HTTP Index - HTTP
63 age caching, http, response, header the age header contains the time in seconds the object has been in a proxy cache.
... 66 authorization http, http header, reference, request header, header the http authorization request header contains the credentials to authenticate a user agent with a server, usually after the server has responded with a 401 unauthorized status and the www-authenticate header.
... 109 cookie cookies, http, reference, header, request the cookie http request header contains stored http cookies previously sent by the server with the set-cookie header.
...And 11 more matches

Index - HTTP
15 age caching, http, response, header the age header contains the time in seconds the object has been in a proxy cache.
... 18 authorization http, http header, reference, request header, header the http authorization request header contains the credentials to authenticate a user agent with a server, usually after the server has responded with a 401 unauthorized status and the www-authenticate header.
... 54 cookie cookies, http, reference, header, request the cookie http request header contains stored http cookies previously sent by the server with the set-cookie header.
...And 10 more matches

jspage - Archive of obsolete content
ll(e,this[b],b,this);}return c;},some:function(c,d){for(var b=0,a=this.length;b<a;b++){if(c.call(d,this[b],b,this)){return true; }}return false;},associate:function(c){var d={},b=math.min(this.length,c.length);for(var a=0;a<b;a++){d[c[a]]=this[a];}return d;},link:function(c){var a={}; for(var e=0,b=this.length;e<b;e++){for(var d in c){if(c[d](this[e])){a[d]=this[e];delete c[d];break;}}}return a;},contains:function(a,b){return this.indexof(a,b)!=-1; },extend:function(c){for(var b=0,a=c.length;b<a;b++){this.push(c[b]);}return this;},getlast:function(){return(this.length)?this[this.length-1]:null;},getrandom:function(){return(this.length)?this[$random(0,this.length-1)]:null; },include:function(a){if(!this.contains(a)){this.push(a);}return this;},combine:function(c){for(var b=0,a=c.length;b<a;b++){thi...
...);}});number.alias("times","each"); (function(b){var a={};b.each(function(c){if(!number[c]){a[c]=function(){return math[c].apply(null,[this].concat($a(arguments)));};}});number.implement(a); })(["abs","acos","asin","atan","atan2","ceil","cos","exp","floor","log","max","min","pow","sin","sqrt","tan"]);string.implement({test:function(a,b){return((typeof a=="string")?new regexp(a,b):a).test(this); },contains:function(a,b){return(b)?(b+this+b).indexof(b+a+b)>-1:this.indexof(a)>-1;},trim:function(){return this.replace(/^\s+|\s+$/g,"");},clean:function(){return this.replace(/\s+/g," ").trim(); },camelcase:function(){return this.replace(/-\d/g,function(a){return a.charat(1).touppercase();});},hyphenate:function(){return this.replace(/[a-z]/g,function(a){return("-"+a.charat(0).tolowercase()); });},capital...
...on(b){a.push(b);});return a;},toquerystring:function(a){var b=[]; hash.each(this,function(f,e){if(a){e=a+"["+e+"]";}var d;switch($type(f)){case"object":d=hash.toquerystring(f,e);break;case"array":var c={};f.each(function(h,g){c[g]=h; });d=hash.toquerystring(c,e);break;default:d=e+"="+encodeuricomponent(f);}if(f!=undefined){b.push(d);}});return b.join("&");}});hash.alias({keyof:"indexof",hasvalue:"contains"}); var event=new native({name:"event",initialize:function(a,f){f=f||window;var k=f.document;a=a||f.event;if(a.$extended){return a;}this.$extended=true;var j=a.type; var g=a.target||a.srcelement;while(g&&g.nodetype==3){g=g.parentnode;}if(j.test(/key/)){var b=a.which||a.keycode;var m=event.keys.keyof(b);if(j=="keydown"){var d=b-111; if(d>0&&d<13){m="f"+d;}}m=m||string.fromcharcode(b).tolowercase()...
...And 9 more matches

HTML documentation index - HTML: Hypertext Markup Language
the attribute contains a single “language tag” in the format defined in tags for identifying languages (bcp47).
... 27 part global attributes, html, reference, part the part global attribute contains a space-separated list of the part names of the element.
... 30 style global attributes, html, reference the style global attribute contains css styling declarations to be applied to the element.
...And 9 more matches

XUL Structure - Archive of obsolete content
content packages the name of the jar file might describe what it contains, but you can't be sure unless you view its contents.
...if you extract the files in browser.jar, you will find that it contains a directory structure much like the following: content browser browser.xul browser.js -- other browser xul and js files goes here -- bookmarks -- bookmarks files go here -- preferences -- preferences files go here -- .
... the content/browser directory contains a number of files with .xul and .js extensions.
...And 8 more matches

CSSCounterStyleRule - Web APIs
csscounterstylerule.name is a domstring object that contains the serialization of the <counter-style-name> defined for the associated rule.
... csscounterstylerule.system is a domstring object that contains the serialization of the system descriptor defined for the associated rule.
... csscounterstylerule.symbols is a domstring object that contains the serialization of the symbols descriptor defined for the associated rule.
...And 8 more matches

Getting Started - Archive of obsolete content
skin skin simply contains another directory, classic which holds all the good stuff.
... skin\classic classic contains the following directories.
... skin\classic\communicator communicator contains all the toolbar icons, as well as the icons for the bookmark manager and the preferences window.
...And 7 more matches

HTTP headers - HTTP
authorization contains the credentials to authenticate a user-agent with a server.
... proxy-authorization contains the credentials to authenticate a user agent with a proxy server.
... max-forwards cookies cookie contains stored http cookies previously sent by the server with the set-cookie header.
...And 7 more matches

Install Manifests - Archive of obsolete content
it contains metadata identifying the add-on, providing information about who created it, where more information can be found about it, which versions of what applications it is compatible with, how it should be updated, and so on.
... examples <em:developer>jane doe</em:developer> <em:developer>koos van der merwe</em:developer> hasembeddedwebextension if present and given the value "true", this indicates that this add-on contains an embedded webextension.
... <em:optionstype>3</em:optionstype> <em:optionsurl>chrome://myaddon/content/options.html</em:optionsurl> this section here contains an example of localized html page as an option panel in a new tab: bootstrapped extensions :: localization (l10n) (example linked to is: github :: l10n-html-options).
...And 6 more matches

Working with JSON - Learn web development
members contains an array populated by objects.
... other notes json is purely a data format — it contains only properties, no methods.
...the latter contains some simple css to style our page, while the former contains some very simple body html: <header> </header> <section> </section> plus a <script> element to contain the javascript code we will be writing in this exercise.
...And 6 more matches

Garbage collection
a chunk is 1mb and contains arenas, padding, the mark bitmap (chunkbitmap), a bitmap of decommitted arenas, and a chunk header (chunkinfo).
... the chunkinfo contains a list of unallocated arenas, starting at chunkinfo::freearenashead and linked through arenaheader::next.
... the chunkinfo also contains some basic stats, such as the number of free arenas.
...And 6 more matches

HTML elements reference - HTML: Hypertext Markup Language
document metadata metadata contains information about the page.
... <head> the html <head> element contains machine-readable information (metadata) about the document, like its title, scripts, and style sheets.
... <style> the html <style> element contains style information for a document, or part of a document.
...And 6 more matches

Elements - Archive of obsolete content
bindings contains zero or more binding elements as children.
...hello.xml should reside in the same directory which contains helloworld.html.
... if the children tag contains content itself, that content will become the default content.
...And 5 more matches

NPAPI plugin reference - Archive of obsolete content
np_port contains information required by the window field of an npwindow structure.
... npanycallbackstruct contains information required during embedded mode printing.
... npembedprint substructure of npprint that contains platform-specific information used during embedded mode printing.
...And 5 more matches

Index - MDN Web Docs Glossary: Definitions of Web-related terms
12 accessibility tree (aom) aom, accessibility, dom, glossary, reference the accessibility tree, or accessibility object model (aom), contains accessibility-related information for most html elements.
... 173 global scope codingscripting, glossary, needscontent in a programming environment, the global scope is the scope that contains, and is visible in, all other scopes.
... 202 head codingscripting, glossary, html, head, metadata the head is the part of an html document that contains metadata about that document, such as author, description, and links to css or javascript files that should be applied to the html.
...And 5 more matches

SpiderMonkey Internals
in addition to the interpreter, spidermonkey contains a just-in-time (jit) compiler, a garbage collector, code implementing the basic behavior of javascript values, a standard library implementing ecma 262-5.1 §15 with various extensions, and a few public apis.
... compiler the compiler consumes javascript source code and produces a script which contains bytecode, source annotations, and a pool of string, number, and identifier literals.
... the script also contains objects, including any functions defined in the source code, each of which has its own, nested script.
...And 5 more matches

The Places database
it contains the host url, frequency of access, if typed or not, and it's prefix (https://, ftp://, etc).
...it contains the date, referrer, and other information specific to that visit.
... it contains a reference to the moz_places table which contains the url and other global statistics.
...And 5 more matches

Drawing and Event Handling - Plugins
this structure contains information about coordinate position, size, the state of the plug-in (windowed or windowless), and some platform-specific information.
...in this case, platformprint->embedprint.window contains the window in which the plug-in should print.
... the value parameter contains the name of the plug-in.
...And 5 more matches

Structures - Plugins
structure summary npanycallbackstruct contains information required during embedded mode printing.
... npembedprint substructure of npprint that contains platform-specific information used during embedded mode printing.
... npfullprint substructure of npprint that contains platform-specific information used during full-page mode printing.
...And 5 more matches

Request - Web APIs
properties request.cache read only contains the cache mode of the request (e.g., default, reload, no-cache).
... request.context read only contains the context of the request (e.g., audio, image, iframe, etc.) request.credentials read only contains the credentials of the request (e.g., omit, same-origin, include).
... request.headers read only contains the associated headers object of the request.
...And 5 more matches

MMgc - Archive of obsolete content
another way to think about it: unmanaged memory is c++ operators new and delete managed memory is c++ operator new, with optional delete mmgc contains a page allocator called gcheap, which allocates large blocks (megabytes) of memory from the system and doles out 4kb pages to the unmanaged memory allocator (fixedmalloc) and the managed memory allocator (gc).
.../** * flags to be passed as second argument to alloc */ enum allocflags { kzero=1, kcontainspointers=2, kfinalize=4, krcobject=8 }; kzero zeros out the memory.
... otherwise, the memory contains undefined values.
...And 4 more matches

Creating a Skin for Firefox/Getting Started - Archive of obsolete content
note: starting in gecko 2.0, the new omni.jar file contains the skin, among other resources.
... skin skin simply contains another directory, classic which holds all the good stuff.
... skin\classic classic contains the following directories.
...And 4 more matches

Complete - Archive of obsolete content
the xpi contains: install.rdf information about the extension chrome.manifest registration data for firefox etc.
... the xul toolbarbutton tag contains an entity &allcustom.alert.1;.
...in the allcustom directory, the file allcustom.dtd contains the translated strings.
...And 4 more matches

editor - Archive of obsolete content
contentdocument type: document this read-only property contains the document object in the element.
... contentwindow type: todo use the contentwindow.wrappedjsobject to obtain a dom(html) window object docshell type: nsidocshell this read-only property contains the nsidocshell object for the document.
... webbrowserfind type: nsiwebbrowserfind this read-only property contains an nsiwebbrowserfind object which can be used to search for text in the document.
...And 4 more matches

Mozilla XForms User Interface - Archive of obsolete content
ui common the ui common attribute set (see the spec) contains the attributes that are available for the xforms elements that are used to build the user interface presentation in a form.
...this section contains a short description of each xforms element and its representation.
...form controls module this section contains a short description for each form control element.
...And 4 more matches

Client-side storage - Learn web development
now type these lines into your javascript console: let myname = localstorage.getitem('name'); myname upon typing in the second line, you should see that the myname variable now contains the value of the name data item.
... you can find the example html at personal-greeting.html — this contains a simple website with a header, content, and footer, and a form for entering your name.
...you'll see that the html is pretty simple: a web site with a header and footer, as well as a main content area that contains a place to display notes, and a form for entering new notes into the database.
...And 4 more matches

A first splash into JavaScript - Learn web development
the final block chained onto the end of this code (the else { }) contains code that is only run if neither of the other two tests returns true (i.e.
...for now, we'll just briefly discuss the built-in objects that your browser contains, which allow you to do lots of useful things.
... because guessfield now contains a reference to an <input> element, it now has access to a number of properties (basically variables stored inside objects, some of which can't have their values changed) and methods (basically functions stored inside objects).
...And 4 more matches

Client-Server Overview - Learn web development
the response contains an http response status code indicating whether or not the request succeeded (e.g.
... the request each line of the request contains information about it.
... the first part is called the header, and contains useful information about the request, in the same way that an html head contains useful information about an html document (but not the actual content itself, which is in the body): get https://developer.mozilla.org/search?q=client+server+overview&topic=apps&topic=html&topic=css&topic=js&topic=api&topic=webdev http/1.1 host: developer.mozilla.org connection: keep-alive pragma: no-cache cache-control: no-cache upgrade-insecure-requests: 1 user-agent: mozilla/5.0 (windows nt 10.0; wow64) applewebkit/537.36 (khtml, like gecko) chrome/52.0.2743.116 safari/537.36 accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8 referer: https://developer.mozilla.org/ accept-encoding: gzip, deflate, sdch, br accept-charset: iso-8859-1,...
...And 4 more matches

NSS tools : certutil
bracket the issuer string with quotation marks if it contains spaces.
...bracket the nickname string with quotation marks if it contains spaces.
...bracket the output-file string with quotation marks if it contains spaces.
...And 4 more matches

certutil
bracket the issuer string with quotation marks if it contains spaces.
...bracket the nickname string with quotation marks if it contains spaces.
...bracket the output-file string with quotation marks if it contains spaces.
...And 4 more matches

Rhino Debugger
if the current line in the script contains a function call control will return to the debugger upon entry into the function.
... moving up and down the stack the lower-left (dockable) pane in the debugger main window contains a combo-box labeled "context:" which displays the current stack of the executing script.
... setting and clearing breakpoints the main desktop of the debugger contains file windows which display the contents of each script you are debugging.
...And 4 more matches

nsIMsgHeaderParser
sses(in wstring line); void removeduplicateaddresses(in string addrs, in string other_addrs, in prbool removealiasestome, out string newaddress); string unquotephraseoraddr(in string line, in boolean preserveintegrity); wstring unquotephraseoraddrwstring(in wstring line, in boolean preserveintegrity); methods extractheaderaddressmailboxes() given a string which contains a list of header addresses, returns a comma-separated list of just the 'mailbox' portions.
... exceptions thrown missing exception missing description native code only!extractheaderaddressnames given a string which contains a list of header addresses, returns a comma-separated list of just the 'user name' portions.
... exceptions thrown missing exception missing description native code only!parseheaderaddresses given a string which contains a list of header addresses, parses it into their component names and mailboxes.
...And 4 more matches

XPCOM reference
nsmsgnavigationtypethe nsmsgnavigationtype interface contains constants used for message navigation in thunderbird.
... for example to move forward a message, you would call:nsmsgsearchopvaluedefined in comm-central/ mailnews/ base/ search/ public/ nsmsgsearchcore.idl nsmsgviewcommandcheckstatethe nsmsgviewcommandcheckstate interface contains constants used for command status in thunderbird.
... it is (as far as i can tell) not currently used anywhere in thunderbird.nsmsgviewcommandtypethe nsmsgviewcommandtype interface contains constants used for commands in thunderbird.
...And 4 more matches

BasicCardResponse - Web APIs
properties basiccardresponse.cardnumber read only secure context contains the number of the card used to make the payment.
... basiccardresponse.cardholdername read only secure context optional contains the cardholder name of the card used to make the payment.
... basiccardresponse.cardsecuritycode read only secure context optional contains the security code of the card used to make the payment.
...And 4 more matches

XMLHttpRequestEventTarget - Web APIs
" y="1" width="250" height="50" fill="#f4f7f8" stroke="#d4dde4" stroke-width="2px" /><text x="276" y="30" font-size="12px" font-family="consolas,monaco,andale mono,monospace" fill="#4d4e53" text-anchor="middle" alignment-baseline="middle">xmlhttprequesteventtarget</text></a></svg></div> a:hover text { fill: #0095dd; pointer-events: all;} properties xmlhttprequesteventtarget.onabort contains the function to call when a request is aborted and the abort event is received by this object.
... xmlhttprequesteventtarget.onerror contains the function to call when a request encounters an error and the error event is received by this object.
... xmlhttprequesteventtarget.onload contains the function to call when an http request returns after successfully fetching content and the load event is received by this object.
...And 4 more matches

Content categories - Developer guides
phrasing content phrasing content defines the text and the mark-up it contains.
... a few other elements belong to this category, but only if a specific condition is fulfilled: <a>, if it contains only phrasing content <area>, if it is a descendant of a <map> element <del>, if it contains only phrasing content <ins>, if it contains only phrasing content <link>, if the itemprop attribute is present <map>, if it contains only phrasing content <meta>, if the itemprop attribute is present embedded content embedded content imports another resource or inserts content from another mark-u...
... <button> <fieldset> <input> <keygen> <label> <meter> <object> <output> <progress> <select> <textarea> this category contains several sub-categories: listed elements that are listed in the form.elements and fieldset.elements idl collections.
...And 4 more matches

widget - Archive of obsolete content
for example, this widget contains an image, so it looks like a simple icon: require("sdk/widget").widget({ id: "mozilla-icon", label: "my mozilla widget", contenturl: "http://www.mozilla.org/favicon.ico" }); you can make contenturl point to an html or icon file which you have packaged inside your add-on.
... just save the file in your add-on's data directory, and reference it using the data.url() method of the self module: var data = require("sdk/self").data; require("sdk/widget").widget({ id: "my-widget", label: "my widget", contenturl: data.url("my-content.html") }); this widget contains an entire web page: require("sdk/widget").widget({ id: "hello-display", label: "my hello widget", content: "hello!", width: 50 }); widgets are quite small by default, so this example used the width property to grow it in order to show all the text.
... setting the contenturl property will break the channel of communication between this widget and any content scripts it contains.
...And 3 more matches

ui/frame - Archive of obsolete content
this is passed an event object which always contains a source property, which has a postmessage() function modeled after window.postmessage().
...this is passed an event object which always contains a source property, which has a postmessage() function modeled after window.postmessage().
... arguments event : this contains two properties: source, which defines a postmessage() function which you can use to send messages back to this particular frame instance.
...And 3 more matches

Multiple Rules - Archive of obsolete content
rl.org/dc/elements/1.1/title" object="?title"/> </query> <rule> <where subject="?title" rel="equals" value="canal"/> <action> <button uri="?photo" image="?photo" label="view" orient="vertical"/> </action> </rule> <rule> <action> <image uri="?photo" src="?photo"/> </action> </rule> </template> </hbox> this template contains a query with two rules.
...the first rule contains a new element, where which is used to define a condition.
...an anothermatch only negative values with one rule, positive values with another greatermatch if a number is greater than anotherdisplay values greater than 1000 differently beforematch if a value comes before another alphabetically aftermatch if a value comes after another alphabetically startswithmatch if a value starts with a specific string endswithmatch if a value ends with a specific string containsmatch if a value contains a substringto highlight results that contain a search term here is an example using the 'contains' operator: <vbox datasources="people.xml" ref="*" querytype="xml"> <template> <query expr="person"> <assign var="?letters" expr="string-length(@name) - 1"/> </query> <rule> <where subject="?name" rel="contains" value=" "/> <action> <l...
...And 3 more matches

XForms Custom Controls - Archive of obsolete content
xf|select1[appearance="compact"] { -moz-binding: url('chrome://xforms/content/select-xhtml.xml#xformswidget-select1-compact'); } the mediatype attribute can be used by the form author to align the type of presentation with the type of data that the bound instance node contains.
...in mozilla, every bound xforms control has a typelist attribute of moztype namespace that contains the inheritance chain of data types that we detected.
...controlfile-xhtml.xml contains the xhtml implementation bindings for the control and controlfile-xul.xml contains the implementation bindings for when this control is hosted in a xul document.
...And 3 more matches

Test your skills: Conditionals - Learn web development
conditionals 1 in this task you are provided with two variables: season — contains a string that says what the current season is.
... we want you to create a conditional that checks whether season contains the string "summer", and if so assigns a string to response that gives the user an appropriate message about the season.
... to finish off, you should then add another test that checks whether season contains the string "winter", and again assigns an appropriate string to response.
...And 3 more matches

Getting started with Svelte - Learn web development
��─ node_modules ├── public │ ├── favicon.ico │ ├── index.html │ ├── global.css │ └── build │ ├── bundle.css │ ├── bundle.css.map │ ├── bundle.js │ └── bundle.js.map └── src ├── app.svelte └── main.js the contents are as follows: package.json and package-lock.json: contains information about the project that node.js/npm uses to keep it organized.
... scripts: contains setup scripts as required.
... public: this directory contains all the files that will be published in production.
...And 3 more matches

Multiprocess on Windows
this file contains the typelib metadata.
...if your interface contains two functions with those annotations, then you will need to add two arraydata entries.
... arraydata contains seven fields: iid miid; ulong mmethodindex; ulong marrayparamindex; vartype marrayparamtype; iid marrayparamiid; ulong mlengthparamindex; flag mflag; miid is the uuid of the interface owning the function.
...And 3 more matches

How Mozilla's build system works
config.status contains 2 parts: data structures representing the output of configure and a command-line interface for preparing, configuring, or generating an appropriate build backend.
...this dictionary contains the uppercase variables directly assigned to and the special variables indirectly assigned to by calling functions exported to the execution environment.
...mozbuild is the name of our python package that contains most of the code for defining how the build system works.
...And 3 more matches

The Firefox codebase: CSS Guidelines
this document contains guidelines defining how css inside the firefox codebase should be written, it is notably relevant for firefox front-end engineers.
...the overriding css section contains more information about this.
...sometimes, when copy-pasting older code, it happens that the code in question contains unnecessary overrides.
...And 3 more matches

NSS sources building testing
find the directory that contains the highest version number.
...the subdirectories dbm, security/dbm, security/coreconf, security/nss were part of the nss sources.) the nss directory contains the following important subdirectories: nss/coreconf contains knowledge for cross platform building.
... nss/lib contains all the library code that is used to create the runtime libraries used by applications.
...And 3 more matches

nss tech note5
note: this document contains code snippets that focus on essential aspects of the task and often do not illustrate all the cleanup that needs to be done.
... pk11context* digestcontext = pk11_createdigestcontext(sec_oid_md5); <big>digest the data</big> <big>secstatus s = pk11_digestbegin(digestcontext); s = pk11_digestop(digestcontext, data, sizeof data); s = pk11_digestfinal(digestcontext, digest, &len, sizeof digest); /* now, digest contains the 'digest', and len contains the length of the digest */</big> clean up pk11_destroycontext(digestcontext, pr_true); you can also look at a sample program illustrating this hash / digest with secret key included include headers #include "nss.h" #include "pk11pub.h" make sure nss is initialized.the simplest init function, in case you don't need a nss database is ...
... &param); <big>digest the data</big>, providing the key <big>secstatus s = pk11_digestbegin(digestcontext); s = pk11_digestkey(digestcontext, symkey); s = pk11_digestop(digestcontext, data, sizeof data); s = pk11_digestfinal(digestcontext, digest, &len, sizeof digest); /* now, digest contains the 'digest', and len contains the length of the digest */</big> clean up pk11_destroycontext(digestcontext, pr_true); pk11_freesymkey(symkey); pk11_freeslot(slot); you can also look at a sample program illustrating this hmac include headers #include "nss.h" #include "pk11pub.h" make sure nss is initialized.the simplest init function, in case you don't need a nss da...
...And 3 more matches

NSS tools : modutil
enclose this list in quotation marks if it contains spaces.
...enclose this list in quotation marks if it contains spaces.
... installing a cryptographic module from a jar file pkcs #11 modules can also be loaded using a jar file, which contains all of the required libraries and an installation script that describes how to install the module.
...And 3 more matches

NSS tools : modutil
enclose this list in quotation marks if it contains spaces.
...enclose this list in quotation marks if it contains spaces.
... installing a cryptographic module from a jar file pkcs #11 modules can also be loaded using a jar file, which contains all of the required libraries and an installation script that describes how to install the module.
...And 3 more matches

Hacking Tips
the backtrace contains in the following order, the stack depth, the interpreter frame pointer (see js/src/vm/stack.h, stackframe class) or (nil) if compiled with ionmonkey, the file and line number of the call location and under parentheses, the jsscript pointer and the jsbytecode pointer (pc) executed.
... ionflags contains the names of each channel separated by commas.
... compilation logs and spew can be filtered with the ionfilter environment variable which contains locations as output in other spew channels.
...And 3 more matches

Index
in contrast, all native and host objects have a jsobjectmap at obj->map, which may be shared among a number of objects, and which contains the jsobjectops *ops pointer used to dispatch object operations from api calls.
...typically users of this function set vp to point to v, so that if conversion is successful, v now contains the converted value.
...name is the property name to assign to obj to hold the new object, and flags contains the property attributes to set for the newly created property.
...And 3 more matches

Bytecode Descriptions
(a jsop::enditer is always emitted at the end of the loop, and extra copies are emitted on "exit slides", where a break, continue, or return statement exits the loop.) typically a single try note entry marks the contiguous chunk of bytecode from the instruction after jsop::iter to jsop::enditer (inclusive); but if that range contains any instructions on exit slides, after a jsop::enditer, then those must be correctly noted as outside the loop.
...this instruction is used when an array literal contains a spreadelement.
...this walks the run-time environment chain looking for the environment record that contains the function.
...And 3 more matches

JIT Optimization Strategies
this page contains only historic information about this feature.
... call a function using f.apply(obj, arguments) if the function contains any use of the arguments object that falls out of the cases defined above, this optimization will be suppressed.
... call a function using f.apply(obj, arguments) if the function contains any use of the arguments object that falls out of the cases defined above, this optimization will be suppressed.
...And 3 more matches

nsIAccessibleRetrieval
apresshell the presentation shell which contains layout info for the dom node.
... apresshell the presentation shell which contains layout info for the dom node.
... ashell the presentation shell which contains layout info for the dom node.
...And 3 more matches

nsIAccessibleRole
role_window 9 represents the window frame, which contains child objects such as a title bar, client, and other objects contained in a window.
...there is not always a parent-child relationship between the grouping object and the objects it contains.
... role_table 24 represents a table that contains rows and columns of cells, and optionally, row headers and column headers.
...And 3 more matches

nsIFile
in addition, the native form cannot deal with files whose name contains characters outside the default system code page on windows.
... void appendrelativenativepath(in acstring relativefilepath); void appendrelativepath(in astring relativefilepath); nsifile clone(); boolean contains(in nsifile infile); void copyto(in nsifile newparentdir, in astring newname); void copytofollowinglinks(in nsifile newparentdir, in astring newname); void copytofollowinglinksnative(in nsifile newparentdir, in acstring newname); native code only!
... exceptions thrown ns_error_file_unrecognized_path indicates that anode incorrectly contains a path separator character.
...And 3 more matches

DevTools API - Firefox Developer Tools
a toolbox (and all the tools it contains) is linked to a target, which is the object the tools are debugging.
... parameters: tooldefinition {tooldefinition} - an object that contains information about the tool.
... parameters: themedefinition {themedefinition} - an object that contains information about the theme.
...And 3 more matches

RTCStatsReport - Web APIs
this statistics report contains a mapping of statistic category string names to objects containing the corresponding statistics data.
... type a domstring indicating the type of statistics the object contains, taken from the enum type rtcstatstype.
... csrc an rtccontributingsourcestats object which contains statistics related to a contributing source (csrc) that contributed to an inbound rtp stream.
...And 3 more matches

Attestation and Assertion - Web APIs
the attestation format contains two basic arraybuffers: clientdatajson - an arraybuffer that contains a json representation of what the browser saw when being asked to authenticate.
...contains authenticator data and an attestation statement.
... the authenticator data contains an attestedcredentialdata field.
...And 3 more matches

ARIA: grid role - Accessibility
the grid role is for a widget that contains one or more rows of cells.
... <button id="1b" tabindex="-1">1b</button> </td> <!-- more columns --> </tr> <tr> <th scope="row">aisle 2</th> <td tabindex="-1"> <button id="2a" tabindex="-1">2a</button> </td> <td tabindex="-1"> <button id="2b" tabindex="-1">2b</button> </td> <!-- more columns --> </tr> </tbody> </table> description a grid widget contains one or more rows with one or more cells of thematically related interactive content.
... home moves focus to the first cell in the row that contains focus.
...And 3 more matches

Setting up adaptive streaming media sources - Developer guides
once encoded your file structure may look something like this: play list -> /segments/news.mp4.mpd main segment folder -> /segments/main/ 100 kbps segment folder -> /segments/main/news100 contains (1.m4s, 2.m4s, 3.m4s ...
... ) 200 kbps segment folder -> /segments/main/news200 contains (1.m4s, 2.m4s, 3.m4s ...
... ) 300 kbps segment folder -> /segments/main/news300 contains (1.m4s, 2.m4s, 3.m4s ...
...And 3 more matches

<td>: The Table Data Cell element - HTML: Hypertext Markup Language
the html <td> element defines a cell of a table that contains data.
... colspan this attribute contains a non-negative integer value that indicates for how many columns the cell extends.
... headers this attribute contains a list of space-separated strings, each corresponding to the id attribute of the <th> elements that apply to this element.
...And 3 more matches

A typical HTTP session - HTTP
the url of a page to fetch contains both the domain name, and the port number, though the latter can be omitted if it is 80.
...a client request consists of text directives, separated by crlf (carriage return, followed by line feed), divided into three blocks: the first line contains a request method followed by its parameters: the path of the document, i.e.
... the final block is a data block, which contains the optional data.
...And 3 more matches

Map - JavaScript
it only contains what is explicitly put into it.
... an object has a prototype, so it contains default keys that could collide with your own keys if you're not careful.
... iteration methods map.prototype[@@iterator]() returns a new iterator object that contains an array of [key, value] for each element in the map object in insertion order.
...And 3 more matches

Porting the Library Detector - Archive of obsolete content
it adds a tooltip to each icon, which contains the library name and version.
... how the library detector works all the work is done inside a single file, librarydetector.xul this contains: a xul overlay a script the xul overlay adds a box element to the browser's status bar: the script does everything else.
...each test object contains a function called test(): if the function finds the library, it defines various additional properties for the test object, such as a version property containing the library version.
...And 2 more matches

Creating custom Firefox extensions with the Mozilla build system - Archive of obsolete content
public interfaces the public/ directory contains any interfaces that need to be accessed by other modules.
...topsrcdir = @top_srcdir@ srcdir = @srcdir@ vpath = @srcdir@ include $(depth)/config/autoconf.mk module = myextension xpidl_module = myextension xpi_name = myextension exports = \ myheader.h \ $(null) xpidlsrcs = \ myifirstcomponent.idl \ myisecondcomponent.idl \ $(null) include $(topsrcdir)/config/rules.mk xpidl_module is the name of the generated xpt file that contains type information about your idl interfaces.
...it contains stubs for the component .h and .cpp files that you can copy and paste into your implementation files.
...And 2 more matches

Enhanced Extension Installation - Archive of obsolete content
datasource structure the extension manager implements a rdf datasource which contains a composite of the two xml/rdf datasources at the two install locations.
... installation initiation when an item is installed from the web, xpinstall is invoked and it calls into the extension system when it discovers that the xpi file contains an install.rdf manifest.
... extension metadata the following files are now used to hold metadata: <profile>/extensions.ini -active items this file contains a list of active extension directories (i.e.
...And 2 more matches

Block and Line Layout Cheat Sheet - Archive of obsolete content
nsinlineframe mflags ns_inline_frame_contains_percent_aware_child this flag is set if the inline frame has any children that have a percentage value set (via the style context) for the width or height of the content area, padding, border, or margin.
... brs_isinlineincrreflow this flag is set in nsblockframe::reflow() if we detect that we're incrementally reflowing a linebox that contains inline frames.
...(why?) brs_applytopmargin this flag is set if the top margin should be considered when placing a linebox that contains a block frame.
...And 2 more matches

Migrate apps from Internet Explorer to Mozilla - Archive of obsolete content
dom differences the document object model (dom) is the tree structure that contains the document elements.
...the main issue here is when javascript, embedded inside an html document (thus, inside an <script> tag), generates html that contains a <script> tag.
...often when xml generates, it contains white spaces between xml nodes.
...And 2 more matches

Venkman Introduction - Archive of obsolete content
the toolbar contains icons for stop, continue, step over, step into, step out, profile, and pretty print commands.
...the type column contains a textual description of the type of the object.
...any loaded file which matches the file pattern, and contains an executable line at the requested line number will have a breakpoint set.
...And 2 more matches

Examples - Archive of obsolete content
this page contains the source code of the examples related to the "properly using css and javascript in xhtml documents" article.
... </p> <p> this document contains inline css rules contained in a <code>style</code> element and surrounded by a comment and javascript contained in a <code>script</code> element and surrounded by a comment.
... </p> <p> this document contains inline css rules contained in a <code>style</code> element and surrounded by a sgml comment.
...And 2 more matches

WAI-ARIA basics - Learn web development
the spec also contains a list of all the properties and states, with links to further information — see definitions of states and properties (all aria-* attributes).
...for example, voiceover gives you the following: on the <header> element — "banner, 2 items" (it contains a heading and the <nav>).
... on the <nav> element — "navigation 2 items" (it contains a list and a form).
...And 2 more matches

Document and website structure - Learn web development
main content: a big area in the center that contains most of the unique content of a given webpage, for example, the video you want to watch, or the main story you're reading, or the map you want to view, or the news headlines, etc.
... footer: a strip across the bottom of the page that generally contains fine print, copyright notices, or contact info.
...--> <form> <input type="search" name="q" placeholder="search query"> <input type="submit" value="go!"> </form> </nav> <!-- here is our page's main content --> <main> <!-- it contains an article --> <article> <h2>article heading</h2> <p>lorem ipsum dolor sit amet, consectetur adipisicing elit.
...And 2 more matches

Video and Audio APIs - Learn web development
the <video> element contains two <source> elements so that different formats can be loaded depending on the browser viewing the site.
...in the case of our play button, data-icon contains a capital "p".
...us ones: rwd.addeventlistener('click', mediabackward); fwd.addeventlistener('click', mediaforward); now on to the event handler functions — add the following code below your previous functions to define mediabackward() and mediaforward(): let intervalfwd; let intervalrwd; function mediabackward() { clearinterval(intervalfwd); fwd.classlist.remove('active'); if(rwd.classlist.contains('active')) { rwd.classlist.remove('active'); clearinterval(intervalrwd); media.play(); } else { rwd.classlist.add('active'); media.pause(); intervalrwd = setinterval(windbackward, 200); } } function mediaforward() { clearinterval(intervalrwd); rwd.classlist.remove('active'); if(fwd.classlist.contains('active')) { fwd.classlist.remove('active'); clearint...
...And 2 more matches

Accessibility API cross-reference
application frame n/a application see <div> and <nonstruct> a region that contains mostly site-oriented content, rather than page-specific content.
... composite (abstract role) a large perceivable region that contains information about the parent document such as copyright, authors' names etc.
... feed a landmark region that contains a collection of items and objects that, as a whole, combine to create a form.
...And 2 more matches

Gecko info for Windows accessibility vendors
contains more desktop-style widgets than html and follows a box layout model, rather than being text-flow based.
...none of the user interface contains standard windows controls -- not even the menus!
...if it is, than variant.bstrval contains the role string.
...And 2 more matches

HTML parser threading
main objects nshtml5parser contains the code for dealing with data from document.write().
... (for historical reasons, it also contains unrelated fragment parsing code that should be refactored into a separate class in due course.) nshtml5streamparser contains the code for dealing with data from the network.
...the speculation object has a queue of tree ops (into which the tree builder will now flush ops to instead of the tree op stage), an owning reference to the nshtml5owningutf16buffer that contains the starting point of the speculation, an index into the nshtml5owningutf16buffer defining the exact starting point within the buffer, the line number of the tokenizer at that point and a snapshot of the tree op state.
...And 2 more matches

Investigating leaks using DMD heap scan mode
this looks through all of the windows in all of the cc logs (which may leaked, this late in shutdown), and then filters out windows where the url contains example.com.
... known edges: 0x7f08975a24c0 [fragmentorelement (xhtml) head https://www.example.com] --[mattrsandchildren[i]]--> 0x7f0882fe3230 0x7f08967e7b20 [js object (htmlscriptelement)] --[unwrapdomobject(obj)]--> 0x7f0882fe3230 the first two lines mean that the script element 0x7f0882fe3230 contains a strong reference to the eventlistenermanager 0x7f0899b4e550.
... after that is done, we can finally find out which objects (possibly) point to other objects, using the block_analyzer script: python $srcdir/memory/replace/dmd/block_analyzer.py dmd-$pid.log.gz $leakaddr this will look through every block of memory in the log, and give some basic information about any block of memory that (possibly) contains a pointer to that object.
...And 2 more matches

nss tech note1
how to use the nss asn.1 and quickder decoders nss technical note: 1 nss 3.6 contains several decoders for asn.1 and der.two of them are extensively used and are part of the public nss api : the "classic" asn.1 decoder, written by lisa repka .
...this structure contains four fields : kind .
...if kind contains the sec_asn1_inline or sec_asn1_pointer modifiers, then it must point to the required subtemplate.
...And 2 more matches

NSS Tools certutil
bracket theissuer string with quotation marks if it contains spaces.
...bracket the nickname string with quotation marks if it contains spaces.
...bracket theoutput-file string with quotation marks if it contains spaces.
...And 2 more matches

NSS Tools modutil
enclose this list in quotation marks if it contains spaces.
...enclose this list in quotation marks if it contains spaces.
... this information file contains special scripting and must be declared in the jar archive's manifest file.
...And 2 more matches

Property cache
entry->vcap caches the results of part 1 above, telling which object contains the desired property.
...the entry is valid only for subsequent lookups that occur at the same instruction, for several reasons: the script, not the property cache entry, contains the id of the property being accessed.
...if pobj exists (that is, both the parent chain and the prototype chain are long enough) and it has the shape vshape, then it contains the desired property.
...And 2 more matches

JSAPI User Guide
note: the foss wiki page contains a few links to other libraries and programs that can make life easier when using spidermonkey and jsapi.
...lastly, the global object contains all the classes, functions, and variables that are available for javascript code to use.
...it contains everything described above.
...And 2 more matches

Gecko Roles
role_window represents the window frame, which contains child objects such as a title bar, client, and other objects contained in a window.
... role_table represents a table that contains rows and columns of cells, and optionally, row headers and column headers.
... role_animation represents an animation control, which contains content that changes over time, such as a control that displays a series of bitmap frames.
...And 2 more matches

Querying Places
the nsinavhistoryresult object returned by executequery()/executequeries() contains the list of matches to the given history or bookmarks query.
...contains uri, title, and other general info.
... nsinavhistoryvisitresultnode: derived from nsinavhistoryresultnode, contains session information.
...And 2 more matches

nsILocalFile
exceptions thrown ns_error_file_unrecognized_path indicates that relativefilepath incorrectly begins with a path separator character or otherwise contains invalid characters.
... exceptions thrown ns_error_file_unrecognized_path indicates that relativefilepath incorrectly begins with a path separator character or otherwise contains invalid characters.
... exceptions thrown ns_error_file_unrecognized_path indicates that filepath is not an absolute file path or that it contains characters that are invalid for the filesystem.
...And 2 more matches

nsITransferable
contains the serialized ancestor elements.
...contains numbers identifying where in the context the fragment came from.
... void getanytransferdata( out string aflavor, out nsisupports adata, out unsigned long adatalen ); parameters aflavor on return, contains the flavor of data that was retrieved.
...And 2 more matches

Index - Firefox Developer Tools
7 dom inspector faq dom_inspector the file menu contains approaches which will allow you to inspect a document.
...this tool contains several useful features for viewing and manipulating fonts applied to any document loaded in the browser including inspection of all fonts applied to the page, and precise adjustment of variable font axis values.
... 64 examine and edit the box model guide, tools with the select element button pressed, if you hover over an element in the page, the box model for the element is shown overlaid on the page: 65 inspect and select colors guide, inspector, tools in the css pane's rules view, if a rule contains a color value, you'll see a sample of the color next to the value: 66 open the inspector guide, inspector, tools there are two main ways to open the inspector: 67 reposition elements in the page starting in firefox 48 you can move absolutely positioned elements by dragging them around the page.
...And 2 more matches

CharacterData - Web APIs
the characterdata abstract interface represents a node object that contains characters.
... characterdata.appenddata() appends the given domstring to the characterdata.data string; when this method returns, data contains the concatenated domstring.
... characterdata.deletedata() removes the specified amount of characters, starting at the specified offset, from the characterdata.data string; when this method returns, data contains the shortened domstring.
...And 2 more matches

How whitespace is handled by HTML, CSS, and in the DOM - Web APIs
</h1> this source code contains a couple of line feeds after the doctype and a bunch of space characters before, after, and inside the <h1> element, but the browser doesn’t seem to care at all and just shows the words "hello world!" as if these characters didn’t exist at all: this is so that whitespace characters don't impact the layout of your page.
...to make it easier, we’ve illustrated all spaces with ◦, all tabs with ⇥ , and all line breaks with ⏎: this example: <h1>◦◦◦hello◦⏎ ⇥⇥⇥⇥<span>◦world!</span>⇥◦◦</h1> is rendered in the browser like so: hidden example <h1> hello <span> world!</span> </h1> the <h1> element contains only inline elements.
... in fact it contains: a text node (consisting of some spaces, the word "hello" and some tabs).
...And 2 more matches

Timing element visibility with the Intersection Observer API - Web APIs
the header the header is fairly simple, since for this example all it contains is some text.
...aliquam sed magna aliquam, vestibulum nisi at," + " cursus nunc.</p>"; function buildcontents() { for (let i=0; i<5; i++) { contentbox.appendchild(createarticle(loremipsum)); if (!(i % 2)) { loadrandomad(); } } } the variable loremipsum contains the text we'll use for the body of all of our articles.
...articles are inserted into the content box (that is, the <main> element that contains all the site content) after being created using a method called createarticle(), which we'll look at next.
...And 2 more matches

MediaTrackSettings - Web APIs
displaysurface a domstring which specifies the type of source the track contains; one of: application the stream contains all of the windows of the application chosen by the user rendered into the one video track.
... browser the stream contains the contents of a single browser tab selected by the user.
... monitor the stream's video track contains the entire contents of one or more of the user's screens.
...And 2 more matches

PaymentRequest.PaymentRequest() - Web APIs
syntax var paymentrequest = new paymentrequest(methoddata, details, [options]); parameters methoddata contains an array of identifiers for the payment methods the merchant web site accepts and any associated payment method specific data.
... each item in the array contains the following fields: supportedmethods for early implementations of the spec, this was a sequence of identifiers for payment methods that the merchant website accepts.
...this parameter contains the following fields: total the total amount of the payment request.
...And 2 more matches

TextRange - Web APIs
textrange.boundingleftread only returns the distance between the left edge of the rectangle that binds the textrange object and the left edge that completely contains the textrange object.
... textrange.boundingtopread only returns the distance between the top edge of the rectangle that binds the textrange object and the top edge that completely contains the textrange object.
... textrange.inrange() returns whether the current range contains the specified range.
...And 2 more matches

Web Speech API - Web APIs
speechrecognitionevent the event object for the result and nomatch events, and contains all the data associated with an interim or final speech recognition result.
... speechsynthesiserrorevent contains information about any errors that occur while processing speechsynthesisutterance objects in the speech service.
... speechsynthesisevent contains information about the current state of speechsynthesisutterance objects that have been processed in the speech service.
...And 2 more matches

<input type="email"> - HTML: Hypertext Markup Language
value a domstring representing an e-mail address, or empty events change and input supported common attributes autocomplete, list, maxlength, minlength, multiple, name,pattern, placeholder, readonly, required, size, and type idl attributes list and value methods select() value the <input> element's value attribute contains a domstring which is automatically validated as conforming to e-mail syntax.
... additional attributes in addition to the attributes that operate on all <input> elements regardless of their type, email inputs support the following attributes: attribute description list the id of the <datalist> element that contains the optional pre-defined autocomplete options maxlength the maximum number of characters the input should accept minlength the minimum number of characters long the input can be and still be considered valid multiple whether or not to allow multiple, comma-separated, e-mail addresses to be entered pattern a regular expression the input's contents mu...
...the list attribute specifies the id of a <datalist>, which in turn contains one <option> element per suggested value; each option's value is the corresponding suggested value for the email entry box.
...And 2 more matches

<th> - HTML: Hypertext Markup Language
abbr this attribute contains a short abbreviated description of the cell's content.
... colspan this attribute contains a non-negative integer value that indicates for how many columns the cell extends.
... headers this attribute contains a list of space-separated strings, each corresponding to the id attribute of the <th> elements that apply to this element.
...And 2 more matches

Array - JavaScript
array.prototype.entries() returns a new array iterator object that contains the key/value pairs for each index in the array.
... array.prototype.includes() determines whether the array contains a value, returning true or false as appropriate.
... array.prototype.keys() returns a new array iterator that contains the keys for each index in the array.
...And 2 more matches

Date.parse() - JavaScript
the date.parse() method parses a string representation of a date, and returns the number of milliseconds since january 1, 1970, 00:00:00 utc or nan if the string is unrecognized or, in some cases, contains illegal date values (e.g.
... fall-back to implementation-specific date formats this section contains implementation-specific behavior that can be inconsistent across implementations.
... however, if the string is recognized as an iso format string and it contains invalid values, it will return nan in all browsers compliant with es5 and later: // iso string with invalid values new date('2014-25-23').toisostring(); // throws "rangeerror: invalid date" in all es5-compliant browsers spidermonkey's implementation-specific heuristic can be found in jsdate.cpp.
...And 2 more matches

url - Archive of obsolete content
contains everything after the host of the url.
... parameters an hashmap that contains the parameters of the data url.
... data the string that contains the data in the data url.
... if the uri given to the constructor contains base64 parameter, this string is decoded.

util/array - Archive of obsolete content
globals functions has(array, element) returns true if the given array contains the element or false otherwise.
... hasany(array, elements) returns true if the given array contains any of the elements in the elements array, or false otherwise.
... remove(array, element) if the given array contains the given element, this function removes the element from the array and returns true.
... element : * the element to remove from the array if it contains it.

Localization - Archive of obsolete content
operties format are named "xx-yy.properties", where "xx-yy" is the name of the locale in question contain one entry for each string you want to localize, consisting of an identifier for the string and its translation in that locale, in the format identifier=translation need to use utf-8 without bom encoding lines starting with "#" (after optional whitespace) are comments suppose your add-on contains a single localizable string, represented in english as "hello!", and you want to supply us english and french french localizations.
... you'd add two files to the "locale" directory: my-addon/ data lib locale/ en-us.properties fr.properties "en-us.properties" contains this: hello_id= hello!
... "fr.properties" contains this: hello_id= bonjour !
... limitations the current localization support is a first step towards full support, and contains a number of limitations.

Chapter 5: Let's build a Firefox extension - Archive of obsolete content
listing 2: content for chrome.manifest content helloworld content/ overlay chrome://browser/content/browser.xul chrome://helloworld/content/overlay.xul register the content package (content instruction) line 1, beginning content, contains the code used to register the chrome’s content package.
... xul cross-package overlay (overlay instruction) line 2, beginning overlay, contains the code used to invoke the cross-package overlay, overlaying the firefox browser window, at chrome://browser/content/browser.xul with chrome://helloworld/content/overlay.xul.
...the menupop element 4 contains the merge point where you’re going to be adding a new menu item; you can see that it has the id menu_toolspopup.
...under the tool menu, the session store submenu contains two items—save session and clear sessions; in between them is a list of previously saved sessions that you can restore, most recent first.

Creating reusable content with CSS and XBL - Archive of obsolete content
this stylesheet contains the document style.
...this file contains the xbl binding.
...this separate stylesheet contains style for the binding.
...it only contains the text of the button's label.

Creating a Microsummary - Archive of obsolete content
ount"> <template> <transform xmlns="http://www.w3.org/1999/xsl/transform" version="1.0"> <output method="text"/> <template match="/"> </template> </transform> </template> </generator> including the download count to include the download count in the output of the xslt transform sheet, we need to add an xslt <value-of> element to the template whose select attribute contains an xpath expression that points to the node containing the count.
...it also contains basic functions for manipulating those nodes and their content.
...the new window will include an xpath field that contains this xpath expression pointing to the download count node: id('download-count').
... add a <value-of> element to the xslt <template> element whose select attribute contains that xpath expression: <?xml version="1.0" encoding="utf-8"?> <generator xmlns="http://www.mozilla.org/microsummaries/0.1" name="firefox download count"> <template> <transform xmlns="http://www.w3.org/1999/xsl/transform" version="1.0"> <output method="text"/> <template match="/"> <value-of select="id('download-count')"/> </template> </transform> </template> </generator> adding text to include the label fx downloads in the microsummary, we need to add an xslt <text> element to the xslt <template> element whose content is the text we want to add.

Rule Compilation - Archive of obsolete content
a query contains instructions for how to retrieve a set of data from the datasource.
...for rdf and xml, the query contains a set of instructions for navigating through the rdf graph or xml document tree.
...rules the template also contains a set of rules which define content to be generated based on various conditions.
...if the generated content itself contains hidden elements, those child elements will not be generated until necessary.

Custom toolbar button - Archive of obsolete content
note: for information about how to find the profile directory, see: profile folder explanation: the profile directory contains information specific to a user, keeping it separate from the application.
... explanation: this file contains information used by the application's extension manager.
... explanation: the chrome directory contains files that specify what the extension does.
... the next section in this tutorial contains examples of code that you can use to make your button do something useful.

Tabboxes - Archive of obsolete content
tabbox the outer box that contains the tabs along the top and the tab pages themselves.
... tabs the inner box that contains the individual tabs.
...it consists of two children, a tabs element which contains the row of tabs and a tabpanels elements which contains the tabbed pages.
...the tabbox also contains a tabpanels element which will appear below the tabs due to the vertical orientation on the whole tabbox.

Toolbars - Archive of obsolete content
« previousnext » a toolbar is usually placed along the top of a window and contains a number of buttons that perform common functions.
...for example, the mozilla browser window contains a textbox that displays the page url.
... toolbox a box that contains toolbars.
... toolbar a single toolbar that contains toolbar items such as buttons.

Trees - Archive of obsolete content
the second part, the tree body, contains the data to appear in the tree and is created with a treechildren tag.
...this interface contains thirty properties and functions which you may implement.
... treechildren this contains the main body of the tree where the individual rows of data will be displayed.
...the following tags are used: treeitem this contains a single parent row and all its descendants.

Using Remote XUL - Archive of obsolete content
it contains elements for all common ui widgets (menus, buttons, toolbars, etc.) and many sophisticated ones (trees, browsers, color pickers).
...its src attribute contains the url of the page being displayed in the iframe.
...the bar also contains two links that are independent of any category: faq and search.
...its label attribute contains the text to display in the item.

iframe - Archive of obsolete content
contentdocument type: document this read-only property contains the document object in the element.
... contentwindow type: todo use the contentwindow.wrappedjsobject to obtain a dom(html) window object docshell type: nsidocshell this read-only property contains the nsidocshell object for the document.
... webnavigation type: nsiwebnavigation this read-only property contains the nsiwebnavigation object for the document.
...it also contains the load constants used by reloadwithflags and loaduriwithflags.

Creating XULRunner Apps with the Mozilla Build System - Archive of obsolete content
the second section contains general options for your build.
...the third section contains options for building xulrunner.
...finally, the final section contains options specific to your application.
...contains the names of the subdirectories that need to be built, which at very least will include chrome and app.

NPAnyCallbackStruct - Archive of obsolete content
contains information required during embedded mode printing.
... syntax typedef struct { int32 type; } npanycallbackstruct; fields the data structure has the following field: type always contains np_print.
...the npanycallbackstruct structure contains information required by the platformprint field of the npembedprint structure during embedded mode printing.
...this structure contains the file pointer to which the plug-in should write its postscript data.

NPSetWindowCallbackStruct - Archive of obsolete content
contains information about the plug-in's unix window environment.
... syntax typedef struct { int32 type; display* display; visual* visual; colormap colormap; unsigned int depth; } npsetwindowcallbackstruct; fields the data structure has the following fields: type always contains np_setwindow.
...the npsetwindowcallbackstruct object, allocated by the browser, contains information required for the ws_info field of an npwindow.
...the type field of this structure always contains np_setwindow.

Introduction to Public-Key Cryptography - Archive of obsolete content
each certificate contains the name (dn) of that certificate's issuer, which is the same as the subject name of the next certificate in the chain.
... in figure 7, the engineering ca certificate contains the dn of the ca (that is, usa ca), that issued that certificate.
...otherwise, the issuer's certificate is checked to make sure it contains the appropriate subordinate ca indication in the red hat certificate type extension, and chain verification returns to step 1 to start again, but with this new certificate.
... key management before a certificate can be issued, the public key it contains and the corresponding private key must be generated.

Bounding volume collision detection with THREE.js - Game development
box3 / sphere both box3 and sphere have a containspoint method to do this test.
... var point = new three.vector3(2, 4, 7); knotbbox.containspoint(point); box3 vs.
... knotbbox.intersectsbox(otherbox); note: this is different from the box3.containsbox method, which checks whether the box3 fully wraps another one.
... // box vs box box3.intersectsbox(otherbox3); // box vs point box3.containspoint(point.position); demos there are two demos you can take a look at on our live demos page.

Sizing items in CSS - Learn web development
the border now contains that text because the height of the element is defined by the content.
...the third box contains the same image again, also with max-width: 100% set; in this case you can see how it has scaled down to fit into the box.
...the box contains a letter a, which has been given a font-size of 10vh.
...to see the example change when you change the viewport size you will need to load the example in a new browser window that you can resize (as the embedded <iframe> that contains the example shown above is its viewport).

Practical positioning examples - Learn web development
and now an ordered list: how exciting!</p> <ol> <li>dui neque eleifend lorem, a auctor libero turpis at sem.</li> <li>aliquam ut porttitor urna.</li> <li>nulla facilisi</li> </ol> </article> </div> </section> so here we've got a <section> element with a class of info-box, which contains a <ul> and a <div>.
... the unordered list contains three list items with links inside, which will become the actual tabs to click on for displaying our content panels.
... the div contains three <article> elements, which will make up the content panels that correspond to each tab.
... each panel contains some sample content.

Sending form data - Learn web development
an http request consists of two parts: a header that contains a set of global metadata about the browser's capabilities, and a body that can contain information necessary for the server to process the specific request.
...you can see this in action in our example php-example.html file — which contains the same example form as we saw before, with a method of post and an action of php-example.php.
... when it is submitted, it sends the form data to php-example.php, which contains the php code seen in the above block.
... greeting.html: this template just contains a line that renders the two bits of data passed to it when it is rendered.

HTML basics - Learn web development
take the <img> element that we already have in our html page: <img src="images/firefox-icon.png" alt="my test image"> this contains two attributes, but there is no closing </img> tag and no inner content.
...this contains all the content that you want to show to web users when they visit your page, whether that's text, images, videos, games, playable audio tracks or whatever else.
...it does this via the src (source) attribute, which contains the path to our image file.
...html contains 6 heading levels, <h1>–<h6>, although you'll commonly only use 3 to 4 at most: <h1>my main title</h1> <h2>my top level heading</h2> <h3>my subheading</h3> <h4>my sub-subheading</h4> now try adding a suitable title to your html page just above your <img> element.

JavaScript basics - Learn web development
*/ if your comment contains no line breaks, it's an option to put it behind two slashes like this: // this is a comment operators an operator is a mathematical symbol which produces a result based on two values (or variables).
...nameless) function, which contains the code we want the click event to run.
... function setusername() { let myname = prompt('please enter your name.'); localstorage.setitem('name', myname); myheading.textcontent = 'mozilla is cool, ' + myname; } the setusername() function contains a prompt() function, which displays a dialog box, similar to alert().
...we use localstorage's setitem() function to create and store a data item called 'name', setting its value to the myname variable which contains the user's entry for the name.

Creating hyperlinks - Learn web development
for example, the bbc homepage contains a many links that point not only to multiple news stories, but also different areas of the site (navigation functionality), login/registration pages (user tools), and more.
... anatomy of a link a basic link is created by wrapping the text or other content, see block level links, inside an <a> element and using the href attribute, also known as a hypertext reference, or target, that contains the web address.
...the title contains additional information about the link, such as which kind of information the page contains, or things to be aware of on the web site.
...when working locally with a web site, you'll have one directory that contains the entire site.

HTML table basics - Learn web development
adding headers with <th> elements now let's turn our attention to table headers — special cells that go at the start of a row or column and define the type of data that row or column contains (as an example, see the "person" and "age" cells in the first example shown in this article).
...the html contains the same dogs example as you saw above.
...the html contains the same animals example as you saw above.
...the html contains the same table you saw above, minus the column styling information.

Drawing graphics - Learn web development
previous overview: client-side web apis next the browser contains some very powerful graphics programming tools, from the scalable vector graphics (svg) language, to apis for drawing on html <canvas> elements, (see the canvas api and webgl).
...the ctx variable now contains a canvasrenderingcontext2d object, and all drawing operations on the canvas will involve manipulating this object.
...this contains a new method, translate(), which moves the origin point of the canvas: ctx.translate(width/2, height/2); this causes the coordinate origin (0, 0) to be moved to the center of the canvas, rather than being at the top left corner.
...the image looks like this: it contains six sprites that make up the whole walking sequence — each one is 102 pixels wide and 148 pixels high.

Storing the information you need — Variables - Learn web development
arrays an array is a single object that contains multiple values enclosed in square brackets and separated by commas.
...you can have a simple object that represents a box and contains information about its width, length, and height, or you could have an object that represents a person, and contains data about their name, height, weight, what language they speak, how to say hello to them, and more.
... for example, if you declare a variable and give it a value enclosed in quotes, the browser treats the variable as a string: let mystring = 'hello'; even if the value contains numbers, it is still a string, so be careful: let mynumber = '500'; // oops, this is still a string typeof mynumber; mynumber = 500; // much better — now this is a number typeof mynumber; try entering the four lines above into your console one by one, and see what the results are.
...the first time it is called, it should return string, as at that point the mynumber variable contains a string, '500'.

Getting started with Vue - Learn web development
public: this directory contains static assets that are published, but not processed by webpack during build (with one exception; index.html gets some processing).
... src: this directory contains the core of your vue app.
... <template> contains all the markup structure and display logic of your component.
... <script> contains all of the non-display logic of your component.

Displaying Places information using views
the overlay contains javascript required by the views.
... it also contains the built-in places context menu and commands, which you may want to take advantage of in your own uses of the views.
...(rowindex); to get the row index of a specific nsinavhistoryresultnode: var treeview = document.getelementbyid("myplacestreeview"); var rowindex = treeview.view.treeindexfornode(historyresultnode); to select a row in the tree whose node has a specific uri: var treeview = document.getelementbyid("myplacestreeview"); treeview.selectplaceuri("some place uri"); to select a row in the tree that contains a specific nsinavhistoryresultnode: var treeview = document.getelementbyid("myplacestreeview"); treeview.selectnode(somehistoryresultnode); placestreeview note: this section describes the implementation of the places tree view.
...if your view contains an internal instance of nsinavhistoryresultobserver, you would pass it instead.

Localizing without a specialized tool
localizing step-by-step dtd files in order to provide an example that can be viewed quickly in your ui, we'll start by translating a dtd file named searchbar.dtd that contains the string "manage search engines...".
... to start, make sure you are in /path/to/your/working/directory/l10n-mozilla-1.9.2/x-testing and then, type the command mkdir /browser/chrome/browser now, step back out to the broader directory that contains both your l10n base (l10n-mozilla-1.9.2) and the en-us source code (mozilla-1.9.2).
....properties files the property file "search.properties" contains the string "add %s".
... again, to start, make sure you are in /path/to/your/working/directory/l10n-mozilla-1.9.2/x-testing now, step back out to the broader directory that contains both your l10n base (l10n-mozilla-1.9.2) and the en-us source code (mozilla-1.9.2).

about:memory
(you don't need to take a screenshot.) this text contains fewer measurements than a memory reports file, but is often good enough to diagnose problems.
... note that in both cases the generated data contains privacy-sensitive details such as the full list of the web pages you have open in other tabs.
... explicit allocations this section contains a single tree, called "explicit", that measures all the memory allocated via explicit calls to heap allocation functions (such as malloc and new) and to non-heap allocations functions (such as mmap and virtualalloc).
... other measurements this section contains multiple trees, includes many that cross-cut the measurements in the "explicit" tree.

An overview of NSS Internals
a certificate contains lots of other details; for example, it contains a signature by a third party that expresses trust in the ownership relationship for the certificate.
...storage consists of multiple files: a key database file, which contains your secret keys, and a certificate database file which contains the public portion of your own certificates, the certificates of peers or cas, and a list of trust decisions (such as to not trust a built-in ca, or to explicitly trust other cas).
...a third file contains the list of external pkcs#11 modules that have been registered to be used by nss.
...the common structure to store such an untyped block is secitem, which contains a size and an untyped c pointer variable.

Python binding for NSS
example code the doc/examples directory contains numerous examples of python-nss programs and libraries you may wish to consult.
... test code in addition the test directory contains unit tests that also illustrate python-nss usage, however unlike the examples the unit tests are geared towards testing rather than expository illustration.
... other documentation the doc directory contains other files you may wish to review.
... base64_to_binary the following files were added: test_cert_request release 0.14.1 release date 2013-10-28 scm tag pynss_release_0_14_1 source download https://ftp.mozilla.org/pub/mozilla.org/security/python-nss/releases/pynss_release_0_14_1/src/ change log release 0.14.1 contains only modifications to tests and examples, otherwise functionally it is the same as release 0.14.0 fix bug in ssl_example.py and test_client_server.py where complete data was not read from socket.

JSPropertyOp
on entry, *vp contains the property's stored value or undefined if the property doesn't have a stored value.
...on entry, *vp contains the value being assigned to the property.
...on entry, *vp contains the value provided by the code defining or setting the property.
... on entry, *vp contains the property's stored value, or undefined if the property doesn't exist or doesn't have a stored value.

Parser API
"literal", value:42}) it is also available since firefox 7; it can be imported into the global object via: components.utils.import("resource://gre/modules/reflect.jsm") or into a specified object via: components.utils.import("resource://gre/modules/reflect.jsm", obj) built-in objects whether in spidermonkey shell or firefox (after importing), the global singleton object reflect currently contains just the parse method.
... if the generator flag is true, the function is a generator function, i.e., contains a yield expression in its body (other than in a nested function).
...the lexical flag is metadata indicating whether the switch statement contains any unnested let declarations (and therefore introduces a new lexical scope).
...the islexical flag is metadata indicating whether the switch statement contains any unnested let declarations (and therefore introduces a new lexical scope).

Mozilla internal string guide
rs (the default) adopted buffers (a buffer that the string class owns, but is not reference counted, because it came from somewhere else) dependent buffers, that is, an underlying buffer that the string class does not own, but that the caller that constructed the string guarantees will outlive the string instance in addition, there is a special string class, ns[c]autostring, that additionally contains an internal 64-unit buffer (intended primarily for use on the stack), leading to a fourth ownership model: storage within an auto string's stack buffer auto strings will prefer reference counting an existing reference-counted buffer over their stack buffer, but will otherwise use their stack buffer for anything that will fit in it.
...any string class with a capital "c" in the classname contains 8-bit bytes.
...any string class without the "c" contains 16-bit code units.
... tonewunicode(nsacstring) - (avoid if possible) creates a new zero-terminated char16_t* string which contains the value of the latin1 to utf-16 conversion.

nsAutoString
it is normally not a good idea to use this class on the heap, because it will allocate space which may be wasted if the string it contains is significantly smaller or any larger than 64 characters.
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset print32 findcharinset(const prunichar*, print32) const - source parameters prunichar* as...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters prunichar* astring print32 aoffset print32 rfindcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset equalsignorecase prbool equalsignorecase(const char*, print32) const - source parameters char* astring print32 acount tofloat float tofloat(print32*) const - source perform string to float conversion.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

nsCAutoString
it is normally not a good idea to use this class on the heap, because it will allocate space which may be wasted if the string it contains is significantly smaller or any larger than 64 characters.
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset rfindcharinset print32 rfindcharinset(const char*, print32) cons...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 rfindcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset compare print32 compare(const char*, prbool, print32) const - source compares a given string to this string.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace f...

nsIEffectiveTLDService
ns_error_unexpected or other error returned by nsiidnservice.normalize() when the hostname contains characters disallowed in uris.
... ns_error_unexpected this exception originates in the normalize() method in nsiidnservice and is thrown when ahost contains characters disallowed in uris.
... ns_error_unexpected or other error returned by nsiidnservice.normalize() when the hostname contains characters disallowed in uris.
... ns_error_unexpected this exception originates in the normalize() method in nsiidnservice and is thrown when ahost contains characters disallowed in uris.

nsIHttpActivityObserver
socket transport activity when the activity type is activity_type_socket_transport and the subtype is status_sending_to, the aextrasizedata parameter contains the number of bytes sent.
...http transaction activity for activity notifications of type activity_type_http_transaction, there are three activities that include extra data: activity_subtype_request_header aextrastringdata contains the text of the header.
... activity_subtype_response_header aextrastringdata contains the text of the response header.
... activity_subtype_response_complete aextrasizedata contains the total number of bytes received.

nsIHttpChannelInternal
void getrequestversion( out unsigned long major, out unsigned long minor ); parameters major on return, contains the request's major version number.
... minor on return, contains the request's minor version number.
...void getresponseversion( out unsigned long major, out unsigned long minor ); parameters major on return, contains the response's major version number.
... minor on return, contains the response's minor version number.

nsINavBookmarksService
note: renamed from bookmarksroot in gecko 1.9 placesroot long long the item id of the top-level folder that contains bookmarks, tags and all other places data.
... this contains administrative data as well as user data, and is therefore not recommended for use in queries.
... tagsfolder long long the item id of the top-level folder that contains the tag "folders".
... void replaceitem( in print64 folder, in nsiuri item, in nsiuri newitem ); parameters folder the folder which contains the item to replace.

nsISelection
void collapsetoend(); void collapsetostart(); boolean containsnode(in nsidomnode node, in boolean partlycontained); void deletefromdocument(); void extend(in nsidomnode parentnode, in long offset); void extendnative(in nsidomnode parentnode, in long offset); native code only!
...void collapsetostart(); containsnode() indicates whether the nsidomnode is part of the selection.
...boolean containsnode( in nsidomnode node, in boolean partlycontained ); parameters node the nsidomnode to look for partlycontained if partlycontained is set to pr_false, the function only returns true when the entire node is part of the selection.
... return value whether or not the range contains the requested noe.

XPCOM Interface Reference by grouping
(i'm fully aware that this will be a great point of discussion and probably will end in tears, but since i'm the first person to apparently take a swing at this, i get first dibs.) the primary sections consist of: browser this section contains elements associated with the view pane or the content of the "browser window" proper.
... data this section contains data wrappers and core object definitions.
... security this section contains apis for secure channel communications system this section contains application level interfaces including calls to external support elements (such as device calls).
... user this section contains elements specific to a given user's data storage.

Index
4 account interfaces code snippets, extension development, thunderbird this page contains a list of the interfaces that you'll will most likely use when writing extensions that work with email or other accounts.
... 7 address book interfaces mailnews, mozilla, seamonkey, thunderbird this page contains a list of the interfaces that you'll will most likely hit when writing patches for the address book or writing extensions.
... 27 folder pane interfaces this page contains a list of the interfaces that you'll will most likely use when writing extensions that affect the folder pane.
...a content/ folder sometimes contains the actual content files.

Working with windows in chrome code
it contains tips and example code on opening new windows, finding an already opened window, and passing data between different windows.
... technically speaking, it implements a number of interfaces, including nsidomjswindow and nsidomwindow, but it also contains the user-defined properties for global variables and functions of the window.
... content windows when a xul window contains a widget capable of displaying a page, such as <browser> or <iframe>, the document in that widget is, naturally, separate from the document of the chrome window itself.
...suppose the overlay contains a button to open the extension's options window which needs to read some data from the browser window.

Initialization and Destruction - Plugins
more than one instance of the same plug-in can exist if a single page contains multiple embedded plug-ins, or if several browser windows are open and display the same data type.
...the argn array contains the attribute names; the argv array contains the attribute values.
... in npp_new, the saved parameter contains previously saved data for this instance of the plug-in (saved by npp_destroy).
... the plug-in must free the memory for npsaveddata and the buffer it contains.

URLs - Plugins
the notifydata parameter contains private plug-in data that can be used to associate the request with the subsequent npp_urlnotify call (which returns this value) and/or to pass a pointer to some request-related payload.
...the notifydata parameter contains the private plug-in data passed to the corresponding call to npn_geturlnotify and npn_posturlnotify.
... the buf parameter identifies a local temporary file or data buffer that contains the data to post.
...the notifydata parameter contains plug-in-private data passed by npp_urlnotify and may be used for tracking multiple posts.

DOM Inspector internals - Firefox Developer Tools
the panelset contains two panels.
...at the top of each panel is a toolbar which contains a menu button allowing you to choose which viewer to display from the viewer list, a label displaying the name of the currently active viewer, and another menu button allowing you to issue viewer-specific commands.
...this comparison turns out to be quite apt, since each panel actually contains an anonymous browser, and individual viewers exist in separate documents loaded in the browser.
... shared structure overlays taking a look at the contents of inspector.xul, dom inspector's primary ui, will reveal that it contains almost no visible elements.

Debugger.Object - Firefox Developer Tools
boundarguments if the referent is a bound debuggee function, this is an array (in the debugger object’s compartment) that contains the debuggee values of the arguments object it was bound to.
... note that the array only contains the promises that directly depend on the referent promise.
... codeis interpreted as strict mode code when it contains a use strict directive.
... note that, like executeinglobal, any declarations it contains affect the referent global object, even ascode is evaluated in an environment extended according tobindings.

Debugger.Script - Firefox Developer Tools
the elements of the array are objects, each of which describes a single entry point, and contains the following properties: linenumber: the line number for which offset is an entry point columnnumber: the column number for which offset is an entry point offset: the bytecode instruction offset of the entry point for example, suppose we have a script for the following source code: a=[] for (i=1; i < 10; i++) // it's hip to be square.
...if the script contains no executable code at that line, the array returned is empty.
... getoffsetscoverage(): if the instance refers to a jsscript, return null or an array which contains informations about the coverage of all opcodes.
... the elements of the array are objects, each of which describes a single opcode, and contains the following properties: linenumber: the line number of the current opcode.

Blob - Web APIs
to create a blob that contains a subset of another blob's data, use the slice() method.
... constructor blob() returns a newly created blob object which contains a concatenation of all of the data in the array passed into the constructor.
...having converted the data into an object url, it can be used in a number of ways, including as the value of the <img> element's src attribute (assuming the data contains an image, of course).
...the following code reads the content of a blob as a typed array: const reader = new filereader(); reader.addeventlistener('loadend', () => { // reader.result contains the contents of blob as a typed array }); reader.readasarraybuffer(blob); another way to read content from a blob is to use a response.

DisplayMediaStreamConstraints.video - Web APIs
this may be a single one of the following strings, or a list of them to allow multiple source surfaces: application the stream contains all of the windows of the application chosen by the user rendered into the one video track.
... browser the stream contains the contents of a single browser tab selected by the user.
... monitor the stream's video track contains the entire contents of one or more of the user's screens.
... window the stream contains a single window selected by the user for sharing.

FileReader - Web APIs
filereader.readasarraybuffer() starts reading the contents of the specified blob, once finished, the result attribute contains an arraybuffer representing the file's data.
... filereader.readasbinarystring() starts reading the contents of the specified blob, once finished, the result attribute contains the raw binary data from the file as a string.
... filereader.readasdataurl() starts reading the contents of the specified blob, once finished, the result attribute contains a data: url representing the file's data.
... filereader.readastext() starts reading the contents of the specified blob, once finished, the result attribute contains the contents of the file as a text string.

Using the Geolocation API - Web APIs
sition.coords.latitude, position.coords.longitude); } function error() { alert('sorry, no position available.'); } const options = { enablehighaccuracy: true, maximumage: 30000, timeout: 27000 }; const watchid = navigator.geolocation.watchposition(success, error, options); describing a position the user's location is described using a geolocationposition object instance, which itself contains a geolocationcoordinates object instance.
... the geolocationposition instance contains only two things, a coords property that contains the geolocationcoordinates instance, and a timestamp property that contains a domtimestamp instance representing the time at which the position data was retrieved.
... the geolocationcoordinates instance contains a number of properties, but the two you'll use most commonly are latitude and longitude, which are what you need to draw your position on a map.
...this object type contains two properties, a code indicating what type of error has been returned, and a human-readable message that describes what the error code means.

Geolocation API - Web APIs
interfaces geolocation the main class of this api — contains methods to retrieve the user's current position, watch for changes in their position, and clear a previously-set watch.
...a geolocationposition instance is returned by a successful call to one of the methods contained inside geolocation, inside a success callback, and contains a timestamp plus a geolocationcoordinates object instance.
... geolocationcoordinates represents the coordinates of a user's position; a geolocationcoordinates instance contains latitude, longitude, and other important related information.
... geolocationpositionerror a geolocationpositionerror is returned by an unsuccessful call to one of the methods contained inside geolocation, inside an error callback, and contains an error code and message.

HTMLMediaElement - Web APIs
htmlmediaelement.played read only returns a timeranges object that contains the ranges of the media source that the browser has played, if any.
... htmlmediaelement.seekable read only returns a timeranges object that contains the time ranges that the user is able to seek to, if any.
... htmlmediaelement.src is a domstring that reflects the src html attribute, which contains the url of a media resource to use.
... htmlmediaelement.mozcapturestream() [enter description] htmlmediaelement.mozcapturestreamuntilended() [enter description] htmlmediaelement.mozgetmetadata() returns object, which contains properties that represent metadata from the playing media resource as {key: value} pairs.

MediaTrackConstraints - Web APIs
this may be a single one of the following strings, or a list of them to allow multiple source surfaces: application the stream contains all of the windows of the application chosen by the user rendered into the one video track.
... browser the stream contains the contents of a single browser tab selected by the user.
... monitor the stream's video track contains the entire contents of one or more of the user's screens.
... window the stream contains a single window selected by the user for sharing.

RTCStats - Web APIs
type a domstring indicating the type of statistics the object contains, taken from the enum type rtcstatstype.
... rtcinboundrtpstreamstats contains statistics that can only be measured on a receiver at the local end of the rtp connection.
... rtcoutboundrtpstreamstats contains statistics related to the receiver at the remote end of the rtp stream.
... rtcoutboundrtpstreamstats contains statistics about the local sending endpoint of an rtp stream.

RTCStatsType - Web APIs
csrc an rtccontributingsourcestats object which contains statistics related to a contributing source (csrc) that contributed to an inbound rtp stream.
... data-channel an rtcdatachannelstats object which contains statistics about each rtcdatachannel on the connection.
... remote-outbound-rtp the report is an rtcremoteoutboundrtpstreamstats object that contains statistics about your inbound rtp (inbound-rtp) stream, but from the perspective of the remote peer.
... transport an object that contains statistics related to a transport for an rtcpeerconnection.

:where() - CSS: Cascading Style Sheets
this <a href="https://mozilla.org">contains a link</a>.
...this <a href="https://developer.mozilla.org">also contains a link</a>.
...this <a href="https://mozilla.org">contains a link</a>.
...this <a href="https://developer.mozilla.org">also contains a link</a>.

Adding captions and subtitles to HTML5 video - Developer guides
the various attributes of this element allow us to specify such things as the type of content that we're adding, the language it's in, and of course a reference to the text file that contains the actual subtitle information.
...al setup as with all the other buttons, one of the first things we need to do is store a handle to the subtitles' button: var subtitles = document.getelementbyid('subtitles'); we also initially turn off all subtitles, in case the browser turns any of them on by default: for (var i = 0; i < video.texttracks.length; i++) { video.texttracks[i].mode = 'hidden'; } the video.texttracks property contains an array of all the text tracks attached to the video.
...this can easily be done by adding an .htaccess file to an appropriate directory that contains addtype text/vtt .vtt.
... chrome and opera these browsers have similar implementations again: subtitles are enabled by default and the default control set contains a 'cc' button that turns subtitles on and off.

Using HTML sections and outlines - Developer guides
section elements in html5 html navigational element (<nav>) defines a section that contains navigation links that appear often on a site.
...it contains all the content and html tags.
... html header element (<header>) defines a page area that typically contains a logo, title, and navigation.
... html footer element (<footer>) defines a page footer, which typically contains copyright or legal notices and sometimes some links.

<input type="tel"> - HTML: Hypertext Markup Language
a telephone number, or empty events change and input supported common attributes autocomplete, list, maxlength, minlength, pattern, placeholder, readonly, and size idl attributes list, selectionstart, selectionend, selectiondirection, and value methods select(), setrangetext(), setselectionrange() value the <input> element's value attribute contains a domstring that either represents a telephone number or is an empty string ("").
... additional attributes in addition to the attributes that operate on all <input> elements regardless of their type, telephone number inputs support the following attributes: attribute description list the id of the <datalist> element that contains the optional pre-defined autocomplete options maxlength the maximum length, in utf-16 characters, to accept as a valid input minlength the minimum length that is considered valid for the field's contents pattern a regular expression the entered value must match to pass constraint validation placeholder an example value to display inside the field when it has no value readonly a boolean attribute which, if present, indicates that the field's contents should not be u...
...the list attribute specifies the id of a <datalist> element, which in turn contains one <option> element per suggested value; each option's value is the corresponding suggested value for the telephone number entry box.
... <span class="validity"></span> </span> <span class="number2div"> <input id="number2" name="number2" type="tel" required placeholder="second part" pattern="[0-9]{4}" aria-label="second part of number"> <span class="validity"></span> </span> </div> <div> <button>submit</button> </div> </form> the javascript is relatively simple — it contains an onchange event handler that, when the <select> value is changed, updates the <input> element's pattern, placeholder, and aria-label to suit the format of telephone numbers in that country/territory.

<link>: The External Resource Link element - HTML: Hypertext Markup Language
for example, a link to the site's favicon: <link rel="icon" href="favicon.ico"> there are a number of other icon rel values, mainly used to indicate special icon types for use on various mobile platforms, e.g.: <link rel="apple-touch-icon-precomposed" sizes="114x114" href="apple-icon-114.png" type="image/png"> the sizes attribute indicates the icon size, while the type contains the mime type of the resource being linked.
... integrity contains inline metadata — a base64-encoded cryptographic hash of the resource (file) you’re telling the browser to fetch.
...it must be present only if the rel contains a value of icon or a non-standard type such as apple's apple-touch-icon.
... note: most icon formats are only able to store one single icon; therefore most of the time the sizes attribute contains only one entry.

JavaScript modules - JavaScript
the modules directory's two modules are described below: canvas.js — contains functions related to setting up the canvas: create() — creates a canvas with a specified width and height inside a wrapper <div> with a specified id, which is itself appended inside a specified parent element.
... square.js — contains: name — a constant containing the string 'square'.
...to get modules to work correctly in a browser, you need to make sure that your server is serving them with a content-type header that contains a javascript mime type such as text/javascript.
...as an example, the square.js file now contains all its functionality in a single class: class square { constructor(ctx, listid, length, x, y, color) { ...

BigInt64Array - JavaScript
bigint64array.prototype.entries() returns a new array iterator object that contains the key/value pairs for each index in the array.
... bigint64array.prototype.keys() returns a new array iterator that contains the keys for each index in the array.
... bigint64array.prototype.values() returns a new array iterator object that contains the values for each index in the array.
... bigint64array.prototype[@@iterator]() returns a new array iterator object that contains the values for each index in the array.

BigUint64Array - JavaScript
biguint64array.prototype.entries() returns a new array iterator object that contains the key/value pairs for each index in the array.
... biguint64array.prototype.keys() returns a new array iterator that contains the keys for each index in the array.
... biguint64array.prototype.values() returns a new array iterator object that contains the values for each index in the array.
... biguint64array.prototype[@@iterator]() returns a new array iterator object that contains the values for each index in the array.

Float32Array - JavaScript
float32array.prototype.entries() returns a new array iterator object that contains the key/value pairs for each index in the array.
... float32array.prototype.keys() returns a new array iterator that contains the keys for each index in the array.
... float32array.prototype.values() returns a new array iterator object that contains the values for each index in the array.
... float32array.prototype[@@iterator]() returns a new array iterator object that contains the values for each index in the array.

Float64Array - JavaScript
float64array.prototype.entries() returns a new array iterator object that contains the key/value pairs for each index in the array.
... float64array.prototype.keys() returns a new array iterator that contains the keys for each index in the array.
... float64array.prototype.values() returns a new array iterator object that contains the values for each index in the array.
... float64array.prototype[@@iterator]() returns a new array iterator object that contains the values for each index in the array.

Int16Array - JavaScript
int16array.prototype.entries() returns a new array iterator object that contains the key/value pairs for each index in the array.
... int16array.prototype.keys() returns a new array iterator that contains the keys for each index in the array.
... int16array.prototype.values() returns a new array iterator object that contains the values for each index in the array.
... int16array.prototype[@@iterator]() returns a new array iterator object that contains the values for each index in the array.

Int32Array - JavaScript
int32array.prototype.entries() returns a new array iterator object that contains the key/value pairs for each index in the array.
... int32array.prototype.keys() returns a new array iterator that contains the keys for each index in the array.
... int32array.prototype.values() returns a new array iterator object that contains the values for each index in the array.
... int32array.prototype[@@iterator]() returns a new array iterator object that contains the values for each index in the array.

Int8Array - JavaScript
int8array.prototype.entries() returns a new array iterator object that contains the key/value pairs for each index in the array.
... int8array.prototype.keys() returns a new array iterator that contains the keys for each index in the array.
... int8array.prototype.values() returns a new array iterator object that contains the values for each index in the array.
... int8array.prototype[@@iterator]() returns a new array iterator object that contains the values for each index in the array.

Promise.all() - JavaScript
this returned promise will resolve when all of the input's promises have resolved, or if the input iterable contains no promises.
... an asynchronously resolved promise if the iterable passed contains no promises.
... var p1 = promise.resolve(3); var p2 = 1337; var p3 = new promise((resolve, reject) => { settimeout(() => { resolve("foo"); }, 100); }); promise.all([p1, p2, p3]).then(values => { console.log(values); // [3, 1337, "foo"] }); if the iterable contains non-promise values, they will be ignored, but still counted in the returned promise array value (if the promise is fulfilled): // this will be counted as if the iterable passed is empty, so it gets fulfilled var p = promise.all([1,2,3]); // this will be counted as if the iterable passed contains only the resolved promise with value "444", so it gets fulfilled var p2 = promise.all([1,2,3, promise...
....resolve(444)]); // this will be counted as if the iterable passed contains only the rejected promise with value "555", so it gets rejected var p3 = promise.all([1,2,3, promise.reject(555)]); // using settimeout we can execute code after the stack is empty settimeout(function() { console.log(p); console.log(p2); console.log(p3); }); // logs // promise { <state>: "fulfilled", <value>: array[3] } // promise { <state>: "fulfilled", <value>: array[4] } // promise { <state>: "rejected", <reason>: 555 } asynchronicity or synchronicity of promise.all this following example demonstrates the asynchronicity (or synchronicity, if the iterable passed is empty) of promise.all: // we are passing as argument an array of promises that are already resolved, // to trigger promise.all as soon as pos...

String.prototype.split() - JavaScript
if separator contains multiple characters, that entire character sequence must be found in order to split.
... if separator is omitted or does not occur in str, the returned array contains one element consisting of the entire string.
...how are you doing?' const splits = mystring.split(' ', 3) console.log(splits) this script displays the following: ["hello", "world.", "how"] splitting with a regexp to include parts of the separator in the result if separator is a regular expression that contains capturing parentheses (), matched results are included in the array.
... reversing a string using split() this is not a robust way to reverse a string: const str = 'asdfghjkl' const strreverse = str.split('').reverse().join('') // 'lkjhgfdsa' // split() returns an array on which reverse() and join() can be applied it doesn't work if the string contains grapheme clusters, even when using a unicode-aware split.

TypedArray - JavaScript
typedarray.prototype.entries() returns a new array iterator object that contains the key/value pairs for each index in the array.
... typedarray.prototype.keys() returns a new array iterator that contains the keys for each index in the array.
... typedarray.prototype.values() returns a new array iterator object that contains the values for each index in the array.
... typedarray.prototype[@@iterator]() returns a new array iterator object that contains the values for each index in the array.

Uint16Array - JavaScript
uint16array.prototype.entries() returns a new array iterator object that contains the key/value pairs for each index in the array.
... uint16array.prototype.keys() returns a new array iterator that contains the keys for each index in the array.
... uint16array.prototype.values() returns a new array iterator object that contains the values for each index in the array.
... uint16array.prototype[@@iterator]() returns a new array iterator object that contains the values for each index in the array.

Uint32Array - JavaScript
uint32array.prototype.entries() returns a new array iterator object that contains the key/value pairs for each index in the array.
... uint32array.prototype.keys() returns a new array iterator that contains the keys for each index in the array.
... uint32array.prototype.values() returns a new array iterator object that contains the values for each index in the array.
... uint32array.prototype[@@iterator]() returns a new array iterator object that contains the values for each index in the array.

Uint8Array - JavaScript
uint8array.prototype.entries() returns a new array iterator object that contains the key/value pairs for each index in the array.
... uint8array.prototype.keys() returns a new array iterator that contains the keys for each index in the array.
... uint8array.prototype.values() returns a new array iterator object that contains the values for each index in the array.
... uint8array.prototype[@@iterator]() returns a new array iterator object that contains the values for each index in the array.

Uint8ClampedArray - JavaScript
uint8clampedarray.prototype.entries() returns a new array iterator object that contains the key/value pairs for each index in the array.
... uint8clampedarray.prototype.keys() returns a new array iterator that contains the keys for each index in the array.
... uint8clampedarray.prototype.values() returns a new array iterator object that contains the values for each index in the array.
... uint8clampedarray.prototype[@@iterator]() returns a new array iterator object that contains the values for each index in the array.

dx - SVG: Scalable Vector Graphics
for <altglyph>, if it contains a single value, dx defines a shift along the x-axis for all alternate glyph.
... value <number> default value 0 animatable yes text for <text>, if it contains a single value, dx defines a shift along the x-axis for all glyphs.
... for <tref>, if it contains a single value, dx defines a shift along the x-axis for all glyphs.
... value list of <length> default value none animatable yes tspan for <tspan>, if it contains a single value, dx defines a shift along the x-axis for all alternate glyph.

dy - SVG: Scalable Vector Graphics
for <altglyph>, if it contains a single value, dy defines a shift along the y-axis for all alternate glyph.
... value <number> default value 0 animatable yes text for <text>, if it contains a single value, dy defines a shift along the y-axis for all glyphs.
... for <tref>, if it contains a single value, dy defines a shift along the y-axis for all glyphs.
... value list of <length> default value none animatable yes tspan for <tspan>, if it contains a single value, dy defines a shift along the y-axis for all alternate glyph.

Introduction to using XPath in JavaScript - XPath
note that, if the xpathexpression contains a namespace prefix, this will result in a domexception being thrown with the code namespace_err.
...there is a section in the appendix which contains a full list of the available constants.
... numbervalue stringvalue booleanvalue example the following uses the xpath expression count(//p) to obtain the number of <p> elements in an html document: var paragraphcount = document.evaluate( 'count(//p)', document, null, xpathresult.any_type, null ); alert( 'this document contains ' + paragraphcount.numbervalue + ' paragraph elements' ); although javascript allows us to convert the number to a string for display, the xpath interface will not automatically convert the numerical result if the stringvalue property is requested, so the following code will not work: var paragraphcount = document.evaluate('count(//p)', document, null, xpathresult.any_type, null ); alert( 'th...
...is document contains ' + paragraphcount.stringvalue + ' paragraph elements' ); instead, it will return an exception with the code ns_dom_type_error.

Understanding WebAssembly text format - WebAssembly
so for example, after executing the following function: (func (param $p i32) (result i32) local.get $p local.get $p i32.add) the stack contains exactly one i32 value — the result of the expression ($p + $p), which is handled by i32.add.
...for example, the following module contains two functions — one just returns the value 42, the other returns the result of calling the first plus one: (module (func $getanswer (result i32) i32.const 42) (func (export "getanswerplus1") (result i32) call $getanswer i32.const 1 i32.add)) note: i32.const just defines a 32-bit integer and pushes it onto the stack.
...webassembly contains instructions like i32.load and i32.store for reading and writing from linear memory.
... note: the wasm-bindgen documentation contains some useful information on how to take advantage of externref from rust.

clipboard - Archive of obsolete content
var clipboard = require("sdk/clipboard"); clipboard.set("<blink>lorem ipsum dolor sit amet</blink>", "html"); if the clipboard contains html content, open it in a new tab.
... var clipboard = require("sdk/clipboard"); clipboard.set("data:image/png;base64,ivborw0kggoaaaansuheugaaacaaaaagcaya" + "aabzenr0aaaasuleqvryhe3o0qkaiawd0eyqe3q993aq3cbsukpygfsnty" + "n5ugbqpk0baadgp0brdwxwlweaaaaagpsa3rzdaaaaahgpcgrpganzq2fg" + "bwrr9aaaaabjru5erkjggg%3d%3d"); if the clipboard contains an image, open it in a new tab.
...this property is an array contains all types in which the data currently on the clipboard is available.

context-menu - Archive of obsolete content
for example, this item appears whenever the context menu is invoked on a page that contains at least one image: require("sdk/context-menu").item({ label: "this page has images", contentscript: 'self.on("context", function (node) {' + ' return !!document.queryselector("img");' + '});' }); note that the listener function has a parameter called node.
...; cm.item({ label: "edit mozilla image", context: [ cm.urlcontext(["*.mozilla.org", "*.mozilla.com"]), cm.selectorcontext("img") ], contentscript: 'self.on("click", function (node, data) {' + ' self.postmessage(node.src);' + '});', onmessage: function (imgsrc) { openimageeditor(imgsrc); } }); show an "edit page images" item when the page contains at least one image: var cm = require("sdk/context-menu"); cm.item({ label: "edit page images", // this ensures the item only appears during the page context.
... selectioncontext() creates a context that occurs when a page contains a selection.

passwords - Archive of obsolete content
it contains the following properties: username the username.
...if it does, this property contains the value for the "realm" field.
... it takes an options object as an argument: this contains all the properties for the new credential.

self - Archive of obsolete content
name this property contains the add-on's short name.
... version this property contains the add-on's version string.
... loadreason this property contains of the following strings describing the reason your add-on was loaded: install enable startup upgrade downgrade isprivatebrowsingsupported this property indicates whether or not the add-on supports private browsing.

dev/panel - Archive of obsolete content
this file contains the specification of the panel's user interface.
...if the message reply in the remote debugging protocol would contain an actor id, then in volcan.js the object that fulfills the promise contains that actor instance.
... if the message reply contains some json object, then in volcan.js the object that fulfills the promise includes a corresponding json object.

stylesheet/style - Archive of obsolete content
source string,array a string, or an array of strings, that contains css rules.
... style properties source an array of strings that contains the css rule(s) specified in the constructor's option; null if no source option was given to the constructor.
... uri an array of strings that contains the stylesheet local uri(s) specified in the constructor's option; null if no uri option was given to the constructor.

package.json - Archive of obsolete content
the package.json file contains manifest data for your add-on, providing not only descriptive information about the add-on for presentation in the add-ons manager, but other metadata required of add-ons.
... boolean value: true if the add-on contains an embedded webextension.
... useful when the extension contains binaries.

Drag and Drop JavaScript Wrapper - Archive of obsolete content
the object contains a series of functions, one for each event handler (except for dragenter where it has nothing special to do).
...var textobserver = { getsupportedflavours : function () { var flavours = new flavourset(); flavours.appendflavour("text/unicode"); return flavours; } } the flavours list contains only one flavour, which is 'text/unicode'.
...by the time ondrop is called, the wrapper has called getsupportedflavours to determine the best flavour for the drop, so the transfer object only contains the data for the best matching flavour.

Repackaging Firefox - Archive of obsolete content
however, it's still recommended that you look through this tutorial, as it contains tips specific for creating extensions of this type, and there are a few options that you will need to set to ensure a smooth upgrade path for users.
...r.properties locale/nl/partner.properties locale/pl/partner.properties locale/pt-br/partner.properties locale/pt-pt/partner.properties locale/ru/partner.properties locale/sk/partner.properties locale/sv-se/partner.properties locale/tr/partner.properties locale/zh-cn/partner.properties locale/zh-tw/partner.properties partner-bookmarks.xml one by one, the files listed above are: chrome.manifest contains a specialized listing of the contents of the xpi.
...the source directory is a directory that contains the windows installer, mac disk image (.dmg), and/or linux tarball of the standard firefox that you wish to customize.

Creating a Help Content Pack - Archive of obsolete content
nc:base contains the base url relative to which the help content referenced in the descriptor file is located.
...an example of how to use this attribute follows: <!-- assumptions: win-toc.rdf contains windows- and os/2-specific info, unix-toc.rdf contains linux- and mac-specific info.
...nc:link contains a uri referencing what will be displayed in the viewer when the entry is accessed.

Modularization techniques - Archive of obsolete content
#include "nsifactory.h" // {d3944dd0-ae1a-11d1-b66c-00805f8a2676} #define ns_sample_cid \ {0xd3944dd0, 0xae1a, 0x11d1, \ {0xb6, 0x6c, 0x00, 0x80, 0x5f, 0x8a, 0x26, 0x76}} extern nsresult getsamplefactory(nsifactory **aresult); file nssample.cpp nssample.cpp contains both the declaration and implementation of our sample class, and the declaration and implementation of our class factory.
...a dll that contains a factory need to define one or two exported functions: // returns the factory associated with the given class id extern "c" ns_export nsresult nsgetfactory(const nscid &acid, nsifactory **afactory); // returns whether the dll can be unloaded now.
...if your dll contains multiple factories, you'll need to add conditional code to determine which one to return.

URIs and URLs - Archive of obsolete content
nssimpleuri contains setters and getters for the uri and the components of an uri: scheme and path (non-scheme).
...nsstandardurl also contains the facilities to parse these typ of urls, to break the specification of the url "spec" down into the most basic segments.
...to stay almost generic necko contains three parsers for the main classes of standard urls.

Introduction to XUL - Archive of obsolete content
this paper contains a short introduction to mozilla front-end architecture, concentrating on the task of building uis.
...the menubar contains a single menu called "file".
... this menu contains a single menu item that has a simple javascript onclick handler attached to it.

SeaMonkey - making custom toolbar (SM ver. 1.x) - Archive of obsolete content
explanation: the chrome directory contains program files that are part of seamonkey itself, together with other files that are provided by extensions.
... explanation: this file contains details of your extension, and specifies how it modifies seamonkey.
... the next section in this tutorial contains examples of code that you can use to make your button do something useful.

Adding Style Sheets - Archive of obsolete content
style sheets a style sheet is a file which contains style information for elements.
...the style sheet contains information such as the fonts, colors, borders, and size of elements.
...in mozilla, this will be translated as the file global.css, which contains default style information for xul elements.

Creating a Window - Archive of obsolete content
this file contains all the default declarations for all of the xul elements.
...the syntax is described below: window.open(url,windowname,flags); where the flags contains the flag "chrome" as in this example window.open("chrome://navigator/content/navigator.xul", "bmarks", "chrome,width=600,height=300"); if you are using firefox, try below: window.open("chrome://browser/content/places/places.xul", "bmarks", "chrome,width=600,height=300"); you can test lines of javascript like these in the error console.
... the extension developer's extension contains an xul editor that allows you to type in xul code and see the results in real-time from within mozilla!

Grids - Archive of obsolete content
a grid contains elements that are aligned in rows just like tables.
...each row contains two elements, both buttons.
...the second column contains a box in its second row, which in turn contains two elements, a textbox and a button.

Introduction to RDF - Archive of obsolete content
you can use any of the provided rdf datasources to populate trees with data or you can point to an rdf file stored in xml which contains the data.
...it contains a fairly simple set of elements.
...a bookmarks list contains a set of records, each with a set of data associated with it, such as a url, a bookmark title and a visited date.

More Tree Features - Archive of obsolete content
as can be seen in the image, a small plus or minus sign (often called a twisty) has appeared next to the first row, indicating that it contains child rows.
...the outer treeitem element contains a single treerow element and a treechildren element.
... the former creates the data for the parent row and the latter contains the child items.

Property Files - Archive of obsolete content
a property file contains a set of strings.
... here, the property file contains three properties.
...in case you need to format a string that already contains the percentage character in it (to get something like "50% off" returned), escape the percentage character with another percentage character, like this: my.percentage.string = %s%% off not escaping the percentage character will generate an incorrect string that strips the space character between the percentage character and the next word of the string ("50%off").

The Implementation of the Application Object Model - Archive of obsolete content
the downloaded file contains an aol instant messenger button, and the user really doesn't want that on the toolbar.
...it makes sense to maintain a clean separation between the web application and the web documents that the application contains.
...suppose that a bookmarks folder contains a mailbox folder, a composer page template, and a bookmark.

Application Update - Archive of obsolete content
other apps may wish to show this ui, and supply // a whatsnewurl field in their brand.properties that contains a link to a page // which tells users what's new in this new update.
... update.xml contains only information about the update.
... it points to the update mar file (a mozilla archive) which contains all files which are going to be updates it also contains a sha1 hash and file size used for verification of the update.

Monitoring plugins - Archive of obsolete content
below are a number of javascript snippets that would be useful to developers trying to use this feature: registration to register for runtime notifications with the observer service you must create a class with an observe method which receives 3 parameters (subject, topic and data) as well as a register method that contains the following code: var observerservice = components.classes["@mozilla.org/observer-service;1"] .getservice (components.interfaces.nsiobserverservice); observerservice.addobserver(this, "experimental-notify-plugin-call", false); observing as discussed above, to specify what you want done when a notification arrives your class must have an observe method, receivin...
...the topic contains the notification's topic - experimental-notify-plugin-call in this case, the data is the runtime in milliseconds and the subject is always null and should not be used.
... clean up to unregister your class with the observer service - when you no longer want to be listening to runtime notifications - your class must include an unregister method that contains the following code: var observerservice = components.classes["@mozilla.org/observer-service;1"] .getservice(components.interfaces.nsiobserverservice); observerservice.removeobserver(this, "experimental-notify-plugin-call"); skeleton observer class below is a skeleton class that you may use to listen to runtime notifications: function pluginobserver() { this...

NPP_SetWindow - Archive of obsolete content
the window structure contains a window handle and values for top left corner, width, height, and clipping rectangle (see note on unix below).
... the data structure passed in npp_setwindow is an npwindow object, which contains the coordinates of the instance's area and various platform-specific data.
... for windowed plug-ins on windows and unix, the window parameter contains a handle to a subwindow of the browser window hierarchy.

NPPrintCallbackStruct - Archive of obsolete content
« gecko plugin api reference « plug-in side plug-in api summary contains information required by the platformprint field of the npembedprint structure during embedded mode printing on unix systems.
...syntax typedef struct { int32 type; file* fp; } npprintcallbackstruct; fields the data structure has the following fields: type always contains np_print.
...the npprintcallbackstruct structure contains the file pointer to which the plug-in should write its postscript data.

NPSavedData - Archive of obsolete content
description the npsaveddata object contains a block of per-instance information that the browser saves after the instance is deleted.
... this information can be returned to another instance of the same plug-in if the user returns to the web page that contains it.
...if the user revisits a web page that contains a plug-in, the browser returns the npsaveddata to the new instance of the plug-in in a call to npp_new().

NPWindow - Archive of obsolete content
« gecko plugin api reference « plug-in side plug-in api summary contains information about the target into which the plug-in instance can draw.
... ws_info unix: contains information about the plug-in's unix window environment; points to an npsetwindowcallbackstruct.
...(the drawable is provided in a graphicsexpose event, when the paint is requested.) description the npwindow structure represents the native window or a drawable, and contains information about coordinate position, size, whether the plug-in is windowed or windowless, and some platform-specific information.

Introduction to SSL - Archive of obsolete content
this document is primarily intended for administrators of red hat server products, but the information it contains may also be useful for developers of applications that support ssl.
... to authenticate the binding between a public key and the server identified by the certificate that contains the public key, an ssl-enabled client must receive a "yes" answer to the four questions shown in figure 2.
... to authenticate the binding between the public key and the person or other entity identified by the certificate that contains the public key, an ssl-enabled server must receive a "yes" answer to the first four questions shown in figure 3.

Table Reflow Internals - Archive of obsolete content
overview review of reflow table frames table reflow intro to paginated reflow table paginated reflow review of reflow reflow process starts when an html document starts loading (the frame tree contains only viewport, scroll(s), canvas, html, body).
...absolutely positioned elements) reflows reflowee and passes a reflow state (in) and a reflow metrics (in/out) review of reflow the reflow state: is a node in a tree structurally equivalent to the frame tree of reflow participants contains: reflow type, avail size, various computed values, resolved style structs possible request for preferred size and more.
... review of reflow the reflow metrics contains: max element size (if requested) - the minimum size it can be preferred size (if requested) - the size it would like to be given no size constraints.

Theme changes in Firefox 2 - Archive of obsolete content
mozapps/extensions/notifybadges.png new file; contains the icons used ito badge the icons for add-ons in the add-on manager window to indicate their status.
... mozapps/extensions/viewbuttons.png new file; contains icons for each of the views that may be available in the add-ons manager.
... in the default theme, these look something like this: the top row contains dimmed versions of the icons below them.

Theme changes in Firefox 4 - Archive of obsolete content
in particular, the new file omni.jar contains most of the resources, including the skin.
... /chrome/browser/skin contains application-specific skin resource files.
... /chrome/toolkit/skin contains toolkit skin files.

XForms Output Element - Archive of obsolete content
image - if the instance node contains an image, then an output element can be used in combination with the mediatype element to display the image (fx 3.0 only, xhtml/xul).
... image if the bound instance node contains an image then you are free to use this representation to show the image instead of the byte sequence of the image data (fx 3.0 only, xhtml/xul).
... characteristics the bound instance node is of type xsd:anyuri, xsd:base64binary or a type derived from it either the mediatype attribute is present and contains the image's mimetype or the output element contains a mediatype element which specifies the image's mimetype (for example, image/*).

XForms Repeat Element - Archive of obsolete content
introduction a repeat element contains markup and is itself bound to a nodeset in an instance document (see the spec).
...to accommodate this, xforms 1.0 defines an alternative syntax that is functionally equivalent to the repeat element, using the following attributes: repeat-model repeat-bind repeat-nodeset repeat-startindex repeat-number additionally, when using xforms action setindex, its repeat attribute (which contains an idref) can point to any element carrying these repeat attributes.
...the id of the element that contains the repeat attributes can be used as the argument to index.

Desktop gamepad controls - Game development
here's the gamepadapi object, which contains useful variables and functions: var gamepadapi = { active: false, controller: {}, connect: function(event) {}, disconnect: function(event) {}, update: function() {}, buttons: { layout: [], cache: [], status: [], pressed: function(button, state) {} } axes: { status: [] } }; the controller variable stores the information ...
... the buttons variable contains the layout of a given controller (for example which buttons are where, because an xbox 360 layout may be different to a generic one), the cache containing the information about the buttons from the previous frame and the status containing the information from the current frame.
...ut the controller is stored in the object: connect: function(event) { gamepadapi.controller = event.gamepad; gamepadapi.active = true; }, the disconnect function removes the information from the object: disconnect: function(event) { delete gamepadapi.controller; gamepadapi.active = false; }, the update() function is executed in the update loop of the game on every frame, so it contains the latest information on the pressed buttons: update: function() { gamepadapi.buttons.cache = []; for(var k=0; k<gamepadapi.buttons.status.length; k++) { gamepadapi.buttons.cache[k] = gamepadapi.buttons.status[k]; } gamepadapi.buttons.status = []; var c = gamepadapi.controller || {}; var pressed = []; if(c.buttons) { for(var b=0,t=c.buttons.length; b<t; b++) { if(c.b...

Accessibility tree (AOM) - MDN Web Docs Glossary: Definitions of Web-related terms
the accessibility tree, or accessibility object model (aom), contains accessibility-related information for most html elements.
...the dom tree contains objects for all the markup’s elements, attributes, and text nodes.
... additionally, the accessibility tree often contains information on what can be done with an element: a link can be followed, a text input can be typed into, etc.

Images, media, and form elements - Learn web development
in the example below we have two boxes, both 200 pixels in size: one contains an image which is smaller than 200 pixels — it is smaller than the box and doesn't stretch to fill it.
... form elements form elements can be a tricky issue when it comes to styling with css, and the web forms module contains detailed guides to the trickier aspects of styling form elements, which i will not fully reproduce here.
... html5 also contains attributes that enable web developers to indicate which fields are required, and even the type of content that needs to be entered.

Attribute selectors - Learn web development
[attr~=value] p[class~="special"] matches elements with an attr attribute whose value is exactly value, or contains value in its (space separated) list of values.
... li[class~="a"] will match a class of a but also a value that contains the class of a as part of a whitespace-separated list.
... [attr*=value] li[class*="box"] matches elements with an attr attribute whose value contains value anywhere within the string.

Client-side form validation - Learn web development
if the field contains a value outside this range, it will be invalid.
... validity: returns a validitystate object that contains several properties describing the validity state of the element.
... emailerror.textcontent = `email should be at least ${ email.minlength } characters; you entered ${ email.value.length }.`; } // set the styling appropriately emailerror.classname = 'error active'; } the comments explain things pretty well, but briefly: every time we change the value of the input, we check to see if it contains valid data.

How to build custom form controls - Learn web development
--> <ul class="optlist"> <!-- each option only contains the value to be displayed, we'll see later how to handle the real value that will be sent with the form data --> <li class="option">cherry</li> <li class="option">lemon</li> <li class="option">banana</li> <li class="option">strawberry</li> <li class="option">apple</li> </ul> </div> note the use of class names; these identify each relevant part regardless of the ac...
... // this function will be used each time we want to deactivate a custom control // it takes one parameter // select : the dom node with the `select` class to deactivate function deactivateselect(select) { // if the control is not active there is nothing to do if (!select.classlist.contains('active')) return; // we need to get the list of options for the custom control var optlist = select.queryselector('.optlist'); // we close the list of option optlist.classlist.add('hidden'); // and we deactivate the custom control itself select.classlist.remove('active'); } // this function will be used each time the user wants to (de)activate the control // it takes two paramete...
...rs: // select : the dom node with the `select` class to activate // selectlist : the list of all the dom nodes with the `select` class function activeselect(select, selectlist) { // if the control is already active there is nothing to do if (select.classlist.contains('active')) return; // we have to turn off the active state on all custom controls // because the deactivateselect function fulfills all the requirements of the // foreach callback function, we use it directly without using an intermediate // anonymous function.

What’s in the head? Metadata in HTML - Learn web development
it contains information such as the page <title>, links to css (if you choose to style your html content with css), links to custom favicons, and other metadata (data about the html, such as the author, and important keywords that describe the document.) in this article we'll cover all of the above and more, in order to give you a good basis for working with markup.
...this is the code we used: <p>japanese example: ご飯が熱い。</p> adding an author and description many <meta> elements include name and content attributes: name specifies the type of meta element it is; what type of information it contains.
...this takes two attributes, rel="stylesheet", which indicates that it is the document's stylesheet, and href, which contains the path to the stylesheet file: <link rel="stylesheet" href="my-css-file.css"> the <script> element should also go into the head, and should include a src attribute containing the path to the javascript you want to load, and defer, which basically instructs the browser to load the javascript at the same time as the page's html.

Adding vector graphics to the Web - Learn web development
on the web, you'll work with two types of image — raster images, and vector images: raster images are defined using a grid of pixels — a raster image file contains information showing exactly where each pixel is to be placed, and exactly what color it should be.
... popular web raster formats include bitmap (.bmp), png (.png), jpeg (.jpg), and gif (.gif.) vector images are defined using algorithms — a vector image file contains shape and path definitions that the computer can use to work out what the image should look like when rendered on the screen.
... the difference becomes apparent when you zoom in the page — the png image becomes pixellated as you zoom in because it contains information on where each pixel should be (and what color).

Cooperative asynchronous JavaScript: Timeouts and intervals - Learn web development
this contains the finished html structure and css styling, giving us a game board that shows the two players' information (as seen above), but with the spinner and results paragraph displayed on top of one another.
... a reference to the <div> element that contains the spinner, used for showing and hiding it.
... inside keyhandler(), the code includes the event object as a parameter (represented by e) — its key property contains the key that was just pressed, and you can use this to respond to specific key presses with specific actions.

Third-party APIs - Learn web development
the icon is defined using an mapquest.icons.marker() method, which as you can see contains information such as color and size of marker.
...initially the <script> element contains a number of variables needed for the setup of the example; below we'll fill in the required functionality.
... the first if() block checks to see if 10 articles are returned (the api returns up to 10 articles at a time.) if so, we display the <nav> that contains the previous 10/next 10 pagination buttons.

Basic math in JavaScript — numbers and operators - Learn web development
we have already used the most basic one, =, loads of times — it simply assigns the variable on the left the value stated on the right: let x = 3; // x contains the value 3 let y = 4; // y contains the value 4 x = y; // x now contains the same value y contains, 4 but there are some more complex types, which provide useful shortcuts to keep your code neater and more efficient.
... note that you can quite happily use other variables on the right hand side of each expression, for example: let x = 3; // x contains the value 3 let y = 4; // y contains the value 4 x *= y; // x now contains the value 12 note: there are lots of other assignment operators available, but these are the basic ones you should learn now.
...in this case, we are not testing if two mathematical expressions have the same value — we are testing whether the text content of a button contains a certain string — but it is still the same principle at work.

Object prototypes - Learn web development
most modern browsers, however, do offer property available called __proto__ (that's 2 underscores either side), which contains the object's constructor's prototype object.
... for example, try these commands in the console: person1.constructor person2.constructor these should both return the person() constructor, as it contains the original definition of these instances.
...this makes the code easier to read, as the constructor only contains the property definitions, and the methods are split off into separate blocks.

Getting started with React - Learn web development
the public directory contains files that will be read by your browser while you're developing the app; the most important of these is index.html.
... the package.json file contains information about our project that node.js/npm uses to keep it organized.
...this file contains our first component, app, and a few other lines of code: import react from 'react'; import logo from './logo.svg'; import './app.css'; function app() { return ( <div classname="app"> <header classname="app-header"> <img src={logo} classname="app-logo" alt="logo" /> <p> edit <code>src/app.js</code> and save to reload.

Deploying our app - Learn web development
the newly-created production code is placed in a new directory called dist, which contains all the files required to run the website, ready for you to upload to a server.
... you should enter the command npm run build for the build command, and specify the dist directory for the publish directory — this contains the code that we want to make public.
... find your scripts member, and update it so that it contains the following test and build commands: "scripts": { … "test": "node tests/*.js", "build": "npm run test && parcel build src/index.html" } now of course we need to add the test to our codebase; create a new directory in your root directory called tests: mkdir tests inside the new directory, create a test file: cd tests touch nasa-feed.test.js open this file, an...

Multiple Firefox profiles
the beta channel contains the features that are expected to be in the next release of firefox and are in final stages of testing.
... aurora contains experimental features, which are not yet at beta quality.
... nightly contains the latest code from firefox developers and is the least stable channel.

Message manager overview
its most important functions and attributes are: childcount : contains the number of children (typically, browser windows) getchildat() : get the child at the given index loadframescript() : load a frame script into every tab in the browser broadcastasyncmessage() : send a message to frame scripts addmessagelistener() : start listening to a specific message from all frame scripts removemessagelistener() : stop listening to a specific message...
... its most important functions and attributes are: childcount : contains the number of children (typically, browser tabs) getchildat() : get the child at the given index loadframescript() : load a frame script into every tab in this window broadcastasyncmessage() : send a message to all frame scripts in this window addmessagelistener() : start listening to a specific message from frame scripts removemessagelistener() : stop listening to a spec...
... its most important functions and attributes are: childcount : contains the number of children (child processes, plus the in-content child) getchildat() : get the child at the given index loadprocessscript() : load a process script into every content process broadcastasyncmessage() : send a message to all process scripts addmessagelistener() : start listening to a specific message from process scripts removemessagelistener() : stop listening ...

Gecko SDK
furthermore, since a component contains basic functionality, it is intended to run with every product of the mozilla platform.
... the gecko sdk contains all of the necessary tools and headers for making scriptable npapi plugins including the xpidl compiler/linker and the latest npapi.h.
... contents of the sdk the sdk contains the following: 1.9.2 idl files for frozen interfaces (under idl/) header files for frozen interfaces, xpcom functions, and nspr functions (under include/) import libraries or shared libraries (under lib/) static utility libraries (under lib/) various tools (under bin/) for more information about safely linking xpcom components using the xpcom "glue" library, see xpcom glue.

Script security
expanded principal an expanded principal is specified as an array of origins: ["http://mozilla.org", "http://moz.org"] the expanded principal subsumes every content principal it contains.
... the content principals do not subsume the expanded principal, even if the expanded principal only contains a single content principal.
...the expanded principal gets full access to the content principals it contains, with xray vision by default, and the content principals get no access to the expanded principal.

Internationalized Domain Names (IDN) Support in Mozilla Browsers
if end users input non-ascii characters as part of a domain name or if a web page contains a link using a non-ascii domain name, the application must convert such input into a special encoded format using only the usual ascii subset characters.
...since the punycode contains only ascii characters, it is possible that an output may, though unlikely, coincide with existing domain names.
...since the unicode repertoire contains characters no longer used in any living languages and there are also living characters in most languages that are not suitable for uri/url creation, the icann guideline allows the governing body of each country's domain registrars to set appropriate limitations on the use of characters.

Localizing with Mercurial
mozilla-central contains the files for firefox nightly.
... comm-central contains the files for seamonkey and thunderbird which are not already part of firefox.
... l10n-central contains all of the l10n repos for firefox nightly.

Fonts for Mozilla 2.0's MathML engine
recommended fonts the stix fonts project has been developing a comprehensive set of fonts that cover all the symbols in mathml and also contains glyphs to stretch mathematical operators.
...the font only contains glyphs for stretchy operators that have unicode assignments.
...the font contains the necessary glyphs for stretchy operators but mozilla does not yet make use of all of these.

MathML Demo: <mo> - operator, fence, separator, or accent
binary operators and relations the following table contains instances of all operators found on the swp binary operations and binary relations panels.
... a ⊎ b ⋖ c a ⌆ b ⋗ c a ⨿ b ∣ c a ⊴ b ∥ c a ⊵ b ∼ c a ▽ b ≈ c a △ b ≊ c a ⋄ b ⪸ c a † b ⪷ c a ‡ b ∋ c a ⊞ b \vartriangle c arrows the following table contains instances of all arrows found on the swp arrows panel.
...- b ↫ c a + b ↬ c a - b ⊸ c a + b ⇛ c a - b ⇚ c a + b ↶ c a - b ↷ c a + b ⤏ c a - b ⤎ c a + b ⇒ c a - b ⇐ c a + b ⇔ c negated relations the following table contains instances of all negated relations found on the swp panel.

BloatView
this log contains data on leaks and bloat (a.k.a.
... reading individual bloat logs full bloatview output contains per-class statistics on allocations and refcounts, and provides gross numbers on the amount of memory being leaked broken down by class.
...logn > htmlfile this will produce an html file that contains a table similar to the following (but with added javascript so you can sort the data by column).

A guide to searching crash reports
the first link in each "signature" column cell links to a signature report, which contains additional details about crash reports with that signature.
... you can do things like: search for crashes where the signature is foo, and the proto signature contains bar.
...by default, it contains the value "signature", which explains why we saw a "signature facet" tab in the earlier search results.

NSS tools : crlutil
-i crl-import-file specify the file which contains the crl to import -f password-file specify a file that will automatically supply the password to include in a certificate or to access a certificate database.
...bracket the nickname string with quotation marks if it contains spaces.
...bracket the output-file string with quotation marks if it contains spaces.

sslerr.html
sec_error_unknown_critical_extension -8151 certificate contains unknown critical extension.
...r before performing this operation." sec_error_ocsp_malformed_response -8063 "the response from the ocsp server was corrupted or improperly formed." sec_error_ocsp_unauthorized_response -8062 "the signer of the ocsp response is not authorized to give status for this certificate." sec_error_ocsp_future_response -8061 "the ocsp response is not yet valid (contains a date in the future)." sec_error_ocsp_old_response -8060 "the ocsp response contains out-of-date information." sec_error_digest_not_found -8059 "the cms or pkcs #7 digest was not found in signed message." sec_error_unsupported_message_type -8058 "the cms or pkcs #7 message type is unsupported." sec_error_module_stuck -8057 "pkcs #11 mod...
...gged in." sec_error_ocsp_responder_cert_invalid -8036 "the configured ocsp responder's certificate is invalid." sec_error_ocsp_bad_signature -8035 "ocsp response has an invalid signature." sec_error_out_of_search_limits -8034 "certification validation search is out of search limits." sec_error_invalid_policy_mapping -8033 "policy mapping contains any-policy." sec_error_policy_validation_failed -8032 "certificate chain fails policy validation." sec_error_unknown_aia_location_type -8031 "unknown location type in certificate aia extension." sec_error_bad_http_response -8030 "server returned a bad http response." sec_error_bad_ldap_response -8029 "server returned a bad ldap response.

NSS Tools crlutil
-i crl-import-file specify the file which contains the crl to import -f password-file specify a file that will automatically supply the password to include in a certificate or to access a certificate database.
...bracket the nickname string with quotation marks if it contains spaces.
...bracket the output-file string with quotation marks if it contains spaces.

NSS tools : crlutil
-i crl-import-file specify the file which contains the crl to import -f password-file specify a file that will automatically supply the password to include in a certificate or to access a certificate database.
...bracket the nickname string with quotation marks if it contains spaces.
...bracket the output-file string with quotation marks if it contains spaces.

NSS tools : signtool
signdir you may have trouble if the nickname contains a single quotation mark.
...the metadata file contains one entry per line, each with three fields: field #1: file specification, or + if you want to specify global metadata (that is, metadata about the jar archive itself or all entries in the archive) field #2: the name of the data you are specifying; for example: install-script field #3: data corresponding to the name in field #2 for example, th...
... -v archive displays the contents of an archive and verifies the cryptographic integrity of the digital signatures it contains and the files with which they are associated.

Rhino overview
rhino contains all the features of javascript 1.7 allows direct scripting of java a javascript shell for executing javascript scripts a javascript compiler to transform javascript source files into java class files a javascript debugger for scripts executed with rhino language the javascript language itself is standardized by standard ecma-262 ecmascript: a general purpose, cross-platform programming language.
...javascript: the definitive guide is recommended, and contains a chapter on rhino.
...in a typical client embedding, this object might be a string with the url of the server that supplied the script, or an object that contains a representation of the signers of a piece of code for certificate-based security policies.

Tracing JIT
the nanojit component is language agnostic, and contains no knowledge about spidermonkey or any other part of the mozilla codebase.
...therefore an assembler contains several machine-specific methods which are implemented in the accompanying nanojit/native*.* files.
... if the recorder is asked to record a bytecode that implies a call to a native function elsewhere in spidermonkey -- some helper function written in c -- and that native happens to re-enter the interpreter to interpret yet more bytecode, and furthermore if that bytecode itself contains a hot pc that has not yet been traced, the trace monitor may be asked to begin nested recording.

TPS Tests
a phase runs in some firefox profile, and contains some set of actions to perform or check on that profile.
...each phase block contains the name of a phase, and a list of actions.
...the sync_wipe_server argument causes tps to set the firstsync="wipeserver" pref before syncing, in case the sync account already contains data (this is typically unnecessary, and done largely as an example).

Feed content access API
contains the person's name, email address, and their home page address.
... doc.write("</body></html>"); doc.close(); } } the handleresult() function receives as its argument an nsifeedresult that describes a feed; its doc property is an nsifeed that contains all the feed data.
...this array contains nsifeedentry objects that describe each feed item.

Setting up the Gecko SDK
each module directory is divided into three subdirectories: module subdirectories the bin directory contains static libraries, dynamic libraries, and in some cases tools that may be useful in development.
... the idl directory contains the public idl files exported by the module.
... the includes directory contains c++ header files used by your component.

Starting WebLock
each category contains a set of name-value pairs.
... the xpcom api reference contains detailed information on nsifile and other xpcom interfaces.
...in the example below, appdir will point to the directory that contains the executable.

Introduction to XPCOM for the DOM
an_iid \ {0xxxxxxxxx, 0xxxxx, 0xxxxx, \ { 0xxx, 0xxx, 0xxx, 0xxx, 0xxx, 0xxx, 0xxx, 0xxx }} class nsidomfabian : public nsisupports { public: ns_imethod fabian(void) = 0; ns_imethod getneat(prbool *aneat) = 0; }; #define ns_decl_nsidomfabian #define ns_forward_nsidomfabian(_to) #define ns_forward_safe_nsidomfabian(_to) as we can see, the auto-generated header file contains the iid of our interface, and a "pure abstract class" is correctly defined.
...we also saw that an interface defined in xpidl contains methods and attributes, which are transformed into c++ functions by the xpidl compiler.
...if we look at nsidomhtmlanchorelement (which contains the methods and properties defined by the w3c for this element), we can see that it inherits from another interface, nsidomhtmlelement: interface nsidomhtmlanchorelement : nsidomhtmlelement this means that whatever class implements the nsidomhtmlanchorelement interface will also have to implement the nsidomhtmlelement interface.

NS_ConvertASCIItoUTF16
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset print32 findcharinset(const prunichar*, print32) const - source parameters prunichar* as...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters prunichar* astring print32 aoffset print32 rfindcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset equalsignorecase prbool equalsignorecase(const char*, print32) const - source parameters char* astring print32 acount tofloat float tofloat(print32*) const - source perform string to float conversion.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

NS_ConvertUTF16toUTF8
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset rfindcharinset print32 rfindcharinset(const char*, print32) const - source this met...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 rfindcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset compare print32 compare(const char*, prbool, print32) const - source compares a given string to this string.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

NS_ConvertUTF8toUTF16
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset print32 findcharinset(const prunichar*, print32) const - source parameters prunichar* as...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters prunichar* astring print32 aoffset print32 rfindcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset equalsignorecase prbool equalsignorecase(const char*, print32) const - source parameters char* astring print32 acount tofloat float tofloat(print32*) const - source perform string to float conversion.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

NS_LossyConvertUTF16toASCII
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset rfindcharinset print32 rfindcharinset(const char*, print32) const - source this met...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 rfindcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset compare print32 compare(const char*, prbool, print32) const - source compares a given string to this string.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

nsAdoptingCString
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset rfindcharinset print32 rfindcharinset(const char*, print32) const - source this met...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 rfindcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset compare print32 compare(const char*, prbool, print32) const - source compares a given string to this string.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

nsAdoptingString
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset print32 findcharinset(const prunichar*, print32) const - source parameters prunichar* as...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters prunichar* astring print32 aoffset print32 rfindcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset equalsignorecase prbool equalsignorecase(const char*, print32) const - source parameters char* astring print32 acount tofloat float tofloat(print32*) const - source perform string to float conversion.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

nsCString
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset rfindcharinset print32 rfindcharinset(const char*, print32) const - source this met...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 rfindcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset compare print32 compare(const char*, prbool, print32) const - source compares a given string to this string.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

nsDependentCString
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset rfindcharinset print32 rfindcharinset(const char*, print32) const - source this met...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 rfindcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset compare print32 compare(const char*, prbool, print32) const - source compares a given string to this string.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

nsDependentString
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset print32 findcharinset(const prunichar*, print32) const - source parameters prunichar* as...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters prunichar* astring print32 aoffset print32 rfindcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset equalsignorecase prbool equalsignorecase(const char*, print32) const - source parameters char* astring print32 acount tofloat float tofloat(print32*) const - source perform string to float conversion.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

nsFixedCString
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset rfindcharinset print32 rfindcharinset(const char*, print32) const - source this met...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 rfindcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset compare print32 compare(const char*, prbool, print32) const - source compares a given string to this string.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

nsFixedString
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset print32 findcharinset(const prunichar*, print32) const - source parameters prunichar* as...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters prunichar* astring print32 aoffset print32 rfindcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset equalsignorecase prbool equalsignorecase(const char*, print32) const - source parameters char* astring print32 acount tofloat float tofloat(print32*) const - source perform string to float conversion.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

nsPromiseFlatCString
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset rfindcharinset print32 rfindcharinset(const char*, print32) const - source this met...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 rfindcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset compare print32 compare(const char*, prbool, print32) const - source compares a given string to this string.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

nsPromiseFlatString
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset print32 findcharinset(const prunichar*, print32) const - source parameters prunichar* as...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters prunichar* astring print32 aoffset print32 rfindcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset equalsignorecase prbool equalsignorecase(const char*, print32) const - source parameters char* astring print32 acount tofloat float tofloat(print32*) const - source perform string to float conversion.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

nsString
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset print32 findcharinset(const prunichar*, print32) const - source parameters prunichar* as...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters prunichar* astring print32 aoffset print32 rfindcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset equalsignorecase prbool equalsignorecase(const char*, print32) const - source parameters char* astring print32 acount tofloat float tofloat(print32*) const - source perform string to float conversion.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

nsXPIDLCString
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset rfindcharinset print32 rfindcharinset(const char*, print32) const - source this met...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 rfindcharinset(const nscstring&, print32) const - source parameters nscstring& astring print32 aoffset compare print32 compare(const char*, prbool, print32) const - source compares a given string to this string.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

nsXPIDLString
@param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters char* astring print32 aoffset print32 findcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset print32 findcharinset(const prunichar*, print32) const - source parameters prunichar* as...
... @param astring contains set of chars to be found @param aoffset tells us where in this string to start searching (counting from left) @return offset in string, or knotfound parameters prunichar* astring print32 aoffset print32 rfindcharinset(const nsstring&, print32) const - source parameters nsstring& astring print32 aoffset equalsignorecase prbool equalsignorecase(const char*, print32) const - source parameters char* astring print32 acount tofloat float tofloat(print32*) const - source perform string to float conversion.
... @param aset -- contains chars to be trimmed from both ends @param aeliminateleading @param aeliminatetrailing @param aignorequotes -- if true, causes surrounding quotes to be ignored @return this parameters char* aset prbool aeliminateleading prbool aeliminatetrailing prbool aignorequotes compresswhitespace void compresswhitespace(prbool, prbool) - source this method strips whitespace from string.

mozIStorageService
if your database contains virtual tables (for example, for full-text indexes), you must use mozistorageservice.openunshareddatabase() to open it, since those tables are not compatible with a shared cache.
... ns_error_file_corrupted the database file is corrupted, or contains virtual tables and is not compatible with this method.
... ns_error_file_corrupted the database file is corrupted, or contains virtual tables and is not compatible with this method.

nsICryptoHash
you can, for example, calculate the sha256 hash of a file to determine if it contains the data you think it does.
...var s = array.from(hash, (c, i) => tohexstring(hash.charcodeat(i))).join(""); // s now contains your hash in hex this gives 5eb63bbbe01eeed093cb22bb8f5acdc3 for the hash value.
...var s = array.from(hash, (c, i) => tohexstring(hash.charcodeat(i))).join(""); // s now contains your hash in hex: should be // 5eb63bbbe01eeed093cb22bb8f5acdc3 see also firefox 1.5 ...

nsIIOService
in that case the principal of the stylesheet which contains the import command is the triggeringprincipal, and the principal of the document whose rendering is affected is the loadingprincipal.
...in that case the principal of the stylesheet which contains the import command is the triggeringprincipal, and the principal of the document whose rendering is affected is the loadingprincipal.
...in that case the principal of the stylesheet which contains the import command is the triggeringprincipal, and the principal of the document whose rendering is affected is the loadingprincipal.

nsIMsgDatabase
me, in boolean acreate, in boolean aleaveinvaliddb); void forcefolderdbclosed(in nsimsgfolder afolder); void close(in boolean aforcecommit); void commit(in nsmsgdbcommit committype); void forceclosed(); void clearcachedhdrs; void resethdrcachesize(in unsigned long size); nsimsgdbhdr getmsghdrforkey(in nsmsgkey key); nsimsgdbhdr getmsghdrformessageid(in string messageid); boolean containskey(in nsmsgkey key); nsimsgdbhdr createnewhdr(in nsmsgkey key); void addnewhdrtodb(in nsimsgdbhdr newhdr, in boolean notify); nsimsgdbhdr copyhdrfromexistinghdr(in nsmsgkey key, in nsimsgdbhdr existinghdr, in boolean addhdrtodb); void listallkeys(in nsmsgkeyarrayref outputkeys); native code only!
... void forceclosed(); clearcachedhdrs() void clearcachedhdrs(); resethdrcachesize() void resethdrcachesize(in unsigned long size); getmsghdrforkey() nsimsgdbhdr getmsghdrforkey(in nsmsgkey key); parameters key getmsghdrformessageid() nsimsgdbhdr getmsghdrformessageid(in string messageid); parameters messageid containskey() returns whether or not this database contains the given key.
... boolean containskey(in nsmsgkey key); parameters key createnewhdr() must call addnewhdrtodb after creating.

nsIMsgFolder
sortkeys(in nsimsgfolder msgfolder); [noscript] void getsortkey(out octet_ptr key, out unsigned long length); boolean callfilterplugins(in nsimsgwindow amsgwindow); acstring getstringproperty(in string propertyname); void setstringproperty(in string propertyname, in acstring propertyvalue); boolean isancestorof(in nsimsgfolder folder); boolean containschildnamed(in astring name); nsimsgfolder getchildnamed(in astring aname); nsimsgfolder findsubfolder(in acstring escapedsubfoldername); void addfolderlistener(in nsifolderlistener listener); void removefolderlistener(in nsifolderlistener listener); void notifypropertychanged(in nsiatom property, in acstring oldvalue, in acstring newvalue); voi...
... boolean isancestorof(in nsimsgfolder folder); containschildnamed() looks in immediate children of this folder for the given name.
... boolean containschildnamed(in astring name); getchildnamed() return the child folder which the specified name.

XPIDL
this infallible getter contains code that calls the fallible getter, asserts success, and returns the gotten value directly.
... out and inout parameters are reflected as objects having the .value property which contains the real value of the parameter; it is not initialized in the case of out parameters and is initialized to the passed-in-value for inout parameters.
...naturally, a method which contains a retval parameter must be declared void, and the parameter itself must be an out parameter and the last parameter.

Building a Thunderbird extension 1: introduction
the tutorial has the following pages: introduction (this page) the extension filesystem (setting up your local system) install manifest (the install.rdf file that contains meta-information about the extension) chrome manifest (list of packages and overlays) xul (the xml user interface language that is used to modify the thunderbird user interface) adding javascript (explains how to add some simple javascript to your thunderbird extension) installing locally (enabling the extension on your local thunderbird instance) packaging (making a distribution package tha...
...t contains the extension) distributing (from your own site or from http://addons.mozilla.org/) this tutorial is compatible with thunderbird versions 2,3 and 5.
... documentation thunderbird extensions (documentation overview) firefox addons developer guide (many topics are applicable to thunderbird) mozilla cross-reference source code browser ("comm-central" contains the thunderbird code repository) community the thunderbird development community has a mailing list with an extensive searchable archive with an extensive searchable archive.

PKCS #11 Netscape Trust Objects - Network Security Services
conceptually a trust object contains the following: certificate reference purpose + level of trust (multiple) purpose + level of trust a trust object ultimately denotes a level of trust in a certificate.
...a trust object contains multiple purposes and the level of trust for each one.
... certificate reference each trust object contains a reference to a certificate.

Network request list - Firefox Developer Tools
starting in firefox 45, the timeline also contains two vertical lines: the blue line marks the point at which the page's domcontentloaded event is triggered.
...(click the icon again when you want to close the sidebar.) enter a string in the field with the placeholder text block resource when url contains.
...you can filter by plain text (in which case the text is used to find partial matches; entering "for" will match any message that contains the word "for") or—as of firefox 75—using regular expressions (by writing the regexp bracketed within slashes; "/.+corp.*/" will look for any occurrence of "corp" which has at least one character before it and may or may not have any characters after it, for example).

Pixel manipulation with canvas - Web APIs
it contains the following read-only attributes: width the width of the image in pixels.
... the uint8clampedarray contains height × width × 4 bytes of data, with index values ranging from 0 to (height×width×4)-1.
... note: be aware that if the canvas contains any pixels that were obtained from another origin without using cors, the canvas is tainted and its contents can no longer be read and saved.

DOMException - Web APIs
properties domexception.code read only returns a short that contains one of the error code constants, or 0 if none match.
... domexception.name read only returns a domstring that contains one of the strings associated with an error name.
...(legacy code value: 4 and legacy constant name: wrong_document_err) invalidcharactererror the string contains invalid characters.

DataTransfer - Web APIs
datatransfer.files contains a list of all the local files available on the data transfer.
...if data for the specified type does not exist, or the data transfer contains no data, this method will have no effect.
... datatransfer.getdata() retrieves the data for a given type, or an empty string if data for that type does not exist or the data transfer contains no data.

Element.classList - Web APIs
use the classlist api to remove and add classes div.classlist.remove("foo"); div.classlist.add("anotherclass"); // <div class="anotherclass"></div> console.log(div.outerhtml); // if visible is set remove it, otherwise add it div.classlist.toggle("visible"); // add/remove visible, depending on test conditional, i less than 10 div.classlist.toggle("visible", i < 10 ); console.log(div.classlist.contains("foo")); // add or remove multiple classes div.classlist.add("foo", "bar", "baz"); div.classlist.remove("foo", "bar", "baz"); // add or remove multiple classes using spread syntax const cls = ["foo", "bar"]; div.classlist.add(...cls); div.classlist.remove(...cls); // replace class "foo" with class "bar" div.classlist.replace("foo", "bar"); versions of firefox before 26 do not implement the u...
...ototype = new error; var wsre = /[\11\12\14\15\40]/, wsindex = 0, checkifvalidclasslistentry = function(o, v) { if (v === "") throw new domexception( "failed to execute '" + o + "' on 'domtokenlist': the token provided must not be empty." ); if((wsindex=v.search(wsre))!==-1) throw new domexception("failed to execute '"+o+"' on 'domtokenlist': " + "the token provided ('"+v[wsindex]+"') contains html space characters, which are not valid in tokens."); } // 2.
...peof testclass.replace("a", "b") !== "boolean") domtokenlistproto.replace = function(oldtoken, newtoken){ checkifvalidclasslistentry("replace", oldtoken), checkifvalidclasslistentry("replace", newtoken); var oldvalue = this.value; return (this.remove(oldtoken), this.value !== oldvalue && (this.add(newtoken), true)); }; if (!domtokenlistproto.contains) domtokenlistproto.contains = function(value){ for (var i=0,len=this.length; i !== len; ++i) if (this[i] === value) return true; return false; }; if (!domtokenlistproto.foreach) domtokenlistproto.foreach = function(f){ if (arguments.length === 1) for (var i = 0, len = this.length; i !== len; ++i) f( this[i], i, this); else for (var i=0,len=this.length,targ=...

HTMLCanvasElement.getContext() - Web APIs
contextattributes you can use several context attributes when creating your rendering context, for example: const gl = canvas.getcontext('webgl', { antialias: false, depth: false }); 2d context attributes: alpha: boolean that indicates if the canvas contains an alpha channel.
... webgl context attributes: alpha: boolean that indicates if the canvas contains an alpha buffer.
... premultipliedalpha: boolean that indicates that the page compositor will assume the drawing buffer contains colors with pre-multiplied alpha.

HTMLImageElement - Web APIs
this is different from a client-side image map, specified using an <img> element and a corresponding <map> which contains <area> elements indicating the clickable areas in the image.
... htmlimageelement.src a usvstring that reflects the src html attribute, which contains the full url of the image including base uri.
...the <map> in turn contains <area> elements indicating the clickable areas in the image.

Recommended Drag Types - Web APIs
for example, this sample text/uri-list data contains two links and a comment: http://www.mozilla.org #a second link http://www.example.com when retrieving a dropped link, ensure you handle when multiple links are dragged, including any comments.
... the following example shows how to create an area for receiving dropped files: <listbox ondragenter="return checkdrag(event)" ondragover="return checkdrag(event)" ondrop="dodrop(event)"/> <script> function checkdrag(event) { return event.datatransfer.types.contains("application/x-moz-file"); } function dodrop(event) { var file = event.datatransfer.mozgetdataat("application/x-moz-file", 0); if (file instanceof components.interfaces.nsifile) { event.currenttarget.appenditem(file.leafname); } } </script> in this example, the event returns false only if the data transfer contains the application/x-moz-file type.
... as a result, the contains method no longer works; the includes method should be used instead to check if a specific type of data is provided, using code like the following: if ([...event.datatransfer.types].includes('text/html')) { // do something } you could use feature detection to determine which method is supported on types, then run code as appropriate.

IDBDatabase - Web APIs
" y="1" width="110" height="50" fill="#f4f7f8" stroke="#d4dde4" stroke-width="2px" /><text x="206" y="30" font-size="12px" font-family="consolas,monaco,andale mono,monospace" fill="#4d4e53" text-anchor="middle" alignment-baseline="middle">idbdatabase</text></a></svg></div> a:hover text { fill: #0095dd; pointer-events: all;} properties idbdatabase.name read only a domstring that contains the name of the connected database.
... idbdatabase.version read only a 64-bit integer that contains the version of the connected database.
... idbdatabase.objectstorenames read only a domstringlist that contains a list of the names of the object stores currently in the connected database.

Keyboard API - Web APIs
keyboard api concepts and usage keyboard mapping on physical keyboards, the code attribute contains the physical location of the key that was pressed, and the key attribute contains the string generated by pressing the key at that physical location on the keyboard.
...keyboard provides the keyboard.getlayoutmap method, which returns a promise that resolves with a keyboardlayoutmap object that contains members for converting codes to keys.
... to capture the "w", "a", "s", and "d" keys, call lock() with a list that contains the key code attribute value for each of these keys: navigator.keyboard.lock(["keyw", "keya", "keys", "keyd"]); this captures these keys regardless of which modifiers are used with the key press.

Node - Web APIs
node.contains() returns a boolean value indicating whether or not a node is a descendant of the calling node.
... if callback is omitted, the function returns an array instead, which contains rootnode and all nodes contained within.
...this can be used to abort loops once a node has been found (such as searching for a text node which contains a certain string).

OffscreenCanvas.getContext() - Web APIs
contextattributes you can use several context attributes when creating your rendering context, for example: offscreen.getcontext("webgl", { antialias: false, depth: false }); 2d context attributes: alpha: boolean that indicates if the canvas contains an alpha channel.
... webgl context attributes: alpha: boolean that indicates if the canvas contains an alpha buffer.
... premultipliedalpha: boolean that indicates that the page compositor will assume the drawing buffer contains colors with pre-multiplied alpha.

Pointer events - Web APIs
additionally, a pointer event contains the usual properties present in mouse events (client coordinates, target element, button states, etc.) in addition to new properties for other forms of input: pressure, contact geometry, tilt, etc.
... examples this section contains examples of basic usage of using the pointer events interfaces.
...this section contains information about pointer event and mouse event interaction and the ramifications for application developers.

RTCPeerConnection.createAnswer() - Web APIs
the answer contains information about any media already attached to the session, codecs and options supported by the browser, and any ice candidates already gathered.
... syntax apromise = rtcpeerconnection.createanswer([options]); rtcpeerconnection.createanswer(successcallback, failurecallback[, options]); parameters options optional an object which contains options which customize the answer; this is based on the rtcansweroptions dictionary.
... return value a promise whose fulfillment handler is called with an object conforming to the rtcsessiondescriptioninit dictionary which contains the sdp answer to be delivered to the other peer.

SVGAnimatedString.animVal - Web APIs
animval attribute or animval property contains the same value as the baseval property.if the given attribute or property is being animated, contains the current animated value of the attribute or property.
... if the given attribute or property is not currently being animated, then it contains the same value as baseval the animval property is a read only property.
...as a result, the animval property contains the same value as the baseval property.

ServiceWorkerGlobalScope - Web APIs
idth="240" height="50" fill="#f4f7f8" stroke="#d4dde4" stroke-width="2px" /><text x="481" y="30" font-size="12px" font-family="consolas,monaco,andale mono,monospace" fill="#4d4e53" text-anchor="middle" alignment-baseline="middle">serviceworkerglobalscope</text></a></svg></div> a:hover text { fill: #0095dd; pointer-events: all;} properties serviceworkerglobalscope.clients read only contains the clients object associated with the service worker.
... serviceworkerglobalscope.registration read only contains the serviceworkerregistration object that represents the service worker's registration.
... serviceworkerglobalscope.caches read only contains the cachestorage object associated with the service worker.

SpeechRecognitionEvent - Web APIs
the speechrecognitionevent interface of the web speech api represents the event object for the result and nomatch events, and contains all the data associated with an interim or final speech recognition result.
... recognition.onresult = function(event) { // the speechrecognitionevent results property returns a speechrecognitionresultlist object // the speechrecognitionresultlist object contains speechrecognitionresult objects.
... // each speechrecognitionresult object contains speechrecognitionalternative objects that contain individual results.

Text - Web APIs
if an element has no markup within its content, it has a single child implementing text that contains the element's text.
... however, if the element contains markup, it is parsed into information items and text nodes that form its children.
... text.iselementcontentwhitespace read only returns a boolean flag indicating whether or not the text node contains only whitespace.

Signaling and video calling - Web APIs
ent.queryselector(".userlistbox"); while (listelem.firstchild) { listelem.removechild(listelem.firstchild); } msg.users.foreach(function(username) { var item = document.createelement("li"); item.appendchild(document.createtextnode(username)); item.addeventlistener("click", invite, false); listelem.appendchild(item); }); } after getting a reference to the <ul> which contains the list of user names into the variable listelem, we empty the list by removing each of its child elements.
... finally, we append the new item to the <ul> that contains all of the user names.
... each object in iceservers contains at least a urls field providing urls at which the specified server can be reached.

Web Video Text Tracks Format (WebVTT) - Web APIs
a webvtt file (.vtt) contains cues, which can be either a single line or multiple lines, as shown below: webvtt 00:01.000 --> 00:04.000 - never drink liquid nitrogen.
... each cue timing contains five components: timestamp for start time.
...in normal usage the payload contains the subtitles to be displayed.

Viewpoints and viewers: Simulating cameras in WebXR - Web APIs
a2a6a10a14a3a7a11a15a4a8a12a16]\left [ \begin{matrix} a_{1} & a_{5} & a_{9} & a_{13} \\ a_{2} & a_{6} & a_{10} & a_{14} \\ a_{3} & a_{7} & a_{11} & a_{15} \\ a_{4} & a_{8} & a_{12} & a_{16} \end{matrix} \right ] is represented in array form like this: let matrixarray = [a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16]; in this array, the leftmost column contains the entries a1, a2, a3, and a4.
... the topmost row contains the entries a1, a5, a9, and a13.
...in this case, we're passing in the webgl context, gl, the xrview view, a scenedata object (which contains things like the vertex and fragment shaders, vertex lists, textures, and so forth), and deltatime, which indicates how much time has passed since the previous frame, so that we know how far to advance the animation.

XSLT Basic Example - Web APIs
the example will take an xml document that contains information (title, list of authors and body text) about an article and present it in an human readable form.
...the xml document (example.xml) contains the information about the article.
...an xslt stylesheet starts with the xsl:stylesheet element, which contains all the templates used to create the final output.

Generating HTML - Web APIs
the second example will transform the input document (example2.xml), which again contains information about an article, into an html document.
... the <body> element of the article now contains html elements (a <b> and <u> tag, see figure 2).
... the xml document contains both html elements and xml elements, but only one namespace is needed, namely for the xml elements.

ARIA: application role - Accessibility
description the application role indicates to assistive technologies that this part of the web content contains elements that do not conform to any other known html element or wai-aria widget.
... if the web application encompassed by the application role contains parts that should be treated like normal web content, a role of document or article should be used.
... aria-describedby used to indicate the idref of an element that contains additional instructions for navigating or operating this element.

ARIA: feed role - Accessibility
the feed pattern enables reliable assistive technology reading mode interaction by establishing the following interoperability agreement between the web page and assistive technologies: in the context of a feed, the web page code is responsible for: appropriate visual scrolling of the content based on which article contains dom focus.
... loading or removing feed articles based on which article contains dom focus.
... in the context of a feed, assistive technologies with a reading mode are responsible for: indicating which article contains the reading cursor by ensuring the article element or one of its descendants has dom focus.

ARIA: rowgroup role - Accessibility
a rowgroup contains one or more rows of cells, grid cells, column headers, or row headers within a grid, table or treegrid.
...each row, in turn, contains child cells.
...a row contains one or more cells, gridcell, or column headers, and sometimes a row header.

ARIA: textbox role - Accessibility
the value of aria-controls is the id of the element that contains the list of suggested values.
... additionally, either the textbox or a containing element with role combobox has a value for aria-haspopup that matches the role of the element that contains the list of suggested values.
...if it also contains content, this should be announced as with a regular textbox.

WAI-ARIA Roles - Accessibility
a figure is generally considered to be one or more images, code snippets, or other content that puts across information in a different way to a regular flow of text.aria: form rolethe form landmark role can be used to identify a group of elements on a page that provide equivalent functionality to an html form.aria: grid rolethe grid role is for a widget that contains one or more rows of cells.
...a row contains one or more cells, grid cells or column headers, and possibly a row header, within a grid, table or treegrid, and optionally within a rowgroup.aria: rowgroup rolean element with role="rowgroup" is a group of rows within a tabular structure.
... a rowgroup contains one or more rows of cells, grid cells, column headers, or row headers within a grid, table or treegrid.aria: search rolethe search landmark role is used to identify a section of the page used to search the page, site, or collection of sites.aria: suggestion rolethe suggestion landmark role semantically denotes a single proposed change to an editable document.

Accessibility documentation index - Accessibility
64 aria: grid role aria, html the grid role is for a widget that contains one or more rows of cells.
...a row contains one or more cells, grid cells or column headers, and possibly a row header, within a grid, table or treegrid, and optionally within a rowgroup.
...a rowgroup contains one or more rows of cells, grid cells, column headers, or row headers within a grid, table or treegrid.

Text labels and names - Accessibility
a common navigation technique for users of assistive technology is to infer what content a page contains by reading its title.
...without a title, users of assistive technologies have to navigate into the frame in order to understand what it contains, which can be difficult and confusing.
...without a title, users of assistive technologies have to navigate into the frame in order to understand what it contains, which can be difficult and confusing.

Understandable - Accessibility
your site should provide a glossary that contains definitions of such words/terms that you can then link to when they appear, or at the very least provide definitions somewhere in the surrounding text, or in a description list at the bottom of the page.
... the <abbr> element is often thought of as the preferred way to provide an expansion for an abbreviation — it takes a title attribute that contains the expansion, and this appears when the acronym is moused over.
... globaleventhandlers.onfocus contains some useful information.

Visual formatting model - CSS: Cascading Style Sheets
the principal box when an element generates one or more boxes, one of them is the principal box, which contains its descendant boxes and generated content in the box tree, and is also the box involved in any positioning scheme.
... block containers a block container either contains only inline-level boxes participating in an inline formatting context, or only block-level boxes participating in a block formatting context.
...an element is a block container only if it contains block-level or inline-level boxes.

<img>: The Image Embed element - HTML: Hypertext Markup Language
the above example shows usage of the <img> element: the src attribute is required, and contains the path to the image you want to embed.
...if the srcset attribute is absent, or contains no values with a width descriptor, then the sizes attribute has no effect.
...on browsers supporting srcset, src is treated like a candidate image with a pixel density descriptor 1x, unless an image with this pixel density descriptor is already defined in srcset, or unless srcset contains w descriptors.

<input type="file"> - HTML: Hypertext Markup Language
events change and input supported common attributes required additional attributes accept, capture, files, multiple idl attributes files and value dom interface htmlinputelement properties properties that apply only to elements of type file methods select() value a file input's value attribute contains a domstring that represents the path to the selected file(s).
... each file object contains the following information: name the file's name.
... grab the filelist object that contains the information on all the selected files, and store it in a variable called curfiles.

<input type="number"> - HTML: Hypertext Markup Language
you can set a default value for the input by including a number inside the value attribute, like so: <input id="number" type="number" value="42"> additional attributes in addition to the attributes commonly supported by all <input> types, inputs of type number support these attributes: attribute description list the id of the <datalist> element that contains the optional pre-defined autocomplete options max the maximum value to accept for this input min the minimum value to accept for this input placeholder an example value to display inside the field when it's empty readonly a boolean attribute indicating whether the value is read-only step a stepping interval to use when using up and down ...
...our above example contains a placeholder saying that the value should be a multiple of 10, so it makes sense to add a step value of 10: <input type="number" placeholder="multiple of 10" step="10"> in this example, you should find that the up and down step arrows will increase and decrease the value by 10 each time, not 1.
... text we have been using so far: <input type="number" placeholder="x10" step="10" min="0" max="100" id="number"> then we add some css to narrow the width of the element with the id selector #number: #number { width: 3em; } the result looks like this: offering suggested values you can provide a list of default options from which the user can select by specifying the list attribute, which contains as its value the id of a <datalist>, which in turn contains one <option> element per suggested value.

<input type="url"> - HTML: Hypertext Markup Language
value the <input> element's value attribute contains a domstring which is automatically validated as conforming to url syntax.
... additional attributes in addition to the attributes that operate on all <input> elements regardless of their type, url inputs support the following attributes: attribute description list the id of the <datalist> element that contains the optional pre-defined autocomplete options maxlength the maximum number of characters the input should accept minlength the minimum number of characters long the input can be and still be considered valid pattern a regular expression the input's contents must match in order to be valid placeholder an exemplar value to display in the input field w...
...the list attribute specifies the id of a <datalist>, which in turn contains one <option> element per suggested value; each option's value is the corresponding suggested value for the url entry box.

<meta>: The Document-level Metadata element - HTML: Hypertext Markup Language
content this attribute contains the value for the http-equiv or name attribute, depending on which is used.
... refresh this instruction specifies: the number of seconds until the page should be reloaded - only if the content attribute contains a positive integer.
... the number of seconds until the page should redirect to another - only if the content attribute contains a positive integer followed by the string ';url=', and a valid url.

<title>: The Document Title element - HTML: Hypertext Markup Language
it only contains text; tags within the element are ignored.
... permitted parents a <head> element that contains no other <title> element.
... a common navigation technique for users of assistive technology is to read the page title and infer the content the page contains.

Global attributes - HTML: Hypertext Markup Language
the attribute contains one “language tag” (made of hyphen-separated “language subtags”) in the format defined in tags for identifying languages (bcp47).
... style contains css styling declarations to be applied to the element.
... title contains a text representing advisory information related to the element it belongs to.

A re-introduction to JavaScript (JS tutorial) - JavaScript
for (var i = 0; i < 5; i++) { // will execute 5 times } javascript also contains two other prominent for loops: for...of for (let value of array) { // do something with value } and for...in: for (let property in object) { // do something with object property } the && and || operators use short-circuit logic, which means whether they will execute their second operand is dependent on the first.
...javascript is a prototype-based language that contains no class statement, as you'd find in c++ or java (this is sometimes confusing for programmers accustomed to languages with a class statement).
...in this snippet, ...args (including the ellipsis) is called the "rest arguments" — as the name implies, this contains the rest of the arguments.

Control flow and error handling - JavaScript
the javascript reference contains exhaustive details about the statements in this chapter.
... the try...catch statement consists of a try block, which contains one or more statements, and a catch block, containing statements that specify what to do if an exception is thrown in the try block.
... the finally block the finally block contains statements to be executed after the try and catch blocks execute.

Math.hypot() - JavaScript
polyfill a naive approach that does not handle overflow/underflow issues: if (!math.hypot) math.hypot = function() { var y = 0, i = arguments.length, containsinfinity = false; while (i--) { var arg = arguments[i]; if (arg === infinity || arg === -infinity) containsinfinity = true y += arg * arg } return containsinfinity ?
... infinity : math.sqrt(y) } a polyfill that avoids underflows and overflows: if (!math.hypot) math.hypot = function () { var max = 0; var s = 0; var containsinfinity = false; for (var i = 0; i < arguments.length; ++i) { var arg = math.abs(number(arguments[i])); if (arg === infinity) containsinfinity = true if (arg > max) { s *= (max / arg) * (max / arg); max = arg; } s += arg === 0 && max === 0 ?
... 0 : (arg / max) * (arg / max); } return containsinfinity ?

try...catch - JavaScript
description the try statement consists of a try-block, which contains one or more statements.
...this gives us three forms for the try statement: try...catch try...finally try...catch...finally a catch-block contains statements that specify what to do if an exception is thrown in the try-block.
... function isvalidjson(text) { try { json.parse(text); return true; } catch { return false; } } the finally-block the finally-block contains statements to execute after the try-block and catch-block(s) execute, but before the statements following the try...catch...finally-block.

Digital audio concepts - Web media technologies
each channel contains a sample indicating the amplitude of the audio being produced by that source at a given moment in time.
...each audio frame is a data record that contains the samples for all of the channels available in an audio signal.
...in particular, the waveform for music is almost always more complex than that of an audio sample that contains only human voices.

Image file type and format guide - Web media technologies
each image consists of 2 to 4 #define directives, providing the width and height of the bitmap (and optionally the hotspot, if the image is designed as a cursor), followed by an array of unsigned char, where each value contains 8 1-bit monochrome pixels.
...type image/xbm, image-xbitmap file extension(s) .xbm specification none browser compatibility firefox 1–3.5, internet explorer 1–5 maximum dimensions unlimited supported color modes color mode bits per component description greyscale 1 each byte contains eight 1-bit pixels.
...if your image contains fewer than 256 colors, gif is an option, although png often compresses even smaller with its indexed compression option (png-8).

WebAssembly Concepts - WebAssembly
memory: a resizable arraybuffer that contains the linear array of bytes read and written by webassembly’s low-level memory access instructions.
...the glue code also contains the logic for calling the above-mentioned webassembly javascript apis to fetch, load and run the .wasm file.
...if the application uses opengl, the html also contains a <canvas> element that is used as the rendering target.

Module structure of the SDK - Archive of obsolete content
commonjs defines: an object called exports which contains all the objects which a commonjs module wants to make available to other modules a function called require which a module can use to import the exports object of another module.
... for example, the following add-on contains an additional module directly under "lib", and other modules under subdirectories of "lib": my-addon lib main.js password-dialog.js secrets hash.js storage password-store.js to import modules into main: // main.js code var dialog = require("./password-dialog"); var hash = require("./secrets/...

panel - Archive of obsolete content
the panel just contains a <textarea> element: when the user presses the return key, the contents of the <textarea> is sent to the main add-on code.
...it contains a single key named script whose value is a boolean that indicates whether or not to execute script in the content.

io/file - Archive of obsolete content
if the string contains "r", the file is opened in read-only mode.
...if the string contains "b", the contents will be returned in binary mode.

ui/button/action - Archive of obsolete content
"./firefox-16.png", "32": "./firefox-32.png" }, onclick: firstclick }); function firstclick(state) { console.log("you clicked '" + state.label + "'"); button.removelistener("click", firstclick); button.on("click", subsequentclicks); } function subsequentclicks(state) { console.log("you clicked '" + state.label + "' again"); } the listener is passed a state object that contains all the button's properties.
...this contains all the button's properties.

cfx to jpm - Archive of obsolete content
if the package.json does include an id field, and it contains "@", then this is written into the install.rdf as the add-on id.
... what you need to do all this means that: if your package.json contains an id field, and its value does not contain "@", then you must append "@jetpack" to it when switching to jpm.

Bootstrapped extensions - Archive of obsolete content
this is done using a special script file that's included in the extension that contains functions the browser calls to command the extension to install, uninstall, start up, and shut down.
... creating a bootstrapped extension to mark an extension as bootstrappable, you need to add the following element to its install manifest: <em:bootstrap>true</em:bootstrap> then you need to add a bootstrap.js file that contains the required functions; this should be alongside the install.rdf file in the extension's package.

Bookmarks - Archive of obsolete content
var ios = components.classes["@mozilla.org/network/io-service;1"] .getservice(components.interfaces.nsiioservice); var uri = ios.newuri("http://google.com/", null, null); var bookmarksarray = bmsvc.getbookmarkidsforuri(uri, {}); after executing this code, the array bookmarksarray contains the ids of all bookmarks that refer to the specified uri (in this case, "http://google.com").
... finding the folder containing an item if you need to know what folder contains an item (this can be especially handy after using nsinavbookmarksservice.getbookmarkidsforuri() to find bookmarks for a given uri), you can use the nsinavbookmarksservice.getfolderidforitem() method.

Miscellaneous - Archive of obsolete content
this page contains small, self-explanatory code snippets.
...event.detail contains the number of lines to scroll.

Extension Versioning, Update and Compatibility - Archive of obsolete content
if the install.rdf contains any targetplatform entries then the platform of the currently running application must be listed or the installation will be rejected.
...this means that if your update manifest contains an entry for the currently installed version of the add-on, and the entry's targetapplication entry specifies a larger maxversion then the application will use this value instead of that specified in the add-on's install.rdf.

Listening to events in Firefox extensions - Archive of obsolete content
if the page contains scripts or other behaviors that fire during loading that you want to continue to execute every time the user navigates to the page, or if you want to know when a user has navigated to a cached page, use the new pageshow event.
...if the page contains frames, then when the cached page is loaded: pageshow events from each frame fire before the pageshow event in the main document fires.

Connecting to Remote Content - Archive of obsolete content
in the onload callback function, the responsetext parameter contains the server response as text.
...the xslt tutorial contains details for building these templates.

Signing an XPI - Archive of obsolete content
windows contains its own version of some of these files (e.g.
... hint: when applying for a certificate ensure that the organisation (o) contains your name and not the issuer's default text, because this is what is displayed to users.

Add-ons - Archive of obsolete content
it contains metadata identifying the add-on, providing information about who created it, where more information can be found about it, which versions of what applications it is compatible with, how it should be updated, and so on.
... legacy add-ons this section contains links to documentation for legacy technology for add-on development, including: legacy extensions for firefox for android add-ons that work with desktop firefox do not automatically work in firefox for android: overlay extensions this page contains links to documentation for the approach to developing extensions for gecko-based applications which uses: performance best practices in extensions one of firefox's great advantages is its extreme extensibility.

Adding preferences to an extension - Archive of obsolete content
establish the defaults in order to set a default preference for the stock to monitor, we need to add a new folder to our extension's package, called "defaults", which in turn contains another folder called "preferences".
... once we've established that the event is in fact a preference change, we look at the data parameter, which contains the name of the preference that changed.

Localizing an extension - Archive of obsolete content
the stockwatcher2.dtd file contains the mappings for the stockwatcher2.xul file: <!entity panel_loading "loading..."> <!entity menu_refresh_now.label "refresh now"> <!entity menu_apple.label "apple (aapl)"> <!entity menu_google.label "google (goog)"> <!entity menu_microsoft.label "microsoft (msft)"> <!entity menu_yahoo.label "yahoo (yhoo)"> update the xul files each xul file needs to reference its corresponding locale file.
...localizing strings in javascript code if your javascript code contains literal strings that need to be localized, as does our stock watcher sample, we need to make those localizable as well.

Images, Tables, and Mysterious Gaps - Archive of obsolete content
the baseline's exact placement is dependent on the "default" font for the line box (represented by the red box), which is determined by the value of font-family for the element that contains the line box.
... so we have an image sitting on the baseline of a line box that contains only the image.

MCD, Mission Control Desktop, AKA AutoConfig - Archive of obsolete content
it also contains an interesting feature that i did not use anymore -> autoconfig from a web server!
...// getplatform().contains("unix")...

Notes on HTML Reflow - Archive of obsolete content
a frame is rectangular, with width, height, and an offset from the parent frame that contains it.
...in reflowdirtychild, the parent frame sets the ns_frame_has_dirty_child state bit on itself, and does any bookkeeping necessary to remember which child is dirty (for example, the block frame marks the linebox dirty that contains the child frame).

Using XML Data Islands in Mozilla - Archive of obsolete content
rder").textcontent; var parser = new domparser(); var doc = parser.parsefromstring(ordersource, "application/xml"); var lineitems = doc.getelementsbytagnamens("http://example.mozilla.org/purchaseorderml", "lineitem"); var firstprice = lineitems[0].getelementsbytagnamens("http://example.mozilla.org/purchaseorderml", "price")[0].textcontent; document.body.textcontent = "the purchase order contains " + lineitems.length + " line items.
...pt> function rundemo() { var doc = document.getelementbyid("purchase-order").contentdocument; var lineitems = doc.getelementsbytagnamens("http://example.mozilla.org/purchaseorderml", "lineitem"); var firstprice = lineitems[0].getelementsbytagnamens("http://example.mozilla.org/purchaseorderml", "price")[0].textcontent; document.getelementbyid("output-box").textcontent = "the purchase order contains " + lineitems.length + " line items.

ActiveX Control for Hosting Netscape Plug-ins in IE - Archive of obsolete content
this 100k activex control contains the entire np api implementation and probably worked much like pluginhostctrl.dll does now.
... package it there is a subdirectory named cab/ which contains a script and a readme.txt for producing your own signed cab files.

Style System Overview - Archive of obsolete content
↓ quote quote ↓ span class="emph" example stylesheet doc { display: block; text-indent: 1em; } title { display: block; font-size: 3em; } para { display: block; } [class="emph"] { font-style: italic; } css style rule representation each declaration block is represented by an nscssdeclaration an cssstyleruleimpl contains each selector associated with that declaration, and the declaration, and is the most important implementation of nsistylerule.
... to allow for optimizations, each style struct contains only inherited properties or only “reset” properties.

Using microformats - Archive of obsolete content
if provided, this is a javascript object that contains zero or more of the following flags: recurseexternalframes if true, child frames are included in the search.
...if provided, this is a javascript object that contains zero or more of the following flags: recurseexternalframes if true, child frames that reference external content are included in the search.

JavaScript Client API - Archive of obsolete content
we're also going to import ''util.js'' as it contains many useful helpers.
...syncengine contains a lot of code which handles logic for the core sync algorithm, but your subclass won't need to call any of this directly, unless you are overriding part of the sync algorithm to provide custom sync behavior (an advanced technique outside the scope of this article).

Hidden prefs - Archive of obsolete content
note, the ui has "name or email contains:".
...see http://lxr.mozilla.org/mozilla/sourc...drdatabase.idl for the list of valid attributes "c" == contains.

Introducing the Audio API extension - Archive of obsolete content
this event therefore contains the raw samples of a period of time.
... the mozaudioavailable event has 2 attributes: framebuffer: framebuffer (i.e., an array) containing decoded audio sample data (i.e., floats) time: timestamp for these samples measured from the start in seconds the framebuffer contains an array of audio samples.

Microsummary XML grammar reference - Archive of obsolete content
the <template> element the <template> element contains the xslt stylesheet which transforms web pages into their microsummaries.
...his element, firefox will never update microsummaries more frequently than once per minute; because firefox checks for expired microsummaries every 15 seconds, it is possible for a microsummary update to begin up to 15 seconds later than its interval indicates; firefox respects the browser cache when updating microsummaries, so it will not reload a page to update its microsummary if the cache contains a fresh copy of the page.

Mozilla Application Framework in Detail - Archive of obsolete content
don't feel limited by the widgets that the framework already contains!
... more information using the mozilla soap api (an article written for the apple developer connection) xml extras (the home page for the xml extras code module, which contains mozilla's web services support) soap scripts in mozilla (documentation on soap in mozilla from the engineer who implemented it) xpinstall, mozilla's cross platform installation technology one of the many things that makes the mozilla platform easy for both users and developers is that applications can be installed, extended, or upgraded with simple web page links.

Mozilla Crypto FAQ - Archive of obsolete content
for more information see 15 cfr part 730, section 730.2 (concerning statutory authority for the ear), and the document "principal statutory authority for the export administration regulations", which contains copies of the export administration act of 1979 (as amended), the international emergency economic powers act (as amended), and related legislation and executive orders.
... for more information see the document "principal statutory authority for the export administration regulations", which contains a copy of executive order 13026.

Table Cellmap - Archive of obsolete content
further it contains info whether this entry is a row- or colspan.
...this can produce enormous costs once the cellmap contains large holes that are not caused by zero spans, this is at least a o2(n) algorithm.

Running Tamarin performance tests - Archive of obsolete content
use --csvappend if you want to append the results to the csv file support files testconfig.txt this file contains instructions for how the harness should handle performance tests.
... metricinfo.py this file contains a list of metrics that the harness will look for and record.

Tamarin Build System Documentation - Archive of obsolete content
compile, smoke, or test to show the build slaves from the most recent phase run or click on an individual box to display the test result below the phase table the waterfall displays each buildstep and result the left side contains the time column and the user/revision link to represent the revision triggering a build, mouse over the user to see the revision and submission notes each buildstep run on a slave is a box with color indicating status, red is failed, green passed, yellow has warnings click the stdio link to see the output click on the build yellow box at the bottom of a set of buildsteps to see the result of all...
... the test/acceptance/testconfig.txt file contains a list of tests marked as expected failures or skipped with the configuration see the testconfig.txt for current instructions generally the format is comma separated list with regular expressions for test and configuration.

Anonymous Content - Archive of obsolete content
binding scopes are determined by the bound element that contains the binding responsible for the generation of the anonymous nodes.
...if anonymous content that contains an insertion point is removed, then any explicit children found underneath the insertion point are relocated to any other insertion points that match.

Binding Implementations - Archive of obsolete content
a getter contains script whose return value is handed back when the property is requested.
... a setter contains a script that is invoked when a new value is assigned to the property.

Creating XPI Installer Modules - Archive of obsolete content
a xpi file typically contains the resources to be installed (in this case the barley.jar we want to have installed in the mozilla/bin/chrome/ directory) and an install script that guides the installation process.
...the javascript file barley.js contains a single function, bar(), defined as follows: function bar() { alert("aphids"); } if you want to use the same gif image that is used in the barley package, it can be grabbed from here.

Using XPInstall to Install Plugins - Archive of obsolete content
since the file format that contains the software and the install.js javascript file is a cross-platform file (zip) and since javascript is understood by mozilla browsers on all platforms, often one single xpi package can be deployed on all platforms.
...here is an example: var plid = "myplugin.plug/version=6.5"; err = initinstall(software_name, plid, version); if (err != 0) { // install may have failed because of n6 and = // replace plid with a simple string err = initinstall(software_name, "mypluginstring", version); if (err != 0) cancelinstall(err); } note that above, the plid contains an "=" and in case the xpi package is running on browsers that treat "=" as an illegal token, the workaround is to handle the error and invoke initinstall again.

windowsShortcut - Archive of obsolete content
aicon a filespecobject representing the absolute path (including fiilename) to a file that contains icons.
... can be either .ico, .dll, .exe, or any other binary file that contains icons.

A XUL Bestiary - Archive of obsolete content
like a chrome, that chunk usually contains xul content, css and graphic skin information, localization strings, and maybe some platform-specific code.
...xul itself contains very little provision for how widgets are to be presented in the interface.

Namespaces - Archive of obsolete content
duplicates element and attribute names can occur when an xml document contains elements and attributes from two or more different xml schemas (or dtds).
...here's a question: what namespace contains the element foo in the xml document below?

webNavigation - Archive of obsolete content
« xul reference webnavigation type: nsiwebnavigation this read-only property contains the nsiwebnavigation object for the document.
...it also contains the load constants used by reloadwithflags and loaduriwithflags.

Multiple Queries - Archive of obsolete content
the queryset element is a bit of a misnomer, it actually only contains one query each.
...al"/> </query> <action> <button uri="?photo" image="?photo" label="view" orient="vertical"/> </action> </queryset> <queryset> <query> <content uri="?start"/> <member container="?start" child="?photo"/> </query> <action> <image uri="?photo" src="?photo"/> </action> </queryset> </template> </hbox> this template contains two queries, the first contains a <triple> which matches only the photo with a title of 'canal'.

Using Recursive Templates - Archive of obsolete content
this is done with all nodes that have children to indicate that the node contains generated children as well as whether the node is empty.
...ry expr="*"> <assign var="?type" expr="local-name(.)"/> </query> <rule> <where subject="?type" rel="equals" value="group"/> <action> <groupbox uri="?"> <caption label="?name"/> </groupbox> </action> </rule> <rule> <action> <label uri="?" value="?name"/> </action> </rule> </template> </vbox> the first rule contains a where clause which matches only those results that have a type of group.

Adding Methods to XBL-defined Elements - Archive of obsolete content
the method element contains two type of child elements, parameter elements which describe the parameters to the method and body which contains the script for the method.
... the body element contains the script that is executed when the method is called.

Creating a Wizard - Archive of obsolete content
the wizard a wizard is a special type of dialog that contains a number of pages.
...each page contains a single question or a set of related questions.

Creating an Installer - Archive of obsolete content
it contains a number of methods which can be used to start an installation.
...this jar file contains all of the files used by your application.

Element Positioning - Archive of obsolete content
the third button is larger because it contains more content.
... cropping text and buttons you could potentially create a button element that contains a label that is larger than the maximum width of the button.

Groupboxes - Archive of obsolete content
the groupbox is a type of box, and the elements it contains are aligned according to the xul box rules.
...the groupbox contains a horizontal box with a label and textbox.

Install Scripts - Archive of obsolete content
in an install script, there is no associated window, however the global object will be an install object which contains a number of functions to customize the install process.
...because the find files dialog contains content, a skin file and a locale file, registerchrome() will need to be called three times.

Introduction to XBL - Archive of obsolete content
an xbl file contains a set of bindings.
...shows the basic skeleton of an xbl file: <?xml version="1.0"?> <bindings xmlns="http://www.mozilla.org/xbl"> <binding id="binding1"> <!-- content, property, method and event descriptions go here --> </binding> <binding id="binding2"> <!-- content, property, method and event descriptions go here --> </binding> </bindings> the bindings element is the root element of an xbl file and contains one or more binding elements.

Modifying the Default Skin - Archive of obsolete content
the file classic.jar contains the skin definitions.
... the global directory within this archive contains the main style definitions for how to display the various xul elements.

XUL FAQ - Archive of obsolete content
this document contains answers to frequently asked questions about xul, mozilla's markup language for describing application's user interface.
... does each prefpane contains a <preferences></preferences> block, even if empty?

XUL element attributes - Archive of obsolete content
empty type: boolean set to true if the element is a container that contains no children.
...this can be used instead of setting the tooltip to a popup for the common case where it contains only text.

menulist - Archive of obsolete content
attributes accesskey, crop, disableautoselect, disabled, editable, focused, image, label, oncommand, open, preference, readonly, sizetopopup, tabindex, value properties accessibletype, crop, description, disableautoselect, disabled, editable, editor, image, inputfield, itemcount, label, menuboxobject, menupopup, open, selectedindex, selecteditem, tabindex, value methods appenditem, contains, getindexofitem, getitematindex, insertitemat, removeallitems, removeitemat, select examples <menulist> <menupopup> <menuitem label="option 1" value="1"/> <menuitem label="option 2" value="2"/> <menuitem label="option 3" value="3"/> <menuitem label="option 4" value="4"/> </menupopup> </menulist> attributes accesskey type: character this should be set to a char...
... contains( item ) return type: boolean returns true if the menulist contains the specified menuitem as one of its items.

stringbundle - Archive of obsolete content
the "src" attribute accepts only absolute chrome:// urls (see bugs 133698, 26291) attributes src properties applocale , src, stringbundle, strings methods getformattedstring, getstring examples (example needed) attributes src type: uri the uri of the property file that contains the localized strings.
...the enumeration contains nsipropertyelement objects.

toolbar - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] a container which typically contains a row of buttons.
...this means that the palette now only contains items not already in the toolbar.

tree - Archive of obsolete content
if the element contains more than this number of rows, a scrollbar will appear which the user can use to scroll to the other rows.
...this object implements the nsitreeboxobject interface and contains functions for retrieving the cells at certain coordinates, redrawing cells and scrolling the tree.

treeitem - Archive of obsolete content
the treeitem contains a single row and all of what appear to the user as that row's descendants.
... empty type: boolean set to true if the element is a container that contains no children.

where - Archive of obsolete content
multiple type: boolean set to true to indicate that the value contains multiple values separated by commas.
... value of the subject must be less than the value greater the numeric value of the subject must be greater than the value before the string value of subject must come before value alphabetically after the string value of subject must come after value alphabetically startswith the value of subject must start with the value endswith the value of subject must end with the value contains the value of subject must contain the value as a substring subject type: string the variable or string to compare.

XULRunner tips - Archive of obsolete content
contains tons of non-working code (bit rot).
...this way i have one directory where i keep all my mozilla extensions, and each application (firefox, thunderbird) simply contains a few small, one line files pointing to the location of the extensions.

Archived Mozilla and build documentation - Archive of obsolete content
ant script to assemble an extension this ant script helps to package an extension archived spidermonkey docs this section contains old spidermonkey documentation.
... plugin architecture this page contains some notes on how plugins work internally in gecko.

NPP_New - Archive of obsolete content
instance contains instance-specific private data for the plug-in and the browser.
...the plug-in is responsible for freeing the memory for the npsaveddata and the buffer it contains.

Adobe Flash - Archive of obsolete content
with fscommands, developers may choose to use macromedia's actionscript language to make a call back into the environment that contains the flash animation -- in this case, the html page.
...this shows communication flowing in the other direction -- namely, an action taken within the flash animation affects something in the html page that contains the flash animation.

Shipping a plugin as a Toolkit bundle - Archive of obsolete content
plugin packages should only need to package a small set of files in the following structure in the xpi file: install.rdf plugins/ pluginlib.dll plugintypes.xpt the install.rdf file contains an install manifest that describes the plugin to the user.
...inid@myplugin.com</em:id> <em:name>my plugin</em:name> <em:version>1.0</em:version> <em:targetapplication> <description> <em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id> <em:minversion>1.5</em:minversion> <em:maxversion>4.0.*</em:maxversion> </description> </em:targetapplication> <em:unpack>true</em:unpack> </description> </rdf> this contains 5 required pieces of information.

The First Install Problem - Archive of obsolete content
example: [hkey_local_machine\software\mozillaplugins\@mycompany.com/myapplication,version=5.01] version=5.01 mimetypes -- this is a subkey and contains individual mimetypes as further subkeys.
... hkey_local_machine\software\mozillaplugins\@mycompany.com/myapplication,version=5.01/mimetypes/somemimetypesubkey/ the mimetypes subkey contains further subkeys based on an application's actual mimetypes.

Vulnerabilities - Archive of obsolete content
an attacker could craft a fraudulent email message that contains hyperlinks that, when rendered in html, appear to the recipient to be benign but actually take the recipient to a malicious web site when they are clicked on.
... for example, the address resolution protocol (arp) trusts that an arp reply contains the correct mapping between media access control (mac) and internet protocol (ip) addresses.

-ms-filter - Archive of obsolete content
syntax the -ms-filter property is specified as a string that contains a list of one or more items, separated by spaces, of the following types: filters transitions procedural surfaces formal syntax filter: <-ms-filter-function>+ -ms-filter: [ "'" <-ms-filter-function># "'" ] | [ '"' <-ms-filter-function># '"' ] where <-ms-filter-function> = <-ms-filter-function-progid> | <-ms-filter-function-legacy> where <-ms-filter-function-progid> = 'progid:' [ <ident-...
...token> '.' ]* [ <ident-token> | <function-token> <any-value> ')' ] <-ms-filter-function-legacy> = <ident-token> | <function-token> <any-value> ')' the <string> contains the list of filters, transitions, and procedural surfaces.

VBArray.toArray - Archive of obsolete content
for example, a vbarray with three dimensions and three elements in each dimension is converted into a javascript array as follows: suppose the vbarray contains: (1, 2, 3), (4, 5, 6), (7, 8, 9).
... after translation, the javascript array contains: 1, 2, 3, 4, 5, 6, 7, 8, 9.

JavaPackage - Archive of obsolete content
for example, the netscape package contains the package netscape.javascript; the netscape.javascript package contains the classes jsobject and jsexception.
... properties the properties of a javapackage are the javaclass objects and any other javapackage objects it contains.

Writing JavaScript for XHTML - Archive of obsolete content
if your code contains either of these, you can work around this with cdata sections: <script type="text/javascript"> <![cdata[ // is the variable a non-negative integer less than 10?
...so if the browser tells our server, that it can handle xhtml as xml, that is, the accept: field in the http head contains application/xhtml+xml somewhere, we are safe to send the content as xml.

Troubleshooting XForms Forms - Archive of obsolete content
ensure that your <html> element contains the supported namespace declaration: xmlns="http://www.w3.org/1999/xhtml" (instead of the newer, unratified version, xhtml 2.0, located at http://www.w3.org/2002/06/xhtml2 ) inline instance, no controls get bound have you remembered to use the correct namespace for the instance nodes?
... if your binding expression contains a /, look for any containing xf:group, xf:repeat, xf:input or other elements that set the context node.

Requests For Enhancement - Archive of obsolete content
rfe categories xforms api this section contains rfe to the xforms api.
... custom controls interfaces this section contains rfe to the custom control interfaces.

Building up a basic demo with A-Frame - Game development
html structure the first step is to create an html document — inside your project directory, create a new index.html file, and save the follow html inside it: <!doctype html> <html> <head> <meta charset="utf-8"> <title>mdn games: a-frame demo</title> <script src="aframe.min.js"></script> </head> <body> <!-- html goes here --> </body> </html> this contains some basic information like the document charset and <title>.
...add it now: <a-box color="#0095dd" position="0 1 0" rotation="20 40 0"> </a-box> it contains a few parameters already defined: color, position and rotation — these are fairly obvious, and define the base color of the cube, the position inside the 3d scene, and the rotation of the cube.

Building up a basic demo with Babylon.js - Game development
f-8"> <title>mdn games: babylon.js demo</title> <style> html,body,canvas { margin: 0; padding: 0; width: 100%; height: 100%; font-size: 0; } </style> </head> <body> <script src="babylon.js"></script> <canvas id="render-canvas"></canvas> <script> var canvas = document.getelementbyid("render-canvas"); /* all our javascript code goes here */ </script> </body> </html> it contains some basic information like the document <title>, and some css to set the width and height of the <canvas> element (which babylon.js will use to render the content on) to fill the entire available viewport space.
...add the following code to the bottom of your second <script> element: var engine = new babylon.engine(canvas); the babylon global object contains all the babylon.js functions available in the engine.

Building up a basic demo with PlayCanvas editor - Game development
as you can see, the file contains some boilerplate code already: pc.script.create('boxanimation', function (app) { // creates a new boxanimation instance var boxanimation = function (entity) { this.entity = entity; }; boxanimation.prototype = { // called once after all resources are loaded and before the first update initialize: function () { }, // called every frame, dt ...
...add the following line inside this function, to rotate the cube on every frame: this.entity.rotate(dt*10, dt*20, dt*30); in the line above this.entity refers to the object to which the script will be attached (the box); using the dt variable, which contains the delta time passed since the previous frame, we can rotate the box by a different amount around all three axes.

Building up a basic demo with the PlayCanvas engine - Game development
tle>mdn games: playcanvas demo</title> <style> body { margin: 0; padding: 0; } canvas { width: 100%; height: 100%; } </style> </head> <body> <script src="playcanvas-latest.js"></script> <canvas id="application-canvas"></canvas> <script> var canvas = document.getelementbyid("application-canvas"); /* all our javascript code goes here */ </script> </body> </html> it contains some basic information like the document <title>, and some css to set the width and height of the <canvas> element that playcanvas will use to 100% so that it will fill the entire available viewport space.
...add the following code to the bottom of your second <script> element: var app = new pc.application(canvas); app.start(); the pc global object contains all the playcanvas functions available in the engine.

Building up a basic demo with Three.js - Game development
a typical 3d scene in a game — even the simplest one — contains standard items like shapes located in a coordinate system, a camera to actually see them, lights and materials to make it look better, animations to make it look alive, etc.
...e will use: <!doctype html> <html> <head> <meta charset="utf-8"> <title>mdn games: three.js demo</title> <style> body { margin: 0; padding: 0; } canvas { width: 100%; height: 100%; } </style> </head> <body> <script src="three.min.js"></script> <script> var width = window.innerwidth; var height = window.innerheight; /* all our javascript code goes here */ </script> </body> </html> it contains some basic information like the document <title>, and some css to set the width and height of the <canvas> element, that three.js will insert on the page to 100% to fill the entire available viewport space.

Square tilemaps implementation: Static maps - Game development
it contains the basic map properties: cols: the width of the map, in columns.
... tiles contains the actual visual map data.

Legacy layout methods - Learn web development
start out by making a local copy of our sample simple-grid.html file, which contains the following markup in its body.
... include the skeleton and normalize css in the html page, by adding the following to its head: <link href="normalize.css" rel="stylesheet"> <link href="skeleton.css" rel="stylesheet"> skeleton includes more than a grid system — it also contains css for typography and other page elements that you can use as a starting point.

How CSS is structured - Learn web development
external stylesheet an external stylesheet contains css in a separate file with a .css extension.
...the example below contains two rules: one for the h1 selector and one for the p selector.

What do common web layouts contain? - Learn web development
contains information relevant to all pages (like site name or logo) and an easy-to-use navigation system.
...like the header, contains less prominent global information like legal notices or contact info.

UI pseudo-classes - Learn web development
the email input on the other hand is valid when empty, as it is not required, but invalid when it contains something that is not a proper email address.
... the following are fairly well-supported in modern browsers: the :focus-within pseudo-class matches an element that has received focus or contains an element that has received focus.

Introduction to HTML - Learn web development
guides this module contains the following articles, which will take you through all the basic theory of html and provide ample opportunity for you to test out some skills.
...it contains information such as the page <title>, links to css (if you want to style your html content with css), links to custom favicons, and metadata (data about the html, such as who wrote it, and important keywords that describe the document).

Images in HTML - Learn web development
the src attribute contains a path pointing to the image you want to embed in the page, which can be a relative or absolute url, in the same way as href attribute values in <a> elements.
...it contains the content you need, and is nicely stylable using css.

Responsive images - Learn web development
each value contains a comma-separated list, and each part of those lists is made up of three sub-parts.
...the code in responsive.html looks like so: <picture> <source media="(max-width: 799px)" srcset="elva-480w-close-portrait.jpg"> <source media="(min-width: 800px)" srcset="elva-800w.jpg"> <img src="elva-800w.jpg" alt="chris standing up holding his daughter elva"> </picture> the <source> elements include a media attribute that contains a media condition — as with the first srcset example, these conditions are tests that decide which image is shown — the first one that returns true will be displayed.

Video and audio content - Learn web development
here is a <a href="rabbit320.webm">link to the video</a> instead.</p> </video> the features of note are: src in the same way as for the <img> element, the src (source) attribute contains a path to the video you want to embed.
...the type attribute contains the mime type of the file specified by the <source>, and browsers can use the type to immediately skip videos they don't understand.

Build your own function - Learn web development
you'll see that the html is simple — the body contains just a single button.
...we are making the onclick handler equal to an anonymous function, which contains the code to run when the button is clicked.

Functions — reusable blocks of code - Learn web development
this contains two functions called a() and b(), and three variables — x, y, and z — two of which are defined inside the functions, and one in the global scope.
... it also contains a third function called output(), which takes a single parameter and outputs it in a paragraph on the page.

Test your skills: Loops - Learn web development
name — contains a name to search for para — contains a reference to a paragraph, which will be used to report the results.
... para — contains a reference to a paragraph, which will be used to report the results.

Fetching data from the server - Learn web development
if this completes successfully, the function inside the first .then() block contains the response returned from the network.
... next, we chain another .then() onto the end of our first one, the success function that contains the json returned from the response.json() promise.

Handling text — strings in JavaScript - Learn web development
html provides structure and meaning to our text, css allows us to precisely style it, and javascript contains a number of features for manipulating strings, creating custom welcome messages and prompts, showing the right text labels when needed, sorting terms into the desired order, and much more.
... let one = 'hello, '; let two = 'how are you?'; let joined = one + two; joined; the result of this is a variable called joined, which contains the value "hello, how are you?".

Measuring performance - Learn web development
the report contains scores about how your website is performing, both for mobile and desktop.
... at the time of writing, mdn's performance report summary looks similar to the following: a performance report contains information about things like how long a user has to wait before anything is displayed on the page, how many bytes need to be downloaded to display a page, and much more.

Properly configuring server MIME types - Learn web development
look in the iana | mime media types registry which contains all registered mime types.
... if you're using the apache web server, simply copy this sample .htaccess file to the directory that contains the files that you want to send with the correct mime types.

Server-side web frameworks - Learn web development
for example, the httprequest object that django passes to every view function contains methods and properties for accessing the target url, the type of request (e.g.
...it contains a development server and debugger, and includes support for jinja2 templating, secure cookies, unit testing, and restful request dispatching.

Ember interactivity: Events, classes and state - Learn web development
minal command to generate a service for us to store our todo-list data in: ember generate service todo-data this should give you a terminal output like so: installing service create app/services/todo-data.js installing service-test create tests/unit/services/todo-data-test.js this creates a todo-data.js file inside the todomvc/app/services directory to contain our service, which initially contains an import statement and an empty class: import service from '@ember/service'; export default class tododataservice extends service { } first of all, we want to define what a todo is.
... add the following import statement below the existing one: import { tracked } from '@glimmer/tracking'; now add the following class below the previous line you added: class todo { @tracked text = ''; @tracked iscompleted = false; constructor(text) { this.text = text; } } this class represents a todo — it contains a @tracked text property containing the text of the todo, and a @tracked iscompleted property that specifies whether the todo has been completed or not.

Routing in Ember - Learn web development
it contains the following contents: import emberrouter from '@ember/routing/router'; import config from './config/environment'; export default class router extends emberrouter { location = config.locationtype; rooturl = config.rooturl; } router.map(function() { this.route('completed'); this.route('active'); }); the highlighted lines were added when the 2nd and 3rd commands above were run.
...it already contains a getter that returns all todos, and a getter that returns incomplete todos.

Vue resources - Learn web development
contains comprehensive documentation, including examples, cookbooks, and reference material.
...this contains information on customizing and extending the output you are generating via the cli.

Implementing feature detection - Learn web development
if you look at the dom inspector of your browser's developer tools, you'll see that modernizr has updated your <html> class value like so: <html class="js no-htmlimports sizes flash transferables applicationcache blobconstructor blob-constructor cookies cors ...and loads more values!> it now contains a large number of classes that indicate the support status of different technology features.
...it does this by making the global modernizr object available to the page it is applied to, which contains results of the feature detects as true/false properties.

Handling common HTML and CSS problems - Learn web development
if you look at this running live, you'll see that it contains two paragraphs, one of which is styled.
...mdn contains several useful types of content: reference material with browser support information for client-side web technologies, e.g.

Setting up your own test automation environment - Learn web development
note: saucelabs-sample-test-frameworks contains several useful examples showing how to set up different combinations of test/assertion tools.
... note: the resources menu option on the browserstack automation dashboard contains a wealth of useful information on using it to run automated tests.

Command line crash course - Learn web development
if you want to remove a directory that is not empty (and also remove everything it contains), then you can use the -r option (recursive), but this is dangerous.
...in this case, ls would normally print its output to stdout, but instead ls’s output is being piped into wc, which takes that output as an input, counting the number of lines it contains, and prints that count to stdout instead.

Package management basics - Learn web development
a bundle is the term that’s generally used to refer to a single file on your web server that contains all the javascript for your software — typically compressed as much as possible to help reduce the time it takes to get your software downloaded and displayed in your visitors’ browser.
... initialise a new project npm init yarn init as shown above, this will prompt and walk you through a series of questions to describe your project (name, license, description and so on) then generate a package.json for you that contains meta information about your project and its dependencies.

Mozilla accessibility architecture
accessible tree contains only a subset of nodes from the dom tree not all dom nodes are exposed through accessibility api toolkits -- only those objects deemed important by the developers of the toolkit.
...each nsaccessnode contains the dom node and weak pres shell for the object.

Mozilla's Section 508 Compliance
part of section 508 (§1194.21) specifically relates to mozilla, and the ability of us government agencies to buy software that contains mozilla software components.
...mozilla's appearance preferences panel contains a large number of color possibilities.

Creating a Language Pack
you'll see that it contains the files which in your localization were missing some entities.
... x-testing: changed: 6 missinginfiles: 6124 missing: 5 0% of entries changed if you now preview the contents of the mergedir, you'll see that it contains the files which in your localization were missing some entities.

Creating a spell check dictionary add-on
to create a dictionary add-on, simply create a zip file which contains the following files and folders: my-dictionary.xpi install.rdf dictionaries/ locale-code.dic locale-code.aff the .dic and .aff files must be placed in a subfolder named dictionaries within the zip file.
...this file contains information about your add-on such as name and version number (see below).

Inner and outer windows
that lets the document interact with the "physical" window, while the outer window can keep track of all the documents (inner windows) it contains.
...this happens, for example, when a document contains a <frame> or <iframe>.

mozbrowsercontextmenu
contextmenu a menu object (see the menu object, below) representing a custom menu defined via <menu> / <menuitem> elements and pointed to via a contextmenu attribute on the dom element clicked on, which contains the menu's id.
... the menu object an object representing a custom menu defined via <menu> / <menuitem> elements and pointed to via a contextmenu attribute on the dom element clicked on, which contains the menu's id.

JNI.jsm
jni.jsm contains all the js-ctypes needed to communicate with the jni libraries.
...a required object that contains up to five fields of key names: constructors, fields, static_fields, methods, and static_methods.

OS.File for the main thread
xhtml', 'canvas'); canvas.width = img.naturalwidth; canvas.height = img.naturalheight; var ctx = canvas.getcontext('2d'); ctx.drawimage(img, 0, 0); (canvas.toblobhd || canvas.toblob).call(canvas, function(b) { var r = cc['@mozilla.org/files/filereader;1'].createinstance(ci.nsidomfilereader); //new filereader(); r.onloadend = function() { // r.result contains the arraybuffer.
... promise resolves to an object contains a file object{file} and the path{path}.

Patching a Localization
a good patch only contains those changes that you intended to make.
... if it contains more, you'll likely regress something else.

Localization technical reviews
here is some of the criteria we use to perform technical reviews: revision attachment contains only relevant files we run into exports that contain .xpi langpacks and other random files.
... defines.inc the file for each app (like browser/defines.inc) contains the names of all contributors that a localization team would like to credit the work to.

Mozilla DOM Hacking Guide
basically it contains convenient methods to find out about the interfaces an object promises to support.
...it implements the nsidomdomimplementation interface (which contains the three methods mentionned above).

Mozilla Web Services Security Model
for example, when accessing a web service at http://www.example.com/dir1/dir2/service, if the access file at http://www.example.com/web-scripts-access.xml contains a delegate element, mozilla will instead use http://www.example.com/dir1/dir2/web...ipt-access.xml to determine whether access is permitted.
...if the file exists but contains no allow elements, then all access will be allowed.

Mozilla Style System Documentation
each of the style structs contains a group of properties.
...as stated above, each style struct contains only features that are inherited by default or those that are set to their initial value ("reset") by default.

Power profiling overview
each package contains multiple cores.
... each core typically has hyper-threading, which means it contains two logical cpus.

TraceMalloc
the shutdown log contains the stack trace of every allocation that has not been deallocated by shutdown.
...(a strongly connected component with only one node is listed as a single object.) any single object listed as a root is really a leak root, and any component listed as a root either (a) contains an object that is a root or (b) contains objects that form an ownership cycle that is a root.

PR_CreatePipe
on return, this parameter contains the file descriptor for the read end of the pipe.
...on return, this parameter contains the file descriptor for the write end of the pipe.

NSS 3.28 release notes
request to test and prepare for tls 1.3 this release contains improved support for tls 1.3, however, the code that supports tls 1.3 is still disabled by default (not built).
... the certificate validation code contains checks to no longer trust certificates that are issued by old wosign and startcom cas, after october 21, 2016.

nss tech note4
pulling certificate extension information out of ssl certificates nss technical note: 4 note: this document contains code snippets that focus on essential aspects of the task and often do not illustrate all the cleanup that needs to be done.
... the oid data structure contains an array of identifier bytes (each byte is a "level" in a hierarchical namespace), a text description, and some other things.

GC Rooting Guide
this is a template class where the template parameter is the type of the gc thing it contains.
... other jsobjects when defining a jsobject subclass that contains heap<t> fields, set the trace hook to invoke a function that traces those fields.

JS_CompileUTF8FileHandle
it should be the name of the file that contains the script, if available.
... see also the jsapi user guide contains example code using compiled scripts.

JS_DefineProperty
(exception: if attrs contains the jsprop_readonly flag, the setter will never be called, as property assignment will fail before it gets that far.
... if attrs contains the jsprop_getter (or jsprop_setter) flag, then getter (or setter) must point to a javascript function, not a c/c++ function.

JSAPI reference
note: the foss wiki page contains a few links to other libraries and programs that can make life easier when using spidermonkey and the jsapi.
...they have been removed in js 1.8.5, though js_enterlocalrootscope obsolete since javascript 1.8.5 js_leavelocalrootscope obsolete since javascript 1.8.5 js_leavelocalrootscopewithresult obsolete since javascript 1.8.5 js_forgetlocalroot obsolete since javascript 1.8.5 added in spidermonkey 1.8 if an object contains references to other gc things that are not stored in spidermonkey data structures ("slots"), it must implement the jstraceop hook to enable the garbage collector to traverse those references.

SpiderMonkey 1.8.8
it also contains new language and api features described in detail below.
... the jsresolve_classname and jsresolve_with resolve flags (passed to jsclass.resolve when jsclass.flags contains jsclass_new_resolve) have been removed.

SpiderMonkey 17
it also contains new language and api features described in detail below.
... the jsresolve_classname and jsresolve_with resolve flags (passed to jsclass.resolve when jsclass.flags contains jsclass_new_resolve) have been removed.

SpiderMonkey 38
spidermonkey 38 is outdated and contains known security vulnerabilities.
...it also contains new language and api features described in detail below.

SpiderMonkey 45
spidermonkey 45 is outdated and contains known security vulnerabilities.
...it also contains new language and api features described in detail below.

Secure Development Guidelines
takes and how they affect a product how to avoid making them how to mitigate them everything is oriented toward c/c++ introduction: gaining control specifics about the underlying architecture, using x86 as an example 6 basic registers (eax, ebx, ecx, edx, edi, esi) 2 stack-related registers (esp, ebp) mark top and bottom of current stack frame status register (eflags) contains various state information instruction pointer (eip) points to register being executed; can’t be modified directly introduction: gaining control (2) eip is modified using call or jump instructions attacks usually rely on obtaining control over the eip otherwise the attacker can try to control memory pointed to by an existing function pointer a vulnerability is required t...
...rgv) { char *file = argv[1]; int fd; struct stat statbuf; stat(file, &statbuf); if (s_islink(statbuf.st_mode)) { bailout(“symbolic link”); } else if (statbuf.st_uid != getuid) { bailout(“you don’t own the file”); } fd = open(file, o_rdwr); write(fd, argv[2], strlen(argv[2])); } file i/o: race conditions previous example contains a race condition the file may change between the call top stat() and open() this opens the possibility of writing arbitrary content to any file race conditions occur when two separate execution flows share a resource and its access is not synchronized properly race condition types include file (previously covered) thread (two threads share a resource but don’t lock it) signa...

AT APIs Support
but in the meantime it more up-to-date and contains more details than existed analogues for at-spi and msaa this documentation explains how makers of screen readers, voice dictation packages, onscreen keyboards, magnification software and other assitive technologies can support gecko-based software.
...none of the user interface contains standard os controls.

Mork
the meta-row of the table (different from the meta-row of a row) contains a few things you might care about.
...the presence of a row or rowreference in the meta-table indicates that said row is the meta-row of the table: it contains arbitrary properties for the entire table just like a normal row.

Manipulating bookmarks using Places
var ios = components.classes["@mozilla.org/network/io-service;1"] .getservice(components.interfaces.nsiioservice); var uri = ios.newuri("http://google.com/", null, null); var bookmarksarray = bmsvc.getbookmarkidsforuri(uri, {}); after executing this code, the array bookmarksarray contains the ids of all bookmarks that refer to the specified uri (in this case, "http://google.com").
... finding the folder containing an item if you need to know what folder contains an item (this can be especially handy after using nsinavbookmarksservice.getbookmarkidsforuri() to find bookmarks for a given uri), you can use the nsinavbookmarksservice.getfolderidforitem() method.

Places utilities for JavaScript
lmanno_feeduri - need to clarify here too, but i think for each livemark, there is an bookmark which contains an annotation storing the associated feed uri.
... lmanno_siteuri - need to clarify here, but i think for each livemark, there is an bookmark which contains an annotation storing the associated site uri.

Using the Places history service
a visit contains a reference to the url table for the page, the visit date, the transition type (typed, click, redirect, bookmark, etc.), a reference to the referring visit, and the session id.
... nsibrowserhistory.lastpagevisited: contains the uri of the last page visited.

Creating the Component Code
this is the object that contains the business logic, that implements functionality such as starting a network download, implementing interfaces that listen to the download progress, or providing a new content type handler.
... the source file for the weblock component contains three classes.

Detailed XPCOM hashtable guide
this entry class contains the key and the data that you are hashing (just like pldhash, above).
...the mozilla codebase already contains hash functions for most key types, including narrow and wide strings, pointers, and most binary data: void* (or nsisupports*) cast using ns_ptr_to_int32 char* string nscrt::hashcode() prunichar* string nsastring hashstring() nsacstring nsid& nsidhashkey::hashkey() writing a good hash function is well beyond the scope of...

Components.utils.cloneInto
function foo(greeting) { console.log("they said: " + greeting.message); } the add-on script can define an object, clone it, and pass it into this function: // add-on script var addonscriptobject = {"message" : "hello from add-on"}; contentwindow.foo(cloneinto(addonscriptobject, contentwindow)); // "they said: hello from add-on" cloning objects that have functions if the object to be cloned contains functions, you must pass the {clonefunctions:true} flag or you'll get an error.
...iptobject = cloneinto(addonscriptobject, contentwindow, {clonefunctions: true}); // page script var test = document.getelementbyid("test"); test.addeventlistener("click", function() { window.addonscriptobject.greetme(); }, false); cloning objects that contain dom elements by default, if the object you clone contains objects that are reflected from c++, such as dom elements, the cloning operation will fail with an error.

imgIContainer
create a new imgcontainer that contains only a single frame, which itself contains a subregion of the current frame.
... return value missing description exceptions thrown missing exception missing description native code only!extractframe create a new imgcontainer that contains only a single frame, which itself contains a subregion of the given frame.

inIDOMUtils
isignorablewhitespace() determines if the specified text node contains only ignorable whitespace characters.
... return value true if the node only contains insignificant whitespace.

nsIAccessible
contains the sum of what's needed to support iaccessible as well as atk's generic accessibility objects.
... getchildatpoint this method returns an accessible child which contains the coordinate at (x, y) in screen pixels.

nsICookieManager2
the nsicookiemanager2 interface contains additional methods that expand upon the nsicookiemanager interface.
...if the database contains any cookies that are the same as those being imported (that is, they have the same domain, name, and path), they are replaced with the ones being imported.

nsIDOMMozNetworkStatsManager
it contains the following fields: starttime a date object representing the start time.
...it contains the following fields: appmanifesturl a string used to filter network stats by app.

nsIDOMWindowUtils
keep in mind that during a restyle operation, an element may be restyled multiple times (for example, when an inline element contains blocks).
... will be called on the widget that contains aelement.

nsIFeedTextConstruct
method overview nsidomdocumentfragment createdocumentfragment(in nsidomelement element); astring plaintext(); attributes attribute type description base nsiuri if the text construct contains html or xhtml, relative references in the content should be resolved against this base uri.
... methods createdocumentfragment() creates a new document fragment on a given dom element, containing the text and (if the text construct contains html or xhtml) its markup.

nsIIdleService
the data parameter for the notification contains the current user idle time in gecko 15 and earlier or 0 in gecko 16 and later.
...the data parameter for the notification contains the current user idle time.

nsIInputStream
nsresult consumestream(nsiinputstream* astream) { nsresult rv; uint32_t numread; char buf[512]; while (1) { rv = astream->read(buf, sizeof(buf), &numread); if (ns_failed(rv)) { printf("### error reading stream: %x\n", rv); break; } if (numread == 0) break; // buf now contains numread bytes of data } return rv; } consume all data from an input stream using readsegments().
... static ns_method appendsegment(nsiinputstream* astream, void* aclosure, const char* afromsegment, uint32_t atooffset, uint32_t acount, uint32_t* awritecount) { // afromsegment now contains acount bytes of data.

nsIMemoryReporter
units_count_cumulative 2 the amount contains the number of times some event has occurred since the application started up.
... units_percentage 3 the amount contains a fraction that should be expressed as a percentage.

nsIProfile
void getprofilelist( out unsigned long length, [retval, array, size_is(length)] out wstring profilenames ); parameters length on return, contains the number of profiles in the profilenames array.
... profilenames on return, contains an array of all of the available profiles' names.

nsISound
event_select_dialog_open 4 a select dialog (one that contains a list box) is opened.
... _moz_selectdialog the system sound when a select dialog (one that contains a list box) is opened.

nsITaggingService
length optional on return, contains the number of tags returned in atags.
... atags on return, contains an array of tags for the specified uri.

nsIUpdate
this object also contains information about the update that the front end and other application services can use to learn more about what is going on.
... licenseurl astring the url to an html fragment that contains a license for the update.

nsIVariant
useful in case the string contains embedded null characters.
...useful in case the string contains embedded null characters.

XUL Overlays
the chrome registry, which is a special rdf datasource into which user-specific information is persisted, or stored, contains information about the components or additional packages that have been installed with the browser.
...in the base file, the html image element points to a netscape gif icon: <html:img id="foo" src="netscapeimage.gif"/> in the overlay, an element with the same id attribute specifies a different image, and that image is superimposed on top of the original netscape image as part of the merge process: <html:img id="foo" src="mozillaimage.gif"/> when the base file references an overlay file which contains the html image element above, the new src attribute is superimposed over the original, and the mozilla icon replaces the netscape icon.

Main Windows
the third is the attachment box which can be toggled into a slim or an expanded view basemenuoverlay.xul contains the contents of most of the menus (i.e.
...the third is the attachment box which can be toggled into a slim or an expanded view basemenuoverlay.xul contains the contents of most of the menus (i.e.

WebIDL bindings
this maybe<> object contains the principal only on the main thread; when the method is called on a worker thread, the value of the object will be nothing().
... this annotation includes the full, namespace-qualified name of the class that contains an implementation of the named method.

CData
if the 8-bit string contains invalid encoded character, a typeerror exception is thrown.
... if the 8-bit string contains invalid encoded character, no exception is thrown.

Plug-in Basics - Plugins
when the user opens a page that contains embedded data of a media type that invokes a plug-in, the browser responds with the following sequence of actions: check for a plug-in with a matching mime type load the plug-in code into memory initialize the plug-in create a new instance of the plug-in gecko can load multiple instances of the same plug-in on a single page, or in several open windows at the same time.
... gecko loads an embedded plug-in when the user displays an html page that contains an embedded object whose mime type is registered by a plug-in.

Debugger.Source - Firefox Developer Tools
if a single piece of source code contains both top-level code and function definitions, perhaps with nested functions, then the debugger.script instances for those all refer to the same debugger.source instance.
... binary if the instance refers to webassembly code and the debugger has the allowwasmbinarysource property set, a uint8array that contains the webassembly bytecode.

Debugger.Object - Firefox Developer Tools
codeis interpreted as strict mode code when it contains a use strict directive.
... note that, like evalinglobal, if the code passed to evalinglobalwithbindings is not strict mode code, then any declarations it contains affect the referent global object, even ascode is evaluated in an environment extended according tobindings.

Network request details - Firefox Developer Tools
in the above screenshot for example, the highlighted request's server-timing header contains 4 items — data, markup, total, and miss.
...this contains details about the secure connection used including the protocol, the cipher suite, and certificate details: the security tab shows a warning for security weaknesses.

Examine and edit HTML - Firefox Developer Tools
if a shadow dom contains a "slotted" element (an element with a slot attribute after it has been inserted inside a <slot> element — see adding flexibility with slots for an explanation of how these are used), the "slotted" element will be shown inside its corresponding <slot> element, with a "reveal" link alongside it.
...the menu contains the following items — click on the links to find the description of each command in the context menu reference: edit as html create new node duplicate node delete node attributes add attribute copy attribute value edit attribute remove attribute break on ...

CSS Grid Inspector: Examine grid layouts - Firefox Developer Tools
grid options the grid section of the layout view looks like this: you'll see a number of options contained within: overlay grid: contains a checkbox for each grid present on the page, along with various options.
... inspecting a subgrid when the page contains a grid with a subgrid, the entry for the subgrid is indented under its parent in the overlay grid section.

Work with animations - Firefox Developer Tools
the box below contains a grayscale icon, representing firefox developer edition.
...the bar is: blue if a transition was used to animate a property orange if a @keyframes animation was used green if the web animations api was used the bar contains a lightning bolt icon if the property was animated using the compositor thread (see more about the cost of animating different css properties).

UI Tour - Firefox Developer Tools
the performance tool's ui consists of 4 main pieces: toolbar recordings pane recording overview details pane, which may contain any one of: waterfall call tree flame chart toolbar the toolbar contains buttons to: start and stop a recording import a recording you previously saved clear the recordings pane.
... it contains two elements: an overview of the waterfall and a frame rate graph.

Style Editor - Firefox Developer Tools
the media sidebar the style editor displays a sidebar on the right-hand side whenever the current sheet contains any @media rules.
... the media sidebar works especially well with responsive design view for creating and debugging responsive layouts: from firefox 46 onwards, if an @media rule contains a screen size in a condition, then it is made clickable: clicking it then resizes the screen to that size using the responsive design view: creating and importing style sheets you can create a new style sheet by clicking the new button in the toolbar.

Firefox Developer Tools
this section contains detailed guides to all of the tools as well as information on how to debug firefox for android, how to extend devtools, and how to debug the browser as a whole.
... the ellipsis menu on the right-hand side of developer tools contains several commands that let you perform actions or change tool settings.

AesGcmParams - Web APIs
the aes-gcm specification recommends that the iv should be 96 bits long, and typically contains bits from a random number generator.
...this contains additional data that will not be encrypted but will be authenticated along with the encrypted data.

AudioBuffer - Web APIs
the buffer contains data in the following format: non-interleaved ieee754 32-bit linear pcm with a nominal range between -1 and +1, that is, 32bits floating point buffer, with each samples between -1.0 and 1.0.
...webkitaudiocontext)(); // create an empty three-second stereo buffer at the sample rate of the audiocontext var myarraybuffer = audioctx.createbuffer(2, audioctx.samplerate * 3, audioctx.samplerate); // fill the buffer with white noise; // just random values between -1.0 and 1.0 for (var channel = 0; channel < myarraybuffer.numberofchannels; channel++) { // this gives us the actual array that contains the data var nowbuffering = myarraybuffer.getchanneldata(channel); for (var i = 0; i < myarraybuffer.length; i++) { // math.random() is in [0; 1.0] // audio needs to be in [-1.0; 1.0] nowbuffering[i] = math.random() * 2 - 1; } } // get an audiobuffersourcenode.

AudioBufferSourceNode.buffer - Web APIs
syntax audiobuffersourcenode.buffer = soundbuffer; value an audiobuffer which contains the data representing the sound which the node will play.
... var myarraybuffer = audioctx.createbuffer(2, framecount, audioctx.samplerate); button.onclick = function() { // fill the buffer with white noise; //just random values between -1.0 and 1.0 for (var channel = 0; channel < channels; channel++) { // this gives us the actual arraybuffer that contains the data var nowbuffering = myarraybuffer.getchanneldata(channel); for (var i = 0; i < framecount; i++) { // math.random() is in [0; 1.0] // audio needs to be in [-1.0; 1.0] nowbuffering[i] = math.random() * 2 - 1; } } // get an audiobuffersourcenode.

AudioBufferSourceNode - Web APIs
if there's no buffer set—that is, if buffer is null—the output contains a single channel of silence (every sample is 0).
...taudiocontext)(); // create an empty three-second stereo buffer at the sample rate of the audiocontext var myarraybuffer = audioctx.createbuffer(2, audioctx.samplerate * 3, audioctx.samplerate); // fill the buffer with white noise; //just random values between -1.0 and 1.0 for (var channel = 0; channel < myarraybuffer.numberofchannels; channel++) { // this gives us the actual arraybuffer that contains the data var nowbuffering = myarraybuffer.getchanneldata(channel); for (var i = 0; i < myarraybuffer.length; i++) { // math.random() is in [0; 1.0] // audio needs to be in [-1.0; 1.0] nowbuffering[i] = math.random() * 2 - 1; } } // get an audiobuffersourcenode.

AuthenticatorAttestationResponse.attestationObject - Web APIs
when used in attestation, it contains an optional field, attestedcredentialdata.
...the attestedcredentialdata field contains the credentialid and credentialpublickey.

BasicCardRequest.supportedNetworks - Web APIs
the supportednetworks property of the basiccardrequest dictionary contains an array of domstrings representing the card networks that the retailer supports (e.g.
...legal values are defined in the w3c's document card network identifiers approved for use with payment request api, and are currently: amex cartebancaire diners discover jcb mastercard mir unionpay visa example the following example shows a sample definition of the first parameter of the paymentrequest() constructor, the data property of which contains supportednetworks and supportedtypes properties.

Blob.slice() - Web APIs
the blob interface's slice() method creates and returns a new blob object which contains data from a subset of the blob on which it's called.
...if you specify a value for start that is larger than the size of the source blob, the returned blob has size 0 and contains no data.

CSSUnparsedValue - Web APIs
cssunparsedvalue.keys() returns a new array iterator object that contains the keys for each index in the cssunparsedvalue object.
... cssunparsedvalue.values() returns a new array iterator object that contains the values for each index in the cssunparsedvalue object.

CredentialsContainer.create() - Web APIs
syntax var promise = credentialscontainer.create([options]) parameters options an object of type credentialcreationoptions that contains options for the requested new credentials object.
...contains requirements for creating/obtaining federated credentials.

DOMError - Web APIs
the domerror interface describes an error object that contains an error name.
... invalidcharactererror the string contains invalid characters.

DOMMatrixReadOnly - Web APIs
dommatrixreadonly.tostring() creates and returns a domstring object which contains a string representation of the matrix in css matrix syntax, using the appropriate css matrix notation.
... for a 3d matrix, the returned string contains all 16 elements and takes the form matrix3d(m11, m12, m13, m14, m21, m22, m23, m24, m31, m32, m33, m34, m41, m42, m43, m44).

DOMStringList - Web APIs
a type returned by some apis which contains a list of domstring (strings).
... domstringlist.contains() returns boolean indicating if the given string is in the list specifications specification status comment html living standardthe definition of 'domstringlist' in that specification.

Detecting device orientation - Web APIs
the orientation event contains four values: deviceorientationevent.absolute deviceorientationevent.alpha deviceorientationevent.beta deviceorientationevent.gamma the event handler function can look something like this: function handleorientation(event) { var absolute = event.absolute; var alpha = event.alpha; var beta = event.beta; var gamma = event.gamma; // do stuff with the new orientation data...
... the motion event contains four properties: devicemotionevent.acceleration devicemotionevent.accelerationincludinggravity devicemotionevent.rotationrate devicemotionevent.interval motion values explained the devicemotionevent objects provide web developers with information about the speed of changes for the device's position and orientation.

Document.title - Web APIs
if the title was overridden by setting document.title, it contains that value.
... otherwise, it contains the title specified in the markup (see the notes below).

EXT_texture_compression_bptc - Web APIs
it only contains rgb data, so the returned alpha value is 1.0.
...it only contains rgb data, so the returned alpha value is 1.0.

EventTarget.addEventListener() - Web APIs
ick', this, false); element.addeventlistener('dblclick', this, false); // you can properly remove the listeners element.removeeventlistener('click', this, false); element.removeeventlistener('dblclick', this, false); } const s = new something(document.body); another way of handling the reference to this is to pass to the eventlistener a function that calls the method of the object that contains the fields that need to be accessed: class someclass { constructor() { this.name = 'something good'; } register() { const that = this; window.addeventlistener('keydown', function(e) { that.somemethod(e); }); } somemethod(e) { console.log(this.name); switch(e.keycode) { case 5: // some code here...
... getting data into an event listener using the outer scope property when an outer scope contains a variable declaration (with const, let), all the inner functions declared in that scope have access to that variable (look here for information on outer/inner functions, and here for information on variable scope).

GeolocationPosition.coords - Web APIs
it contains the location, that is longitude and latitude on the earth, the altitude, and the speed of the object concerned, regrouped inside the returned value.
... it also contains accuracy information about these values.

HTMLImageElement.alt - Web APIs
syntax htmlimageelement.alt = alttext; let alttext = htmlimageelement.alt; value a domstring which contains the alternate text to display when the image is not loaded or for use by assistive devices.
...="songs.html" aria-role="button"><img src="songicon.svg" alt="songs"</a> <a href="albums.html" aria-role="button"><img src="albumicon.svg" alt="albums"</a> <a href="artists.html" aria-role="button"><img src="artisticon.svg" alt="artists"</a> <a href="playlists.html" aria-role="button"><img src="playlisticon.svg" alt="playlists"</a> </li> images containining diagrams or maps when an image contains information presented as a diagram, chart, graph, or map, the alt text should provide the same information, at least in summary form.

HTMLOptionElement - Web APIs
htmloptionelement.defaultselected is a boolean that contains the initial value of the selected html attribute, indicating whether the option is selected by default or not.
... htmloptionelement.text is a domstring that contains the text content of the element.

HTMLTextAreaElement - Web APIs
if no text is selected, contains the index of the character that follows the input cursor.
...if no text is selected, contains the index of the character that follows the input cursor.

In depth: Microtasks and the JavaScript runtime environment - Web APIs
ing; let language = userlanguages[user]; switch(language) { case "es": greeting = `¡hola, ${user}!`; break; case "en": default: greeting = `hello, ${user}!`; break; } return greeting; } outputelem.innerhtml += localgreeting(user) + "<br>\r"; } greetuser("mike"); greetuser("teresa"); greetuser("veronica"); this short program contains three execution contexts, some of which are created and destroyed several times over the course of the program's execution.
... if a window is actually a container within an <iframe>, it likely shares an event loop with the window that contains it.

Drag Operations - Web APIs
the drag data contains two pieces of information, the type (or format) of the data, and the data's value.
...if the drag contains no drag data items, or all of the items have been subsequently cleared, then no drag will occur.

Working with the History API - Web APIs
whenever the user navigates to the new state, a popstate event is fired, and the state property of the event contains a copy of the history entry's state object.
...if the history entry being activated was created by a call to pushstate or affected by a call to replacestate, the popstate event's state property contains a copy of the history entry's state object.

IDBEnvironment - Web APIs
the idbenvironment helper of the indexeddb api contains the indexeddb property, which provides access to indexeddb functionality.
... properties idbenvironment.indexeddb read only provides a mechanism for applications to asynchronously access capabilities of indexed databases; contains an idbfactory object.

IntersectionObserverEntry.boundingClientRect - Web APIs
the intersectionobserverentry interface's read-only boundingclientrect property returns a domrectreadonly which in essence describes a rectangle describing the smallest rectangle that contains the entire target element.
... syntax var boundsrect = intersectionobserverentry.boundingclientrect; value a domrectreadonly which describes the smallest rectangle that contains every part of the target element whose intersection change is being described.

KeyboardLayoutMap - Web APIs
keyboardlayoutmap.keys read only returns a new array iterator object that contains the keys for each index in the array.
... keyboardlayoutmap.values read only returns a new array iterator object that contains the values for each index in the keyboardlayoutmap object.

MediaCapabilitiesInfo - Web APIs
properties the mediacapabilitiesinfo interface contains three boolean attribues: supported: given the properties defined in the mediaconfiguration, can the specified piece of media content be encoded (if mediaencodingconfiguration is set) or decode (if mediadecodingconfiguration is set) at all?
... example // mediaconfiguration to be tested const mediaconfig = { type : 'file', audio : { contenttype : "audio/ogg", channels : 2, bitrate : 132700, samplerate : 5200 }, }; // check support and performance navigator.mediacapabilities.decodinginfo(mediaconfig).then(result => { // result contains the media capabilities information console.log('this configuration is ' + (result.supported ?

MediaElementAudioSourceNode.mediaElement - Web APIs
the mediaelementaudiosourcenode interface's read-only mediaelement property indicates the htmlmediaelement that contains the audio track from which the node is receiving audio.
... syntax audiosourceelement = mediaelementaudiosourcenode.mediaelement; value an htmlmediaelement representing the element which contains the source of audio for the node.

MediaKeySession - Web APIs
mediakeysession.keystatuses read only contains a reference to a read-only mediakeystatusmap of the current session's keys and their statuses.
... mediakeysession.sessionid read only contains a unique string generated by the cdm for the current media object and its associated keys or licenses.

MediaRecorder - Web APIs
the event, of type blobevent, contains the recorded media in its data property.
...the received event is based on the mediarecordererrorevent interface, whose error property contains a domexception that describes the actual error that occurred.

MediaStream.clone() - Web APIs
this new mediastream object has a new unique id and contains clones of every mediastreamtrack contained by the mediastream on which clone() was called.
... return value a new mediastream instance which has a new unique id and contains clones of every mediastreamtrack contained by the mediastream on which clone() was called.

MediaStreamAudioSourceNode.mediaStream - Web APIs
the mediastreamaudiosourcenode interface's read-only mediastream property indicates the mediastream that contains the audio track from which the node is receiving audio.
... syntax audiosourcestream = mediastreamaudiosourcenode.mediastream; value a mediastream representing the stream which contains the mediastreamtrack serving as the source of audio for the node.

MediaTrackSettings.logicalSurface - Web APIs
the most common scenario in which a display surface may be a logical one is if the selected surface contains the entire content area of a window which is too large to display onscreen at once.
... since the window that contains the surface has to be scrolled to show the rest of the contents, the surface is a logical one.

Media Source API - Web APIs
videoplaybackquality contains information about the quality of video being played by a <video> element, such as number of dropped or corrupted frames.
... htmlmediaelement.seekable when a mediasource object is played by an html media element, this property will return a timeranges object that contains the time ranges that the user is able to seek to.

NameList - Web APIs
properties namelist.length read only methods namelist.contains() returns a boolean.
... namelist.containsns() returns a boolean.

Node.compareDocumentPosition() - Web APIs
the return value is a bitmask of the following values: name value document_position_disconnected 1 document_position_preceding 2 document_position_following 4 document_position_contains 8 document_position_contained_by 16 document_position_implementation_specific 32 syntax comparemask = node.comparedocumentposition(othernode) parameters othernode the other node with which to compare the first node’s document position.
...for example, if othernode is located earlier in the document and contains the node on which comparedocumentposition() was called, then both the document_position_contains and document_position_preceding bits would be set, producing a value of 10 (0x0a).

Path2D.addPath() - Web APIs
html <canvas id="canvas"></canvas> javascript first, we create two separate path2d objects, each of which contains a rectangle made using the rect() method.
...finally, we draw the first path (which now contains both rectangles) using fill().

PaymentAddress.country - Web APIs
syntax var paymentcountry = paymentaddress.country; value a domstring which contains the iso3166-1 alpha-2 code identifying the country in which the address is located, or an empty string if no country is available, which frequently can be assumed to mean "same country as the site owner." usage notes if the payment handler validates the address and determines that the value of country is invalid, a call to paymentrequestupdateevent.updatewith() will be made with a details object containing a shippingaddresserrors field.
... that field contains an addresserrors-compliant object whose country property is a string indicating the validation error that occurred and, if possible, suggests how to fix it.

PaymentAddress - Web APIs
paymentaddress.city read only a domstring which contains the city or town portion of the address.
... the first of these three (supportedinstruments in the example below) contains a data property that has to conform to the structure defined by the basiccardrequest dictionary.

PaymentDetailsUpdate.shippingAddressErrors - Web APIs
the paymentdetailsupdate dictionary's shippingaddresserrors property, if present, contains an addresserrors object whose contents provide error messages for one or more of the values in the paymentaddress specified as paymentrequest.shippingaddress.
... syntax var addresserrors = paymentdetailsupdate.shippingaddresserrors; value an addresserrors object, which contains domstrings describing errors in the properties of a paymentaddress.

PaymentRequest.show() - Web APIs
e = await payrequest.show(); await validateresponse(response); } catch(err) { /* handle the error; aborterror usually means a user cancellation */ } } in this code, the methods checkaddress() and checkshipping(), respectively, check the shipping address and the shipping option changes and supply in response either a paymentdetailsupdate object or a promise to return one; this object contains the fields in the paymentresponse which have been or need to be changed.
... // paymentresponse.methodname contains the selected payment method // paymentresponse.details contains a payment method specific response await response.complete("success"); } catch (err) { console.error("uh oh, something bad happened", err.message); } } the following example shows how to update the payment sheet as it's being presented to the end-user.

Using Performance Timeline - Web APIs
when the observer (callback) is invoked the callback's parameters include a performance observer entry list that only contains observed performance entries.
... that is, the list only contains entries for the event types that were specified when the observer's observe() method was invoked.

Performance Timeline - Web APIs
when the observer (callback) is invoked, the callback's parameters include a performance observer entry list that contains only observed performance entries.
... that is, the list contains entries only for the event types that were specified when the observer's observe() method was invoked.

Using the Permissions API - Web APIs
this object will eventually include methods for querying, requesting, and revoking permissions, although currently it only contains permissions.query(); see below.
... } else if (result.state == 'denied') { report(result.state); geobtn.style.display = 'inline'; } result.onchange = function() { report(result.state); } }); } function report(state) { console.log('permission ' + state); } handlepermission(); permission descriptors the permissions.query() method takes a permissiondescriptor dictionary as a parameter — this contains the name of the api you are interested in.

Pointer Lock API - Web APIs
this is a simple event and contains no extra data.
...this is a simple event and contains no extra data.

PublicKeyCredential.getClientExtensionResults() - Web APIs
getclientextensionresults() is a method of the publickeycredential interface that returns an arraybuffer which contains a map between the extensions identifiers and their results after having being processed by the client.
...this object contains a map between the extensions' identifiers and their results from the processing.

Push API - Web APIs
it contains information sent from an application to a pushsubscription.
...when a push service sets an expiration time.) examples mozilla's serviceworker cookbook contains many useful push examples.

RTCPeerConnection - Web APIs
if it has not yet been set, this is null.peeridentity read only the read-only rtcpeerconnection property peeridentity returns a javascript promise that resolves to an rtcidentityassertion which contains a domstring identifying the remote peer.pendinglocaldescription read only the read-only property rtcpeerconnection.pendinglocaldescription returns an rtcsessiondescription object describing a pending configuration change for the local end of the connection.
...the answer contains information about any media already attached to the session, codecs and options supported by the browser, and any ice candidates already gathered.

RTCRemoteOutboundRtpStreamStats.localId - Web APIs
the findreportentry() function shown below examines an rtcstatsreport, returning the rtcstats-based statistics record which contains the specified key — and for which the key has the specified value.
...the box contains a number of log entries, the last handful of which are visible.

RTCRtpCapabilities - Web APIs
an rtcrtpcapabilities object contains an array of objects conforming to rtcrtpcodeccapability (each describing the capabilities of one codec) and an array of the supported rtp header extensions for that codec.
...each object contains a single domstring, uri, specifying the uri of the header extension, as described in rfc 5285.

RTCRtpReceiver - Web APIs
rtcrtpreceiver.getparameters() returns an rtcrtpparameters object which contains information about how the rtc data is to be decoded.
... rtcrtpreceiver.getstats() returns a promise whose fulfillment handler receives a rtcstatsreport which contains statistics about the incoming streams and their dependencies.

RTCRtpStreamStats.kind - Web APIs
the kind property of the rtcrtpstreamstats dictionary is a string indicating whether the described rtp stream contains audio or video media.
... syntax mediakind = rtcrtpstreamstats.kind; value a domstring whose value is "audio" if the track whose statistics are given by the rtcrtpstreamstats object contains audio, or "video" if the track contains video media.

Range.setStart() - Web APIs
the address contains nine nodes: five text nodes, and four <br> elements.
...the resulting range contains the first through fifth characters within a text node.

Report - Web APIs
this contains the list of reports currently contained in the observer's report queue.
...ode); let innerlist = document.createelement('ul'); listitem.appendchild(innerlist); list.appendchild(listitem); for (let key in reports[i].body) { let innerlistitem = document.createelement('li'); let keyvalue = reports[i].body[key]; innerlistitem.textcontent = key + ': ' + keyvalue; innerlist.appendchild(innerlistitem); } } } the reports parameter contains an array of all the reports in the observer's report queue.

SVGAnimatedBoolean - Web APIs
animval boolean if the given attribute or property is being animated, contains the current animated value of the attribute or property.
... if the given attribute or property is not currently being animated, contains the same value as baseval.

SVGAnimatedEnumeration - Web APIs
animval unsigned short if the given attribute or property is being animated, contains the current animated value of the attribute or property.
... if the given attribute or property is not currently being animated, contains the same value as baseval.

SVGAnimatedInteger - Web APIs
animval long if the given attribute or property is being animated, contains the current animated value of the attribute or property.
... if the given attribute or property is not currently being animated, contains the same value as baseval.

SVGAnimatedLength - Web APIs
animval svglength if the given attribute or property is being animated, contains the current animated value of the attribute or property.
... if the given attribute or property is not currently being animated, contains the same value as baseval.

SVGAnimatedNumber - Web APIs
animval float if the given attribute or property is being animated, contains the current animated value of the attribute or property.
... if the given attribute or property is not currently being animated, contains the same value as baseval.

SVGAnimatedPoints - Web APIs
if the given attribute or property is being animated, contains the current animated value of the attribute or property.
... if the given attribute or property is not currently being animated, contains the same value as points.

SVGAnimatedString - Web APIs
if the given attribute or property is being animated it contains the current animated value of the attribute or property.
... if the given attribute or property is not currently being animated, it contains the same value as baseval.

SVGFilterElement - Web APIs
svgfilterelement.filterresx read only an svganimatedinteger that contains the x component of the filterres attribute of the given <filter> element.
... svgfilterelement.filterresy read only an svganimatedinteger that contains the y component of the filterres attribute of the given <filter> element.

Using the Screen Capture API - Web APIs
using the captured stream the promise returned by getdisplaymedia() resolves to a mediastream that contains at least one video stream that contains the screen or screen area, and which is adjusted or filtered based upon the constraints specifed when getdisplaymedia() was called.
... the object displaymediaoptions contains the mediastreamconstraints to pass into getdisplaymedia(); here, the cursor property is set to always, indicating that the mouse cursor should always be included in the captured media.

ScriptProcessorNode - Web APIs
an event, implementing the audioprocessingevent interface, is sent to the object each time the input buffer contains new data, and the event handler terminates when it has filled the output buffer with data.
...ion(buffer) { mybuffer = buffer; source.buffer = mybuffer; }, function(e){"error with decoding audio data" + e.err}); } request.send(); } // give the node a function to process audio events scriptnode.onaudioprocess = function(audioprocessingevent) { // the input buffer is the song we loaded earlier var inputbuffer = audioprocessingevent.inputbuffer; // the output buffer contains the samples that will be modified and played var outputbuffer = audioprocessingevent.outputbuffer; // loop through the output channels (in this case there is only one) for (var channel = 0; channel < outputbuffer.numberofchannels; channel++) { var inputdata = inputbuffer.getchanneldata(channel); var outputdata = outputbuffer.getchanneldata(channel); // loop through the 4096 sa...

Using server-sent events - Web APIs
the second message contains a data field with the value "some text".
... the third message contains a data field with the value "another message\nwith two lines".

SpeechRecognition.onresult - Web APIs
recognition.onresult = function(event) { // the speechrecognitionevent results property returns a speechrecognitionresultlist object // the speechrecognitionresultlist object contains speechrecognitionresult objects.
... // each speechrecognitionresult object contains speechrecognitionalternative objects that contain individual results.

SpeechRecognitionAlternative.confidence - Web APIs
recognition.onresult = function(event) { // the speechrecognitionevent results property returns a speechrecognitionresultlist object // the speechrecognitionresultlist object contains speechrecognitionresult objects.
... // each speechrecognitionresult object contains speechrecognitionalternative objects that contain individual results.

SpeechRecognitionAlternative.transcript - Web APIs
recognition.onresult = function(event) { // the speechrecognitionevent results property returns a speechrecognitionresultlist object // the speechrecognitionresultlist object contains speechrecognitionresult objects.
... // each speechrecognitionresult object contains speechrecognitionalternative objects that contain individual results.

SpeechRecognitionAlternative - Web APIs
recognition.onresult = function(event) { // the speechrecognitionevent results property returns a speechrecognitionresultlist object // the speechrecognitionresultlist object contains speechrecognitionresult objects.
... // each speechrecognitionresult object contains speechrecognitionalternative objects that contain individual results.

SpeechRecognitionEvent.results - Web APIs
recognition.onresult = function(event) { // the speechrecognitionevent results property returns a speechrecognitionresultlist object // the speechrecognitionresultlist object contains speechrecognitionresult objects.
... // each speechrecognitionresult object contains speechrecognitionalternative objects that contain individual results.

SpeechRecognitionResult.isFinal - Web APIs
examples recognition.onresult = function(event) { // the speechrecognitionevent results property returns a speechrecognitionresultlist object // the speechrecognitionresultlist object contains speechrecognitionresult objects.
... // each speechrecognitionresult object contains speechrecognitionalternative objects that contain individual results.