id> <em:minversion>18.0a1</em:minversion> <em:maxversion>46.0</em:maxversion> </description> </em:targetapplication> <!-- thunderbird --> <em:targetapplication> <description> <em:id>{3550f703-e582-4d05-9a08-453d09bdfdc6}</em:id> ...
...And 2 more matches

Contributing to the Mozilla code base
we know even before you start contributing that getting set up to work on firefox and finding a bug that's a good fit for your skills can be a challenge.
... project skills documentation/onboarding firefox browser (core layers) c++ firefox developers documentation firefox (front-end) javascript and/or html/css firefox developers documentation devtools javascript and/or html/css contribute to devtools add-ons javascript and/or html/css contribute to add-ons firefox focus for android java contribute to firefox focus for android ...
... firefox for fire tv java contribute to firefox for fire tv firefox preview (mobile browser, codename: "fenix") kotlin contribute to firefox preview firefox for ios swift contribute to firefox for ios firefox focus for ios swift contribute to firefox focus for ios mozilla hubs javascript and/or html/css, vr contribute to mozilla hubs servo rust contribute to servo there are even many ways to contribute to the mozilla mission without programming.
...And 2 more matches

Gecko SDK
firefox, since you do not access parts of the front end from within a component.
... the sdk follows the same release schedule as firefox/thunderbird.
... download link latest gecko (latest firefox) gecko 1.9.2 (firefox 3.6) gecko 1.9.1 (firefox 3.5) gecko 1.9 (firefox 3.0) gecko 1.8 (firefox 1.5 and 2.0) windows download download download download download mac x86_64 download n/a n/a n/a n/a mac i386 download download download download n/a mac ppc n/a download download download download linux x86_64 download n/a n/a n/a n/a linux i686 download download do...
...And 2 more matches

How to implement a custom autocomplete search component
a newer and slightly simplified mechanism that is used in "toolkit" applications such as firefox and xulrunner.
...there are more options and features, see xul:textbox_(firefox_autocomplete) for more details.
... the toolkit mechanism has built-in support for several autocomplete sources, including: history: search the browser's url history (firefox: 1.0+; seamonkey: 1.1+) form-history: search the values that the user has entered into form fields.
...And 2 more matches

JNI.jsm
to use it, you first need to import the code module into your javascript scope: components.utils.import("resource://gre/modules/jni.jsm"); this module was available in firefox since version 17.
...the most common use for this module is in add-ons and other works on firefox for android (fennec).
... with this module, all of the android sdk functions that firefox has permissions for are at your fingertips.
...And 2 more matches

PromiseWorker.jsm
here is the test case from firefox codebase: mozilla dxr :: test_promise.js.
... transferring special data from main thread to worker the regular rules of workers apply; special data of messageport and arraybuffer objects can be transferred as of firefox 40.
... the complete demo is found here: github :: promiseworker custom errors demo catching the promise from the worker, it is not possible, as of firefox 40, to cause the promise on the main thread catch.
...And 2 more matches

Using JavaScript code modules
if you're writing an extension for firefox 4 and already have a chrome.manifest with a content instruction in it, you can put the code module in your content folder and reference it like your other content files via chrome://<yourextension>/content/<yourmodule>.jsm.
... if your extension or application needs to support mozilla 1.9.x (firefox 3.x), you should register a new resource url.
... unloading code modules requires gecko 7.0(firefox 7.0 / thunderbird 7.0 / seamonkey 2.4) components.utils.unload() allows you to unload a previously imported code module.
...And 2 more matches

Localizing with Mozilla Translator
let's assume you have a firefox product in mt with the directory layout present in language packs, as you probably would need for a initial localization.
... from cvs to mercurial in mt so, you have a firefox product in mt with a platform neutral and, inside it, several directories (''components'' in mt terminology) more or less like the second sample above, checked out from cvs.
...besides that, you will need to create one tiny product for other-licenses/branding/firefox.
...And 2 more matches

Localization formats
you may choose to present just the html for localization: we give an html file which lists several pieces of content like, <h1>getting started</h1> and the localizer translates to <h1>débuter avec firefox</h1> the localizer then submits the translated html or php back to us by either checking in changes to svn or sending us a patch that pascal checks in.
...that file will have the following structure: ;getting started débuter avec firefox the english content is designated by the semi-colon and the localizer provides the translation underneath.
... $array["getting started"] = "débuter avec firefox" the php code searches the array and returns the translation that is associated with the english term used by the web developer.
...And 2 more matches

Mozilla projects on GitHub
codefirefox the codefirefox site, with videos and tutorials about how to contribute to the firefox project and mozilla code in general.
... debugger.html the debugger.html, a modern universal js debugger for firefox devtools, node, and every other js environment.
... fxdt-adapters the firefox developer tools adapter that lets you debug various remote targets from the firefox developer tools.
...And 2 more matches

Build Metrics
"build metrics" is a catch-all term for performance measures that are generated by the firefox build system and tracked by perfherder.
... num_constructors number of static constructors found by the compiler in the firefox c++ codebase.
...static constructors are undesirable because their initialization imposes an unavoidable time penalty every time firefox is started.
...And 2 more matches

Investigating leaks using DMD heap scan mode
firefox’s dmd heap scan mode tracks the set of all live blocks of malloc-allocated memory and their allocation stacks, and allows you to log these blocks, and the values stored in them, to a file.
... prerequisites a debug dmd build of firefox.
... definitions i'll write $objdir for the object directory for your firefox dmd build, $srcdir for the top level of the firefox source directory, and $heapgraph for the location of the heapgraph repo, and $logdir for the location you want logs to go to.
...And 2 more matches

Reporting a Performance Problem
enabling the profiler toolbar button these steps only work in firefox 75+.
... visit https://profiler.firefox.com/ click on "enable profiler menu button" the profiler toolbar button will show up in the top right of the url bar as a small stopwatch icon you can right-click on the button and remove it from the toolbar when you're done with it.
...make sure to choose an appropriate setting for the recording (if you're not sure, choose firefox platform), and then choosing "start recording".
...And 2 more matches

Performance
about:memory is built on top of firefox's memory reporting infrastructure.
...the "leaks" tool is not recommended for use with spidermonkey or firefox, because it gets confused by tagged pointers and thinks objects have leaked when they have not (see bug 390944).
...that log can then be replayed against firefox's default memory allocator independently or through another replace-malloc library, allowing the testing of other allocators under the exact same workload.
...And 2 more matches

A guide to searching crash reports
the mozilla crash-stats site provides facilities for investigating large numbers of firefox crash reports.
... this guide to searching through crash reports may help you locate the crash reports that will help you find and fix the firefox bug you're working on.
...the product field is pre-populated with "firefox" because that is a common case.
...And 2 more matches

Midas editor module security preferences
this functionality is completely removed since 2013-12-14 18:23 pst, see: bugs 38966 and 913734 note: if you've reached this page from a message box in firefox or another mozilla product, try using keyboard shortcuts for the cut, copy, and paste commands: copy: ctrl+c or ctrl+insert (command+c on mac) paste: ctrl+v or shift+insert (command+v on mac) cut: ctrl+x or shift+delete (command+x on mac) the information on the rest of this page is for web developers and advanced users.
...only change these settings as needed to try the demo above and to test your own add-on or firefox-internal code, and be sure to restore the default settings when you're done!
... changing the preferences in firefox quit firefox.
...And 2 more matches

WebReplayRoadmap
replay was an early-stage experiment and is no longer part of firefox.
... this document describes existing, planned, and potential features for the firefox developer tools that are based on web replay, along with their ui.
... cloud integration (partially implemented) storing recordings in the cloud and interacting with them via the debugger could streamline several features described above: difficulties when recording and replaying on different machines with incompatible firefox builds or operating systems will be smoothed out.
...And 2 more matches

places.sqlite Database Troubleshooting
how to (try to) recover from a corrupt places.sqlite sometimes after a firefox/aurora/nightly upgrade, history disappears, but bookmarks are at their place.
... close firefox and ensure it's done closing in your task manager.
... before you proceed, make a backup of the firefox profile folder, in any case.
...And 2 more matches

XPCOM glue
internal linkage will be unavailable to extension authors in xulrunner 1.9 (firefox 3) because the nonfrozen symbols will not be exported from libxul.
... linking strategy: dependent glue standalone glue compiler flags: cross-platform #include "xpcom-config.h" #include "xpcom-config.h" #define xpcom_glue windows /fi "xpcom-config.h" linux -include "xpcom-config.h" linker flags: windows for older versions of the firefox sdk: -libpath:c:/path/to/sdk/lib xpcomglue_s.lib xpcom.lib nspr4.lib for recent versions of the firefox sdk (at least version 42, but possibly earlier versions as well): -libpath:c/path/to/sdk/lib xpcomglue_s.lib xul.lib nss3.lib mozcrt.lib -libpath:c:/path/to/sdk/lib xpcomglue.lib mac -l/path/to/sdk/lib -l/path/to/sdk/bin -wl,-executable-path,/path/to/sdk/b...
... to link against xpcom using recent versions of the firefox sdk (at least version 42, but possibly earlier versions as well), you need to link against xul (libxul/xul.lib).
...And 2 more matches

nsIAccessibleRetrieval
inherits from: nsisupports last changed in gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) method overview nsiaccessible getaccessiblefor(in nsidomnode anode); nsiaccessible getaccessibleinshell(in nsidomnode anode, in nsipresshell apresshell); nsiaccessible getaccessibleinweakshell(in nsidomnode anode, in nsiweakreference apresshell); obsolete since gecko 2.0 nsiaccessible getaccessibleinwindow(in nsidomnode anode, in nsidomwindow adomwin); obsolete since gecko 2.0 nsiaccessible getapplicationaccessible(); nsiaccessible getattachedaccessiblefor(i...
... getaccessibleinweakshell() obsolete since gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) return an nsiaccessible for a dom node in the given weak shell.
... getaccessibleinwindow() obsolete since gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) return an nsiaccessible for a dom node in present shell for this dom window.
...And 2 more matches

nsIAlertsService
1.0 66 introduced gecko 1.7 inherits from: nsisupports last changed in gecko 22 (firefox 22 / thunderbird 22 / seamonkey 2.19) by default a message is displayed in a small window that slides up from the bottom of the screen, holds there for a few seconds, then slides down.
... note: prior firefox 22, the alerts service was only supported on windows in gecko 1.7, had no effect on mac os x in gecko 1.8, but was fully supported in mac os x in gecko 1.9.
... note: since gecko 22, the notifications are provided by firefox and have become platform-independent.
...And 2 more matches

nsIDOMNSHTMLDocument
inherits from: nsisupports last changed in gecko 6.0 (firefox 6.0 / thunderbird 6.0 / seamonkey 2.3) method overview void captureevents(in long eventflags); void clear(); boolean execcommand(in domstring commandid, in boolean doshowui, in domstring value); boolean execcommandshowhelp(in domstring commandid); obsolete since gecko 14.0 domstring getselection(); nsidomdocument open(in acstring acontenttype, in boolean areplace); boolean querycommandenabled(in domstring commandid); boolean querycommandindeterm(in domstring commandid); ...
... execcommandshowhelp() obsolete since gecko 14.0 (firefox 14.0 / thunderbird 14.0 / seamonkey 2.11) this method never did anything but throw an exception, and was removed entirely in gecko 14.0 (firefox 14.0 / thunderbird 14.0 / seamonkey 2.11).
... querycommandtext() obsolete since gecko 14.0 (firefox 14.0 / thunderbird 14.0 / seamonkey 2.11) this method never did anything but throw an exception, and was removed entirely in gecko 14.0 (firefox 14.0 / thunderbird 14.0 / seamonkey 2.11).
...And 2 more matches

nsIDOMWindowUtils
1.0 66 introduced gecko 1.8 inherits from: nsisupports last changed in gecko 49.0 (firefox 49.0 / thunderbird 49.0 / seamonkey 2.46) implemented by: window.
... the structure of the json is unspecified and may vary between versions of firefox.
... the structure of the json is unspecified and may vary between versions of firefox.
...And 2 more matches

nsILocalFileMac
inherits from: nsilocalfile last changed in gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) method overview cfurlref getcfurl(); native code only!
...native code only!inittoappwithcreatorcode obsolete since gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1)this feature is obsolete.
... native code only!initwithfsspec obsolete since gecko 1.9.2 (firefox 3.6 / thunderbird 3.1 / fennec 1.0)this feature is obsolete.
...And 2 more matches

nsIMacDockSupport
1.0 66 introduced gecko 2.0 inherits from: nsimacdocksupport last changed in gecko 11.0 (firefox 11.0 / thunderbird 11.0 / seamonkey 2.8) implemented by: @mozilla.org/cookie-monster;1.
... about dockmenu by default firefox adds two menu items to the dock menu.
...notice the activateapplication(true), if this is not done then firefox will not be activated.
...And 2 more matches

nsINavHistoryResultObserver
1.0 66 introduced gecko 2.0 inherits from: nsisupports last changed in gecko 11.0 (firefox 11.0 / thunderbird 11.0 / seamonkey 2.8) note: in gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1), this interface replaced the older nsinavhistoryresultviewer interface, which only allowed one client at a time.
... containerclosed() obsolete since gecko 11.0 (firefox 11.0 / thunderbird 11.0 / seamonkey 2.8) called when a container node's state changes from opened to closed.
... note: this method was deprecated in gecko 2.0 and removed in gecko 11.0 (firefox 11.0 / thunderbird 11.0 / seamonkey 2.8).
...And 2 more matches

nsIPluginHost
inherits from: nsisupports last changed in gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) method overview nsifile createtempfiletopost(in string apostdataurl); native code only!
... nsifile createtempfiletopost( in string apostdataurl ); parameters apostdataurl return value native code only!createtmpfiletopost obsolete since gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1)this feature is obsolete.
... void findproxyforurl( in string aurl, out string aresult ); parameters aurl aresult native code only!getplugin nsiplugin getplugin( in string amimetype ); parameters amimetype return value getplugincount() obsolete since gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) void getplugincount( out unsigned long aplugincount ); parameters aplugincount native code only!getpluginfactory obsolete since gecko 1.9.2 (firefox 3.6 / thunderbird 3.1 / fennec 1.0)this feature is obsolete.
...And 2 more matches

DOMHighResTimeStamp - Web APIs
in firefox, the privacy.reducetimerprecision preference is enabled by default and defaults to 20 µs in firefox 59; in 60 it will be 2ms.
... // reduced time precision (2ms) in firefox 60 event.timestamp // 1519211809934 // 1519211810362 // 1519211811670 // ...
... in firefox, you can also enable privacy.resistfingerprinting, the precision will be 100ms or the value of privacy.resistfingerprinting.reducetimerprecision.microseconds, whichever is larger.
...And 2 more matches

DataTransfer - Web APIs
removed in firefox 71.
...removed in firefox 71.
...removed in firefox 71.
...And 2 more matches

Document.execCommand() - Web APIs
the grabber is disabled by default since firefox 64 (bug 1490641).
...the controls are disabled by default since firefox 64 (bug 1490641).
...the handles are disabled by default since firefox 64 (bug 1490641).
...And 2 more matches

FileSystem - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfilesystemchrome full support 7alternate name full support 7alternate name alternate name uses the non-standard name: domfilesystemedge full support ...
...it's not available for use in file or folder picker panels (such as when you use an <input> element with the htmlinputelement.webkitdirectory attribute.firefox full support 50ie no support noopera full support 15prefixed full support 15prefixed prefixed implemented with the vendor prefix: webkitsafari full support 11.1webview andro...
... ≤37alternate name full support ≤37alternate name alternate name uses the non-standard name: domfilesystemchrome android full support 18alternate name full support 18alternate name alternate name uses the non-standard name: domfilesystemfirefox android full support 50opera android full support 14prefixed full support 14prefixed prefixed implemented with the vendor prefix: webkitsafari ios full support 11.3samsung internet android full support ...
...And 2 more matches

FileSystemDirectoryReader - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfilesystemdirectoryreader deprecatednon-standardchrome full support 8alternate name full support 8alternate name alternate name uses the non-standard name: directoryreaderedge ...
... full support ≤18alternate name full support ≤18alternate name alternate name uses the non-standard name: webkitdirectoryreaderfirefox full support 50ie no support noopera full support yesprefixed full support yesprefixed prefixed implemented with the vendor prefix: webkitsafari full support 11.1webview android full support ≤37alternate name full support ≤37alternate name alternate name uses the ...
...non-standard name: directoryreaderchrome android full support 18alternate name full support 18alternate name alternate name uses the non-standard name: directoryreaderfirefox android full support 50opera android no support nosafari ios full support 11.3samsung internet android full support yesprefixed full support yesprefixed prefixed implemented with the vendor prefix: webkitreadentries deprecatednon-standardchrome full support 8edge ...
...And 2 more matches