Index - MDN Web Docs Glossary: Definitions of Web-related terms
4 alpn alpn, draft, glossary, needscontent, tls application-layer protocol negotiation (alpn) is a tls extension which indicates what application layer protocol is negotiating the encryped connection without requiring additional round trips.
... 222 irc glossary, infrastructure, internet relay chat, open protocol, irc irc (internet relay chat) is a worldwide chat system requiring an internet connection and an irc client, which sends and receives messages via the irc server.
... 272 mixin codingscripting, glossary, method, mixin, property a mixin is a class or interface in which some or all of its methods and/or properties are unimplemented, requiring that another class or interface provide the missing implementations.

Third-party APIs - Learn web development
note: some apis handle access to their functionality slightly differently, requiring the developer to make an http request to a specific url pattern to retrieve data.
... requiring a key enables the api provider to hold users of the api accountable for their actions.
... wiring up the pagination buttons to make the pagination buttons work, we will increment (or decrement) the value of the pagenumber variable, and then re-rerun the fetch request with the new value included in the page url parameter.

Performance best practices for Firefox front-end engineers
it is expected that over time, script will update the dom, requiring us to recalculate styles.
... it is expected that over time, script will update the dom, requiring us to recalculate styles, and then update layout.
...assuming there weren’t any style changes requiring size or position recalculation above line 1, the clientheight information should be cached since the last reflow, and will not result in a new layout calculation.

Optimizing Applications For NSPR
in the combined (mxn) model, which includes nt, irix (sprocs), and pthreads-user, the primordial thread is always a local thread.
...the specific area surrounding pthread's continuation thread has been both observed and empirically proven faulty, and a correction identified.
... irix the irix (classic) implementation has a known race condition in creating new threads.

Index
forwardcompatible { irix:6.2:mips sunos:5.5.1:sparc } platforms { winnt::x86 { modulename { "example module" } modulefile { win32/fort32.dll } defaultmechanismflags{0x0001} defaultcipherflags{0x0001} files { win32/setup.exe { executable relativepath { %temp%/setup.exe } } win32/setup.hlp { relativepath { %temp%/s...
...01} files { unix/fort.so { relativepath{%root%/lib/fort.so} absolutepath{/usr/local/netscape/lib/fort.so} filepermissions{555} } xplat/instr.html { relativepath{%root%/docs/inst.html} absolutepath{/usr/local/netscape/docs/inst.html} filepermissions{555} } } } irix:6.2:mips { equivalentplatform { sunos:5.5.1:sparc } } } script grammar the script is basic java, allowing lists, key-value pairs, strings, and combinations of all of them.
...nspr supports these platforms: o aix (rs6000) o bsdi (x86) o freebsd (x86) o hpux (hppa1.1) o irix (mips) o linux (ppc, alpha, x86) o macos (powerpc) o ncr (x86) o nec (mips) o os2 (x86) o osf (alpha) o reliantunix (mips) o sco (x86) o solaris (sparc) o sony (mips) o sunos (sparc) o unixware (x86) o win16 (x86) o win95 (x86) o winnt (x86) for example: irix:6.2:mips sunos:5.5.1:sparc linux:2.0.32:...

NSS tools : modutil
forwardcompatible { irix:6.2:mips sunos:5.5.1:sparc } platforms { winnt::x86 { modulename { "example module" } modulefile { win32/fort32.dll } defaultmechanismflags{0x0001} defaultcipherflags{0x0001} files { win32/setup.exe { executable relativepath { %temp%/setup.exe } } win32/setup.hlp { relativepath { %temp%/setup.hlp } } win32/setup.cab { relativepath { %temp%/setup.cab } } } } win95::x86 { equi...
...rc { modulename { "example unix module" } modulefile { unix/fort.so } defaultmechanismflags{0x0001} cipherenableflags{0x0001} files { unix/fort.so { relativepath{%root%/lib/fort.so} absolutepath{/usr/local/netscape/lib/fort.so} filepermissions{555} } xplat/instr.html { relativepath{%root%/docs/inst.html} absolutepath{/usr/local/netscape/docs/inst.html} filepermissions{555} } } } irix:6.2:mips { equivalentplatform { sunos:5.5.1:sparc } } } script grammar the script is basic java, allowing lists, key-value pairs, strings, and combinations of all of them.
...nspr supports these platforms: o aix (rs6000) o bsdi (x86) o freebsd (x86) o hpux (hppa1.1) o irix (mips) o linux (ppc, alpha, x86) o macos (powerpc) o ncr (x86) o nec (mips) o os2 (x86) o osf (alpha) o reliantunix (mips) o sco (x86) o solaris (sparc) o sony (mips) o sunos (sparc) o unixware (x86) o win16 (x86) o win95 (x86) o winnt (x86) for example: irix:6.2:mips sunos:5.5.1:sparc linux:2.0.32:x86 win95::x86 the module information is defined independently for each platf...

NSS Tools modutil
if so, the metainfo file for the netscape signing tool would include a line such as this: + pkcs11_install_script: pk11install the sample script file could contain the following: forwardcompatible { irix:6.2:mips sunos:5.5.1:sparc }platforms { winnt::x86 { modulename { "fortezza module" } modulefile { win32/fort32.dll } defaultmechanismflags{0x0001} defaultcipherflags{0x0001} files { win32/setup.exe { executable relativepath { %temp%/setup.exe } } win32/setup.hlp { relativepath { %temp%/setup.hlp } } ...
... cipherenableflags{0x0001} files { unix/fort.so { relativepath{%root%/lib/fort.so} absolutepath{/usr/local/netscape/lib/fort.so} filepermissions{555} } xplat/instr.html { relativepath{%root%/docs/inst.html} absolutepath{/usr/local/netscape/docs/inst.html} filepermissions{555} } } } irix:6.2:mips { equivalentplatform { sunos:5.5.1:sparc } }} script grammar the script file grammar is as follows: --> valuelistvaluelist --> value valuelist <null>value ---> key_value_pair stringkey_value_pair --> key { valuelist }key --> stringstring --> simple_string "complex_string"simple_string --> [^ \t\n\""{""}"]+ (no whitespace, quotes, or brace...
...the following system names and platforms are currently defined by nspr: aix (rs6000) bsdi (x86) freebsd (x86) hpux (hppa1.1) irix (mips) linux (ppc, alpha, x86) macos (powerpc) ncr (x86) nec (mips) os2 (x86) osf (alpha) reliantunix (mips) sco (x86) solaris (sparc) sony (mips) sunos (sparc) unixware (x86) win16 (x86) win95 (x86) winnt (x86) here are some examples of valid platform strings: irix:6.2:mipssunos:5.5.1:sparclinux:2.0.32:x86win95::x86.

NSS tools : modutil
forwardcompatible { irix:6.2:mips sunos:5.5.1:sparc } platforms { winnt::x86 { modulename { "example module" } modulefile { win32/fort32.dll } defaultmechanismflags{0x0001} defaultcipherflags{0x0001} files { win32/setup.exe { executable relativepath { %temp%/setup.exe } } win32/setup.hlp { relativepath { %temp%/s...
...01} files { unix/fort.so { relativepath{%root%/lib/fort.so} absolutepath{/usr/local/netscape/lib/fort.so} filepermissions{555} } xplat/instr.html { relativepath{%root%/docs/inst.html} absolutepath{/usr/local/netscape/docs/inst.html} filepermissions{555} } } } irix:6.2:mips { equivalentplatform { sunos:5.5.1:sparc } } } script grammar the script is basic java, allowing lists, key-value pairs, strings, and combinations of all of them.
...nspr supports these platforms: o aix (rs6000) o bsdi (x86) o freebsd (x86) o hpux (hppa1.1) o irix (mips) o linux (ppc, alpha, x86) o macos (powerpc) o ncr (x86) o nec (mips) o os2 (x86) o osf (alpha) o reliantunix (mips) o sco (x86) o solaris (sparc) o sony (mips) o sunos (sparc) o unixware (x86) o win16 (x86) o win95 (x86) o winnt (x86) for example: irix:6.2:mips sunos:5.5.1:sparc linux:2.0.32:...

nsIJSON
when the original instance requiring this function is removed, this method will be removed.
... when the original instance requiring this function is removed, this method will be removed.
... when the original instance requiring this function is removed, this method will be removed.

Web Push API Notifications best practices - Web APIs
win them back with an expiring offer of free shipping that they can’t ignore!
... in addition to the question of whether a push notification is required at all, there are many different types of push notifications, ranging from casual-and-disappearing to persistent-and-requiring-interaction.
... we caution you to use the interaction-requiring ones very sparingly, since they can be the most annoying.

RTCIceCandidatePairStats.selected - Web APIs
that object's selectedcandidatepairid property indicates whether or not the specified transport is the one being used.
... example the function shown in this example identifies the currently-selected candidate pair from a statistics report by first iterating over each report, looking for a transport report; when one is found, that transport's selectedcandidatepairid is used to get the rtcicecandidatepair describing the connection.
... function getcurrentcandidatepair(statsresults) { statsresults.foreach(report => { if (report.type === "transport") { currentpair = statsresults.get(report.selectedcandidatepairid); } }); if (!currentpair) { statsresults.foreach(report => { if (report.type === "candidate-pair" && report.selected) { currentpair = report; } }); } return currentpair; } specifications not part of any specification.

WebRTC API - Web APIs
webrtc (web real-time communication) is a technology which enables web applications and sites to capture and optionally stream audio and/or video media, as well as to exchange arbitrary data between browsers without requiring an intermediary.
... the set of standards that comprise webrtc makes it possible to share data and perform teleconferencing peer-to-peer, without requiring that the user installs plug-ins or any other third-party software.
...connections between peers can be made without requiring any special drivers or plug-ins, and can often be made without any intermediary servers.

WindowOrWorkerGlobalScope.setTimeout() - Web APIs
timeouts in inactive tabs throttled to ≥ 1000ms to reduce the load (and associated battery usage) from background tabs, timeouts are throttled to firing no more often than once per second (1,000 ms) in inactive tabs.
... deferral of timeouts during pageload starting in firefox 66, firefox will defer firing settimeout and setinterval timers while the current tab is loading.
... firing is deferred until the mainthread is deemed idle (similar to window.requestidlecallback()), or until the load event is fired.

<input>: The Input (Form Input) element - HTML: Hypertext Markup Language
associated labels the semantic pairing of <input> and <label> elements is useful for assistive technologies such as screen readers.
... by pairing them using the <label>'s for attribute, you bond the label to the input in a way that lets screen readers describe inputs to users more precisely.
...by pairing a <label> with an <input>, clicking on either one will focus the <input>.

requiredExtensions - SVG: Scalable Vector Graphics
usage notes value <list-of-extensions> default value none animatable no <list-of-extensions> the value is a list of references (iri references in svg 1, url references in svg 2) which identify the required extensions, with the individual values separated by white space.
... the iri names for the extension should include versioning information, such as "http://example.org/svgextensionxyz/1.0", so that script writers can distinguish between different versions of a given extension.
... candidate recommendation iris replaced with urls scalable vector graphics (svg) 1.1 (second edition)the definition of 'requiredextensions' in that specification.

Modules - Archive of obsolete content
firstly, since they do not have a requiring module.
...this function takes the id to be resolved and the requiring module as an argument, and returns the resolved id as its result.

User Notifications and Alerts - Archive of obsolete content
« previousnext » it is often the case that extensions need to notify users about important events, often requiring some response.
... the alerts service this is a very good option when you want to alert users about events without requiring input from them.

Binding Attachment and Detachment - Archive of obsolete content
binding document loads suppress the firing of the dom load event for the bound document.
...if the binding document is loaded prior to the firing of the load event, then any binding attachments that are placed following the load will be synchronous if they come from one of these previously loaded binding documents.

Introduction to Public-Key Cryptography - Archive of obsolete content
instead of requiring a user to send passwords across the network throughout the day, single sign-on requires the user to enter the private-key database password just once, without sending it across the network.
... depending on an organization's policies, the process of issuing certificates can range from being completely transparent for the user to requiring significant user participation and complex procedures.

Other form controls - Learn web development
less obvious datalist uses according to the html specification, the list attribute and the <datalist> element can be used with any kind of widget requiring a user input.
... <progress max="100" value="75">75/100</progress> this is for implementing anything requiring progress reporting, such as the percentage of total files downloaded, or the number of questions filled in on a questionnaire.

JavaScript performance - Learn web development
some features requiring complex javascript can be done with a few lines of javascript.
... requiring a library for other features may improve developer experience, but is all that javascript required?

Gecko info for Windows accessibility vendors
gecko also helps determine when to load a new window by firing two event_state_change's on the root role_document accessible -- the first state change indicates the document pane is now busy loading.
...this computed child id for events is always a negative value, unique to the iaccessible firing the event these negative childid's from events can be used with accessibleobjectfromevent(), or on the root accessible of a window with any iaccessible method that takes a variant, such as get_accchild().

Debugging on Mac OS X
macos 10.15 went further, requiring applications to be notarized with hardened runtime enabled in order to launch (ignoring workarounds.) when run on earlier macos versions, notarization and hardened runtime settings have no effect.
...this is due to notarization requiring hardened runtime to be enabled with the com.apple.security.get-task-allow entitlement disallowed.

Using the Browser API
the javascript implementation to wire up the functionality required by our simple browser, we've written some basic javascript (see the full javascript listing.) wiring up the back and forward buttons early on in the code we implement two simple event listeners to move the browser back and forward in history when the relevant buttons are pressed: back.addeventlistener('touchend',function() { browser.goback(); }); fwd.addeventlistener('touchend',function() { browser.goforward(); }); the functions can be handled using the browser api htmliframeelement.go...
...you'll also notice that we're also firing these functions on the touchend event, which is effective as firefox os devices are generally touchscreen.

Localization and Plurals
es: slavic (slovenian, sorbian) ends in 01: 1, 101, 201, … ends in 02: 2, 102, 202, … ends in 03-04: 3, 4, 103, 104, 203, 204, … everything else: 0, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, … plural rule #11 (5 forms) families: celtic (irish gaelic) is 1: 1 is 2: 2 is 3-6: 3, 4, 5, 6 is 7-10: 7, 8, 9, 10 everything else: 0, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, … plural rule #12 (6 forms) families: semitic (arabic) is 1: 1 is 2: 2 ends in 03-10: 3, 4, 5, 6, 7, 8, 9...
...the plural rule number to create functions * @return a pair: [function that gets the right plural form, * function that returns the number of plural forms] */ [string pluralform get(int anum, string awords), int numforms numforms()] makegetter(int arulenum) here is an example usage of makegetter: components.utils.import("resource://gre/modules/pluralform.jsm"); // let's get irish (plural rule #11) let [get, numforms] = pluralform.makegetter(11); // make up some values to use with "get" let dummytext = "form 1;form 2;form 3;form 4;form 5"; let dummynum = 10; // in the case of irish, the value 10 uses plural form #4, so "form 4" is printed print(get(dummynum, dummytext)); in this example, the irish plural rule was hardcoded, but this could be a value specified in the .

Power profiling overview
some tools can provide high-context wakeup measurements: dtrace (on mac) and perf (on linux.) source-level instrumentation, such as timerfirings logging, can identify which timers are firing frequently.
... for high wakeup counts, use dtrace or perf or timerfirings logging.

Performance
xul school: add-on performance tips for add-on developers to help them avoid impairing application performance.
... timerfirings logging (all platforms) timerfirings logging is a built-in logging mechanism that prints data on every time fired.

Utilities for nss samples
esc *src); /* * checkpassword */ extern prbool checkpassword(char *cp); /* * getpassword */ extern char * getpassword(file *input, file *output, char *prompt, prbool (*ok)(char *)); /* * filepasswd extracts the password from a text file * * storing passwords is often used with server environments * where prompting the user for a password or requiring it * to be entered in the commnd line is not a feasible option.
... fprintf(output, "password must be at least 8 characters long with one or more\n"); fprintf(output, "non-alphabetic characters\n"); continue; } return (char*) port_strdup(phrase); } } /* * filepasswd extracts the password from a text file * * storing passwords is often used with server environments * where prompting the user for a password or requiring it * to be entered in the commnd line is not a feasible option.

PKCS11 Implement
to avoid requiring the user to type long pathnames, make sure your module is not buried too deeply.
...2.0 semantic requiring all session objects to be visible in all of a token's sessions.

Shell global objects
this just marks the promise as resolved with a value of undefined and causes the firing of any onpromisesettled hooks set on debugger instances that are observing the given promise's global as a debuggee.
...this doesn't have any observable effects outside of firing any onpromisesettled hooks set on debugger instances that are observing the given promise's global as a debuggee.

The Places database
delete favicons for those expiring history entries that are not referenced by any other history entry.
... delete annotations that belong to the expiring pages.

nsIDocShell
beginrestore() begin firing webprogresslistener notifications for restoring a page presentation.
...finishrestore() finish firing webprogresslistener notifications and dom events for restoring a page presentation.

Xptcall Porting Status
it is a variation of the iris port (only targeted for win32).
... <font color="white">done</font> irix jason heirtzler <jasonh@m7.engr.sgi.com> jason has declared this done.

MailNews fakeserver
server.start(port); // set up a nsimsgincomingserver locally localserver.someactionrequiringconnection(); server.performtest(); // nothing will be executed until the connection is closed // localserver.closecachedconnections() is generally a good way to do so server.resettest(); // set up second test server.performtest(); transaction = server.playtransaction(); // finished with tests server.stop(); } currently, fakeserver provides no means to keep a persistent conn...
...ection past a test, requiring connections to be closed, possibly forcibly.

Mail event system
getservice(components.interfaces.nsimsgmailsession); mailsession.addlistener(folderlistener); // now test to see if integer stuff is firing at all // let's say "folder" is a folder we know about // first we need an atom to play with atomservice = components.classes["component://netscape/atom-service"].
...both of these could be done by making atoms for each of these events and just firing it with notifyitemevent.

console - Web APIs
however, unlike group() this starts with the inline group collapsed requiring the use of a disclosure button to expand it.
...the console.groupcollapsed() method is similar but creates the new block collapsed, requiring the use of a disclosure button to open it for reading.

KeyboardEvent - Web APIs
note: manually firing an event does not generate the default action associated with that event.
... for example, manually firing a key event does not cause that letter to appear in a focused text input.

Payment Request API - Web APIs
it aims to make the checkout process easier, by remembering a user's details, which are then passed along to a merchant hopefully without requiring a html form.
... merchantvalidationevent represents the browser requiring the merchant (website) to validate themselves as allowed to use a particular payment handler (e.g., registered as allowed to use apple pay).

Pointer events - Web APIs
pointerout onpointerout fired for several reasons including: pointer is moved out of the hit test boundaries of an element; firing the pointerup event for a device that does not support hover (see pointerup); after firing the pointercancel event (see pointercancel); when a pen stylus leaves the hover range detectable by the digitizer.
...if the target area is too small, touching it could result in firing other events for adjacent elements.

RTCIceTransport.getSelectedCandidatePair() - Web APIs
as ice negotiation continues, any time a pair of candidates is discovered that is better than the currently-selected pair, the new pair is selected, replacing the previous pairing, and the selectedcandidatepairchange event is fired again.
... note: it's possible for one of the configurations in the selected candidate pair to remain unchanged when a new pairing is chosen.

RTCIceTransport.state - Web APIs
"checking" at least one remote candidate has been received, and the rtcicetransport has begun examining pairings of remote and local candidates in order to attempt to identify viable pairs that could be used to establish a connection.
...however, there are still candidates pairings to consider, and there may still be gathering underway on one or both of the two devices.

RTCIceTransportState - Web APIs
"checking" at least one remote candidate has been received, and the rtcicetransport has begun examining pairings of remote and local candidates in order to attempt to identify viable pairs that could be used to establish a connection.
...however, there are still candidates pairings to consider, and there may still be gathering underway on one or both of the two devices.

RTCRtpTransceiver.mid - Web APIs
the read-only rtcrtptransceiver interface's mid property specifies the negotiated media id (mid) which the local and remote peers have agreed upon to uniquely identify the stream's pairing of sender and receiver.
... syntax var mediaid = rtcrtptransceiver.mid; value a domstring which uniquely identifies the pairing of source and destination of the transceiver's stream.

RTCRtpTransceiver - Web APIs
the webrtc interface rtcrtptransceiver describes a permanent pairing of an rtcrtpsender and an rtcrtpreceiver, along with some shared state.
...this pairing of send and receive srtp streams is significant for some applications, so rtcrtptransceiver is used to represent this pairing, along with other important state from the media section.

Touch events - Web APIs
handling clicks since calling preventdefault() on a touchstart or the first touchmove event of a series prevents the corresponding mouse events from firing, it's common to call preventdefault() on touchmove rather than touchstart.
...alternatively, some frameworks have taken to refiring touch events as mouse events for this same purpose.

USB.getDevices() - Web APIs
for information on pairing devices, see usb.requestdevice().
...for information on pairing devices, see usb.requestdevice().

USB.requestDevice() - Web APIs
calling this function triggers the user agent's pairing flow.
...this triggers a user-agent flow that prompts the user to select a device for pairing.

Cognitive accessibility - Accessibility
for example, being able to extend the expiration time on an application requiring an authentication code sent to a mobile device via text message helps with the following scenarios: people with attention or anxiety disorders.
...when requiring a specific format for input, provide an example formatted in the proper way.

::first-letter (:first-letter) - CSS: Cascading Style Sheets
stet clita kasd gubergren, no sea takimata sanctus est.</p> <p>duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat.</p> css p { width: 500px; line-height: 1.5; } h2 + p::first-letter { color: white; background-color: black; border-radius: 2px; box-shadow: 3px 3px 0 red; font-size: 250%; padding: 6px 3px; margin-right: 6px; float: left; } result effect on special punctuation and non-latin characters this example illust...
... html <p>duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat.</p> <p>-the beginning of a special punctuation mark.</p> <p>_the beginning of a special punctuation mark.</p> <p>"the beginning of a special punctuation mark.</p> <p>'the beginning of a special punctuation mark.</p> <p>*the beginning of a special punctuation mark.</p> <p>#the beginning of a special punctuation mark.</p> <p>「特殊的汉字标点符号开头。</p> <p>《特殊的汉字标点符号开头。</p> <p>“特殊的汉字标点符号开头。</p> css p::first-letter { color: red; font-size: 150%; } result specifications specification status comment css pseudo-ele...

OpenType font features guide - CSS: Cascading Style Sheets
these include things like ligatures (special glyphs that combine characters like 'fi' or 'ffl'), kerning (adjustments to the spacing between specific letterform pairings), fractions, numeral styles, and a number of others.
... kerning (font-kerning) this refers to the spacing between specific glyph pairings.

CSS Fonts - CSS: Cascading Style Sheets
p { width: 600px; margin: 0 auto; font-family: "helvetica neue", "arial", sans-serif; font-style: italic; font-weight: 100; font-variant-ligatures: normal; font-size: 2rem; letter-spacing: 1px; } <p>three hundred years ago<br> i thought i might get some sleep<br> i stretched myself out onna antique bed<br> an' my spirit did a midnite creep</p> the result is as follows: variable fonts examples you can find a number of variable fonts examples at v-fonts.com and axis-praxis.org; see also our variable fonts guide for more information and usage information.
...these include things like ligatures (special glyphs that combine characters like 'fi' or 'ffl'), kerning (adjustments to the spacing between specific letterform pairings), fractions, numeral styles, and a number of others.

text-transform - CSS: Cascading Style Sheets
the text-transform property takes into account language-specific case mapping rules such as the following: in turkic languages, like turkish (tr), azerbaijani (az), crimean tatar (crh), volga tatar (tt), and bashkir (ba), there are two kinds of i, with and without the dot, and two case pairings: i/İ and ı/i.
... in irish (ga), certain prefixed letters remain in lowercase when the base initial is capitalized, so for example text-transform: uppercase will change ar aon tslí to ar aon tslÍ and not, as one might expect, ar aon tslÍ (firefox only).

<input type="month"> - HTML: Hypertext Markup Language
this value must specify a year-month pairing later than or equal to the one specified by the min attribute.
... this value must be a year-month pairing which is earlier than or equal to the one specified by the max attribute.

<script>: The Script element - HTML: Hypertext Markup Language
defer this boolean attribute is set to indicate to a browser that the script is meant to be executed after the document has been parsed, but before firing domcontentloaded.
... scripts with the defer attribute will prevent the domcontentloaded event from firing until the script has loaded and finished evaluating.

Using dns-prefetch - Web Performance
second, it’s also possible to specify dns-prefetch (and other resources hints) as an http header by using the http link field: link: <https://fonts.gstatic.com/>; rel=dns-prefetch third, consider pairing dns-prefetch with the preconnect hint.
... the logic behind pairing these hints is because support for dns-prefetch is better than support for preconnect.

SVG Core Attributes - SVG: Scalable Vector Graphics
value type: <integer>; animatable: no xml:base specifies a base iri other than the base iri of the document.
... value type: <iri>; animatable: no xml:lang it is a universal attribute allowed in all xml dialects to mark up the natural human language that an element contains.

color-profile - SVG: Scalable Vector Graphics
as a presentation attribute, it can be applied to any element but it only has an effect on the following element: <image> usage notes value auto | srgb | <name> | <iri> default value auto animatable yes auto all colors are presumed to be defined in the srgb color space unless a more precise embedded profile is specified within content data.
... <iri> an iri reference to the source color profile.

cursor - SVG: Scalable Vector Graphics
this attribute behaves exactly like the css cursor property except that if the browser supports the <cursor> element, you should be able to use it with the <funciri> notation.
... usage context categories presentation attribute value [[<funciri>,]* [ auto | crosshair | default | pointer | move | e-resize | ne-resize | nw-resize | n-resize | se-resize | sw-resize | s-resize | w-resize| text | wait | help ]] | inherit animatable yes normative document svg 1.1 (2nd edition) <funciri> functional notation for a reference.

xml:base - SVG: Scalable Vector Graphics
the xml:base attribute specifies a base iri other than the base iri of the document or external entity.
... usage notes value <iri> default value none animatable no <iri> this value specifies the base iri of the element.

<altGlyph> - SVG: Scalable Vector Graphics
value type: <string> ; default value: none; animatable: no xlink:href an <iri> reference either to a <glyph> element in an svg document or to an <altglyphdef> element.
... value type: <iri> ; default value: none; animatable: no global attributes core attributes most notably: id lang styling attributes class, style conditional processing attributes most notably: requiredextensions, systemlanguage event attributes global event attributes, document element event attributes, graphical event attributes presentation attributes most notably: clip-path, clip-rule, color, colo...

<linearGradient> - SVG: Scalable Vector Graphics
value type: <length> ; default value: 100%; animatable: yes xlink:href an <iri> reference to another <lineargradient> element that will be used as a template.
... value type: <iri> ; default value: none; animatable: yes y1 this attribute defines the y coordinate of the starting point of the vector gradient along which the linear gradient is drawn.

<radialGradient> - SVG: Scalable Vector Graphics
value type: pad|reflect|repeat ; default value: pad; animatable: yes xlink:href an <iri> reference to another <lineargradient> element that will be used as a template.
... value type: <iri> ; default value: none; animatable: yes global attributes core attributes most notably: id styling attributes class, style event attributes global event attributes, document element event attributes presentation attributes most notably: clip-path, clip-rule, color, color-interpolation, color-rendering, cursor, display, fill, fill-opacity, fill-rule, filter, mask, opacity, pointer-events, shape-rendering, stroke, stroke-dasharray, stroke-dashoffset, stroke-linecap, stroke-linejoin, stroke-miterlimit, stroke-opacity, stroke-width, transform, vector-effect, visibility xlink attributes xlink:href, xlink:title usage notes categoriesgradient elementpermitted contentany number of the following elements, in any order:descriptive elements<animate>, <animatetransform...

<use> - SVG: Scalable Vector Graphics
value type: <url> ; default value: none; animatable: yes xlink:href an <iri> reference to an element/fragment that needs to be duplicated.
... value type: <iri> ; default value: none; animatable: yes x the x coordinate of the use element.

SVG documentation index - SVG: Scalable Vector Graphics
257 xlink:href needscompattable, svg, svg attribute the xlink:href attribute defines a reference to a resource as a reference iri.
... 261 xml:base deprecated, svg, svg attribute the xml:base attribute specifies a base iri other than the base iri of the document or external entity.

/loader - Archive of obsolete content
resolve is assigned a function that takes: the id of the module passed into require() the id of the module that called require() on each require() call, the supplied function is then called with the id of the required module and that of the requiring module.

package.json - Archive of obsolete content
it looks like this (assuming the add-on's directory is "my-addon"): { "name": "my-addon", "title": "my-addon", "id": "jid1-1fergv45e4f4f@jetpack", "description": "a basic add-on", "author": "", "license": "mpl-2.0", "version": "0.1" } if you are using the new jpm tool, you can easily access manifest data from package.json by requiring it like any other module: var title = require("./package.json").title; key reference package.json may contain the following keys: author the name of the package's original author; this could be the name of a person or a company.

JavaScript Debugger Service - Archive of obsolete content
snippets acquiring the service we acquire the service by calling the xpcom object.

Extension Etiquette - Archive of obsolete content
general dependencies requiring a user to download another extension in order to use yours isn't nice.

How to convert an overlay extension to restartless - Archive of obsolete content
reportedly xmlhttprequest doesn't work reliably when used in jsm under versions of firefox less than 16, however as previously mentioned, this guide should be taken as requiring firefox 17+.

Listening to events in Firefox extensions - Archive of obsolete content
the first time the page loads, the pageshow event fires just after the firing of the load event.

Appendix: What you should know about open-source software licenses - Archive of obsolete content
also, by requiring patent disclosures, it avoids the problem of submarine patents.

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.

Security best practices in extensions - Archive of obsolete content
this is the same store that holds the logins from web pages, and passwords can only be retrieved using a site/username pairing known to the author.

Inner-browsing extending the browser navigation paradigm - Archive of obsolete content
the following code snippet shows a simplified version of the logic that happens in the actual sample: // doc is the dom to the document returned articles=doc.getelementsbytagname("article"); for(i=0;i<articles.length;i++) { // acquiring the data from the dom...

List of Mozilla-Based Applications - Archive of obsolete content
ulrunner just (fr) audio a tool for setting temporal tags in audio documents jsdoc toolkit documentation tool uses mozilla rhino k-meleon gecko-based web browser for windows embeds gecko in mfc kairo.at mandelbrot creates images of mandelbrot sets xulrunner application kazehakase gecko-based web browser for unix kirix strata data browser kiwix offline version of wikipedia kneemail prayer, praise, and journal application komodo and komodo edit and open komodo development tools mozilla-based application (pre-xulrunner style), xul ui kompozer wysiwyg html editor unofficial bug-fix release of nvu kylo video browser uses gecko ...

Structure of an installable bundle - Archive of obsolete content
basic structure of a bundle a bundle may include any of the following files: path from the root of the bundle description version information /install.rdf extension/theme install manifest /application.ini application launch manifest /bootstrap.js the bootstrap script for extensions not requiring a restart (those with <em:bootstrap>true</em:bootstrap> in their install.rdf).

Migrate apps from Internet Explorer to Mozilla - Archive of obsolete content
browser sniffing is usually done through the useragent, such as: mozilla/5.0 (x11; u; linux i686; en-us; rv:1.5) gecko/20031016 while using the useragent to sniff the browser provides detailed information on the browser in use, code that handles useragents often can make mistakes when new browser versions arrive, thus requiring code changes.

Plug-n-Hack Phase1 - Archive of obsolete content
this can cause the browser to inspect the manifest and register the tool by firing a customevent with the type configuresectool and a properties object which specifies the url of the tool manifest.

Binding Implementations - Archive of obsolete content
property initialization always takes place after content generation but before the firing of a binding attachment event, since the bindingattached handler needs to be able to assume that all properties will be accessible on the binding.

XBL - Archive of obsolete content
it's similar in spirit to mozilla's xbl, but there are a few subtle (and not-so-subtle) differences.

Building accessible custom components in XUL - Archive of obsolete content
this would allow xul developers to add a single spreadsheet element to their xul applications (for example), with rowheader, columnheader, and cell elements as children, without requiring them to manage the accessibility support for each spreadsheet control.

Introduction to XUL - Archive of obsolete content
individual extensions are described in individual documents dedicated to the features requiring the extensions.

Multiple Rule Example - Archive of obsolete content
but, you could use a <binding> to get the date without requiring it to match the conditions.

Introduction - Archive of obsolete content
this is used when you don't want to have the larger size of a complete xulrunner application, but don't mind requiring a mozilla browser to be installed to be able to run the application.

XUL Questions and Answers - Archive of obsolete content
pass a python string/int/etc to the method requiring an nsivariant.

Getting started with XULRunner - Archive of obsolete content
in ubuntu desktop and its variants (xubuntu, kubuntu, ...), from version 11.10 (oneiric ocelot), xulrunner is not longer maintained and doesn't exist in ubuntu repository.

XULRunner Hall of Fame - Archive of obsolete content
build instructions kirix strata a new specialty browser for accessing and manipulating data from the web telekast an open source teleprompter and script editor.

calICalendarView - Archive of obsolete content
this link allows the calicalendarview to have a way of creating, modifying, and deleting events based on user interaction with the dom nodes it controls, often without requiring any other user interaction.

Mozilla release FAQ - Archive of obsolete content
this list will be updated with time, but (according to netscape.public.mozilla.general) the following platforms have been built successfully: solaris 2.4, 2.5, 2.6 freebsd 2.2, 3.0 linux/intel and alpha 2.0, 2.1 macos winnt 4.0 irix 5.3, 6.2, 6.3, 6.4 win95, win98 digital unix 4.0 netbsd openbsd bsdi hp/ux 9.05, 10.20, 11.0 (see 2.7) hurd .03 dg/ux mac os x i'm *still* having problems getting mozilla to build on my platform!

2006-10-13 - Archive of obsolete content
firefox add-on wanted user is inquiring if there is such an application to automatically save pieces of a webpage everytime is it updated.

2006-11-03 - Archive of obsolete content
firing pageshow/pagehide when users change tabs discussion about using events that could be fired when the user changes a tab.

Encryption and Decryption - Archive of obsolete content
for a public key algorithm, breaking the algorithm usually means acquiring the shared secret information between two recipients.

Theme changes in Firefox 2 - Archive of obsolete content
browser changes requiring theme updates there are a number of changed and deleted files in the browser that may require you to make changes to your theme.

Theme changes in Firefox 3.5 - Archive of obsolete content
core, browser and toolkit changes requiring theme updates there are a number of changes in the browser that may require you to make changes to your theme.

Theme changes in Firefox 3 - Archive of obsolete content
browser changes requiring theme updates there are a number of changed and deleted files in the browser that may require you to make changes to your theme.

Developing cross-browser and cross-platform pages - Archive of obsolete content
this method has the advantage of not requiring you to test for anything except whether the particular features you code are supported in the visiting browser.

Browser Detection and Cross Browser Support - Archive of obsolete content
java3, is_hotjava3up, is_opera2, is_opera3, is_opera4, is_opera5, is_opera5up javascript version number is_js (float indicating full javascript version number: 1, 1.1, 1.2 ...) os platform and version is_win, is_win16, is_win32, is_win31, is_win95, is_winnt, is_win98, is_winme, is_win2k, is_os2, is_mac, is_mac68k, is_macppc, is_unix, is_sun, is_sun4, is_sun5, is_suni86, is_irix, is_irix5, is_irix6, is_hpux, is_hpux9, is_hpux10, is_aix, is_aix1, is_aix2, is_aix3, is_aix4, is_linux, is_sco, is_unixware, is_mpras, is_reliant, is_dec, is_sinix, is_freebsd, is_bsd, is_vms detecting browsers using this level of detail is unworkable, unmaintainable and violates the basic principles of web authoring!

New in JavaScript 1.1 - Archive of obsolete content
isnan() now works on every platform (not only unix anymore) parsefloat() and parseint() now return nan on all platforms, if the first character of the specified string cannot be converted to a number; in previous releases, it returned nan on solaris and irix and zero on all other platforms.

Styling the Amazing Netscape Fish Cam Page - Archive of obsolete content
i'd like to think that the final result was in keeping with the original spirit of the amazing netscape fish cam page while giving it a nice new css-driven look.

forEach - Archive of obsolete content
if (value>1){ return false;//we could have some way to break when we return false } }); //woulld print 1 2 --porfirio 11:17, 22-06-2008 another option would be to throw stopiteration and catch it within foreach().

Implementation Status - Archive of obsolete content
8.1.9 submit supported 8.1.10 select partial @selection does not work, select inside repeat may not work correctly, select that mixes itemsets with items may show them in the wrong order 282840; 371595; 372127; 8.1.11 select1 partial there are some resize issues, select/deselect/valuechange firing in wrong order.

Choosing Standards Compliance Over Proprietary Practices - Archive of obsolete content
common development process as an organization matures, managers and engineers develop a fundamental understanding of the importance of requiring adherence to these processes.

The Business Benefits of Web Standards - Archive of obsolete content
familiarity with dreamweaver or any other legacy software is not a good basis for hiring creative development personnel.

Building up a basic demo with PlayCanvas - Game development
engine vs editor the engine itself can be used as a standard library by including its javascript file directly in your html, so you can start coding right away; in addition the playcanvas toolset comes with an online editor that you can use to drag and drop components onto the scene — a great way to create games and other apps requiring scenes if you're more of a designer than a coder.

Audio for Web games - Game development
see also web audio api on mdn <audio> on mdn developing game audio with the web audio api (html5rocks) mixing positional audio and webgl (html5rocks) songs of diridum: pushing the web audio api to its limits making html5 audio actually work on mobile audio sprites (and fixes for ios) ...

Desktop mouse and keyboard controls - Game development
we can also offer firing control alternatives.

Unconventional controls - Game development
interestingly enough, the first captain rogers game (asteroid belt of sirius) was optimized for low-end, small-screen, cheap smartphones running firefox os, so you can see the difference three years can make — you can read the whole story in our building games for firefox os tv hacks post.

Implementing controls using the Gamepad API - Game development
the index variable is useful if we're connecting more than one controller and want to identify them to act accordingly — for example when we have a two-player game requiring two devices to be connected.

Gecko FAQ - Gecko Redirect 1
such porting efforts are underway for solaris, hp/ux, aix, irix, os/2, openvms, beos, and amiga, among others.

ALPN - MDN Web Docs Glossary: Definitions of Web-related terms
application-layer protocol negotiation (alpn) is a tls extension which indicates what application layer protocol is negotiating the encryped connection without requiring additional round trips.

IRC - MDN Web Docs Glossary: Definitions of Web-related terms
irc (internet relay chat) is a worldwide chat system requiring an internet connection and an irc client, which sends and receives messages via the irc server.

Mixin - MDN Web Docs Glossary: Definitions of Web-related terms
a mixin is a class or interface in which some or all of its methods and/or properties are unimplemented, requiring that another class or interface provide the missing implementations.

SEO - MDN Web Docs Glossary: Definitions of Web-related terms
seo combines official search engine guidelines, empirical knowledge, and theoretical knowledge from science papers or patents.

Transport Layer Security (TLS) - MDN Web Docs Glossary: Definitions of Web-related terms
all modern browsers support the tls protocol, requiring the server to provide a valid digital certificate confirming its identity in order to establish a secure connection.

Accessible multimedia - Learn web development
wiring up our buttons first, let's set up the play/pause button.

How CSS is structured - Learn web development
when a property is paired with a value, this pairing is called a css declaration.

Web fonts - Learn web development
d-opentype'), url('fonts/cicle_fina-webfont.woff2') format('woff2'), url('fonts/cicle_fina-webfont.woff') format('woff'), url('fonts/cicle_fina-webfont.ttf') format('truetype'), url('fonts/cicle_fina-webfont.svg#ciclefina') format('svg'); font-weight: normal; font-style: normal; } this is referred to as "bulletproof @font-face syntax", after a post by paul irish from early on when @font-face started to get popular (bulletproof @font-face syntax).

Learn to style HTML using CSS - Learn web development
in the following video, miriam suzanne provides a useful explanation of why css works like it does, and why it has evolved like it has: ...

Advanced form styling - Learn web development
to recap what we said in the previous article, we have: the bad: some elements are more difficult to style, requiring more complex css or some more specific tricks: checkboxes and radio buttons <input type="search"> the ugly: some elements can't be styled thoroughly using css.

Styling web forms - Learn web development
multi-line <textarea>s buttons (both <input> and <button>s) <label> <output> the bad some elements are more difficult to style, requiring more complex css or some more specific tricks: checkboxes and radio buttons <input type="search"> we describe how to handle these more specific features in the article advanced form styling.

Introduction to events - Learn web development
we are listening for the click event firing, by setting the onclick event handler property to equal an anonymous function containing code that generates a random rgb color and sets the <body> background-color equal to it.

Functions — reusable blocks of code - Learn web development
when creating functions, it is better to just stick to this form: function mygreeting() { alert('hello'); } you will mainly use anonymous functions to just run a load of code in response to an event firing — like a button being clicked — using an event handler.

Video and Audio APIs - Learn web development
we do however also want to stop the video when it finishes playing — this is marked by the ended event firing, so we also set up a listener to run the function on that event firing too.

A first splash into JavaScript - Learn web development
the constructs that listen out for the event happening are called event listeners, and the blocks of code that run in response to the event firing are called event handlers.

Web performance resources - Learn web development
the following snippet includes an onload attribute, requiring javascript, so it is important to include a noscript tag with a traditional fallback.

Introduction to the server side - Learn web development
you will shortly receive an email confirming your registration, or requiring acknowledgment to activate your account.

Ember interactivity: Events, classes and state - Learn web development
the first argument passed to on is the type of event to respond to (keydown), and the last argument is the event handler — the code that will run in response to the keydown event firing.

Deployment and next steps - Learn web development
note: the following section could be applied to any client-side static web site requiring a build step, not just svelte apps.

Vue conditional rendering: editing existing todos - Learn web development
to understand this better, it is a good idea to write out a flow chart, description, or diagram of what events are emitted where, where they are being listened for, and what happens as a result of them firing.

Adding a new todo form: Vue events, methods, and models - Learn web development
to fix that, we can prevent the todo-added event from firing when name is empty.

Understanding client-side JavaScript frameworks - Learn web development
as an aspiring front-end developer, it can be hard to work out where to begin when learning frameworks — there are so many different frameworks to choose from, new ones appear all the time, they mostly work in a similar way but do some things differently, and there are some specific things to be careful about when using frameworks.

Links and Resources
guidelines & standards information and resources on section 508 - legal policy for us government purchases requiring software accessibility.

Index
680 resources for publishers add-ons, extensions, distribution, publication now your add-on is published on amo, check out the following resources: 681 retiring your extension extensions, webextension, end-of-life, publication there may be occasions where you want to retire one of your extensions.

OS TARGET
winnt linux darwin android sunos freebsd openbsd netbsd os2 beos irix64 aix hp-ux dragonfly skyos riscos nto osf1 ...

Experimental features in Firefox
nightly 80 yes developer edition 80 yes beta 80 no release 80 no preference name devtools.netmonitor.features.serversentevents ui desktop zooming this feature lets you enable smooth pinch zooming on desktop computers without requiring layout reflows, just like mobile devices do.

Performance
not only does that increase memory footprint but the deserialization also has to be executed seperately for each tab, thus requiring more cpu time.

HTMLIFrameElement.clearMatch()
invoking this method results in a mozbrowserfindchange event firing, which carries details about the search results.

HTMLIFrameElement.findAll()
invoking this method results in a mozbrowserfindchange event firing, which carries details about the search results.

HTMLIFrameElement.findNext()
invoking this method results in a mozbrowserfindchange event firing, which carries details about the search results.

Overview of Mozilla embedding APIs
to facilitate this, a set of global functions are available to access the nsmemory methods without requiring an instance of the nsmemory service (see nsmemory.h).

Gecko Keypress Event
d be no chrome access keys with punctuation characters or other characters that would normally require depressing the shift key.) during accel key handling, if the event includes the shift modifier, but an alternative charcode is not a bicameral letter (i.e., it does not have upper and lower case forms), then the shift modifier state should be ignored if there is no exactly matching handler (requiring shift to be down).

JavaScript Tips
some xpcom methods expect an object that implements several interfaces thus requiring you to write a queryinterface method.

Addon
operationsrequiringrestart read only integer a bitfield holding all of the operations that will require a restart to complete for this add-on.

AddonManager
operations requiring restart constant description op_needs_restart_none no operations will require a restart.

DownloadSummary
this allows the summary to be used without requiring the initialization of the downloadlist first.

Downloads.jsm
the download object can be used without requiring direct database access.

JavaScript code modules
ctypes.jsm provides an interface that allows javascript code to call native libraries without requiring the development of an xpcom component.

gettext
consider another example, gaeilge (irish): plural-forms: nplurals=3; plural=n==1 ?

Fonts for Mozilla's MathML engine
if you are likely to need these characters, we recommend to install the xits or amiri fonts.

MathML Accessibility in Mozilla
mozilla and nvda developers essentially do not have control on how mathematical formulas are read, please contact design science for any inquiries.

powermetrics
for example, firing a single sub-2ms deadline can also cause a package idle exit wakeup.

Preferences
the preference system makes it possible to store data for mozilla applications using a key/value pairing system.

Introduction to NSPR
acquiring a lock is a synchronous operation.

PR_Lock
acquiring the lock is not an interruptible operation, nor is there any timeout mechanism.

JSS
jss source should now be checked out from the github: git clone git@github.com:dogtagpki/jss.git -- or -- git clone https://github.com/dogtagpki/jss.git all future upstream enquiries to jss should now use the pagure issue tracker system: https://pagure.io/jss/issues documentation regarding the jss project should now be viewed at: http://www.dogtagpki.org/wiki/jss note: as much of the jss documentation is sorely out-of-date, updated information will be a work in progress, and many portions of any legacy documentation will be re-written over the course of time.

NSS 3.22 release notes
r pbkdf (not supported) ckp_pkcs5_pbkd2_hmac_sha512_256 - prf based on hmac with sha-512 truncated to 256 bits for pbkdf (not supported) in secoidt.h nss_use_alg_in_ssl nss_use_policy_in_ssl in ssl.h ssl_enable_signed_cert_timestamps in sslt.h ssl_max_extensions is updated to 13 notable changes in nss 3.22 nss c++ tests are built by default, requiring a c++11 compiler.

NSS API Guidelines
this method is a more complicated than the other methods: requiring the calling of search code tolerant to often repeated element inspection.

NSS Sample Code Utilities_1
fprintf(output, "password must be at least 8 characters long with one or more\n"); fprintf(output, "non-alphabetic characters\n"); continue; } return (char*) port_strdup(phrase); } } /* * filepasswd extracts the password from a text file * * storing passwords is often used with server environments * where prompting the user for a password or requiring it * to be entered in the command line is not a feasible option.

PKCS11 FAQ
in the past, nss uses the invalid session handle to mark problems with acquiring or using a session.

Python binding for NSS
this was fixable in python-nss without requiring a patch to nss.

NSS Tools
overall objectives provide a tool for analyzing and repairing certificate databases (dbck).

Tracing JIT
if the side exit condition indicates that the trace exited unsuccessfully -- due to encountering sufficient memory pressure to trigger a garbage collection, running out of native stack space, expiring a timer or any similar abnormal condition -- the monitor returns to monitoring mode.

JS_NewGlobalObject
if an error occurs and the operation aborts, callers should skip firing the hook.

Split object
in the spirit of this rule, js_getscopechain should always return an inner object.

Secure Development Guidelines
race conditions: prevention be very careful when working with threads, the file system, or signals track down shared resources and lock them accordingly for signal handlers never use non-atomic operations longjmp() is a sign of badness even exit() could cause problems, but _exit() is okay deadlocks and locking issues locks are used when dealing with threads acquiring more than one lock to perform an action if a second thread acquires the same locks but in a different order, it causes denial of service since both threads will be waiting forever deadlocks and locking issues example func_a() { lock(locka); lock(lockb); ...

History Service Design
expiration expiration is an important part of data management for two reasons: privacy: expiring data based on user interaction is important, nothing must be left behind on a page removal database maintenance: having cleaner and smaller tables helps queries performances expiration is done at certain moments, but in future will most likely be moved to async queries, to be executed on a separate thread.

Building the WebLock UI
grouping radio elements together creates the toggling ui by requiring that one or another of the elements be selected, but not both.

XPCOM Stream Guide
seekable streams some streams are "seekable": they let you specify where in the stream you are reading from (instead of requiring it be from the beginning).

Monitoring HTTP activity
this is very simple, requiring you to implement a single method, nsihttpactivityobserver.observeactivity(), which gets called each time an action of interest takes place on the http channel.

Observer Notifications
telemetry topic data description gather-telemetry - note: this is obsolete and planned to be removed as it's not firing at the proper times.

mozIRegistry
clients requiring dynamic "binding" of clsids will be required to use some higher-level services (tbd) to figure out the clsids they should use.

nsIContentViewer
pagehide() void pagehide( in boolean isunload ); parameters isunload missing description exceptions thrown missing exception missing description permitunload() determins whether or not the document wants to prevent unloading by firing beforeunload on the document, and if it does, prompts the user.

nsIMsgDBHdr
for the currently selected message, thunderbird provides a utility function: setmsghdrpropertyandreload(aproperty, avalue); which duplicates this functionality without requiring you to grab the current header.

nsIProtocolHandler
(many servers do not support utf-8 iris at the present time, so we must be careful about tracking the native charset of the origin server.) nsiuri newuri( in autf8string aspec, in string aorigincharset, in nsiuri abaseuri ); parameters aspec the uri string in utf-8 encoding.

XPCOM Interface Reference
dow2nsidomwindowinternalnsidomwindowutilsnsidomxpathevaluatornsidomxpathexceptionnsidomxpathexpressionnsidomxpathresultnsidomxulcontrolelementnsidomxulelementnsidomxullabeledcontrolelementnsidomxulselectcontrolelementnsidomxulselectcontrolitemelementnsidatasignatureverifiernsidebugnsidebug2nsidevicemotionnsidevicemotiondatansidevicemotionlistenernsidialogcreatornsidialogparamblocknsidictionarynsidirindexnsidirindexlistenernsidirindexparsernsidirectoryenumeratornsidirectoryiteratornsidirectoryservicensidirectoryserviceprovidernsidirectoryserviceprovider2nsidiskcachestreaminternalnsidispatchsupportnsidocshellnsidocumentloadernsidownloadnsidownloadhistorynsidownloadmanagernsidownloadmanageruinsidownloadobservernsidownloadprogresslistenernsidownloadernsidragdrophandlernsidragservicensidragsession...

XPCOM Interface Reference by grouping
rvice nsicomponentregistrar internationalization nsibidikeyboard nsilocale io filesystem nsidirectoryenumerator nsidirectoryiterator nsidirectoryservice nsidirectoryserviceprovider nsidirectoryserviceprovider2 nsidirindex nsidirindexlistener nsidirindexparser nsifile nsilocalfile stream nsiasyncinputstream nsiasyncoutputstream nsiasyncstreamcopier nsibinaryinputstream nsibinaryoutputstream nsicontentsniffer nsiconverterinputstream nsifil...

nsMsgViewCommandType
cmdrequiringmsgbody 20 used with nsimsgdbview.getcommandstatus() to determine if commands requiring the message body (i.e.

Performance
for example, the history service used to delete many database items at shutdown when expiring old history items.

Reference Manual
the destructor, which corresponds to client code calling release against a raw xpcom interface pointer, is factored, requiring the extra time required to invoke a subroutine call, though this is balanced against the cost already present in both cases of calling release which may, in turn, invoke delete and the referents destructor.

Using nsIDirectoryService
you may wish that you could have mozilla use these locations rather than requiring the same disk layout as seamonkey.

XPCOM ABI
e cpu architecture and may be either: x86 - i386 and higher series (including x86-64 cpus in 32-bit mode) ppc - powerpc series alpha - alpha series x86_64 - amd64/emt64 series in 64-bit mode (32-bit mode is still considered x86) sparc - sparc series ia64 - itanium series {target_compiler_abi}[platforms] represents the compiler abi and may be either: msvc - microsoft visual c++ n32 - irix 6 c++ compiler gcc2 - gnu c++ compiler 2.x gcc3 - gnu c++ compiler 3.x or 4.x sunc - sun c++ compiler ibmc - ibm c++ compiler for example: firefox built with the gnu c++ compiler 4.0.0 for the intel pentium processor would have xpcom abi of x86-gcc3 the xpcom abi string can be retrieved programmatically by using the nsixulruntime interface.

xptcall FAQ
though the chosen approach requires some core platform specific code, it has minimal footprint and is extendable to work with any valid xpcom interface without requiring additional per platform compiled code to be distributed.

WebIDL bindings
nt handler attributes, like: attribute eventhandler onthingchange; if you need to implement an event handler attribute for an interface, in the definition (header file), you use the handy "impl_event_handler" macro: impl_event_handler(onthingchange); the "onthingchange" needs to be added to the staticatoms.py file: atom("onthingchange", "onthingchange") the actual implementation (.cpp) for firing the event would then look something like: nsresult myinterface::dispatchthingchangeevent() { ns_named_literal_string(type, "thingchange"); eventinit init; init.mbubbles = false; init.mcancelable = false; refptr<event> event = event::constructor(this, type, init); event->settrusted(true); errorresult rv; dispatchevent(*event, rv); return rv.stealnsresult(); // assumi...

Mozilla
preferences the preference system makes it possible to store data for mozilla applications using a key/value pairing system.

Debugger - Firefox Developer Tools
setting this to false prevents this debugger instance from requiring any code coverage instrumentation, but it does not guarantee that the instrumentation is not present.

Beacon API - Web APIs
requests are guaranteed to be initiated before a page is unloaded and they are run to completion, without requiring a blocking request (for example xmlhttprequest).

CanvasRenderingContext2D.filter - Web APIs
takes an iri pointing to an svg filter element, which may be embedded in an external xml file.

Document: pointerout event - Web APIs
the pointerout event is fired for several reasons including: pointing device is moved out of the hit test boundaries of an element; firing the pointerup event for a device that does not support hover (see pointerup); after firing the pointercancel event (see pointercancel); when a pen stylus leaves the hover range detectable by the digitizer.

DragEvent - Web APIs
this firing pattern is different than mouseover ).

Element.getBoundingClientRect() - Web APIs
cross-browser fallback scripts requiring high cross-browser compatibility can use window.pagexoffset and window.pageyoffset instead of window.scrollx and window.scrolly.

Element: webkitmouseforcechanged event - Web APIs
this event first fires after the mousedown event and stops firing before the mouseup event.

Element: webkitmouseforcewillbegin event - Web APIs
safari for macos fires the non-standard webkitmouseforcewillbegin event at an element before firing the initial mousedown event.

EventTarget.addEventListener() - Web APIs
the proprietary mselementresize event, when paired with the addeventlistener method of registering event handlers, provides similar functionality as onresize, firing when certain html elements are resized.

Force Touch events - Web APIs
this event first fires after the mousedown event and stops firing before the mouseup event.

Using FormData Objects - Web APIs
this allows a formdata object to be quickly obtained in response to a formdata event firing, rather than needing to put it together yourself.

FormDataEvent - Web APIs
this allows a formdata object to be quickly obtained in response to a formdata event firing, rather than needing to put it together yourself when you wish to submit form data via a method like xmlhttprequest (see using formdata objects).

Fullscreen API - Web APIs
note: support for this api varies somewhat across browsers, with many requiring vendor prefixes and/or not implementing the latest specification.

Using the Gamepad API - Web APIs
technologies like <canvas>, webgl, <audio>, and <video>, along with javascript implementations, have matured to the point where they can now support many tasks previously requiring native code.

GlobalEventHandlers.onerror - Web APIs
source: url of the script where the error was raised (string) lineno: line number where error was raised (number) colno: column number for the line where the error occurred (number) error: error object (object) when the function returns true, this prevents the firing of the default event handler.

HTMLElement: pointerout event - Web APIs
the pointerout event is fired for several reasons including: pointing device is moved out of the hit test boundaries of an element; firing the pointerup event for a device that does not support hover (see pointerup); after firing the pointercancel event (see pointercancel); when a pen stylus leaves the hover range detectable by the digitizer.

HTMLImageElement.loading - Web APIs
images whose loading attribute is set to lazy but are located within the visual viewport immediately upon initial page load are loaded as soon as the layout is known, but their loads do not delay the firing of the load event.

HTMLInputElement: search event - Web APIs
bubbles yes cancelable no interface event event handler property onsearch there are several ways a search can be initiated, such as by pressing enter while the <input> is focused, or, if the incremental attribute is present, after a ua-defined timeout elapses since the most recent keystroke (with new keystrokes resetting the timeout so the firing of the event is debounced).

HTMLMediaElement.autoplay - Web APIs
if you must offer autoplay functionality, you should make it opt-in (requiring a user to specifically enable it).

HTMLMediaElement: canplay event - Web APIs
bubbles no cancelable no interface event target element default action none event handler property globaleventhandlers.oncanplay specification html5 media examples these examples add an event listener for the htmlmediaelement's canplay event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: canplaythrough event - Web APIs
no cancelable no interface event target element default action none event handler property globaleventhandlers.oncanplaythrough specification html5 media examples these examples add an event listener for the htmlmediaelement's canplaythrough event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: durationchange event - Web APIs
no cancelable no interface event target element default action none event handler property globaleventhandlers.ondurationchange specification html5 media examples these examples add an event listener for the htmlmediaelement's durationchange event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: emptied event - Web APIs
bubbles no cancelable no interface event target element default action none event handler property globaleventhandlers.onemptied specification html5 media examples these examples add an event listener for the htmlmediaelement's emptied event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: ended event - Web APIs
target element default action none event handler property globaleventhandlers.onended specification html5 media this event is also defined in media capture and streams and web audio api examples these examples add an event listener for the htmlmediaelement's ended event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: loadeddata event - Web APIs
examples these examples add an event listener for the htmlmediaelement's loadeddata event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: loadedmetadata event - Web APIs
examples these examples add an event listener for the htmlmediaelement's loadedmetadata event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: pause event - Web APIs
bubbles no cancelable no interface event target element default action none event handler property globaleventhandlers.onpause specification html5 media examples these examples add an event listener for the htmlmediaelement's pause event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: play event - Web APIs
bubbles no cancelable no interface event target element default action none event handler property globaleventhandlers.onplay specification html5 media examples these examples add an event listener for the htmlmediaelement's play event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: playing event - Web APIs
bubbles no cancelable no interface event target element default action none event handler property globaleventhandlers.onplaying specification html5 media examples these examples add an event listener for the htmlmediaelement's playing event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: ratechange event - Web APIs
bbles no cancelable no interface event target element default action none event handler property globaleventhandlers.onratechange specification html5 media examples these examples add an event listener for the htmlmediaelement's ratechange event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: seeked event - Web APIs
bubbles no cancelable no interface event target element default action none event handler property globaleventhandlers.onseeked specification html5 media examples these examples add an event listener for the htmlmediaelement's seeked event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: seeking event - Web APIs
bubbles no cancelable no interface event target element default action none event handler property globaleventhandlers.onseeking specification html5 media examples these examples add an event listener for the htmlmediaelement's seeking event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: stalled event - Web APIs
bubbles no cancelable no interface event target element default action none event handler property globaleventhandlers.onstalled specification html5 media examples these examples add an event listener for the htmlmediaelement's stalled event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: suspend event - Web APIs
bubbles no cancelable no interface event target element default action none event handler property globaleventhandlers.onsuspend specification html5 media examples these examples add an event listener for the htmlmediaelement's suspend event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: timeupdate event - Web APIs
bbles no cancelable no interface event target element default action none event handler property globaleventhandlers.ontimeupdate specification html5 media examples these examples add an event listener for the htmlmediaelement's timeupdate event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: volumechange event - Web APIs
s no cancelable no interface event target element default action none event handler property globaleventhandlers.onvolumechange specification html5 media examples these examples add an event listener for the htmlmediaelement's volumechange event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement: waiting event - Web APIs
bubbles no cancelable no interface event target element default action none event handler property globaleventhandlers.onwaiting specification html5 media examples these examples add an event listener for the htmlmediaelement's waiting event, then post a message when that event handler has reacted to the event firing.

HTMLMediaElement - Web APIs
the best time to set a new length is after the loadedmetadata event fires, when the audio info is known, but before the audio has started or mozaudioavailable events have begun firing.

Using microtasks in JavaScript with queueMicrotask() - Web APIs
url]) { queuemicrotask(() => { this.data = this.cache[url]; this.dispatchevent(new event("load")); }); } else { fetch(url).then(result => result.arraybuffer()).then(data => { this.cache[url] = data; this.data = data; this.dispatchevent(new event("load")); }); } }; this balances the clauses by having both situations handle the setting of data and firing of the load event within a microtask (using queuemicrotask() in the if clause and using the promises used by fetch() in the else clause).

IDBDatabaseSync - Web APIs
transaction() creates and returns a transaction, acquiring locks on the given database objects, within the specified timeout duration, if possible.

IndexedDB API - Web APIs
this method returns an idbrequest object; asynchronous operations communicate to the calling application by firing events on idbrequest objects.

Intersection Observer API - Web APIs
as the user scrolls the page, these intersection detection routines are firing constantly during the scroll handling code, resulting in an experience that leaves the user frustrated with the browser, the web site, and their computer.

MediaStream.getAudioTracks() - Web APIs
example this example gets a webcam's audio and video in a stream using getusermedia(), attaches the stream to a <video> element, then sets a timer that, upon expiring, will stop the first audio track found on the stream.

MediaTrackSettings.deviceId - Web APIs
since there is a one-to-one pairing of id with each source, all tracks with the same source will share the same id for any given origin, so mediastreamtrack.getcapabilities() will always return exactly one value for deviceid.

MerchantValidationEvent - Web APIs
properties merchantvalidationevent.methodname secure context a domstring providing a unique payment method identifier for the payment handler that's requiring validation.

Notifications API - Web APIs
serviceworkerglobalscope includes the serviceworkerglobalscope.onnotificationclick handler, for firing custom functions when a notification is clicked.

PointerEvent - Web APIs
pointerout this event is fired for several reasons including: pointing device is moved out of the hit test boundaries of an element; firing the pointerup event for a device that does not support hover (see pointerup); after firing the pointercancel event (see pointercancel); when a pen stylus leaves the hover range detectable by the digitizer.

RTCIceCandidatePairStats.requestsReceived - Web APIs
the rtcicecandidatepairstats dictionary's requestsreceived property indicates the total number of stun connectivity check requests that have been received so far on the connection described by this pairing of candidates.

RTCIceCandidatePairStats.state - Web APIs
ice check lists during ice negotiation, the ice layer builds up a check list, which is a list of potential pairings of ice candidates.

RTCIceCandidatePairStats - Web APIs
that object's selectedcandidatepairid property indicates whether or not the specified transport is the one being used.

RTCInboundRtpStreamStats.sliCount - Web APIs
in general, what's usually of interest is that the higher this number is, the more the stream data is becoming corrupted between the sender and the receiver, requiring resends or dropping frames.

RTCInboundRtpStreamStats - Web APIs
this is an indicator of how often the stream has lagged, requiring frames to be skipped in order to catch up.

RTCOutboundRtpStreamStats - Web APIs
this is an indicator of how often the stream has lagged, requiring frames to be skipped in order to catch up.

RTCPeerConnection.addTrack() - Web APIs
note: adding a track to a connection triggers renegotiation by firing a negotiationneeded event.

RTCPeerConnection.iceConnectionState - Web APIs
"connected" a usable pairing of local and remote candidates has been found for all components of the connection, and the connection has been established.

RTCPeerConnection - Web APIs
"connected" a usable pairing of local and remote candidates has been found for all components of the connection, and the connection has been established.

RTCRtpSender.replaceTrack() - Web APIs
in fact, even changes that seem huge can be done without requiring negotation.

Screen Wake Lock API - Web APIs
wakelock.addeventlistener('release', () => { // the wake lock has been released statuselem.textcontent = 'wake lock has been released'; }); reacquiring a wake lock the following code reacquires the wake lock should the visibility of the document change and the wake lock is released.

Storage Access API - Web APIs
note: user interaction propagates to the promise returned by both of these methods, allowing the callers to take actions that require user interaction without requiring a second click from the user.

TextTrack.mode - Web APIs
the activecues list is being maintained and events are firing at the appropriate times; the track's text is also being drawn appropriately based on the styling and the track's kind.

Supporting both TouchEvent and MouseEvent - Web APIs
event firing the touch events standard defines a few browser requirements regarding touch and mouse interaction (see the interaction with mouse events and click section for details), noting the browser may fire both touch events and mouse events in response to the same user input.

Using Touch Events - Web APIs
if the target area is too small, touching it could result in firing other events for adjacent elements.

USB - Web APIs
calling this function triggers the user agent's pairing flow.

Signaling and video calling - Web APIs
note: as is the case with the caller, once the setlocaldescription() fulfillment handler has run, the browser begins firing icecandidate events that the callee must handle, one for each candidate that needs to be transmitted to the remote peer.

Using DTMF with WebRTC - Web APIs
hasaddtrack because some browsers have not yet implemented rtcpeerconnection.addtrack(), therefore requiring the use of the obsolete addstream() method, we use this boolean to determine whether or not the user agent supports addtrack(); if it doesn't, we'll fall back to addstream().

Movement, orientation, and motion: A WebXR example - Web APIs
this code should not be necessary, but there appears to be an issue in which at least some browsers are not correctly firing the end event.

Advanced techniques: Creating and sequencing audio - Web APIs
wiring this up is the same as we've seen before.

Web audio spatialization basics - Web APIs
value = y; panner.orientationz.value = z; break; } boombox.style.transform = 'translatex('+transform.xaxis+'px) translatey('+transform.yaxis+'px) scale('+transform.zaxis+') rotatey('+transform.rotatey+'deg) rotatex('+transform.rotatex+'deg)'; const move = prevmove || {}; move.frameid = requestanimationframe(() => moveboombox(direction, move)); return move; } wiring up our controls wiring up out control buttons is comparatively simple — now we can listen for a mouse event on our controls and run this function, as well as stop it when the mouse is released: // for each of our controls, move the boombox and change the position values movecontrols.foreach(function(el) { let moving; el.addeventlistener('mousedown', function() { let direct...

Web Authentication API - Web APIs
this could be entering a pin, using a fingerprint, doing an iris scan, etc.

Using the Web Speech API - Web APIs
think about dictation on macos, siri on ios, cortana on windows 10, android speech, etc.

WindowOrWorkerGlobalScope.setInterval() - Web APIs
minidaemon - a framework for managing timers in pages requiring many timers, it can often be difficult to keep track of all of the running timer events.

XMLHttpRequest() - Web APIs
mozsystem boolean: setting this flag to true allows making cross-site connections without requiring the server to opt-in using cors.

XMLHttpRequest: timeout event - Web APIs
the timeout event is fired when progression is terminated due to preset time expiring.

XMLHttpRequest - Web APIs
timeout fired when progress is terminated due to preset time expiring.

ARIA live regions - Accessibility
using javascript, it is possible to dynamically change parts of a page without requiring the entire page to reload — for instance, to update a list of search results on the fly, or to display a discreet alert or notification which does not require user interaction.

ARIA Test Cases - Accessibility
also, as a clever feature for at testing, the firing of events (like event_object_statechange) can be invoked from the examples.

An overview of accessible web applications and widgets - Accessibility
to be accessible to a variety of users, all features of a web application or widget should also be controllable with the keyboard, without requiring a mouse.

Implementing a Microsoft Active Accessibility (MSAA) Server - Accessibility
in custom interfaces, create methods that hand back a lot of data in one call, rather than requiring a large number of calls.

Accessibility documentation index - Accessibility
7 aria live regions aria, accessibility, arialive using javascript, it is possible to dynamically change parts of a page without requiring the entire page to reload — for instance, to update a list of search results on the fly, or to display a discreet alert or notification which does not require user interaction.

Alternative style sheets - CSS: Cascading Style Sheets
it defines how these are determined, and lets the html specification define the html-specific behaviors by requiring it to define when to create a css style sheet.

CSS grids, logical values, and writing modes - CSS: Cascading Style Sheets
bunya nuts black-eyed pea prairie turnip leek lentil turnip greens parsnip.

Using media queries - CSS: Cascading Style Sheets
and the and operator is used for combining multiple media features together into a single media query, requiring each chained feature to return true in order for the query to be true.

Using CSS custom properties (variables) - CSS: Cascading Style Sheets
for example, the same color might be used in hundreds of different places, requiring global search and replace if that color needs to change.

<display-legacy> - CSS: Cascading Style Sheets
css 2 used a single-keyword syntax for the display property, requiring separate keywords for block-level and inline-level variants of the same layout mode.

display - CSS: Cascading Style Sheets
legacy <display-legacy> css 2 used a single-keyword syntax for the display property, requiring separate keywords for block-level and inline-level variants of the same layout mode.

font-variant-caps - CSS: Cascading Style Sheets
for example: in turkic languages, such as turkish (tr), azerbaijani (az), crimean tatar (crh), volga tatar (tt), and bashkir (ba), there are two kinds of i (one with the dot, one without) and two case pairings: i/İ and ı/i.

scroll-snap-coordinate - CSS: Cascading Style Sheets
for each pairing, the first value gives the x coordinate of the snap coordinate, the second value its y coordinate.

Demos of open web technologies
(interactive) video embedded in svg (or use the local download) summer html image map creator (source code) video video 3d animation "mozilla constantly evolving" video 3d animation "floating dance" streaming anime, movie trailer and interview billy's browser firefox flick virtual barber shop transformers movie trailer a scanner darkly movie trailer (with built in controls) events firing and volume control dragable and sizable videos 3d graphics webgl web audio fireworks ioquake3 (source code) escher puzzle (source code) kai 'opua (source code) virtual reality the polar sea (source code) sechelt fly-through (source code) css css zen garden css floating logo "mozilla" paperfold css blockout rubik's cube pure css slides planetarium (source code) loader...

Event reference
timeout progression is terminated due to preset time expiring.

Live streaming web audio and video - Developer guides
important: although the <audio> and <video> tags are protocol agnostic, no browser currently supports anything other than http without requiring plugins, although this looks set to change.

Web Audio playbackRate explained - Developer guides
pan id="currentpbr">1</span></p> </form> and apply some javascript to it: window.onload = function () { var v = document.getelementbyid("myvideo"); var p = document.getelementbyid("pbr"); var c = document.getelementbyid("currentpbr"); p.addeventlistener('input',function(){ c.innerhtml = p.value; v.playbackrate = p.value; },false); }; finally, we listen for the input event firing on the <input> element, allowing us to react to the playback rate control being changed.

Rich-Text Editing in Mozilla - Developer guides
aihmcz0tvgmbqkzhayyfewev14eq8iflhnehmfdqkaiskqci2pdc4qbg+oajc0ewadncogo6anqkkoiqa7" /> <img class="intlink" title="print" onclick="printdoc();" src="data:image/png;base64,ivborw0kggoaaaansuheugaaabyaaaawcayaaadetgw7aaaabgdbtueaalgpc/xhbqaaaazis0deap8a/wd/ol2nkwaaaalwsflzaaalewaacxmbajqcgaaaaad0su1fb9oebxczfmgboiwaaaaidevydenvbw1lbnqa9sywvwaaaufjrefuomvtlutsjfeux//n3nn0ydpbh1abrpt4lfqtqkc3jrkkneisiiribbehjjpklivo4m1rrmkkjqirmjruqudkpt71qpipirkpaqdf55tv5vvuszjqtjolseukd3xu/3dpzusc/22wtu2wrn+jg5so/ocdh8ycmjdflehmlkjkvk7kuyn+ufza/rtth76zavocdptrxzqtni3mrwupc+6cktlxz/sddp2uu9uxlmyxz6qm8v4tz8lhf1h+zdqxt7s8olmxtbf4e8qafhjj3kbp2mzkkthpitjp9vh6ihia+whtasx5brpwuemgdondf/2a4m7ukds1jw662+xkqtkeuoqjktojm2h53yfl15psj04zc94wdtibr26fxlc2mzrvbccebz2kirfd414tkmlezbvgt33+qcohgha81swysew0r1uzfnylmtpx80pngqq91lwv...

Making content editable - Developer guides
aihmcz0tvgmbqkzhayyfewev14eq8iflhnehmfdqkaiskqci2pdc4qbg+oajc0ewadncogo6anqkkoiqa7" /> <img class="intlink" title="print" onclick="printdoc();" src="data:image/png;base64,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...

User input and controls - Developer guides
for devices providing a mouse/touchpad as a pointing method, the pointer lock api helps you in implementing a first person 3d game or other applications requiring full control of the pointing device.

<audio>: The Embed Audio element - HTML: Hypertext Markup Language
if you must offer autoplay functionality, you should make it opt-in (requiring a user to specifically enable it).

<dfn>: The Definition element - HTML: Hypertext Markup Language
the <p> element, the <dt>/<dd> pairing, or the <section> element which is the nearest ancestor of the <dfn> is considered to be the definition of the term.

<fieldset>: The Field Set element - HTML: Hypertext Markup Language
<form action="#"> <fieldset> <legend>simple fieldset</legend> <input type="radio" id="radio"> <label for="radio">spirit of radio</label> </fieldset> </form> disabled fieldset this example shows a disabled <fieldset> with two controls inside it.

<figure>: The Figure with Optional Caption element - HTML: Hypertext Markup Language
igcaption> <blockquote>if debugging is the process of removing software bugs, then programming must be the process of putting them in.</blockquote> </figure> poems <figure> <p style="white-space:pre"> bid me discourse, i will enchant thine ear, or like a fairy trip upon the green, or, like a nymph, with long dishevell'd hair, dance on the sands, and yet no footing seen: love is a spirit all compact of fire, not gross to sink, but light, and will aspire.</p> <figcaption><cite>venus and adonis</cite>, by william shakespeare</figcaption> </figure> specifications specification status comment html living standardthe definition of '<figure>' in that specification.

<input type="email"> - HTML: Hypertext Markup Language
the example below creates a 32 character-wide e-mail address entry box, requiring that the contents be no shorter than 3 characters and no longer than 64 characters.

<input type="tel"> - HTML: Hypertext Markup Language
the example below creates a 20-character wide telephone number entry box, requiring that the contents be no shorter than 9 characters and no longer than 14 characters.

<input type="url"> - HTML: Hypertext Markup Language
the example below creates a 30-character wide url address entry box, requiring that the contents be no shorter than 10 characters and no longer than 80 characters.

<output>: The Output element - HTML: Hypertext Markup Language
assistive technology will thereby announce the results of ui interactions posted inside it without requiring that focus is switched away from the controls that produce those results.

<title>: The Document Title element - HTML: Hypertext Markup Language
use a descriptive phrase, or a term-definition pairing for glossary or reference-style pages.

<video>: The Video Embed element - HTML: Hypertext Markup Language
if you must offer autoplay functionality, you should make it opt-in (requiring a user to specifically enable it).

HTTP caching - HTTP
without requiring an additional trip to the server.

Connection management in HTTP/1.x - HTTP
in http/1.1, persistence is the default, and the header is no longer needed (but it is often added as a defensive measure against cases requiring a fallback to http/1.0).

Access-Control-Max-Age - HTTP
a value of -1 will disable caching, requiring a preflight options check for all calls.

Cache-Control - HTTP
cache-control: public, max-age=604800, immutable requiring revalidation specifying no-cache or max-age=0 indicates that clients can cache a resource and must revalidate each time before using it.

CSP: script-src - HTTP
script-src 'strict-dynamic' 'nonce-somenonce' or script-src 'strict-dynamic' 'sha256-base64encodedhash' it is possible to deploy strict-dynamic in a backwards compatible way, without requiring user-agent sniffing.

Set-Cookie - HTTP
set-cookie: sessionid=38afes7a8 permanent cookie instead of expiring when the client is closed, permanent cookies expire at a specific date (expires) or after a specific length of time (max-age).

Strict-Transport-Security - HTTP
whenever the strict-transport-security header is delivered to the browser, it will update the expiration time for that site, so sites can refresh this information and prevent the timeout from expiring.

An overview of HTTP - HTTP
though http doesn't require the underlying transport protocol to be connection-based; only requiring it to be reliable, or not lose messages (so at minimum presenting an error).

CSS Houdini
with worklets, you can create modular css, requiring a single line of javascript to import configureable components: no pre-processors, post-processors or javascript frameworks needed.

Introduction - JavaScript
in contrast, javascript descends in spirit from a line of smaller, dynamically typed languages such as hypertalk and dbase.

Using Promises - JavaScript
when promises and tasks collide if you run into situations in which you have promises and tasks (such as events or callbacks) which are firing in unpredictable orders, it's possible you may benefit from using a microtask to check status or balance out your promises when promises are created conditionally.

getter - JavaScript
description sometimes it is desirable to allow access to a property that returns a dynamically computed value, or you may want to reflect the status of an internal variable without requiring the use of explicit method calls.

Array.prototype.map() - JavaScript
e: 30}] let reformattedarray = kvarray.map(obj => { let robj = {} robj[obj.key] = obj.value return robj }) // reformattedarray is now [{1: 10}, {2: 20}, {3: 30}], // kvarray is still: // [{key: 1, value: 10}, // {key: 2, value: 20}, // {key: 3, value: 30}] mapping an array of numbers using a function containing an argument the following code shows how map works when a function requiring one argument is used with it.

TypedArray.prototype.map() - JavaScript
const numbers = new uint8array([1, 4, 9]); const roots = numbers.map(math.sqrt); // roots is now: uint8array [1, 2, 3], // numbers is still uint8array [1, 4, 9] mapping a typed array of numbers using a function containing an argument the following code shows how map works when a function requiring one argument is used with it.

Strict mode - JavaScript
a few strict mode tweaks, plus requiring that user-submitted javascript be strict mode code and that it be invoked in a certain manner, substantially reduce the need for those runtime checks.

JavaScript
learn javascript an excellent resource for aspiring web developers — learn javascript in an interactive environment, with short lessons and interactive tests, guided by automated assessment.

Media container formats (file types) - Web media technologies
in other cases, a particular codec, stored in a certain container type, is so ubiquitous that the pairing is treated in a unique fashion.

Image file type and format guide - Web media technologies
it's particulary useful for photographs; applying lossy compression to content requiring sharpness, like diagrams or charts, can produce unsatisfactory results.

Codecs used by WebRTC - Web media technologies
sometimes it means requiring a specific value for a parameter, or that a specific set of values be allowed.

Web media technologies
webrtc webrtc (web real-time communication) makes it possible to stream live audio and video, as well as transfer arbitrary data, between two peers over the internet, without requiring an intermediary.

Performance fundamentals - Web Performance
paul irish has an in-depth analysis of the benefits of translate() from a performance point of view.

Lazy loading - Web Performance
most of those images are off-screen (non-critical), requiring user interaction (an example being scroll) in order to view them.

Mobile first - Progressive web apps (PWAs)
imagine you wanted to include some kind of webgl chart in the desktop version of the site requiring a webgl library like three but didn't want it included in the mobile version?

The building blocks of responsive design - Progressive web apps (PWAs)
read more about this at * { box-sizing: border-box } ftw, by paul irish.

Progressive web apps (PWAs)
workbox — spiritual successor to sw-precache with more advanced caching strategies and easy precaching.

xlink:arcrole - SVG: Scalable Vector Graphics
a different arc it might have the role of "daughter." twentytwo elements are using this attribute: <a>, <altglyph>, <animate>, <animatecolor>, <animatemotion>, <animatetransform>, <color-profile>, <cursor>, <feimage>, <filter>, <font-face-uri>, <glyphref>, <image>, <lineargradient>, <mpath>, <pattern>, <radialgradient>, <script>, <set>, <textpath>, <tref>, <use> usage notes value <iri> default value none animatable no <iri> this value specifies an iri reference that identifies some resource that describes the intended property.

Specification Deviations - SVG: Scalable Vector Graphics
requiring svg authors to know which elements can and cannot take a 'class' attribute would just put an extra burden on them.

Introduction - SVG: Scalable Vector Graphics
svg does offer benefits, some of which include having a dom interface available for it, and not requiring third-party extensions.

Features restricted to secure contexts - Web security
not supported not supported web midi (see midiaccess, for example) 43 not supported not supported not supported web crypto api 60 79 not supported 75 secure context restrictions that vary by browser some browsers may decide to disable certain apis in non-secure contexts or apply other restrictions/security measures, despite the spec not requiring them.

Transport Layer Security - Web security
retiring old tls versions to help with working towards a more modern, more secure web, tls 1.0 and 1.1 support will be removed from all major browsers in q1 2020.

Introduction to using XPath in JavaScript - XPath
getting specifically namespaced elements and attributes regardless of prefix if one wishes to provide flexibility in namespaces (as they are intended) by not necessarily requiring a particular prefix to be used when finding a namespaced element or attribute, one must use special techniques.