Experimental features in Firefox
see bug 1565562 for more details.
...see bug 1506289 for more details.
... nightly 62 no developer edition 62 no beta 62 no release 62 no preference name media.mediasource.experimental.enabled avif (av1 image file format) support with this feature enabled, firefox supports the av1 image file (avif) format.
...And 3 more matches

Localization and Plurals
5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, … everything else: 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, … plural rule #6 (3 forms) families: baltic (lithuanian) ends in 1, excluding 11: 1, 21, 31, 41, 51, 61, 71, 81, 91, 101, 121, 131, 141, 151, 161, 171, 181, 191, 201, 221, 231, 241, 251, 261, 271, 281, 291, … ends in 0 or ends in 11-19: 0, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 111, 112, 113, 114, 115, 116, 117, 118, ...
...119, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, … everything else: 2, 3, 4, 5, 6, 7, 8, 9, 22, 23, 24, 25, 26, 27, 28, 29, 32, 33, 34, 35, 36, 37, 38, 39, 42, 43, 44, 45, 46, 47, 48, 49, 52, 53, 54, 55, 56, 57, 58, 59, 62, 63, 64, 65, 66, 67, 68, 69, 72, 73, … plural rule #7 (3 forms) families: belarusian, russian, ukrainian ends in 1, excluding 11: 1, 21, 31, 41, 51, 61, 71, 81, 91, 101, 121, 131, 141, 151, 161, 171, 181, 191, 201, 221, 231, 241, 251, 261, 271, 281, 291, … ends in 2-4, excluding 12-14: 2, 3, 4, 22, 23, 24, 32, 33, 34, 42, 43, 44, 52, 53, 54, 62, 63, 64, 72, 73, 74, 82, 83, 84, 92, 93, 94, 102, 103, 104, 122, 123, 124, 132, 133, 134, 142, 143, 144, 152, 153, 154, 162, 163, 164, 172, 173, 174, 182, 183, … ...
... czech) is 1: 1 is 2-4: 2, 3, 4 everything else: 0, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, … plural rule #9 (3 forms) families: slavic (polish) is 1: 1 ends in 2-4, excluding 12-14: 2, 3, 4, 22, 23, 24, 32, 33, 34, 42, 43, 44, 52, 53, 54, 62, 63, 64, 72, 73, 74, 82, 83, 84, 92, 93, 94, 102, 103, 104, 122, 123, 124, 132, 133, 134, 142, 143, 144, 152, 153, 154, 162, 163, 164, 172, 173, 174, 182, 183, … everything else: 0, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 25, 26, 27, 28, 29, 30, 31, 35, 36, 37, 38, 39, 40, 41, 45, 46, 47, 48, 49, 50, 51, 55, 56, 57, 58, 59, 60, 61, 65, 66, 67, 68, … plural rule #10 (4...
...And 3 more matches

Index
62 nss 3.19 release notes the nss team has released network security services (nss) 3.19, which is a minor security release.
... 162 nss code coverage nss no summary!
...id encryption algorithm: pkcs #12 v2 pbe with sha-1 and 3key triple des-cbc parameters: salt: 45:2e:6a:a0:03:4d:7b:a1:63:3c:15:ea:67:37:62:1f iteration count: 1 (0x1) certificate: data: version: 3 (0x2) serial number: 13 (0xd) signature algorithm: pkcs #1 sha-1 with rsa encryption issuer: "e=personal-freemail@thawte.com,cn=thawte personal freemail c a,ou=certification services division,o=thawte consulting,l=cape t own,st=western cape,c=za" ....
...And 3 more matches

SubtleCrypto.unwrapKey() - Web APIs
*/ const saltbytes = [180,253,62,216,47,35,90,55,218,233,103,10,172,143,161,177]; /* iv that is to be used in decrypting the key to unwrap.
...*/ const wrappedkeybytes = [6,155,182,208,7,141,44,18,3,151,58,126,68,100,252, 225,241,11,25,201,153,171,102,174,150,29,62,195,110,138,106,109,14,6,108, 148,104,221,22,93,102,221,146,25,65,112,4,140,79,194,164,163,156,250,108, 11,14,220,78,194,161,17,14,57,121,70,13,28,220,210,78,32,46,217,36,165,220, 170,244,152,214,150,83,2,138,128,11,251,227,213,72,100,158,10,162,40,195, 60,248,77,37,156,34,10,213,171,67,147,73,231,31,63,80,176,103,206,187,164, 214,250,49,223,185,5,48,241,17,1,253,59,185,181,209,255,42,223,175,90,159, 174,169,205,156,120,195,1,135,165,226,46,119,27,97,183,23,197,227,85,138, 235,79,158,167,59,6...
...,251,137, 26,186,110,117,113,207,179,59,213,18,175,14,203,192,2,97,131,125,167,227, 182,87,72,123,54,156,60,195,88,224,96,46,126,245,251,247,147,110,147,173, 82,106,93,210,55,71,127,133,41,37,181,17,106,16,158,220,136,43,75,133,96, 240,151,116,40,44,254,2,32,74,226,193,172,48,211,71,109,163,143,30,92,28, 30,183,25,16,176,207,77,93,139,242,114,91,218,126,123,234,18,9,245,53,46, 172,215,62,92,249,191,17,27,0,58,151,33,23,169,93,177,253,152,147,198,196, 226,42,202,166,99,250,127,40,221,196,121,195,198,235,30,159,159,95,182,107, 175,137,177,49,72,63,131,162,198,186,22,255,230,237,195,56,147,177,101,52, 227,125,32,180,242,47,92,212,6,148,218,107,125,137,123,15,51,107,159,228, 238,212,60,54,184,48,110,248,252,208,46,23,149,78,169,201,68,242,193,251, 156,227,42,90,109,102,172,...
...And 3 more matches

Index - MDN Web Docs Glossary: Definitions of Web-related terms
62 call stack call stack, codingscripting, glossary, javascript a call stack is a mechanism for an interpreter (like the javascript interpreter in a web browser) to keep track of its place in a script that calls multiple functions — what function is currently being run and what functions are called from within that function, etc.
... 162 fuzz testing firefox, fuzzing, mozilla, qa, security, testing fuzzing is a technique for testing software using automated tools to provide invalid or unexpected input to a program or function in a program, then checking the results to see if the program crashes or otherwise acts inappropriately.
... 262 mathml codingscripting, glossary, mathml, mathematical markup language, xml mathml (an xml application) is an open standard for representing mathematical expressions in webpages.
...And 2 more matches

Array.from() - JavaScript
polyfill array.from() was added to the ecma-262 standard in the 6th edition (es2015).
... polyfill notes: this algorithm is exactly as specified in ecma-262 6th edition (assuming object and typeerror have their original values and that callback.call() evaluates to the original value of function.prototype.call()).
... in addition, since true iterables cannot be polyfilled, this implementation does not support generic iterables as defined in the 6th edition of ecma-262.
...And 2 more matches

WebAssembly.Global - JavaScript
desktopmobileserverchromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetnode.jsglobalchrome full support 69edge no support nofirefox full support 62ie no support noopera no support nosafari no support nowebview android full support 69chrome android full support 69firefox android full support ...
... 62opera android no support nosafari ios no support nosamsung internet android full support 10.0nodejs no support noglobal() constructorchrome full support 69edge no support nofirefox full support 62ie no support noopera no support nosafari no support nowebview android full support 69chrome a...
...ndroid full support 69firefox android full support 62opera android no support nosafari ios no support nosamsung internet android full support 10.0nodejs no support novaluechrome full support 69edge no support nofirefox full support 62ie no support noopera no support nosafari no support ...
...And 2 more matches

New in JavaScript 1.3 - Archive of obsolete content
the most significant change in javascript 1.3 was compliance with ecma-262 and unicode by removing inconsistencies between javascript 1.2 and the new ecma standard (which was published in june 1997).
... additional features of version 1.2, at the time not specified by ecma-262 were kept in the javascript language (see below for a list of differences).
... changed functionality in javascript 1.3 changes to date to conform with ecma-262 new constructor date(year, month, day, [,hours [, minutes [, seconds [, milliseconds ]]]]) additional method parameters: setmonth(month[, date]) sethours(hours[, min[, sec[, ms]]]) setminutes(min[, sec[, ms]]) setseconds(sec[, ms]) the length of an array (property length) is now an unsigned, 32-bit integer.
... non-ecma-262 features of javascript 1.3 the following is a comparison between the june 1998 version of ecma-262 and javascript 1.3.

Starting our Svelte Todo list app - Learn web development
replace the contents of the file public/global.css with the following: /* resets */ *, *::before, *::after { box-sizing: border-box; } *:focus { outline: 3px dashed #228bec; outline-offset: 0; } html { font: 62.5% / 1.15 sans-serif; } h1, h2 { margin-bottom: 0; } ul { list-style: none; padding: 0; } button { border: none; margin: 0; padding: 0; width: auto; overflow: visible; background: transparent; color: inherit; font: inherit; line-height: normal; -webkit-font-smoothing: inherit; -moz-osx-font-smoothing: inherit; -webkit-appearance: none; } button::-moz-focus-inner { ...
...border: 0; } button, input, optgroup, select, textarea { font-family: inherit; font-size: 100%; line-height: 1.15; margin: 0; } button, input { overflow: visible; } input[type="text"] { border-radius: 0; } body { width: 100%; max-width: 68rem; margin: 0 auto; font: 1.6rem/1.25 arial, sans-serif; background-color: #f5f5f5; color: #4d4d4d; } @media screen and (min-width: 620px) { body { font-size: 1.9rem; line-height: 1.31579; } } /*end resets*/ /* global styles */ .form-group > input[type="text"] { display: inline-block; margin-top: 0.4rem; } .btn { padding: 0.8rem 1rem 0.7rem; border: 0.2rem solid #4d4d4d; cursor: pointer; text-transform: capitalize; } .btn.toggle-btn { border-width: 1px; border-color: #d3d3d3; } .btn.toggle-btn[aria-press...
....01567; font-weight: 300; padding: 0.8rem; margin-bottom: 1rem; text-align: center; } .input__lg { padding: 2rem; border: 2px solid #000; } .input__lg:focus { border-color: #4d4d4d; box-shadow: inset 0 0 0 2px; } [class*="__lg"] { display: inline-block; width: 100%; font-size: 1.9rem; } [class*="__lg"]:not(:last-child) { margin-bottom: 1rem; } @media screen and (min-width: 620px) { [class*="__lg"] { font-size: 2.4rem; } } .filters { width: 100%; margin: unset auto; } /* todo item styles */ .todo { display: flex; flex-direction: row; flex-wrap: wrap; } .todo > * { flex: 0 0 100%; } .todo-text { width: 100%; min-height: 4.4rem; padding: 0.4rem 0.8rem; border: 2px solid #565656; } .todo-text:focus { box-shadow: inset 0 0 0 2px; } /* checkbox...
... repl to see the current state of the code in a repl, visit: https://svelte.dev/repl/c862d964d48d473ca63ab91709a0a5a0?version=3.23.2 summary with our markup and styling in place our todo list app is starting to take shape, and we have everything ready so that we can start to focus on the features we have to implement.

How to implement a custom autocomplete search component
const ci = components.interfaces; const cu = components.utils; cu.import('resource://gre/modules/xpcomutils.jsm'); const class_id = components.id('x753d830-ba1e-11e0-962b-0800200c9a66'); // ← change this const class_name = "basic autocomplete"; const contract_id = '@mozilla.org/autocomplete/search;1?name=basic-autocomplete'; /** * @constructor * * @implements {nsiautocompleteresult} * * @param {string} searchstring * @param {number} searchresult * @param {number} defaultindex * @param {string} errordescription * @param {array.<string>} results * @par...
...to do so put the following declaration in your chrome.manifest file: component {x753d830-ba1e-11e0-962b-0800200c9a66} components/basic_autocomplete.js contract @mozilla.org/autocomplete/search;1?name=basic-autocomplete {x753d830-ba1e-11e0-962b-0800200c9a66} and finally use this newly available component in a xul file like this: <textbox id="text1" type="autocomplete" autocompletesearch="basic-autocomplete"/> that's it!
... const ci = components.interfaces; const class_id = components.id("6224daa1-71x2-4d1a-ad90-01ca1c08e323"); // ← change this const class_name = "simple autocomplete"; const contract_id = "@mozilla.org/autocomplete/search;1?name=simple-autocomplete"; // implements nsiautocompleteresult function simpleautocompleteresult(searchstring, searchresult, defaultindex, errordescription, results, comments) ...
...es: add an nsgetfactory() function: function nsgetfactory(cid) { if (cid.tostring().touppercase() != class_id.tostring().touppercase()) { throw components.results.ns_error_factory_not_registered; } return simpleautocompletesearchfactory; } you need to explicitly register the component by adding these lines into your chrome.manifest file: component {6224daa1-71x2-4d1a-ad90-01ca1c08e323} components/.js contract @mozilla.org/autocomplete/search;1?name=simple-autocomplete {6224daa1-71x2-4d1a-ad90-01ca1c08e323} you need to add the following method: getlabelat: function(index) { return this._results[index]; } to simpleautocompleteresult use this newly available component in a xul file like this: <textbox id="t...

Mozilla MathML Status
see bug 534962.
...mathml is always enabled since bug 660762.
...see bug 534962.
...see bug 534962.

BloatView
== bloatview: all (cumulative) leak and bloat statistics, tab process 1862 |<----------------class--------------->|<-----bytes------>|<----objects---->| | | per-inst leaked| total rem| 0 |total | 17 2484|253953338 38| 17 |asynctransactiontrackersholder | 40 40| 10594 1| 78 |compositorchild | 472 472| ...
...name instance size bytes allocated bytes allocated but not freed blank mozilla yahoo netscape total blank mozilla yahoo netscape total total 1754408 432556 179828 404184 2770976 nsstr 20 6261600 3781900 1120920 1791340 12955760 222760 48760 13280 76160 360960 nshashkey 8 610568 1842400 2457872 1134592 6045432 32000 536 568 1216 34320 nstexttransformer 548 8220 469088 1414936 1532756 3425000 0 0 0 0 0 nsstylecontextdata 736 259808 ...
... 325312 489440 338560 1413120 141312 220800 -11040 94944 446016 nslinelayout 1100 2200 225500 402600 562100 1192400 0 0 0 0 0 nslocalfile 424 558832 19928 1696 1272 581728 72080 1272 424 -424 73352 the first set of columns, bytes allocated, shows the amount of memory allocated for the first log file (blank.txt), the difference between the first log file and the second (mozilla.txt), the difference between the second log file and the third (yahoo.txt), the difference between the third log file and the fourth (netscape.txt), and the total amount of memory allocated in the fourth log file.
...------------------ total 6113530 2.79% 67064808 9.18% stylecontextimpl 265440 81.19% 283584 -26.99% ctoken 236500 17.32% 306676 20.64% nsstr 217760 14.94% 5817060 7.63% nsxulattribute 113048 -70.92% 113568 -71.16% literalimpl 53280 26.62% 75840 19.40% nsxulelement 51648 0.00% 51648 0.00% nsprofile 51224 0.00% 51224 0.00% nsframe 47568 -26.15% 48096 -50.49% cssdeclarationimpl 42984 0.67% 43488 0.67% this "delta report" shows the leak offenders, sorted from most leaks to fewest.

NSS 3.47 release notes
notable changes in nss 3.47 bug 1152625 - support aes hw acceleration on armv8 bug 1267894 - allow per-socket run-time ordering of the cipher suites presented in clienthello bug 1570501 - add cmac to freebl and pkcs #11 libraries bugs fixed in nss 3.47 bug 1459141 - make softoken cbc padding removal constant time bug 1589120 - more cbc padding tests bug 1465613 - add ability to distrust certificates issued after a certain dat...
...e for a specified root cert bug 1588557 - bad debug statement in tls13con.c bug 1579060 - mozilla::pkix tag definitions for issueruniqueid and subjectuniqueid shouldn't have the constructed bit set bug 1583068 - nss 3.47 should pick up fix from bug 1575821 (nspr 4.23) bug 1152625 - support aes hw acceleration on armv8 bug 1549225 - disable dsa signature schemes for tls 1.3 bug 1586947 - pk11_importandreturnprivatekey does not store nickname for ec keys bug 1586456 - unnecessary conditional in pki3hack, pk11load and stanpcertdb bug 1576307 - check mechanism param and param length before casting to mechanism-specific structs bug 1577953 - support longer (up to rfc maximum) hkdf outputs bug 1508776 - remove refcounting from sftk_freesession (cve-2019-11756) bug 1494063 - support tls ...
...exporter in tstclnt and selfserv bug 1581024 - heap overflow in nss utility "derdump" bug 1582343 - soft token mac verification not constant time bug 1578238 - handle invald tag sizes for ckm_aes_gcm bug 1576295 - check all bounds when encrypting with seed_cbc bug 1580286 - nss rejects tls 1.2 records with large padding with sha384 hmac bug 1577448 - create additional nested s/mime test messages for thunderbird bug 1399095 - allow nss-try to be used to test nspr changes bug 1267894 - libssl should allow selecting the order of cipher suites in clienthello bug 1581507 - fix unportable grep expression in test scripts bug 1234830 - [cid 1242894][cid 1242852] unused values bug 1580126 - fix build failure on aarch64_be while building freebl/gcm bug 1385039 - build nspr tests as part of...
...gnature algorithms to known algorithms bug 1560329 - drbg: add continuous self-test on entropy source bug 1579290 - asan builds should disable lsan while building bug 1385061 - build nspr tests with nss make; add gyp parameters to build/run nspr tests bug 1577359 - build atob and btoa for thunderbird bug 1579036 - confusing error when trying to export non-existent cert with pk12util bug 1578626 - [cid 1453375] ub: decrement nullptr.

NSS 3.53 release notes
at that time, users will need to set the compile-time flag (bug 1622033) to disable that deprecation in order to use the algorithm.
...(bug 1618404, bug 1621159) if a builtin certificate has a cka_nss_server_distrust_after timestamp before the sct or notbefore date of a certificate that builtin issued, then clients can elect not to trust it.
... bugs fixed in nss 3.53 bug 1640260 - initialize pbe params (asan fix) bug 1618404 - set cka_nss_server_distrust_after for symantec root certs bug 1621159 - set cka_nss_server_distrust_after for consorci aoc, grca, and sk id root certs bug 1629414 - ppc64: correct compilation error between vmx vs.
... bug 1561331 - additional modular inverse test bug 1629553 - rework and cleanup gmake builds bug 1438431 - remove mkdepend and "depend" make target bug 290526 - support parallel building of nss when using the makefiles bug 1636206 - hacl* update after changes in libintvector.h bug 1636058 - fix building nss on debian s390x, mips64el, and riscv64 bug 1622033 - add option to build without seed this bugzilla query returns all the bugs fixed in ns...

nsIHttpChannelInternal
see bug 534698 and bug 526207.
...see bug 534698 and bug 526207.
...see bug 534698 and bug 526207.
...see bug 534698 and bug 526207.

XPCOM primitive
(however, if you are designing that kind of api today, you should probably use nsivariant instead.) idl data type interface component idl nsidptr nsisupportsid @mozilla.org/supports-id;1 [scriptable, uuid(d18290a0-4a1c-11d3-9890-006008962422)] interface nsisupportsid : nsisupportsprimitive { attribute nsidptr data; string tostring(); }; astring nsisupportsstring @mozilla.org/supports-string;1 [scriptable, uuid(d79dc970-4a1c-11d3-9890-006008962422)] interface nsisupportsstring : nsisupportsprimitive { attribute astring data; wstring tostring(); }; prbool nsisupportsprbool @mozilla.org/supports-prbool;1 [scriptab...
...le, uuid(ddc3b490-4a1c-11d3-9890-006008962422)] interface nsisupportsprbool : nsisupportsprimitive { attribute prbool data; string tostring(); }; pruint8 nsisupportspruint8 @mozilla.org/supports-pruint8;1 [scriptable, uuid(dec2e4e0-4a1c-11d3-9890-006008962422)] interface nsisupportspruint8 : nsisupportsprimitive { attribute pruint8 data; string tostring(); }; pruint16 nsisupportspruint16 @mozilla.org/supports-pruint16;1 [scriptable, uuid(dfacb090-4a1c-11d3-9890-006008962422)] interface nsisupportspruint16 : nsisupportsprimitive { attribute pruint16 data; string tostring(); }; pruint32 nsisupportspruint32 @mozilla.org/supports-pruint32;1 [scriptable, uuid(e01dc470-4a1c-11d3-9890-006008962422)] interface nsisupportspruint32 : nsisupportsprimitive { attribute p...
...ruint32 data; string tostring(); }; pruint64 nsisupportspruint64 @mozilla.org/supports-pruint64;1 [scriptable, uuid(e13567c0-4a1c-11d3-9890-006008962422)] interface nsisupportspruint64 : nsisupportsprimitive { attribute pruint64 data; string tostring(); }; prtime nsisupportsprtime @mozilla.org/supports-prtime;1 [scriptable, uuid(e2563630-4a1c-11d3-9890-006008962422)] interface nsisupportsprtime : nsisupportsprimitive { attribute prtime data; string tostring(); }; char nsisupportschar @mozilla.org/supports-char;1 [scriptable, uuid(e2b05e40-4a1c-11d3-9890-006008962422)] interface nsisupportschar : nsisupportsprimitive { attribute char data; string tostring(); }; print16 nsisupportsprint16 @mozilla.org/supports-print16;1 [scriptable, uuid(e30d94b0-4a1c-11d3-9...
...890-006008962422)] interface nsisupportsprint16 : nsisupportsprimitive { attribute print16 data; string tostring(); }; print32 nsisupportsprint32 @mozilla.org/supports-print32;1 [scriptable, uuid(e36c5250-4a1c-11d3-9890-006008962422)] interface nsisupportsprint32 : nsisupportsprimitive { attribute print32 data; string tostring(); }; print64 nsisupportsprint64 @mozilla.org/supports-print64;1 [scriptable, uuid(e3cb0ff0-4a1c-11d3-9890-006008962422)] interface nsisupportsprint64 : nsisupportsprimitive { attribute print64 data; string tostring(); }; float nsisupportsfloat @mozilla.org/supports-float;1 [scriptable, uuid(abeaa390-4ac0-11d3-baea-00805f8a5dd7)] interface nsisupportsfloat : nsisupportsprimitive { attribute float data; string tostring(); }; doubl...

KeyboardEvent: code values - Web APIs
a "unidentified" "" 0x005b "unidentified" "f13" 0x005c "unidentified" "f14" 0x005d "unidentified" "f15" 0x005e "unidentified" "" 0x005f "unidentified" "" 0x0060 "unidentified" "" 0x0061 "unidentified" "" 0x0062 "unidentified" "" 0x0063 "unidentified" "f16" 0x0064 "f13" "f17" 0x0065 "f14" "f18" 0x0066 "f15" "f19" 0x0067 "f16" "f20" 0x0068 "f17" "f21" 0x0069 "f18" "f22" 0x006a "f19" "f23" 0x006b "f20" "f24" 0x006c "f21" "" 0x...
..." kvk_ansi_keypad8 (0x5b) "numpad8" "numpad8" kvk_ansi_keypad9 (0x5c) "numpad9" "numpad9" kvk_jis_yen (0x5d) "intlyen" "intlyen" kvk_jis_underscore (0x5e) "intlro" "intlro" kvk_jis_keypadcomma (0x5f) "numpadcomma" "numpadcomma" kvk_f5 (0x60) "f5" "f5" kvk_f6 (0x61) "f6" "f6" kvk_f7 (0x62) "f7" "f7" kvk_f3 (0x63) "f3" "f3" kvk_f8 (0x64) "f8" "f8" kvk_f9 (0x65) "f9" "f9" kvk_jis_eisu (0x66) "lang2" "" (no events fired actually) kvk_f11 (0x67) "f11" "f11" kvk_jis_kana (0x68) "lang1" "kanamode" (no events fired actually) kvk_f13 (0x69) "f13" "f13" kvk_f16 (...
... 0x0058 "numpad2" "numpad2" 0x0059 "numpad3" "numpad3" 0x005a "numpad0" "numpad0" 0x005b "numpaddecimal" "numpaddecimal" 0x005c, 0x005d "unidentified" "" 0x005e "intlbackslash" "intlbackslash" 0x005f "f11" "f11" 0x0060 "f12" "f12" 0x0061 "intlro" "intlro" 0x0062, 0x0063 "unidentified" "" 0x0064 "convert" "convert" 0x0065 "kanamode" "kanamode" 0x0066 "nonconvert" "nonconvert" 0x0067 "unidentified" "" 0x0068 "numpadenter" "numpadenter" 0x0069 "controlright" "controlright" 0x006a "numpaddivide" "numpaddivide" 0x006b "printscreen" "pr...
... "unidentified" 0x0056 "intlbackslash" 0x0057 "f11" 0x0058 "f12" 0x0059 "intlro" 0x005a, 0x005b "unidentified" 0x005c "convert" 0x005d "kanamode" 0x005e "nonconvert" 0x005f "unidentified" 0x0060 "numpadenter" 0x0061 "controlright" 0x0062 "numpaddivide" 0x0063 "printscreen" 0x0064 "altright" 0x0065 "unidentified" 0x0066 "home" 0x0067 "arrowup" 0x0068 "pageup" 0x0069 "arrowleft" 0x006a "arrowright" 0x006b "end" 0x006c "arrowdown" 0x006d "pagedown" 0x006e "insert" 0x006f...

Key Values - Web APIs
vk_space (0x20) kvk_space (0x31) gdk_key_space (0x20) gdk_key_kp_space (0xff80) qt::key_space (0x20) keycode_space (62) [1] older browsers may return "spacebar" instead of " " for the space bar key.
...dk_key_dead_voiced_sound (0xfe5e) qt::key_dead_voiced_sound (0x0100125e) ゙ gdk_key_dead_semivoiced_sound (0xfe5f) qt::key_dead_semivoiced_sound (0x0100125f) ゚ gdk_key_dead_belowdot (0xfe60) qt::key_dead_belowdot (0x01001260) ̣̣ gdk_key_dead_hook (0xfe61) qt::key_dead_hook (0x01001261) ̡ gdk_key_dead_horn (0xfe62) qt::key_dead_horn (0x01001262) ̛ gdk_key_dead_stroke (0xfe63) ̶̶ gdk_key_dead_abovecomma (0xfe64) ̓̓ gdk_key_dead_psili (0xfe64) ᾿ gdk_key_dead_abovereversedcomma (0xfe65) ʽ gdk_key_dead_dasia (0xfe65) ῾ gdk_key_dead_doublegrave (0xfe66) ̏ gdk_key_dead_belowring (0x...
... vk_f7 (0x76) kvk_f7 (0x62) gdk_key_f7 (0xffc4) qt::key_f7 (0x01000036) keycode_f7 (137) "f8" the f8 key.
... vk_browser_forward (0xa7) appcommand_browser_forward gdk_key_forward (0x1008ff27) qt::key_forward (0x01000062) keycode_forward (125) "browserhome" navigates to the user's preferred home page.

PaymentAddress.toJSON() - Web APIs
to change preferences in chrome, visit chrome://flags.edge full support 15firefox full support 62notes disabled full support 62notes disabled notes available only in nightly builds.
... requires the comma-delineated list in dom.payments.request.supportedregions to contain one or more of the supported 2-character iso locales, currently us and ca.disabled from version 62: this feature is behind the dom.payments.request.enabled preference (needs to be set to true).
...to change preferences in chrome, visit chrome://flags.firefox android full support 62notes disabled full support 62notes disabled notes available only in nightly builds.
... requires the comma-delineated list in dom.payments.request.supportedregions to contain one or more of the supported 2-character iso locales, currently us and ca.disabled from version 62: this feature is behind the dom.payments.request.enabled preference (needs to be set to true).

WebGL constants - Web APIs
constant name value description current_vertex_attrib 0x8626 passed to getvertexattrib to read back the current vertex attribute.
... vertex_attrib_array_enabled 0x8622 vertex_attrib_array_size 0x8623 vertex_attrib_array_stride 0x8624 vertex_attrib_array_type 0x8625 vertex_attrib_array_normalized 0x886a vertex_attrib_array_pointer 0x8645 vertex_attrib_array_buffer_binding 0x889f culling constants passed to webglrenderingcontext.cullface().
...t 0x8df1 high_float 0x8df2 low_int 0x8df3 medium_int 0x8df4 high_int 0x8df5 framebuffers and renderbuffers constant name value description framebuffer 0x8d40 renderbuffer 0x8d41 rgba4 0x8056 rgb5_a1 0x8057 rgb565 0x8d62 depth_component16 0x81a5 stencil_index8 0x8d48 depth_stencil 0x84f9 renderbuffer_width 0x8d42 renderbuffer_height 0x8d43 renderbuffer_internal_format 0x8d44 renderbuffer_red_size 0x8d50 renderbuffer_green_size 0x8d51 renderbuffer_blue_size 0x8d52...
... color_attachment10 0x8cea color_attachment11 0x8ceb color_attachment12 0x8cec color_attachment13 0x8ced color_attachment14 0x8cee color_attachment15 0x8cef samplers constant name value description sampler_3d 0x8b5f sampler_2d_shadow 0x8b62 sampler_2d_array 0x8dc1 sampler_2d_array_shadow 0x8dc4 sampler_cube_shadow 0x8dc5 int_sampler_2d 0x8dca int_sampler_3d 0x8dcb int_sampler_cube 0x8dcc int_sampler_2d_array 0x8dcf unsigned_int_sampler_2d 0x8dd2 unsigned_int_sampler_3d 0x8dd3 ...

Example and tutorial: Simple synth keyboard - Web APIs
function createnotetable() { let notefreq = []; for (let i=0; i< 9; i++) { notefreq[i] = []; } notefreq[0]["a"] = 27.500000000000000; notefreq[0]["a#"] = 29.135235094880619; notefreq[0]["b"] = 30.867706328507756; notefreq[1]["c"] = 32.703195662574829; notefreq[1]["c#"] = 34.647828872109012; notefreq[1]["d"] = 36.708095989675945; notefreq[1]["d#"] = 38.890872965260113; notefreq[1]["e"] = 41.203444614108741; notefreq[1]["f"] = 43.653528929125485; notefreq[1]["f#"] = 46.249302838954299; notefreq[1]["g"] = 48.999429497718661; notefreq[1]["g#"] = 51.913087197493142; notefreq[1]["a"] = 55.000000000000000; notefreq[1]["a#"]...
... notefreq[2]["c"] = 65.406391325149658; notefreq[2]["c#"] = 69.295657744218024; notefreq[2]["d"] = 73.416191979351890; notefreq[2]["d#"] = 77.781745930520227; notefreq[2]["e"] = 82.406889228217482; notefreq[2]["f"] = 87.307057858250971; notefreq[2]["f#"] = 92.498605677908599; notefreq[2]["g"] = 97.998858995437323; notefreq[2]["g#"] = 103.826174394986284; notefreq[2]["a"] = 110.000000000000000; notefreq[2]["a#"] = 116.540940379522479; notefreq[2]["b"] = 123.470825314031027; notefreq[3]["c"] = 130.812782650299317; notefreq[3]["c#"] = 138.591315488436048; notefreq[3]["d"] = 146.832383958703780; notefreq[3]["d#"] = 155.563491861040455; notefreq[3]["e"] = 164.813778456434964; notefreq[3]["f"] = 174.614115716501942; notefreq[3][...
..."f#"] = 184.997211355817199; notefreq[3]["g"] = 195.997717990874647; notefreq[3]["g#"] = 207.652348789972569; notefreq[3]["a"] = 220.000000000000000; notefreq[3]["a#"] = 233.081880759044958; notefreq[3]["b"] = 246.941650628062055; notefreq[4]["c"] = 261.625565300598634; notefreq[4]["c#"] = 277.182630976872096; notefreq[4]["d"] = 293.664767917407560; notefreq[4]["d#"] = 311.126983722080910; notefreq[4]["e"] = 329.627556912869929; notefreq[4]["f"] = 349.228231433003884; notefreq[4]["f#"] = 369.994422711634398; notefreq[4]["g"] = 391.995435981749294; notefreq[4]["g#"] = 415.304697579945138; notefreq[4]["a"] = 440.000000000000000; notefreq[4]["a#"] = 466.163761518089916; notefreq[4]["b"] = 493.883301256124111; notefreq[5]["c"] = 523.251130601197269; notefr...
...eq[5]["c#"] = 554.365261953744192; notefreq[5]["d"] = 587.329535834815120; notefreq[5]["d#"] = 622.253967444161821; notefreq[5]["e"] = 659.255113825739859; notefreq[5]["f"] = 698.456462866007768; notefreq[5]["f#"] = 739.988845423268797; notefreq[5]["g"] = 783.990871963498588; notefreq[5]["g#"] = 830.609395159890277; notefreq[5]["a"] = 880.000000000000000; notefreq[5]["a#"] = 932.327523036179832; notefreq[5]["b"] = 987.766602512248223; notefreq[6]["c"] = 1046.502261202394538; notefreq[6]["c#"] = 1108.730523907488384; notefreq[6]["d"] = 1174.659071669630241; notefreq[6]["d#"] = 1244.507934888323642; notefreq[6]["e"] = 1318.510227651479718; notefreq[6]["f"] = 1396.912925732015537; notefreq[6]["f#"] = 1479.977690846537595; notefreq[6]["g"] = 1567.981743926997...

Array.prototype.filter() - JavaScript
polyfill filter() was added to the ecma-262 standard in the 5th edition.
... you can work around this by inserting the following code at the beginning of your scripts, allowing use of filter() in ecma-262 implementations which do not natively support it.
... this algorithm is exactly equivalent to the one specified in ecma-262, 5th edition, assuming that fn.call evaluates to the original value of function.prototype.bind(), and that array.prototype.push() has its original value.
...ords words = ['spray', 'limit', 'exuberant', 'destruction', 'elite', 'present'] const deletewords = words.filter( (word, index, arr) => { arr.pop() return word.length < 6 }) console.log(deletewords) // notice 'elite' is not even obtained as its been popped off `words` before filter can even get there // ["spray" ,"limit"] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.filter' in that specification.

Array.prototype.indexOf() - JavaScript
polyfill indexof() was added to the ecma-262 standard in the 5th edition; as such it may not be present in all browsers.
...this algorithm matches the one specified in ecma-262, 5th edition, assuming typeerror and math.abs() have their original values.
... // production steps of ecma-262, edition 5, 15.4.4.14 // reference: http://es5.github.io/#x15.4.4.14 if (!array.prototype.indexof) { array.prototype.indexof = function(searchelement, fromindex) { "use strict"; var k; // 1.
... specifications specification ecmascript (ecma-262)the definition of 'array.prototype.indexof' in that specification.

Array.prototype.lastIndexOf() - JavaScript
polyfill lastindexof was added to the ecma-262 standard in the 5th edition; as such it may not be present in other implementations of the standard.
...this algorithm is exactly the one specified in ecma-262, 5th edition, assuming object, typeerror, number, math.floor, math.abs, and math.min have their original values.
... // production steps of ecma-262, edition 5, 15.4.4.15 // reference: http://es5.github.io/#x15.4.4.15 if (!array.prototype.lastindexof) { array.prototype.lastindexof = function(searchelement /*, fromindex*/) { 'use strict'; if (this === void 0 || this === null) { throw new typeerror(); } var n, k, t = object(this), len = t.length >>> 0; if (len === 0) { return -1; } n = len - 1; if (arguments.length > 1) { n = number(arguments[1]); if (n != n) { n = 0; } else if (n != 0 && n != (1 / 0) && n != -(1 / 0)) { n = (n > 0 || -1) * math.floor(math.abs(n)); } } for (k = n >= 0 ?
... specifications specification ecmascript (ecma-262)the definition of 'array.prototype.lastindexof' in that specification.

Array.prototype.map() - JavaScript
polyfill map was added to the ecma-262 standard in the 5th edition.
...this algorithm is exactly the one specified in ecma-262, 5th edition, assuming object, typeerror, and array have their original values and that callback.call evaluates to the original value of function.prototype.call.
... // production steps of ecma-262, edition 5, 15.4.4.19 // reference: http://es5.github.io/#x15.4.4.19 if (!array.prototype.map) { array.prototype.map = function(callback/*, thisarg*/) { var t, a, k; if (this == null) { throw new typeerror('this is null or not defined'); } // 1.
...// filterednumbers is [1, 2, 3, undefined] // numbers is still [1, 2, 3, 4] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.map' in that specification.

Array.prototype.some() - JavaScript
polyfill some() was added to the ecma-262 standard in the 5th edition, and it may not be present in all implementations of the standard.
... this algorithm is exactly the one specified in ecma-262, 5th edition, assuming object and typeerror have their original values and that fun.call evaluates to the original value of function.prototype.call().
... // production steps of ecma-262, edition 5, 15.4.4.17 // reference: http://es5.github.io/#x15.4.4.17 if (!array.prototype.some) { array.prototype.some = function(fun, thisarg) { 'use strict'; if (this == null) { throw new typeerror('array.prototype.some called on null or undefined'); } if (typeof fun !== 'function') { throw new typeerror(); } var t = object(this); var len = t.length >>> 0; for (var i = 0; i < len; i++) { if (i in t && fun.call(thisarg, t[i], i, t)) { return true; } } return false; }; } examples testing value of array elements the following example tests whether any element in the array is bigger than 10.
...ue', 1]; function getboolean(value) { 'use strict'; if (typeof value === 'string') { value = value.tolowercase().trim(); } return truthy_values.some(function(t) { return t === value; }); } getboolean(false); // false getboolean('false'); // false getboolean(1); // true getboolean('true'); // true specifications specification ecmascript (ecma-262)the definition of 'array.prototype.some' in that specification.

Function.prototype.bind() - JavaScript
(proper bound functions have none.) the partial implementation creates bound functions whose length property does not agree with that mandated by ecma-262: it creates functions with length of 0.
...according to ecma-262, name of the returned bound function should be "bound " + name of target function (note the space character).
... if you choose to use this partial implementation, you must not rely on those cases where behavior deviates from ecma-262, 5th edition!
... slice(arguments); specifications specification ecmascript (ecma-262)the definition of 'function.prototype.bind' in that specification.

SVG documentation index - SVG: Scalable Vector Graphics
62 dur svg, svg attribute the dur attribute indicates the simple duration of an animation.
... 162 pointer-events svg, svg attribute the pointer-events attribute is a presentation attribute that allows defining whether or when an element may be the target of a mouse event.
... 262 xml:lang svg, svg attribute the xml:lang attribute specifies the primary language used in contents and attributes containing text content of particular elements.
... 362 <rect> element, reference, svg, svg graphics the <rect> element is a basic svg shape that draws rectangles, defined by their position, width, and height.

StringView - Archive of obsolete content
62 : nchr === 47 ?
... nuint6 + 71 : nuint6 < 62 ?
... nuint6 - 4 : nuint6 === 62 ?

Actionscript Performance Tests - Archive of obsolete content
# change the iterations $ ./runtests.py --iterations=10 sunspider/*.as test avm 95% conf metric sunspider/access-binary-trees.as 565 1.0% time [565, 586, 573, 577, 567, 567, 579, 576, 565, 585] sunspider/access-fannkuch.as 361 0.3% time [365, 366, 362, 363, 366, 361, 363, 363, 364, 364] ...
... # compare 2 builds $ ./runtests.py --avm2=build2/avmshell sunspider/*.as test avm avm2 %sp metric sunspider/access-binary-trees.as 565 564 0.2 time sunspider/access-fannkuch.as 366 362 1.1 time ...
... min : max avg min : max avg %diff metric ----------------------- ----------------------- ----- sunspider/access-binary-trees.as [ 567.0 : 585] 575.9 [ 564.0 : 580] 572.0 0.5 time sunspider/access-fannkuch.as [ 363.0 : 386] 370.0 [ 362.0 : 399] 371.8 0.3 time ...

reftest opportunities files - Archive of obsolete content
lparser/tests/html/bug8681.html parser/htmlparser/tests/html/bug8080.html parser/htmlparser/tests/html/bug8056.html parser/htmlparser/tests/html/bug7889.html parser/htmlparser/tests/html/bug7823.html parser/htmlparser/tests/html/bug7724.html parser/htmlparser/tests/html/bug7723.html parser/htmlparser/tests/html/bug7447.html parser/htmlparser/tests/html/bug6925.html parser/htmlparser/tests/html/bug6233.html parser/htmlparser/tests/html/bug5859.html parser/htmlparser/tests/html/bug4956.html parser/htmlparser/tests/html/bug4825.html parser/htmlparser/tests/html/bug4814.html parser/htmlparser/tests/html/bug4809.html parser/htmlparser/tests/html/bug466.html parser/htmlparser/tests/html/bug3073.html parser/htmlparser/tests/html/bug256731.html parser/htmlparser/tests/html/bug2447.html parser/htmlpa...
...77746.html parser/htmlparser/tests/html/77352.html parser/htmlparser/tests/html/70148.html parser/htmlparser/tests/html/69576.html parser/htmlparser/tests/html/67874.html parser/htmlparser/tests/html/67569.html parser/htmlparser/tests/html/65467.html parser/htmlparser/tests/html/6148.html parser/htmlparser/tests/html/58809.html parser/htmlparser/tests/html/58455.html parser/htmlparser/tests/html/56245_3.html parser/htmlparser/tests/html/56245_2.html parser/htmlparser/tests/html/56245_1.html parser/htmlparser/tests/html/54845.html parser/htmlparser/tests/html/54651.html parser/htmlparser/tests/html/53112.html parser/htmlparser/tests/html/51161.html parser/htmlparser/tests/html/50050.html parser/htmlparser/tests/html/48351.html parser/htmlparser/tests/html/48256.html parser/htmlparser/tests/ht...
..._cr.html parser/htmlparser/tests/html/40713.html parser/htmlparser/tests/html/40143.html parser/htmlparser/tests/html/35806.html parser/htmlparser/tests/html/32782.html parser/htmlparser/tests/html/3248.html parser/htmlparser/tests/html/30487.html parser/htmlparser/tests/html/27490.html parser/htmlparser/tests/html/26853.html parser/htmlparser/tests/html/26347.html parser/htmlparser/tests/html/24462.html parser/htmlparser/tests/html/24184.html parser/htmlparser/tests/html/22596.html parser/htmlparser/tests/html/22480.html parser/htmlparser/tests/html/22263.html parser/htmlparser/tests/html/20087.html parser/htmlparser/tests/html/19116.html parser/htmlparser/tests/html/187790.html parser/htmlparser/tests/html/184029_iframe.html parser/htmlparser/tests/html/184029.html parser/htmlparser/tests/...

ECMAScript 2016 to ES.Next support in Mozilla - Archive of obsolete content
(may 2019) ecmascript next refers to new features of the ecma-262 standard (commonly referred to as javascript) introduced after ecmascript 2015.
... you can see the latest proposals on the tc39/ecma262 github repository.
... (firefox 57, with flags) global_objects/promise/finally (firefox 58) global_objects/regexp/dotall (not yet implemented; in other browsers) regexp lookbehind assertions (not yet implemented; in other browsers) regexp unicode property escapes (not yet implemented; in other browsers) regexp named capture groups (not yet implemented; in other browsers) ecmascript 2019 array.flat() (firefox 62) array.flatmap() (firefox 62) object.fromentries() (firefox 63) string.trimstart() and string.trimend() (firefox 61) optional catch binding (firefox 58) function.tostring() revision (firefox 54) symbol.description (firefox 63) well-formed json.stringify() (firefox 64) ecmascript 2020 this is the current es.next version.

LiveConnect Overview - Archive of obsolete content
byte double float int long short all values are converted to numbers as described in ecma-262.
... the javascript string value is converted to a number according to the rules described in ecma-262.
... byte char double float int long short the object is converted to a value using the logic of the toprimitive operator described in ecma-262.

Windows Media in Netscape - Archive of obsolete content
for example if (window.activexobject) { // internet explorer only script } server-side detection using user-agent strings netscape 7.1's user agent string on windows has the general pattern: mozilla/5.0 (windows; u; <em>operating system version</em>; <em>language</em>; rv:1.4) gecko/20030624 netscape/7.1 (ax<em>[;optional comments]</em>) the "vendor comment" (ax) following the "vendor version" netscape/7.1 is an indicator that the browser supports the windows media player activex control.
... for example on windows xp, netscape 7.1's user agent string may be: mozilla/5.0 (windows; u; windows nt 5.1; en-us; rv:1.4) gecko/20030624 netscape/7.1 (ax) if the client was customized by a third party, additional information may be present in the "vendor comment" area of the user agent string.
... for example: mozilla/5.0 (windows; u; windows nt 5.1; en-us; rv:1.4) gecko/20030624 netscape/7.1 (ax; promostring) although geckoactivexobject is currently available only in netscape 7.1 on windows, it may be the case in the future that it will be available in other gecko-based browsers on other operating systems.

Styling links - Learn web development
><a href="#">home</a></li><li><a href="#">pizza</a></li><li><a href="#">music</a></li><li><a href="#">wombats</a></li><li><a href="#">finland</a></li> </ul> and now our css: body,html { margin: 0; font-family: sans-serif; } ul { padding: 0; width: 100%; } li { display: inline; } a { outline: none; text-decoration: none; display: inline-block; width: 19.5%; margin-right: 0.625%; text-align: center; line-height: 3; color: black; } li:last-child a { margin-right: 0; } a:link, a:visited, a:focus { background: yellow; } a:hover { background: orange; } a:active { background: red; color: white; } this gives us the following result: let's explain what's going on here, focusing on the most interesting parts: our second rule removes the default paddi...
...to do this, we set the width to 19.5%, and the margin-right to 0.625%.
... you'll notice that all this width adds up to 100.625%, which would make the last button overflow the <ul> and fall down to the next line.

Example 1 - Learn web development
--------------- */ .select { position: relative; display : inline-block; } .select.active, .select:focus { box-shadow: 0 0 3px 1px #227755; outline: none; } .select .optlist { position: absolute; top : 100%; left : 0; } .select .optlist.hidden { max-height: 0; visibility: hidden; } /* ------------ */ /* fancy styles */ /* ------------ */ .select { font-size : 0.625em; /* 10px */ font-family : verdana, arial, sans-serif; -moz-box-sizing : border-box; box-sizing : border-box; padding : 0.1em 2.5em 0.2em 0.5em; /* 1px 25px 2px 5px */ width : 10em; /* 100px */ border : 0.2em solid #000; /* 2px */ border-radius : 0.4em; /* 4px */ box-shadow : 0 0.1em 0.2em rgba(0,0,0,.45); /* 0 1px 2px */ background : #f0f0f0; background : line...
... --------------- */ .select { position: relative; display : inline-block; } .select.active, .select:focus { box-shadow: 0 0 3px 1px #227755; outline: none; } .select .optlist { position: absolute; top : 100%; left : 0; } .select .optlist.hidden { max-height: 0; visibility: hidden; } /* ------------ */ /* fancy styles */ /* ------------ */ .select { font-size : 0.625em; /* 10px */ font-family : verdana, arial, sans-serif; box-sizing : border-box; padding : 0.1em 2.5em 0.2em 0.5em; /* 1px 25px 2px 5px */ width : 10em; /* 100px */ border : 0.2em solid #000; /* 2px */ border-radius : 0.4em; /* 4px */ box-shadow : 0 0.1em 0.2em rgba(0,0,0,.45); /* 0 1px 2px */ background : #f0f0f0; background : linear-gradient(0deg, #e3e3e3, #fcfc...
... --------------- */ .select { position: relative; display : inline-block; } .select.active, .select:focus { box-shadow: 0 0 3px 1px #227755; outline: none; } .select .optlist { position: absolute; top : 100%; left : 0; } .select .optlist.hidden { max-height: 0; visibility: hidden; } /* ------------ */ /* fancy styles */ /* ------------ */ .select { font-size : 0.625em; /* 10px */ font-family : verdana, arial, sans-serif; -moz-box-sizing : border-box; box-sizing : border-box; padding : 0.1em 2.5em 0.2em 0.5em; /* 1px 25px 2px 5px */ width : 10em; /* 100px */ border : 0.2em solid #000; /* 2px */ border-radius : 0.4em; /* 4px */ box-shadow : 0 0.1em 0.2em rgba(0, 0, 0, .45); /* 0 1px 2px */ background : #f0f0f0; background : l...

Index - Learn web development
62 third-party apis 3rd party, api, beginner, codingscripting, google maps, learn, nytimes, third party, youtube this article has given you a useful introduction to using third-party apis to add functionality to your websites.
... 162 styling links article, beginner, css, focus, guide, learn, links, pseudo-class, hover, hyperlinks, menus, tabs we hope this article has provided you with all you'll need to know about links — for now!
... 262 handling common accessibility problems accessibility, article, beginner, css, codingscripting, html, javascript, learn, testing, tools, cross browser, keyboard hopefully this article has given you a good grounding in the main accessibility problems you might encounter, and how to test and overcome them.

Beginning our React todo list - Learn web development
implementing our styles paste the following css code into src/index.css so that it replaces what's currently there: /* resets */ *, *::before, *::after { box-sizing: border-box; } *:focus { outline: 3px dashed #228bec; outline-offset: 0; } html { font: 62.5% / 1.15 sans-serif; } h1, h2 { margin-bottom: 0; } ul { list-style: none; padding: 0; } button { border: none; margin: 0; padding: 0; width: auto; overflow: visible; background: transparent; color: inherit; font: inherit; line-height: normal; -webkit-font-smoothing: inherit; -moz-osx-font-smoothing: inherit; -webkit-appearance: none; } button::-moz-focus-inner { ...
...border: 0; } button, input, optgroup, select, textarea { font-family: inherit; font-size: 100%; line-height: 1.15; margin: 0; } button, input { overflow: visible; } input[type="text"] { border-radius: 0; } body { width: 100%; max-width: 68rem; margin: 0 auto; font: 1.6rem/1.25 arial, sans-serif; background-color: #f5f5f5; color: #4d4d4d; } @media screen and (min-width: 620px) { body { font-size: 1.9rem; line-height: 1.31579; } } /*end resets*/ /* global styles */ .form-group > input[type="text"] { display: inline-block; margin-top: 0.4rem; } .btn { padding: 0.8rem 1rem 0.7rem; border: 0.2rem solid #4d4d4d; cursor: pointer; text-transform: capitalize; } .btn.toggle-btn { border-width: 1px; border-color: #d3d3d3; } .btn.toggle-btn[aria-presse...
....01567; font-weight: 300; padding: 0.8rem; margin-bottom: 1rem; text-align: center; } .input__lg { padding: 2rem; border: 2px solid #000; } .input__lg:focus { border-color: #4d4d4d; box-shadow: inset 0 0 0 2px; } [class*="__lg"] { display: inline-block; width: 100%; font-size: 1.9rem; } [class*="__lg"]:not(:last-child) { margin-bottom: 1rem; } @media screen and (min-width: 620px) { [class*="__lg"] { font-size: 2.4rem; } } .filters { width: 100%; margin: unset auto; } /* todo item styles */ .todo { display: flex; flex-direction: row; flex-wrap: wrap; } .todo > * { flex: 0 0 100%; } .todo-text { width: 100%; min-height: 4.4rem; padding: 0.4rem 0.8rem; border: 2px solid #565656; } .todo-text:focus { box-shadow: inset 0 0 0 2px; } /* checkbox...

Styling Vue components with CSS - Learn web development
add the following contents to the reset.css file: /*reset.css*/ /* resets */ *, *::before, *::after { box-sizing: border-box; } *:focus { outline: 3px dashed #228bec; } html { font: 62.5% / 1.15 sans-serif; } h1, h2 { margin-bottom: 0; } ul { list-style: none; padding: 0; } button { border: none; margin: 0; padding: 0; width: auto; overflow: visible; background: transparent; color: inherit; font: inherit; line-height: normal; -webkit-font-smoothing: inherit; -moz-osx-font-smoothing: inherit; -webkit-appearance: none; } button::-moz-focus-inner { ...
...t: 1.15; margin: 0; } button, input { /* 1 */ overflow: visible; } input[type="text"] { border-radius: 0; } body { width: 100%; max-width: 68rem; margin: 0 auto; font: 1.6rem/1.25 "helvetica neue", helvetica, arial, sans-serif; background-color: #f5f5f5; color: #4d4d4d; -moz-osx-font-smoothing: grayscale; -webkit-font-smoothing: antialiased; } @media screen and (min-width: 620px) { body { font-size: 1.9rem; line-height: 1.31579; } } /*end resets*/ next, in your src/main.js file, import the reset.css file like so: import './assets/reset.css'; this will cause the file to get picked up during the build step and automatically added to our site.
...#000; } .btn-group { display: flex; justify-content: space-between; } .btn-group > * { flex: 1 1 auto; } .btn-group > * + * { margin-left: 0.8rem; } .label-wrapper { margin: 0; flex: 0 0 100%; text-align: center; } [class*="__lg"] { display: inline-block; width: 100%; font-size: 1.9rem; } [class*="__lg"]:not(:last-child) { margin-bottom: 1rem; } @media screen and (min-width: 620px) { [class*="__lg"] { font-size: 2.4rem; } } .visually-hidden { position: absolute; height: 1px; width: 1px; overflow: hidden; clip: rect(1px 1px 1px 1px); clip: rect(1px, 1px, 1px, 1px); clip-path: rect(1px, 1px, 1px, 1px); white-space: nowrap; } [class*="stack"] > * { margin-top: 0; margin-bottom: 0; } .stack-small > * + * { margin-top: 1.25rem; } .stack-large > ...

NSS 3.12.9 release notes
bug 609068: implement j-pake in freebl bug 607058: crash [@ nss_cms_decoder_work_data] bug 613394: november/december 2010 batch of nss root ca changes bug 610843: need way to recover softoken in child after fork() bug 617492: add pk11_keygenwithtemplate function to pk11wrap (for firefox sync) bug 610162: sha-512 and sha-384 hashes are incorrect for inputs of 512mb or larger when running under windows and other 32-bit platforms (fx 3.6.12 and 4.0b6) bug 518551: vfychain crashes in pkits tests.
... bug 620908: certutil -t -d "sql:." dumps core bug 584257: need a way to expand partial private keys.
... bug 596798: win_rand.c (among others) uses unsafe _snwprintf bug 597622: do not use the sec_error_bad_info_access_location error code for bad crl distribution point urls bug 619268: memory leaks in cert_changecerttrust and cert_savesmimeprofile bug 585518: addtrust qualified ca root serial wrong in certdata.txt trust entry bug 337433: need cert_findcertbynicknameoremailaddrbyusage bug 592939: expired cas in certdata.txt documentation <for a="" class="new " documentation="" href="/en/index.html#documentation" list="" nss="" of="" pages="" primary="" rel="internal" see="" the="" title="en/index.html#documentation">nss documentation.

NSS 3.21 release notes
new in nss 3.21 new functionality certutil now supports a --rename option to change a nickname (bug 1142209) tls extended master secret extension (rfc 7627) is supported (bug 1117022) new info functions added for use during mid-handshake callbacks (bug 1084669) new functions in nss.h nss_optionset - sets nss global options nss_optionget - gets the current value of nss global options in secmod.h secmod_createmoduleex - create a new secmodmodule structure from module name string, module parameters string, nss specific para...
...igured ssl_error_missing_extended_master_secret - error code for when the extended master secret is missing after having been negotiated ssl_error_unexpected_extended_master_secret - error code for receiving an extended master secret when previously not negotiated in sslt.h ssl_enable_extended_master_secret - configuration to enable the tls extended master secret extension (rfc 7627) ssl_preinfo_version - used with sslpreliminarychannelinfo to indicate that a tls version has been selected ssl_preinfo_cipher_suite - used with sslpreliminarychannelinfo to indicate that a tls cipher suite has been selected ssl_preinfo_all - used with sslpreliminarychannelinfo to indicate that all preliminary information has been set notable changes in nss 3.21 nss now builds...
...(c) kasım 2005 sha-1 fingerprint: b4:35:d4:e1:11:9d:1c:66:90:a7:49:eb:b3:94:bd:63:7b:a7:82:b7 the following ca certificate had the websites trust bit turned off ou = equifax secure certificate authority sha1 fingerprint: d2:32:09:ad:23:d3:14:23:21:74:e4:0d:7f:9d:62:13:97:86:63:3a the following ca certificates were added cn = certification authority of wosign g2 sha1 fingerprint: fb:ed:dc:90:65:b7:27:20:37:bc:55:0c:9c:56:de:bb:f2:78:94:e1 cn = ca wosign ecc root sha1 fingerprint: d2:7a:d2:be:ed:94:c0:a1:3c:c7:25:21:ea:5d:71:be:81:19:f3:2b cn = oiste wisekey global root gb ca sha1 fing...

NSS 3.28.1 release notes
uypass class 2 ca 1 sha-256 fingerprint: 0f:4e:9c:dd:26:4b:02:55:50:d1:70:80:63:40:21:4f:e9:44:34:c9:b0:2f:69:7e:c7:10:fc:5f:ea:fb:5e:38 cn = root ca generalitat valenciana sha-256 fingerprint: 8c:4e:df:d0:43:48:f3:22:96:9e:7e:29:a4:cd:4d:ca:00:46:55:06:1c:16:e1:b0:76:42:2e:f3:42:ad:63:0e ou = rsa security 2048 v3 sha-256 fingerprint: af:8b:67:62:a1:e5:28:22:81:61:a9:5d:5c:55:9e:e2:66:27:8f:75:d7:9e:83:01:89:a5:03:50:6a:bd:6b:4c the following ca certificates were added ou = ac raiz fnmt-rcm sha-256 fingerprint: eb:c5:57:0c:29:01:8c:4d:67:b1:aa:12:7b:af:12:f7:03:b4:61:1e:bc:17:b7:da:b5:57:38:94:17:9b:93:fa cn = amazon root ca 1 sha-256 fingerprint: 8e:cd:e6:88:4f:3d:87:b1:12:5b:a3:1a:c3:...
...fc:b1:3d:70:16:de:7f:57:cc:90:4f:e1:cb:97:c6:ae:98:19:6e cn = amazon root ca 2 sha-256 fingerprint: 1b:a5:b2:aa:8c:65:40:1a:82:96:01:18:f8:0b:ec:4f:62:30:4d:83:ce:c4:71:3a:19:c3:9c:01:1e:a4:6d:b4 cn = amazon root ca 3 sha-256 fingerprint: 18:ce:6c:fe:7b:f1:4e:60:b2:e3:47:b8:df:e8:68:cb:31:d0:2e:bb:3a:da:27:15:69:f5:03:43:b4:6d:b3:a4 cn = amazon root ca 4 sha-256 fingerprint: e3:5d:28:41:9e:d0:20:25:cf:a6:90:38:cd:62:39:62:45:8d:a5:c6:95:fb:de:a3:c2:2b:0b:fb:25:89:70:92 cn = luxtrust global root 2 sha-256 fingerprint: 54:45:5f:71:29:c2:0b:14:47:c4:18:f9:97:16:8f:24:c5:8f:c5:02:3b:f5:da:5b:e2:eb:6e:1d:d8:90:2e:d5 cn = symantec class 1 public primary certification authority - g4 sha-256...
...1:45:66:68:5b:e8:a8:89:e2:7a:a8:c7:d7:ae:1d:8a:ad:db:a3:c1:ec:f9:d2:48:63:cd:34:b9 cn = symantec class 2 public primary certification authority - g4 sha-256 fingerprint: fe:86:3d:08:22:fe:7a:23:53:fa:48:4d:59:24:e8:75:65:6d:3d:c9:fb:58:77:1f:6f:61:6f:9d:57:1b:c5:92 cn = symantec class 2 public primary certification authority - g6 sha-256 fingerprint: cb:62:7d:18:b5:8a:d5:6d:de:33:1a:30:45:6b:c6:5c:60:1a:4e:9b:18:de:dc:ea:08:e7:da:aa:07:81:5f:f0 the version number of the updated root ca list has been set to 2.11 a misleading assertion/alert has been removed, when nss tries to flush data to the peer but the connection was already reset.

NSS 3.48 release notes
see bug 1562671 for details.
... certificate authority changes the following ca certificates were added: bug 1591178 - entrust root certification authority - g4 cert sha-256 fingerprint: db3517d1f6732a2d5ab97c533ec70779ee3270a62fb4ac4238372460e6f01e88 upcoming changes in nss 3.49 the legacy dbm database, libnssdbm, will no longer be built by default.
...s friendly if it implements ckp_public_certificates_token bug 1566126 - power ghash vector acceleration bug 1589073 - use of new pr_assert_arg in certdb.c bug 1590495 - fix a crash in pk11_makecertfromhandle bug 1591742 - ensure des iv length is valid before usage from pkcs#11 bug 1588567 - enable mozilla::pkix gtests in nss ci bug 1591315 - update nsc_decrypt length in constant time bug 1562671 - increase nss mp kdf default iteration count, by default for modern key4 storage, optionally for legacy key3.db storage bug 1590972 - use -std=c99 rather than -std=gnu99 bug 1590676 - fix build if arm doesn't support neon bug 1575411 - enable tls extended master secret by default bug 1590970 - ssl_settimefunc has incomplete coverage bug 1590678 - remove -wmaybe-uninitialized warning in t...

NSS 3.54 release notes
certificate authority changes the following ca certificates were added: bug 1645186 - certsign root ca g2 sha-256 fingerprint: 657cfe2fa73faa38462571f332a2363a46fce7020951710702cdfbb6eeda3305 bug 1645174 - e-szigno root ca 2017 sha-256 fingerprint: beb00b30839b9bc32c32e4447905950641f26421b15ed089198b518ae2ea1b99 bug 1641716 - microsoft ecc root certificate authority 2017 sha-256 fingerprint: 358df39d764af9e1b766e9c972df352ee15cfac227af6ad1d70e8e4a6edcba02 bug 1641716 - microsoft rsa ro...
...256 fingerprint: fe863d0822fe7a2353fa484d5924e875656d3dc9fb58771f6f616f9d571bc592 bug 1618402 - symantec class 1 public primary certification authority - g4 sha-256 fingerprint: 363f3c849eab03b0a2a0f636d7b86d04d3ac7fcfe26a0a9121ab9795f6e176df bug 1618402 - verisign class 3 public primary certification authority - g3 sha-256 fingerprint: eb04cf5eb1f39afa762f2bb120f296cba520c1b97db1589565b81cb9a17b7244 a number of certificates had their email trust bit disabled.
... bug 1621151 - disable email trust bit for "o=government root certification authority; c=tw" root.

sslerr.html
ssl_error_tx_record_too_long -12262 "ssl attempted to send a record that exceeded the maximum permissible length." this error should never occur.
... sec_error_expired_issuer_certificate -8162 the certificate issuer's certificate has expired.
...r_ocsp_not_enabled -8065 "you must enable ocsp before performing this operation." sec_error_ocsp_no_default_responder -8064 "you must set the ocsp default responder 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...

Hacking Tips
der .* spidermonkey (gdb) backtrace 10 #0 0x0000000000f89979 in js::math_cos(jscontext*, unsigned int, js::value*) (cx=0x14f2640, argc=1, vp=0x7fffffff6a88) at js/src/jsmath.cpp:338 #1 0x0000000000ca9c6e in js::calljsnative(jscontext*, bool (*)(jscontext*, unsigned int, js::value*), js::callargs const&) (cx=0x14f2640, native=0xf89960 , args=...) at js/src/jscntxtinlines.h:235 #2 0x0000000000c87625 in js::invoke(jscontext*, js::callargs const&, js::maybeconstruct) (cx=0x14f2640, args=..., construct=js::no_construct) at js/src/vm/interpreter.cpp:476 #3 0x000000000069bdcf in js::jit::docallfallback(jscontext*, js::jit::baselineframe*, js::jit::iccall_fallback*, uint32_t, js::value*, js::mutablehandlevalue) (cx=0x14f2640, frame=0x7fffffff6ad8, stub_=0x1798838, argc=1, vp=0x7fffffff6a88, res=...
...(2 locations) (gdb) dprintf ion.cpp:3196, "invalidate %s:%d:%d-%d\n", co->script_->scriptsource()->filename_.mtuple.mfirsta, co->script_->lineno_, co->script_->sourcestart_, co->script_->sourceend_ dprintf 3 at 0x7fb4f6a0b62a: file /home/nicolas/mozilla/contrib-push/js/src/jit/ion.cpp, line 3196.
... js> datenow() - datenow() -0.0009765625 benchmarking with sub-milliseconds (browser) in a simillar way as datenow() in the js shell, you can use performance.now() in the javascript code of a page.

JS_ValueToECMAInt32
js_valuetoecmaint32 implements the toint32 operator specified in ecma 262-3 9.5.
... js_valuetoecmauint32 implements the touint32 operator specified in ecma 262-3 9.6.
... js_valuetouint16 implements the touint16 operator specified in ecma 262-3 9.7.

SpiderMonkey 38
o_symbol (bug 645416) jsprop_define_late (bug 825199) jsprop_ignore_enumerate (bug 1037770) jsprop_ignore_permanent (bug 1037770) jsprop_ignore_readonly (bug 1037770) jsprop_ignore_value (bug 1037770) jsprop_propop_accessors (bug 1088002) jsprop_redefine_nonconfigurable (bug 1101123) js_addfinalizecallback (bug 996785) js_defineconstintegers (bug 1066020) js_getflatstringcharat (bug 1034627) js_getfunctionscript (bug 1069694) js_getlatin1flatstringchars (bug 1037869) js_getlatin1internedstringchars (bug 1037869) js_getlatin1stringcharsandlength (bug 1032726) js_getstringcharat (bug 1034627) js_gettwobyteexternalstringchars (bug 1034627) js_gettwobyteflatstringchars (bug 1037869) js_gettwobyteinternedstringchars (bug 1037869) js_gettwobytestringcharsandlength (bug 1032726) ...
...9) js_gettypename (bug 1037718) js_isabouttobefinalized (bug 650161) js_lookupelement (bug 1094176) js_lookupproperty (bug 1094176) js_lookuppropertybyid (bug 1094176) js_lookupucproperty (bug 1094176) js_newpropertyiterator (bug 1081660) js_nextproperty (bug 1081660) js_resolvestub (bug 1103152) js_setfinalizecallback (bug 996785) js_setfunctioncallback (bug 1103269) jschar (bug 1063962) api changes jschar, a typedef for the standard c++ type char16_t, has been removed.
...(see bug 1063962.) js_preventextensions now indicates its success or failure in two ways: via return value (as with most jsapi methods), and via outparam (indicating whether the attempt took effect or not, independent of jsapi failure).

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

Edit fonts - Firefox Developer Tools
in firefox 61 and 62, this section does not exist.
...in firefox 61 and 62, this area is labeled "other fonts in page" and doesn't include the fonts mentioned in the "fonts used" section.
... variable font support in firefox developer tools firefox 62 added support for variable fonts and firefox 63 features support for editing the properties of variable fonts in the font editor.

Web Console remoting - Firefox Developer Tools
this is no longer the case: we have made changes to allow the web console client to reuse the tabnavigated notification (bug 792062).
... the response packet: { "from": "conn0.console9", "input": "document", "result": { "type": "object", "classname": "htmldocument", "actor": "conn0.consoleobj20" "extensible": true, "frozen": false, "sealed": false }, "timestamp": 1347306273605, "exception": null, "exceptionmessage": null, "helperresult": null } exception holds the json-ification of the exception thrown during evaluation.
... firefox 20: bug 792062 - removed locationchanged packet and updated the tabnavigated packet for tab actors.

Mozilla CSS extensions - CSS: Cascading Style Sheets
r toolbarbutton-dropdown toolbox tooltip treeheadercell treeheadersortarrow treeitem treetwisty treetwistyopen treeview window background-image gradients -moz-linear-gradient -moz-radial-gradient elements -moz-element sub-images -moz-image-rect() border-color -moz-use-text-colorobsolete since gecko 52 (removed in bug 1306214); use currentcolor instead.
...tregularhighlight -moz-mac-accentregularshadow -moz-mac-chrome-active -moz-mac-chrome-inactive -moz-mac-focusring -moz-mac-menuselect -moz-mac-menushadow -moz-mac-menutextselect -moz-menuhover -moz-menuhovertext -moz-win-communicationstext -moz-win-mediatext -moz-nativehyperlinktext display -moz-box -moz-inline-block -moz-inline-box -moz-inline-gridobsolete since gecko 62 -moz-inline-stackobsolete since gecko 62 -moz-inline-table -moz-gridobsolete since gecko 62 -moz-grid-groupobsolete since gecko 62 -moz-grid-lineobsolete since gecko 62 -moz-groupbox -moz-deckobsolete since gecko 62 -moz-popupobsolete since gecko 62 -moz-stackobsolete since gecko 62 -moz-markerobsolete since gecko 62 empty-cells -moz-show-background (default value in quirks mo...
...-page ::-moz-page-sequence ::-moz-pagebreak ::-moz-pagecontent :-moz-placeholderobsolete since gecko 51 ::-moz-placeholderdeprecated since gecko 51 ::-moz-progress-bar ::-moz-range-progress ::-moz-range-thumb ::-moz-range-track :-moz-read-only :-moz-read-write s ::-moz-scrolled-canvas ::-moz-scrolled-content ::-moz-scrolled-page-sequence ::-moz-selectiondeprecated since gecko 62 :-moz-submit-invalid :-moz-suppressed ::-moz-svg-foreign-content t ::-moz-table ::-moz-table-cell ::-moz-table-column ::-moz-table-column-group ::-moz-table-outer ::-moz-table-row ::-moz-table-row-group :-moz-tree-cell :-moz-tree-cell-text :-moz-tree-cell-text(hover) :-moz-tree-checkbox :-moz-tree-column :-moz-tree-drop-feedback :-moz-tree-image :-moz-tree-indentation :-m...

font-size - CSS: Cascading Style Sheets
similarly, if you want a font size of 10px, then specify 0.625em (10/16 = 0.625); for 22px, specify 1.375em (22/16).
...take the following html and css: html { font-size: 62.5%; /* font-size 1em = 10px on default browser settings */ } span { font-size: 1.6em; } <div> <span>outer <span>inner</span> outer</span> </div> the result is: assuming that the browser's default font-size is 16px, the words “outer” would be rendered at 16px, but the word “inner” would be rendered at 25.6px.
... html { font-size: 62.5%; /* font-size 1em = 10px on default browser settings */ } span { font-size: 1.6rem; } then we apply this css to the same html, which looks like this: <span>outer <span>inner</span> outer</span> in this example, the words “outer inner outer” are all displayed at 16px (assuming that the browser's font-size has been left at the default value of 10px).

Audio and video manipulation - Developer guides
html we can set up our video player and <canvas> element like this: <video id="my-video" controls="true" width="480" height="270" crossorigin="anonymous"> <source src="https://udn.realityripple.com/samples/5b/8cd6da9c65.webm" type="video/webm"> <source src="https://udn.realityripple.com/samples/6f/08625b424a.m4v" type="video/mp4"> </video> <canvas id="my-canvas" width="480" height="270"></canvas> javascript this code handles altering the frames.
... html <video id="my-video" controls src="https://udn.realityripple.com/samples/6f/08625b424a.m4v"> </video> javascript var myvideo = document.getelementbyid('my-video'); myvideo.playbackrate = 2; playable code <video id="my-video" controls="true" width="480" height="270"> <source src="https://udn.realityripple.com/samples/5b/8cd6da9c65.webm" type="video/webm"> <source src="https://udn.realityripple.com/samples/6f/08625b424a.m4v" type="video/mp4"> </video> <div class="playa...
...lter); filter.connect(context.destination); // configure filter filter.type = "lowshelf"; filter.frequency.value = 1000; filter.gain.value = 25; playable code <video id="my-video" controls="true" width="480" height="270" crossorigin="anonymous"> <source src="https://udn.realityripple.com/samples/5b/8cd6da9c65.webm" type="video/webm"> <source src="https://udn.realityripple.com/samples/6f/08625b424a.m4v" type="video/mp4"> </video> <div class="playable-buttons"> <input id="edit" type="button" value="edit" /> <input id="reset" type="button" value="reset" /> </div> <textarea id="code" class="playable-code"> filter.type = "lowshelf"; filter.frequency.value = 1000; filter.gain.value = 25;</textarea> var context = new audiocontext(), audiosource = context.createmediaelementsourc...

<input type="image"> - HTML: Hypertext Markup Language
essential image input features let's look at a basic example that includes all the essential features you'd need to use (these work exactly the same as they do on the <img> element.): <input id="image" type="image" width="100" height="30" alt="login" src="/static/external/62/62ac2ecddbec0e0b540098c28451e57203e5cab46dfed7ab0115d5a659fcfb7b.png"> the src attribute is used to specify the path to the image you want to display in the button.
... html <form> <p>login to your account</p> <div> <label for="userid">user id</label> <input type="text" id="userid" name="userid"> </div> <div> <label for="pwd">password</label> <input type="password" id="pwd" name="pwd"> </div> <div> <input id="image" type="image" src="/static/external/62/62ac2ecddbec0e0b540098c28451e57203e5cab46dfed7ab0115d5a659fcfb7b.png" alt="login" width="100"> </div> </form> css and now some simple css to make the basic elements sit more neatly: div { margin-bottom: 10px; } label { display: inline-block; width: 70px; text-align: right; padding-right: 10px; } adjusting the image position and scaling in this example, we adapt the previous exam...
... html <form> <p>login to your account</p> <div> <label for="userid">user id</label> <input type="text" id="userid" name="userid"> </div> <div> <label for="pwd">password</label> <input type="password" id="pwd" name="pwd"> </div> <div> <input id="image" type="image" src="/static/external/62/62ac2ecddbec0e0b540098c28451e57203e5cab46dfed7ab0115d5a659fcfb7b.png" alt="login" width="200" height="100"> </div> </form> css div { margin-bottom: 10px; } label { display: inline-block; width: 70px; text-align: right; padding-right: 10px; } #image { object-position: right top; object-fit: contain; background-color: #ddd; } here, object-position is configured to draw...

HTTP Index - HTTP
62 access-control-request-method cors, http, reference, header the access-control-request-method request header is used by browsers when issuing a preflight request, to let the server know which http method will be used when the actual request is made.
... 161 index http, http header, index found 122 pages: 162 keep-alive general header, http, http header, reference the keep-alive general header allows the sender to hint about how the connection may be used to set a timeout and a maximum amount of requests.
... 262 501 not implemented http, server error, status code the hypertext transfer protocol (http) 501 not implemented server error response code means that the server does not support the functionality required to fulfill the request.

Array.prototype.reduceRight() - JavaScript
polyfill reduceright was added to the ecma-262 standard in the 5th edition; as such it may not be present in all implementations of the standard.
... // production steps of ecma-262, edition 5, 15.4.4.22 // reference: http://es5.github.io/#x15.4.4.22 if ('function' !== typeof array.prototype.reduceright) { array.prototype.reduceright = function(callback /*, initialvalue*/) { 'use strict'; if (null === this || 'undefined' === typeof this) { throw new typeerror('array.prototype.reduce called on null or undefined'); } if ('function' !== typeof callback) { throw new typeerror(callback + ' is not a function'); } var t = object(this), len = t.length >>> 0, k = len - 1, value; if (arguments.length >= 2) { value = arguments[1]; ...
... = (...args) => (value) => args.reduceright((acc, fn) => fn(acc), value) // increment passed number const inc = (n) => n + 1 // doubles the passed value const double = (n) => n * 2 // using composition function console.log(compose(double, inc)(2)); // 6 // using composition function console.log(compose(inc, double)(2)); // 5 specifications specification ecmascript (ecma-262)the definition of 'array.prototype.reduceright' in that specification.

Array.prototype.every() - JavaScript
(it is vacuously true that all elements of the empty set satisfy any given condition.) polyfill every was added to the ecma-262 standard in the 5th edition, and it may not be present in other implementations of the standard.
... this algorithm is exactly the one specified in ecma-262, 5th edition, assuming object and typeerror have their original values, and that callbackfn.call evaluates to the original value of function.prototype.call.
...----- // deleting items // --------------- arr = [1, 2, 3, 4]; arr.every( (elem, index, arr) => { arr.pop() console.log(`[${arr}][${index}] -> ${elem}`) return elem < 4 }) // loop runs for 2 iterations only, as the remaining // items are `pop()`ed off // // 1st iteration: [1,2,3][0] -> 1 // 2nd iteration: [1,2][1] -> 2 specifications specification ecmascript (ecma-262)the definition of 'array.prototype.every' in that specification.

Date.now() - JavaScript
polyfill this method was standardized in ecma-262 5th edition.
... // reduced time precision (2ms) in firefox 60 date.now() // 1519211809934 // 1519211810362 // 1519211811670 // ...
... specifications specification ecmascript (ecma-262)the definition of 'date.now' in that specification.

Date - JavaScript
instead, it is defined in ecma-262 that a maximum of ±100,000,000 (one hundred million) days relative to january 1, 1970 utc (that is, april 20, 271821 bce ~ september 13, 275760 ce) can be represented by the standard date object (equivalent to ±8,640,000,000,000,000 milliseconds).
... let today = new date() let birthday = new date('december 17, 1995 03:24:00') let birthday = new date('1995-12-17t03:24:00') let birthday = new date(1995, 11, 17) // the month is 0-indexed let birthday = new date(1995, 11, 17, 3, 24, 0) let birthday = new date(628021800000) // passing epoch timestamp to get date, month and year or time let [month, date, year] = ( new date() ).tolocaledatestring().split("/") let [hour, minute, second] = ( new date() ).tolocaletimestring().slice(0,7).split(":") two digit years map to 1900 – 1999 in order to create and get dates between the years 0 and 99 the date.prototype.setfullyear() and date.proto...
...(that's why this code uses math.floor(), and not math.round().) specifications specification ecmascript (ecma-262)the definition of 'date' in that specification.

Lexical grammar - JavaScript
see also the page about parseint() exponential the decimal exponential literal is specified by the following format: ben; where b is a base number (integer or floating), followed by e char (which serves as separator or exponent indicator) and n, which is exponent or power number – a signed integer (as per 2019 ecma-262 specs): 0e-5 // => 0 0e+5 // => 0 5e1 // => 50 175e-2 // => 1.75 1e3 // => 1000 1e-3 // => 0.001 binary binary number syntax uses a leading zero followed by a lowercase or uppercase latin letter "b" (0b or 0b).
... prior to the proposal to make all json text valid ecma-262, u+2028 <ls> and u+2029 <ps>, were also disallowed from appearing unescaped in string literals.
...these statements with "no lineterminator here" rules are: postfixexpressions (++ and --) continue break return yield, yield* module return a + b // is transformed by asi into return; a + b; specifications specification ecmascript (ecma-262)the definition of 'lexical grammar' in that specification.

Features restricted to secure contexts - Web security
api chrome edge safari firefox application cache restricted to secure contexts planned in chrome 70 deprecation planning started in february 2018 public interest on deprecation webkit bug 182442 restricted to secure contexts in firefox 62 geolocation restricted to secure contexts in 50 restricted to secure contexts in 10 restricted to secure contexts in 55 device orientaion / device motion deprecation warning deprecation warnings since 60.
... notifications restricted to secure contexts in chrome 62 restricted to secure contexts in firefox 67.
... registerprotocolhandler() restricted to secure contexts in firefox 62.

ECMAScript 2015 support in Mozilla - Archive of obsolete content
finally, ecma-262 edition 6 got officially approved and published as a standard on june 17, 2015 by the ecma general assembly.
... it will also appear as the international industry standard iso/iec 16262:2016.

Legacy layout methods - Learn web development
*/ .col.span4 { width: 300px; } .col.span5 { width: 380px; } .col.span6 { width: 460px; } .col.span7 { width: 540px; } .col.span8 { width: 620px; } .col.span9 { width: 700px; } .col.span10 { width: 780px; } .col.span11 { width: 860px; } .col.span12 { width: 940px; } with these classes created we can now lay out different width columns on the grid.
... 60 / 960 = 0.0625 we then move the decimal point 2 places giving us a percentage of 6.25%.

HTML table basics - Learn web development
look at the table below for example and find a jovian gas giant with 62 moons.
... earth 5.97 12,756 5514 9.8 24.0 149.6 15 1 our world mars 0.642 6,792 3933 3.7 24.7 227.9 -65 2 the red planet jovian planets gas giants jupiter 1898 142,984 1326 23.1 9.9 778.6 -110 67 the largest planet saturn 568 120,536 687 9.0 10.7 1433.5 -140 62 ice giants uranus 86.8 51,118 1271 8.7 17.2 2872.5 -195 27 neptune 102 49,528 1638 11.0 16.1 4495.1 -200 14 dwarf planets pluto 0.0146 2,370 2095 0.7 153.3 5906.4 -225 5 declassified as a planet in 2006, but this remains controversial.

Useful string methods - Learn web development
s="a11y-label">press esc to move focus away from the code area (tab inserts a tab character).</p> <textarea id="code" class="playable-code" style="height: 285px; width: 95%"> const list = document.queryselector('.output ul'); list.innerhtml = ''; let stations = ['man675847583748sjt567654;manchester piccadilly', 'gnf576746573fhdg4737dh4;greenfield', 'liv5hg65hd737456236dch46dg4;liverpool lime street', 'syb4f65hf75f736463;stalybridge', 'hud5767ghtyfyr4536dh45dg45dg3;huddersfield']; for (let i = 0; i < stations.length; i++) { let input = stations[i]; // write your code just below here let result = input; let listitem = document.createelement('li'); listitem.textcontent = result; list.appendchild(listitem); } </textar...
...'hide solution'; } else { textarea.value = userentry; solution.value = 'show solution'; } updatecode(); }); const jssolution = 'const list = document.queryselector(\'.output ul\');' + '\nlist.innerhtml = \'\';' + '\nlet stations = [\'man675847583748sjt567654;manchester piccadilly\',' + '\n \'gnf576746573fhdg4737dh4;greenfield\',' + '\n \'liv5hg65hd737456236dch46dg4;liverpool lime street\',' + '\n \'syb4f65hf75f736463;stalybridge\',' + '\n \'hud5767ghtyfyr4536dh45dg45dg3;huddersfield\'];' + '\n' + '\nfor (let i = 0; i < stations.length; i++) {' + '\n let input = stations[i];' + '\n let code = input.slice(0,3);' + '\n let semic = input.indexof(\';\');' + '\n let name = input.slice(semic + 1);' + '\n let result = co...

Mozilla Port Blocking
background on 08/15/2001, cert issued a vulnerability note vu#476267 for a "cross-protocol" scripting attack, known as the html form protocol attack which allowed sending arbitrary data to most tcp ports.
... more information nsioservice.cpp gbadportlist bug 83401 vulnerability note vu#476267 dougt@netscape.com original document information author(s): doug turner last updated date: august 15, 2007 copyright information: portions of this content are © 1998–2007 by individual mozilla.org contributors; content available under a creative commons license | details.

Investigating leaks using DMD heap scan mode
the result of that grep will contain output that looks something like this: cc-edges.15873.log:0x7f0897082c00 [rc=1285] nsglobalwindowinner # 2147483662 inner https://www.example.com/ * cc-edges.15873.log: the first part is the file name where it was found.
... the output will look something like this, after a message about loading progress: 0x7f0882fe3230 [fragmentorelement (xhtml) script https://www.example.com] --[[via hash] mlistenermanager]--> 0x7f0899b4e550 [eventlistenermanager] --[mlisteners event=onload listenertype=3 [i]]--> 0x7f0882ff8f80 [callbackobject] --[mincumbentglobal]--> 0x7f0897082c00 [nsglobalwindowinner # 2147483662 inner https://www.example.com] root 0x7f0882fe3230 is a ref counted object with 1 unknown edge(s).

TimerFirings logging
204 801266240[7f7c1f248000]: [7163] fn timer (one_shot 50 ms): [content] http://widgets.outbrain.com/outbrain.js:20:330 135 -495057024[7f74e105ba00]: [7108] fn timer (one_shot 4 ms): [content] https://self-repair.mozilla.org/repair/:7:13669 118 801266240[7f7c1f248000]: [7163] fn timer (one_shot 100 ms): [content] http://a.visualrevenue.com/vrs.js:6:9423 103 801266240[7f7c1f24800...
...0]: [7163] fn timer (one_shot 50 ms): [content] http://static.dynamicyield.com/scripts/12086/dy-min.js?v=12086:3:3389 94 801266240[7f7c1f248000]: [7163] fn timer (one_shot 50 ms): [content] https://ad.doubleclick.net/ddm/adi/n7921.1283839cadreon.com.au/b9038144.122190976;sz=300x600;click=http://pixel.mathtag.com/click/img?mt_aid=2744535504761193354&mt_id=1895890&mt_adid=148611&mt_sid=973379&mt_exid=9&mt_inapp=0&mt_uuid=353d5460-19f6-4400-9bbd-d0fcc3bcf595&mt_3pck=http%3a//beacon-apac-hkg1.rubiconproject.com/beacon/t/d1f9921d-4e47-448f-b6ba-36cae1c31b65/&redirect=;ord=2744535504761193354?:83:0 94 801266240[7f7c1f248000]: [7163] fn timer (one_shot 160 ms): nsbrowserstatusfilter::timeouthandler 92 -495057024[7f74e105ba00]: [7108] fn timer (one_shot 160 ms): ...

about:memory
tp://techcrunch.com/, id=20) │ ├──12.85 mb (06.69%) ++ top(http://arstechnica.com/, id=14) │ ├───6.40 mb (03.33%) ++ top(chrome://browser/content/browser.xul, id=3) │ └───3.59 mb (01.87%) ++ (4 tiny) ├───45.74 mb (23.84%) ++ js-non-window ├───33.73 mb (17.58%) ── heap-unclassified ├───22.51 mb (11.73%) ++ heap-overhead ├────6.62 mb (03.45%) ++ images ├────5.82 mb (03.03%) ++ workers/workers(chrome) ├────5.36 mb (02.80%) ++ (16 tiny) ├────4.07 mb (02.12%) ++ storage ├────2.74 mb (01.43%) ++ startup-cache └────2.16 mb (01.12%) ++ xpconnect some expertise is required to understand the full details here, but there are various things worth pointing out.
... 26.77 mb (100.0%) -- window-objects ├──14.59 mb (54.52%) -- layout │ ├───6.22 mb (23.24%) ── style-sets │ ├───4.00 mb (14.95%) ── pres-shell │ ├───1.79 mb (06.68%) ── frames │ ├───0.89 mb (03.33%) ── style-contexts │ ├───0.62 mb (02.33%) ── rule-nodes │ ├───0.56 mb (02.10%) ── pres-contexts │ ├───0.47 mb (01.75%) ── line-boxes │ └───0.04 mb (00.14%) ── text-runs ├───6.53 mb (24.39%) ── style-sheets ├───5.59 mb (20.89%) -- dom │ ├──3.39 mb (12.66%) ── element-nodes │ ├──1.56 mb (05.84%) ── text-nodes │ ├──0.54 mb ...

powermetrics
invocation: *** sampled system activity (fri sep 4 17:15:14 2015 +1000) (5009.63ms elapsed) *** *** running tasks *** name id cpu ms/s user% deadlines (<2 ms, 2-5 ms) wakeups (intr, pkg idle) gpu ms/s com.apple.terminal 293 447.66 274.83 120.35 221.74 firefox 84627 77.59 55.55 15.37 2.59 91.42 42.12 204.47 plugin-container 84628 377.22 37.18 43.91 18.56 178.65 75.85 17.29 terminal 694 9.86 79.94 0.00 0.00 4.39 2.20 0.00 powermetrics 84694 1.21 31.53 0.00 0.00 ...
... total w = _pkg_ (cores + _gpu_ + other) + _ram_ w #01 17.14 w = 14.98 ( 5.50 + 1.19 + 8.29) + 2.16 w 1 sample taken over a period of 30.000 seconds name id cpu ms/s user% deadlines (<2 ms, 2-5 ms) wakeups (intr, pkg idle) gpu ms/s com.google.chrome 500 439.64 585.35 218.62 19.17 google chrome helper 67319 284.75 83.03 296.67 0.00 454.05 172.74 0.00 google chrome helper 67304 55.23 64.83 0.03 0.00 9.43 4.33 19.17 google chrome 67301 63.77 68.09 29.46 0.13 76.11 22.26 0.00 google chrome helper ...

NSS_3.12.1_release_notes.html
bug 311432: ecc's ecl_use_fp code (for linux x86) fails pairwise consistency test bug 330622: certutil's usage messages incorrectly document certain options bug 330628: coreconf/linux.mk should _not_ default to x86 but result in an error if host is not recognized bug 359302: remove the sslsample code from nss source tree bug 372241: need more versatile form of cert_nametoascii bug 390296: nss ignores subject cn even when san contains no dnsname bug 401928: support generalized ...
... bug 439123: assertion failure in libpkix at shutdown bug 440062: incorrect list element count in pkix_list_appenditem function bug 442618: eliminate dead function cert_certpackagetype bug 443755: extra semicolon in pkm_tlskeyandmacderive makes conditional code unconditional bug 443760: extra semicolon in seqdatabase makes static analysis tool suspicious bug 448323: certutil -k doesn't report the token and slot names for found keys bug 448324: ocsp c...

NSS 3.14.3 release notes
this release is a patch release to address cve-2013-1620.
... notable changes in nss 3.14.3 cve-2013-1620 recent research by nadhem alfardan and kenny patterson has highlighted a weakness in the handling of cbc padding as used in ssl, tls, and dtls that allows an attacker to exploit timing differences in mac processing.

NSS 3.21.3 release notes
bug 1221620 - fixed a possible left-shift of a negative integer value when parsing der.
... bug 1206283 - fixed an out-of-bound read when parsing invalid utf-16.

NSS 3.23 release notes
the following ca certificates were removed cn = staat der nederlanden root ca sha-256 fingerprint: d4:1d:82:9e:8c:16:59:82:2a:f9:3f:ce:62:bf:fc:de:26:4f:c8:4e:8b:95:0c:5f:f2:75:d0:52:35:46:95:a3 cn = netlock minositett kozjegyzoi (class qa) tanusitvanykiado sha-256 fingerprint: e6:06:dd:ee:e2:ee:7f:5c:de:f5:d9:05:8f:f8:b7:d0:a9:f0:42:87:7f:6a:17:1e:d8:ff:69:60:e4:cc:5e:a5 cn = netlock kozjegyzoi (class a) tanusitvanykiado sha-256 fingerprint: 7f:12:cd:5f:7e:5e:29:0e:c7:d8:51:79:d5:b7:2c:2...
...5f:ba:75:b5:67:90:44:ee:0c:a2:6e:93:1f:74:4f:2f:33:cf the following ca certificates were added cn = szafir root ca2 sha-256 fingerprint: a1:33:9d:33:28:1a:0b:56:e5:57:d3:d3:2b:1c:e7:f9:36:7e:b0:94:bd:5f:a7:2a:7e:50:04:c8:de:d7:ca:fe cn = certum trusted network ca 2 sha-256 fingerprint: b6:76:f2:ed:da:e8:77:5c:d3:6c:b0:f6:3c:d1:d4:60:39:61:f4:9e:62:65:ba:01:3a:2f:03:07:b6:d0:b8:04 the following ca certificate had the email trust bit turned on cn = actalis authentication root ca sha-256 fingerprint: 55:92:60:84:ec:96:3a:64:b9:6e:2a:be:01:ce:0b:a8:6a:64:fb:fe:bc:c7:aa:b5:af:c1:55:b3:7f:d7:60:66 security fixes in nss 3.23 bug 1245528 / cve-2016-1950 - fixed a heap-based buffer overflow relate...

NSS 3.27 release notes
b:97:ab:6d:a3:e2:1c:10:68:b9:7d:55:57:5e:d0:e1:12:79:c1:1c:89:32 cn = juur-sk, o = as sertifitseerimiskeskus sha256 fingerprint: ec:c3:e9:c3:40:75:03:be:e0:91:aa:95:2f:41:34:8f:f8:8b:aa:86:3b:22:64:be:fa:c8:07:90:15:74:e9:39 cn = ebg elektronik sertifika hizmet sağlayıcısı sha-256 fingerprint: 35:ae:5b:dd:d8:f7:ae:63:5c:ff:ba:56:82:a8:f0:0b:95:f4:84:62:c7:10:8e:e9:a0:e5:29:2b:07:4a:af:b2 cn = s-trust authentication and encryption root ca 2005:pn sha-256 fingerprint: 37:d8:dc:8a:f7:86:78:45:da:33:44:a6:b1:ba:de:44:8d:8a:80:e4:7b:55:79:f9:6b:f6:31:76:8f:9f:30:f6 o = verisign, inc., ou = class 1 public primary certification authority sha-256 fingerprint: 51:84:7c:8c:bd:2e:9a:72:c9:1e:29:2d:2a:e2:47:d7:de...
...thority sha-256 fingerprint: 08:29:7a:40:47:db:a2:36:80:c7:31:db:6e:31:76:53:ca:78:48:e1:be:bd:3a:0b:01:79:a7:07:f9:2c:f1:78 cn = equifax secure ebusiness ca-1 sha-256 fingerprint: cf:56:ff:46:a4:a1:86:10:9d:d9:65:84:b5:ee:b5:8a:51:0c:42:75:b0:e5:f9:4f:40:bb:ae:86:5e:19:f6:73 cn = equifax secure global ebusiness ca-1 sha-256 fingerprint: 5f:0b:62:ea:b5:e3:53:ea:65:21:65:16:58:fb:b6:53:59:f4:43:28:0a:4a:fb:d1:04:d7:7d:10:f9:f0:4c:07 bugs fixed in nss 3.27 this bugzilla query returns all the bugs fixed in nss 3.27: https://bugzilla.mozilla.org/buglist.cgi?resolution=fixed&classification=components&query_format=advanced&product=nss&target_milestone=3.27 compatibility nss 3.27 shared libraries are backwards compatible with...

NSS 3.39 release notes
the following ca certificates were added: ou = globalsign root ca - r6 sha-256 fingerprint: 2cabeafe37d06ca22aba7391c0033d25982952c453647349763a3ab5ad6ccf69 cn = oiste wisekey global root gc ca sha-256 fingerprint: 8560f91c3624daba9570b5fea0dbe36ff11a8323be9486854fb3f34a5571198d the following ca certificate was removed: cn = comsign sha-256 fingerprint: ae4457b40d9eda96677b0d3c92d57b5177abd7ac1037958356d1e094518be5f2 the following ca certificates had the websites trust bit disabled: cn = certplus root ca g1 sha-256 fingerprint: 152a402bfcdf2cd548054d2275b39c...
...41e6445e74696c4cfbc9f80f543b7eabbb44b4ce6f787c6a9971c42f17 cn = opentrust root ca g1 sha-256 fingerprint: 56c77128d98c18d91b4cfdffbc25ee9103d4758ea2abad826a90f3457d460eb4 cn = opentrust root ca g2 sha-256 fingerprint: 27995829fe6a7515c1bfe848f9c4761db16c225929257bf40d0894f29ea8baf2 cn = opentrust root ca g3 sha-256 fingerprint: b7c36231706e81078c367cb896198f1e3208dd926949dd8f5709a410f75b6292 bugs fixed in nss 3.39 bug 1483128 - nss responded to an sslv2-compatible clienthello with a serverhello that had an all-zero random (cve-2018-12384) this bugzilla query returns all the bugs fixed in nss 3.39: https://bugzilla.mozilla.org/buglist.cgi?resolution=fixed&classification=components&query_format=advanced&pro...

NSS 3.41 release notes
new functions none notable changes in nss 3.41 the following ca certificates were added: cn = certigna root ca sha-256 fingerprint: d48d3d23eedb50a459e55197601c27774b9d7b18c94d5a059511a10250b93168 cn = gts root r1 sha-256 fingerprint: 2a575471e31340bc21581cbd2cf13e158463203ece94bcf9d3cc196bf09a5472 cn = gts root r2 sha-256 fingerprint: c45d7bb08e6d67e62e4235110b564e5f78fd92ef058c840aea4e6455d7585c60 cn = gts root r3 sha-256 fingerprint: 15d5b8774619ea7d54ce1ca6d0b0c403e037a917f131e8a04e1e6b7a71babce5 cn = gts root r4 sha-256 fingerprint: 71cca5391f9e794b04802530b363e121da8a3043bb26662fea4dca7fc951a4bd cn = uca global g2 root sha-256 fingerprint: 9bea11c976fe014764c1be56a6f914b5a560317abd9988393382e5161aa...
...-256 fingerprint: 6cc05041e6445e74696c4cfbc9f80f543b7eabbb44b4ce6f787c6a9971c42f17 cn = opentrust root ca g1 sha-256 fingerprint: 56c77128d98c18d91b4cfdffbc25ee9103d4758ea2abad826a90f3457d460eb4 cn = opentrust root ca g2 sha-256 fingerprint: 27995829fe6a7515c1bfe848f9c4761db16c225929257bf40d0894f29ea8baf2 cn = opentrust root ca g3 sha-256 fingerprint: b7c36231706e81078c367cb896198f1e3208dd926949dd8f5709a410f75b6292 bugs fixed in nss 3.41 bug 1412829, reject empty supported_signature_algorithms in certificate request in tls 1.2 bug 1485864 - cache side-channel variant of the bleichenbacher attack (cve-2018-12404) bug 1481271 - resend the same ticket in clienthello after helloretryrequest bug 1493769 - set session_id for...

NSS 3.43 release notes
note that while the mechanism is present, post-handshake authentication is currently not tls 1.3 compliant due to bug 1532312 notable changes in nss 3.43 the following ca certificates were added: cn = emsign root ca - g1 sha-256 fingerprint: 40f6af0346a99aa1cd1d555a4e9cce62c7f9634603ee406615833dc8c8d00367 cn = emsign ecc root ca - g3 sha-256 fingerprint: 86a1ecba089c4a8d3bbe2734c612ba341d813e043cf9e8a862cd5c57a36bbe6b cn = emsign root ca - c1 sha-256 fingerprint: 125609aa301da0a249b97a8239cb6a34216f44dcac9f3954b14292f2e8c8608f cn = emsign ecc root ca - c3 sha-256 fingerprint: bc4d809b15189d78db3e1d8cf4f9726a795da1643ca5f1358...
...e following ca certificates were removed: none bugs fixed in nss 3.43 bug 1528669 and bug 1529308 - improve gyp build system handling bug 1529950 and bug 1521174 - improve nss s/mime tests for thunderbird bug 1530134 - if docker isn't installed, try running a local clang-format as a fallback bug 1531267 - enable fips mode automatically if the system fips mode flag is set bug 1528262 - add a -j option to the strsclnt command to specify sigschemes bug 1513909 - add manual for nss-policy-check bug 1531074 - fix a deref after a null check in seckey_setpublicvalue bug 1517714 - properly handle esni with hrr bug 1529813 - expose hkdf-expand-label with mechanism bug 1535122 - align tls 1.3 hkdf trace levels bug 1530102 - use getentropy on compatible versions of freebsd.

NSS 3.45 release notes
bug 1550579 - replace arm32 curve25519 implementation with one from fiat-crypto bug 1551129 - support static linking on windows bug 1552262 - expose a function pk11_findrawcertswithsubject for finding certificates with a given subject on a given slot bug 1546229 - add ipsec ike support to softoken bug 1554616 - add support for the elbrus lcc compiler (<=1.23) bug 1543874 - expose an external clock for ssl this adds new experimental functions: ssl_settimefunc, ssl_createantireplaycontext, ssl_setantireplaycontext, and ssl_rel...
... certificate authority changes the following ca certificates were removed: bug 1552374 - cn = certinomis - root ca sha-256 fingerprint: 2a99f5bc1174b73cbb1d620884e01c34e51ccb3978da125f0e33268883bf4158 bugs fixed in nss 3.45 bug 1540541 - don't unnecessarily strip leading 0's from key material during pkcs11 import (cve-2019-11719) bug 1515342 - more thorough input checking (cve-2019-11729) bug 1552208 - prohibit use of rsassa-pkcs1-v1_5 algorithms in tls 1.3 (cve-2019-11727) bug 1227090 - fix a potential divide-by-zero in make...

NSS 3.46 release notes
notable changes in nss 3.46 certificate authority changes the following ca certificates were removed: bug 1574670 - remove expired class 2 primary root certificate sha-256 fingerprint: 0f993c8aef97baaf5687140ed59ad1821bb4afacf0aa9a58b5d57a338a3afbcb bug 1574670 - remove expired utn-userfirst-client root certificate sha-256 fingerprint: 43f257412d440d627476974f877da8f1fc2444565a367ae60eddc27a412531ae bug 1574670 - remove expired deutsche telekom root ca 2 root certificate sha-256 fingerprint: b6191a50d0c3977f7da99bcdaac86a227daeb9679ec70ba3b0c9d92271c170d3 bug 1566569 - remove swisscom root ca 2 root certificate sha-256 fingerprint: f09b122c7114f4a09bd4ea4f4a99d558b46e4c25cd81140d29c05613914c3841 ...
...hangs on windows x64 when building nss since changeset 9162c654d06915f0f15948fbf67d4103a229226f bug 1564875 - improve rebuilding with build.sh bug 1565243 - support tc_owner without email address in nss taskgraph bug 1563778 - increase maxruntime on mac taskcluster tools, ssl tests bug 1561591 - remove -wmaybe-uninitialized warning in tstclnt.c bug 1561587 - remove -wmaybe-uninitialized warning in lgattr.c bug 1561558 - remove -wmaybe-uninitialized ...

NSS tools : pk12util
id encryption algorithm: pkcs #12 v2 pbe with sha-1 and 3key triple des-cbc parameters: salt: 45:2e:6a:a0:03:4d:7b:a1:63:3c:15:ea:67:37:62:1f iteration count: 1 (0x1) certificate: data: version: 3 (0x2) serial number: 13 (0xd) signature algorithm: pkcs #1 sha-1 with rsa encryption issuer: "e=personal-freemail@thawte.com,cn=thawte personal freemail c a,ou=certification services division,o=thawte consulting,l=cape t own,st=western cape,c=za" alternatively, the -r prints the certificates and then exports them into separate d...
...id encryption algorithm: pkcs #12 v2 pbe with sha-1 and 3key triple des-cbc parameters: salt: 45:2e:6a:a0:03:4d:7b:a1:63:3c:15:ea:67:37:62:1f iteration count: 1 (0x1) certificate friendly name: thawte personal freemail issuing ca - thawte consulting certificate friendly name: thawte freemail member's thawte consulting (pty) ltd.

NSS Tools certutil
ain view, st=california, c=us validity: not before: thu mar 12 00:10:40 1998 not after: sat sep 12 00:10:40 1998 subject: cn=john smith, o=netscape, l=mountain view, st=california, c=us subject public key info: public key algorithm: pkcs #1 rsa encryption rsa public key: modulus: 00:da:53:23:58:00:91:6a:d1:a2:39:26:2f:06:3a: 38:eb:d4:c1:54:a3:62:00:b9:f0:7f:d6:00:76:aa: 18:da:6b:79:71:5b:d9:8a:82:24:07:ed:49:5b:33: bf:c5:79:7c:f6:22:a7:18:66:9f:ab:2d:33:03:ec: 63:eb:9d:0d:02:1b:da:32:ae:6c:d4:40:95:9f:b3: 44:8b:8e:8e:a3:ae:ad:08:38:4f:2e:53:e9:e1:3f: 8e:43:7f:51:61:b9:0f:f3:a6:25:1e:0b:93:74:8f: c6:13:a3:cd:51:40:84:0e:79:ea:b7:6b:d1:cc:6b: 78:d0:5d:da:be:2b:57:c2:6f exp...
...onent: 65537 (0x10001) signature algorithm: pkcs #1 md5 with rsa encryption signature: 44:15:e5:ae:c4:30:2c:cd:60:89:f1:1d:22:ed:5e:5b:10:c8: 7e:5f:56:8c:b4:00:12:ed:5f:a4:6a:12:c3:0d:01:03:09:f2: 2f:e7:fd:95:25:47:80:ea:c1:25:5a:33:98:16:52:78:24:80: c9:53:11:40:99:f5:bd:b8:e9:35:0e:5d:3e:38:6a:5c:10:d1: c6:f9:54:af:28:56:62:f4:2f:b3:9b:50:e1:c3:a2:ba:27:ee: 07:9f:89:2e:78:5c:6d:46:b6:5e:99:de:e6:9d:eb:d9:ff:b2: 5f:c6:f6:c6:52:4a:d4:67:be:8d:fc:dd:52:51:8e:a2:d7:15: 71:3e certificate trust flags: ssl flags: valid ca trusted ca email flags: valid ca trusted ca object signing flags: valid ca trusted ca validating a certificate this example validates a certificate: certutil -v -n jsmith@netscape.com -b 9803201212z -u sr -e ...

NSS tools : pk12util
id encryption algorithm: pkcs #12 v2 pbe with sha-1 and 3key triple des-cbc parameters: salt: 45:2e:6a:a0:03:4d:7b:a1:63:3c:15:ea:67:37:62:1f iteration count: 1 (0x1) certificate: data: version: 3 (0x2) serial number: 13 (0xd) signature algorithm: pkcs #1 sha-1 with rsa encryption issuer: "e=personal-freemail@thawte.com,cn=thawte personal freemail c a,ou=certification services division,o=thawte consulting,l=cape t own,st=western cape,c=za" ....
...id encryption algorithm: pkcs #12 v2 pbe with sha-1 and 3key triple des-cbc parameters: salt: 45:2e:6a:a0:03:4d:7b:a1:63:3c:15:ea:67:37:62:1f iteration count: 1 (0x1) certificate friendly name: thawte personal freemail issuing ca - thawte consulting certificate friendly name: thawte freemail member's thawte consulting (pty) ltd.

Creating JavaScript tests
please put tests of functionality into jstests even if related tests are in jit-tests, since jstests are closer to (and more easily converted to) test262 tests.
... (in fact, the test262 test suite is run as part of jstests.) practical differences between the two test suites: jstest new jstest files should be put the code in the appropriate subdirectory of js/src/tests/non262/, or, under some scenarios, contributed directly to the test262 repository.

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.
...(otherwise, spidermonkey converts primitive values to objects before invoking their methods, per ecma 262-3 §11.2.1.) error handling spidermonkey has two interdependent error-handling systems: javascript exceptions (which are not implemented with, or even compatible with, any kind of native c/c++ exception handling) and error reporting.

JS_IsConstructing
js_isconstructing has been removed in bug 918462.
... mxr id search for js_isconstructing bug 918462 ...

JS_ValueToBoolean
it implements the toboolean operator specified in ecma 262-3 §9.2.
...this is the behavior specified in ecma 262-3 §9.2.

JS_ValueToInt32
js_valuetoint32 is pre-ecma-262 edition 1, and rounds differently than js_valuetoecmaint32 and js::toint32.
...js::toint32 rounds as specified in ecma 262-3 §9.5, while this routine rounds by adding 0.5 to the converted float-point number and truncating the result at the decimal point.

JS_ValueToNumber
it implements the tonumber operator described in ecma 262-3 §9.3.
... if v is a string, conversion proceeds as specified in ecma 262-3 §9.3.1.

JS_ValueToString
it implements the tostring operator specified in ecma 262-3 §9.8.
... if v is a number, conversion succeeds, and the result is a string representation of that number as specified in ecma 262-3 §9.8.1.

jschar
(see bug 1063962.) as required by the ecmascript standard, ecma 262-3 §4.3.16", javascript strings are arbitrary sequences of 16-bit values.
... see also bug 1063962 ...

SpiderMonkey 1.8.5
it is much faster than spidermonkey 1.8, implements es-5 (ecma 262, 5th edition), and contains many new language and api features, described in detail below.
...comments in bug 628723 with regard to its usefulness are appreciated.

SpiderMonkey 1.8.7
it is much faster than spidermonkey 1.8, implements es-5 (ecma 262, 5th edition), and contains many new language and api features, described in detail below.
...comments in bug 628723 with regard to its usefulness are appreciated.

Running Automated JavaScript Tests
now that the full set of test262 tests is included in the tree, jstests take a long time to complete.
... for a smoke test or if you are not changing language-level functionality, you may wish to use jstests.py path_to_js_shell --exclude=test262 other options allow you to show the test command lines being run, command output and return codes, run tests named in a given file, exclude tests named in a given file, hide the progress bar, change the timeout, run skipped tests, print output in tinderbox format, run a test in the debugger, or run tests in valgrind.

Redis Tips
> r.zrevrange('last-login', 0, -1, 'withscores', print); ["lloyd", "1339627441.115", "zcarter", "1339627437.7579999", "jparsons", "1339627432.928"] awesome.
... for example, to see everyone who's logged in in the last hour, you could do: > var an_hour_ago = now() - (60 * 60); > r.zrevrangebyscore('last-login', an_hour_ago, infinity, print); here are two ways to get the last person who logged in: > r.zrevrange('last-login', 0, 0, print); ["lloyd"] > r.zrevrangebyscore('last-login', infinity, 0, 'withscores', 'limit', 0, 1, print); ["lloyd", "1339627441.115"] timeout keys you can set an expiration date on keys in redis.

HOWTO
der;1"] .getservice(components.interfaces.mozijssubscriptloader); loader.loadsubscript("chrome://myall/content/file.jsm"); see: http://mxr.mozilla.org/comm-central/...figutils.js#54 solution 2 append the following at the top of your js file which you want to run in xpcshell { // <https://developer.mozilla.org/en/xpconnect/xpcshell/howto> // <https://bugzilla.mozilla.org/show_bug.cgi?id=546628> let cc = components.classes; let ci = components.interfaces; // register resource://app/ uri let ios = cc["@mozilla.org/network/io-service;1"] .getservice(ci.nsiioservice); let reshandler = ios.getprotocolhandler("resource") .queryinterface(ci.nsiresprotocolhandler); let mozdir = cc["@mozilla.org/file/directory_service;1"] .getservice(ci.nsiproperties) .get("c...
...urprocd", ci.nsilocalfile); let mozdiruri = ios.newfileuri(mozdir); reshandler.setsubstitution("app", mozdiruri); // register chrome://* uris let cr = cc["@mozilla.org/chrome/chrome-registry;1"] .getservice(ci.nsichromeregistry); cr.checkfornewchrome(); } bug 546628 would make this unnecessary.

Index - Firefox Developer Tools
61 examine event listeners guide, inspector, tools the inspector shows the word "event" next to elements in the html pane, that have event listeners bound to them: 62 examine and edit css guide, inspector, tools you can examine and edit css in the inspector's css pane.
... 102 rulers devtools, firefox, rulers, tools you can overlay horizontal and vertical rulers on a web page: 103 settings beginning with firefox 62, the icon to open developer tools settings has been moved into a menu accessed by clicking/touching ...

Migrating from Firebug - Firefox Developer Tools
it is currently missing the preview for html, xml and svg, though, which is tracked in bug 1247392 and bug 1262796, but when you click on the url of the request you switch to the network monitor, which has a preview tab.
...the style editor in the devtools also provides a way to search within a style sheet, though there is currently no option to search within multiple sheets (see bug 889571) and also not via a regular expression (see bug 1362030.

Settings - Firefox Developer Tools
opening settings beginning with firefox 62, the icon to open developer tools settings has been moved into a menu accessed by clicking/touching ...
... as of firefox 62, if the option to "select an iframe as the currently targeted document" is checked, the icon will appear in the toolbar while the settings tab is displayed, even if the current page doesn't include any iframes.

The JavaScript input interpreter - Firefox Developer Tools
help()deprecated since gecko 62 :help displays help text.
... :screenshot new in firefox 62.

Applying styles and colors - Web APIs
function draw() { var ctx = document.getelementbyid('canvas').getcontext('2d'); // create gradients var radgrad = ctx.createradialgradient(45, 45, 10, 52, 50, 30); radgrad.addcolorstop(0, '#a7d30c'); radgrad.addcolorstop(0.9, '#019f62'); radgrad.addcolorstop(1, 'rgba(1, 159, 98, 0)'); var radgrad2 = ctx.createradialgradient(105, 105, 20, 112, 120, 50); radgrad2.addcolorstop(0, '#ff5f98'); radgrad2.addcolorstop(0.75, '#ff0188'); radgrad2.addcolorstop(1, 'rgba(255, 1, 136, 0)'); var radgrad3 = ctx.createradialgradient(95, 15, 15, 102, 20, 40); radgrad3.addcolorstop(0, '#00c9ff'); radgrad3.addcolorstop(0.8, '#00...
...this isn't very obvious from the code because it uses two different css color methods as a demonstration, but in the first gradient #019f62 = rgba(1,159,98,1).

Drawing shapes with canvas - Web APIs
<html> <body onload="draw();"> <canvas id="canvas" width="150" height="150"></canvas> </body> </html> function draw() { var canvas = document.getelementbyid('canvas'); if (canvas.getcontext) { var ctx = canvas.getcontext('2d'); // quadratric curves example ctx.beginpath(); ctx.moveto(75, 25); ctx.quadraticcurveto(25, 25, 25, 62.5); ctx.quadraticcurveto(25, 100, 50, 100); ctx.quadraticcurveto(50, 120, 30, 125); ctx.quadraticcurveto(60, 120, 65, 100); ctx.quadraticcurveto(125, 100, 125, 62.5); ctx.quadraticcurveto(125, 25, 75, 25); ctx.stroke(); } } screenshotlive sample cubic bezier curves this example draws a heart using cubic bézier curves.
... <html> <body onload="draw();"> <canvas id="canvas" width="150" height="150"></canvas> </body> </html> function draw() { var canvas = document.getelementbyid('canvas'); if (canvas.getcontext) { var ctx = canvas.getcontext('2d'); // cubic curves example ctx.beginpath(); ctx.moveto(75, 40); ctx.beziercurveto(75, 37, 70, 25, 50, 25); ctx.beziercurveto(20, 25, 20, 62.5, 20, 62.5); ctx.beziercurveto(20, 80, 40, 102, 75, 120); ctx.beziercurveto(110, 102, 130, 80, 130, 62.5); ctx.beziercurveto(130, 62.5, 130, 25, 100, 25); ctx.beziercurveto(85, 25, 75, 37, 75, 40); ctx.fill(); } } screenshotlive sample rectangles in addition to the three methods we saw in drawing rectangles, which draw rectangular shapes directly to the canvas, there's ...

How whitespace is handled by HTML, CSS, and in the DOM - Web APIs
*/ function is_all_ws( nod ) { // use ecma-262 edition 3 string and regexp features return !(/[^\t\n\r ]/.test(nod.textcontent)); } /** * determine if a node should be ignored by the iterator functions.
... */ function data_of( txt ) { var data = txt.textcontent; // use ecma-262 edition 3 string and regexp features data = data.replace(/[\t\n\r ]+/g, " "); if (data.charat(0) == " ") data = data.substring(1, data.length); if (data.charat(data.length - 1) == " ") data = data.substring(0, data.length - 1); return data; } example the following code demonstrates the use of the functions above.

Transcoding assets for Media Source Extensions - Web APIs
run the following commands (shown with sample output): $ python mp4-dash-encode.py -b 5 -v bunny_fragmented.mp4 encoding 5 bitrates, min bitrate = 500.0 max bitrate = 2000.0 media source: video: resolution=640x360 encoding bitrate: 500, resolution: 256x144 encoding bitrate: 875, resolution: 384x216 encoding bitrate: 1250, resolution: 480x270 encoding bitrate: 1625, resolution: 560x316 encoding bitrate: 2000, resolution: 640x360 $ python mp4-dash.py video_0* parsing media file 1: video_00500.mp4 parsing media file 2: video_00875.mp4 parsing media file 3: video_01250.mp4 parsing media file 4: video_01625.mp4 parsing media file 5: video_02000.mp4 splitting media file (audio) video_00500.mp4 splitting media file (video) video_00500.mp4 splitting media file (...
...video) video_00875.mp4 splitting media file (video) video_01250.mp4 splitting media file (video) video_01625.mp4 splitting media file (video) video_02000.mp4 $ tree -l 2 output output ├── audio │ └── und ├── stream.mpd └── video ├── 1 ├── 2 ├── 3 ├── 4 └── 5 8 directories, 1 file note: mp4-dash-encode.py does not display ffmpeg error messages.

Performance.timeOrigin - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internettimeorigin experimentalchrome full support 62edge full support 16firefox full support 53ie ?
... opera full support 49safari no support nowebview android full support 62chrome android full support 62firefox android full support 53opera android full support 46safari ios no support nosamsung internet android full support 8.0legend full support full support no support no support ...

Auto-placement in CSS Grid Layout - CSS: Cascading Style Sheets
th: 800px; } .wrapper li { border: 1px solid #ccc; } .wrapper li.landscape { grid-column-end: span 2; } .wrapper li img { display: block; object-fit: cover; width: 100%; height: 100%; } <ul class="wrapper"> <li><img src="https://udn.realityripple.com/samples/72/ab41das78e.png" alt="placeholder"></li> <li class="landscape"><img src="https://udn.realityripple.com/samples/62/643f590dbc.png" alt="placeholder"></li> <li class="landscape"><img src="https://udn.realityripple.com/samples/62/643f590dbc.png" alt="placeholder"></li> <li class="landscape"><img src="https://udn.realityripple.com/samples/62/643f590dbc.png" alt="placeholder"></li> <li><img src="https://udn.realityripple.com/samples/72/ab41das78e.png" alt="placeholder"></li> <li><img src="https://udn.
...realityripple.com/samples/72/ab41das78e.png" alt="placeholder"></li> <li class="landscape"><img src="https://udn.realityripple.com/samples/62/643f590dbc.png" alt="placeholder"></li> <li><img src="https://udn.realityripple.com/samples/72/ab41das78e.png" alt="placeholder"></li> <li><img src="https://udn.realityripple.com/samples/72/ab41das78e.png" alt="placeholder"></li> <li><img src="https://udn.realityripple.com/samples/72/ab41das78e.png" alt="placeholder"></li> </ul> auto-placement can also help you lay out interface items which do have logical order.

font-stretch - CSS: Cascading Style Sheets
keyword to numeric mapping the table below shows the mapping between keyword values and numeric percentages: keyword percentage ultra-condensed 50% extra-condensed 62.5% condensed 75% semi-condensed 87.5% normal 100% semi-expanded 112.5% expanded 125% extra-expanded 150% ultra-expanded 200% description some font families offer additional faces in which the characters are narrower than the normal face (condensed faces) or wider than the normal face (expanded faces).
... the table below demonstrates the effect of supplying various different percentage values of font-stretch on two different fonts: 50% 62.5% 75% 87.5% 100% 112.5% 125% 150% 200% helvetica neue league mono variable helvetica neue, which is installed by default on macos, has a single condensed face in addition to the normal face.

Setting up adaptive streaming media sources - Developer guides
mediapresentationduration="pt0h9m56.46s"> <baseurl> http://example.com/segments </baseurl> <period start="pt0s"> <adaptationset bitstreamswitching="true"> <representation id="0" codecs="avc1" mimetype="video/mp4" width="320" height="240" startwithsap="1" bandwidth="46986"> <segmentbase> <initialization sourceurl="main/news100/1.m4s" range="0-862"/> </segmentbase> <segmentlist duration="1"> <segmenturl media="main/news100/2.m4s" mediarange="863-7113"/> <segmenturl media="main/news100/3.m4s" mediarange="7114-14104"/> <segmenturl media="main/news100/4.m4s" mediarange="14105-17990"/> </segmentlist> </representation> <representation id="1" codecs="avc1" mimetyp...
...e="video/mp4" width="320" height="240" startwithsap="1" bandwidth="91932"> <segmentbase> <initialization sourceurl="main/news200/1.m4s" range="0-864"/> </segmentbase> <segmentlist duration="1"> <segmenturl media="main/news200/2.m4s" mediarange="865-11523"/> <segmenturl media="main/news200/3.m4s" mediarange="11524-25621"/> <segmenturl media="main/news200/4.m4s" mediarange="25622-33693"/> </segmentlist> </representation> <representation id="1" codecs="avc1" mimetype="video/mp4" width="320" height="240" startwithsap="1" bandwidth="270370"> <segmentbase> <initialization sourceurl="main/news300/1.m4s" range="0-865"/> </segmentbase> <segmentlist duratio...

Video player styling basics - Developer guides
s mentioned earlier, a data-state attribute is now used to indicate whether the video controls are visible or not and these also need to be styled: .controls[data-state=hidden] { display:none; } .controls[data-state=visible] { display:block; } there are a number of properties that also need to be set for all elements within the video controls: .controls > * { float:left; width:3.90625%; height:100%; margin-left:0.1953125%; display:block; } .controls > *:first-child { margin-left:0; } all elements are floated left, as they are to be aligned next to one another, and each element is set to have a width of nearly 4% (again the actual value was calculated based on the required dimensions of the buttons), and a height of 100%.
... the <div> container for the <progress> element also requires some specific settings; it is set to be much wider than the other child elements and its cursor value is set to be pointer: .controls .progress { cursor:pointer; width:75.390625%; } buttons the first major styling task to tackle is to make the video control's buttons actually look like and act like real buttons.

<details>: The Details disclosure element - HTML: Hypertext Markup Language
css details { font: 16px "open sans", calibri, sans-serif; width: 620px; } details > summary { padding: 2px 6px; width: 15em; background-color: #ddd; border: none; box-shadow: 3px 3px 4px black; cursor: pointer; } details > p { border-radius: 0 0 10px 10px; background-color: #ddd; padding: 2px 6px; margin: 0; box-shadow: 3px 3px 4px black; } this css creates a look similar to a tabbed interface, where clicking the tab opens it to reveal i...
... css details { font: 16px "open sans", calibri, sans-serif; width: 620px; } details > summary { padding: 2px 6px; width: 15em; background-color: #ddd; border: none; box-shadow: 3px 3px 4px black; cursor: pointer; list-style: none; } details > summary::-webkit-details-marker { display: none; } details > p { border-radius: 0 0 10px 10px; background-color: #ddd; padding: 2px 6px; margin: 0; box-shadow: 3px 3px 4px black; } this css creat...

<video>: The Video Embed element - HTML: Hypertext Markup Language
hosted by archive.org --> <!-- poster from peach.blender.org --> <video controls src="https://archive.org/download/bigbuckbunny_124/content/big_buck_bunny_720p_surround.mp4" poster="https://peach.blender.org/wp-content/uploads/title_anouncement.jpg?x11217" width="620"> sorry, your browser doesn't support embedded videos, but don't worry, you can <a href="https://archive.org/details/bigbuckbunny_124">download it</a> and watch it with your favorite video player!
... <!-- using multiple sources as fallbacks for a video tag --> <!-- 'elephants dream' by orange open movie project studio, licensed under cc-3.0, hosted by archive.org --> <!-- poster hosted by wikimedia --> <video width="620" controls poster="https://upload.wikimedia.org/wikipedia/commons/e/e8/elephants_dream_s5_both.jpg" > <source src="https://archive.org/download/elephantsdream/ed_1024_512kb.mp4" type="video/mp4"> <source src="https://archive.org/download/elephantsdream/ed_hd.ogv" type="video/ogg"> <source src="https://archive.org/download/elephantsdream/ed_hd.avi" type="video/avi">...

HTML documentation index - HTML: Hypertext Markup Language
62 <aside>: the aside element element, html, html sections, html5, html:flow content, html:palpable content, html:sectioning content, reference, web the html <aside> element represents a portion of a document whose content is only indirectly related to the document's main content.
... 162 <nav>: the navigation section element element, html, html sections, links, navigation, reference, sections, web, nav the html <nav> element represents a section of a page whose purpose is to provide navigation links, either within the current document or to other documents.

Firefox user agent string reference - HTTP
tring 1.0 (webview mobile) mozilla/5.0 (linux; android 7.0) applewebkit/537.36 (khtml, like gecko) version/4.0 focus/1.0 chrome/59.0.3029.83 mobile safari/537.36 1.0 (webview tablet) mozilla/5.0 (linux; android 7.0) applewebkit/537.36 (khtml, like gecko) version/4.0 focus/1.0 chrome/59.0.3029.83 safari/537.36 6.0 (geckoview) mozilla/5.0 (android 7.0; mobile; rv:62.0) gecko/62.0 firefox/62.0 klar for android since version 4.1, klar for android uses the same ua string as focus for android.
... klar version (rendering engine) user agent string 1.0 (webview) mozilla/5.0 (linux; android 7.0) applewebkit/537.36 (khtml, like gecko) version/4.0 klar/1.0 chrome/58.0.3029.83 mobile safari/537.36 4.1+ (webview) mozilla/5.0 (linux; android 7.0) applewebkit/537.36 (khtml, like gecko) version/4.0 focus/4.1 chrome/62.0.3029.83 mobile safari/537.36 6.0+ (geckoview) mozilla/5.0 (android 7.0; mobile; rv:62.0) gecko/62.0 firefox/62.0 focus for ios version 7 of focus for ios uses a user agent string with the following format: mozilla/5.0 (iphone; cpu iphone os 12_1 like mac os x) applewebkit/605.1.15 (khtml, like gecko) fxios/7.0.4 mobile/16b91 safari/605.1.15 note: this user agent was retrie...

HTTP resources and specifications - HTTP
http/1.1): range requests proposed standard rfc 7234 hypertext transfer protocol (http/1.1): caching proposed standard rfc 5861 http cache-control extensions for stale content informational rfc 8246 http immutable responses proposed standard rfc 7235 hypertext transfer protocol (http/1.1): authentication proposed standard rfc 6265 http state management mechanism defines cookies proposed standard draft spec cookie prefixes ietf draft draft spec same-site cookies ietf draft draft spec deprecate modification of 'secure' cookies from non-secure origins ietf draft rfc 2145 use and interpretation of http version numbers informational rfc 6585 add...
...ifier (uri): generic syntax internet standard rfc 5988 web linking defines the link header proposed standard experimental spec hypertext transfer protocol (http) keep-alive header informational (expired) draft spec http client hints ietf draft rfc 7578 returning values from forms: multipart/form-data proposed standard rfc 6266 use of the content-disposition header field in the hypertext transfer protocol (http) proposed standard rfc 2183 communicating presentation information in internet messages: the content-disposition header field only a subset of syntax of the content-disposition header can be used in the context of http messages.

About JavaScript - JavaScript
the first ever javascript was created by brendan eich at netscape, and has since been updated to conform to ecma-262 edition 5 and later versions.
...like spidermonkey, rhino is ecma-262 edition 5 compliant.

Introduction - JavaScript
the ecmascript standard is documented in the ecma-262 specification.
... the ecma-262 standard is also approved by the iso (international organization for standardization) as iso-16262.

Arrow function expressions - JavaScript
https://www.ecma-international.org/ecma-262/10.0/index.html#sec-strict-mode-code https://www.ecma-international.org/ecma-262/10.0/index.html#sec-arrow-function-definitions-runtime-semantics-evaluation correction: end invoked through call or apply since arrow functions do not have their own this, the methods call() and apply() can only pass in parameters.
...}); // parameterless arrow functions that are visually easier to parse settimeout( () => { console.log('i happen sooner'); settimeout( () => { // deeper code console.log('i happen later'); }, 1); }, 1); specifications specification ecmascript (ecma-262)the definition of 'arrow function definitions' in that specification.

arguments[@@iterator]() - JavaScript
syntax arguments[symbol.iterator]() examples iteration using for...of loop function f() { // your browser must support for..of loop // and let-scoped variables in for loops for (let letter of arguments) { console.log(letter); } } f('w', 'y', 'k', 'o', 'p'); specifications specification ecmascript (ecma-262)the definition of 'createunmappedargumentsobject' in that specification.
... ecmascript (ecma-262)the definition of 'createmappedargumentsobject' in that specification.

Array.prototype.reduce() - JavaScript
polyfill // production steps of ecma-262, edition 5, 15.4.4.21 // reference: http://es5.github.io/#x15.4.4.21 // https://tc39.github.io/ecma262/#sec-array.prototype.reduce if (!array.prototype.reduce) { object.defineproperty(array.prototype, 'reduce', { value: function(callback /*, initialvalue*/) { if (this === null) { throw new typeerror( 'array.prototype.reduce ' + 'called on null or undefined' ); ...
...ck, thisarg) { return this.reduce(function(mappedarray, currentvalue, index, array) { mappedarray[index] = callback.call(thisarg, currentvalue, index, array) return mappedarray }, []) } } [1, 2, , 3].mapusingreduce( (currentvalue, index, array) => currentvalue + index + array.length ) // [5, 7, , 10] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.reduce()' in that specification.

Array.prototype.find() - JavaScript
however, you can polyfill array.prototype.find with the following snippet: // https://tc39.github.io/ecma262/#sec-array.prototype.find if (!array.prototype.find) { object.defineproperty(array.prototype, 'find', { value: function(predicate) { // 1.
...ue ', value); }); // expected output: // deleting array[5] with value 5 // visited index 0 with value 0 // visited index 1 with value 1 // visited index 2 with value undefined // visited index 3 with value undefined // visited index 4 with value undefined // visited index 5 with value undefined // visited index 6 with value 6 specifications specification ecmascript (ecma-262)the definition of 'array.prototype.find' in that specification.

Array.prototype.findIndex() - JavaScript
polyfill // https://tc39.github.io/ecma262/#sec-array.prototype.findindex if (!array.prototype.findindex) { object.defineproperty(array.prototype, 'findindex', { value: function(predicate) { // 1.
...7) find index using arrow function the following example finds the index of a fruit using an arrow function: const fruits = ["apple", "banana", "cantaloupe", "blueberries", "grapefruit"]; const index = fruits.findindex(fruit => fruit === "blueberries"); console.log(index); // 3 console.log(fruits[index]); // blueberries specifications specification ecmascript (ecma-262)the definition of 'array.prototype.findindex' in that specification.

Date.prototype.getTime() - JavaScript
// reduced time precision (2ms) in firefox 60 new date().gettime(); // 1519211809934 // 1519211810362 // 1519211811670 // ...
... var end, start; start = new date(); for (var i = 0; i < 1000; i++) { math.sqrt(i); } end = new date(); console.log('operation took ' + (end.gettime() - start.gettime()) + ' msec'); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.gettime' in that specification.

Date.parse() - JavaScript
however, invalid values in date strings not recognized as simplified iso format as defined by ecma-262 may or may not result in nan, depending on the browser and values provided, e.g.: // non-iso string with invalid date values new date('23/25/2014'); will be treated as a local date of 25 november, 2015 in firefox 30 and an invalid date in safari 7.
... specifications specification ecmascript (ecma-262)the definition of 'date.parse' in that specification.

Date.prototype.setDate() - JavaScript
examples using setdate() var thebigday = new date(1962, 6, 7); // 1962-07-07 (7th of july 1962) thebigday.setdate(24); // 1962-07-24 (24th of july 1962) thebigday.setdate(32); // 1962-08-01 (1st of august 1962) thebigday.setdate(22); // 1962-08-22 (22th of august 1962) thebigday.setdate(0); // 1962-07-31 (31th of july 1962) thebigday.setdate(98); // 1962-10-06 (6th of october 1962) thebigday.setdate(-50); // 1962-08-11 (11th of august 1962) s...
...pecifications specification ecmascript (ecma-262)the definition of 'date.prototype.setdate' in that specification.

Date.prototype.toDateString() - JavaScript
the todatestring() method is especially useful because compliant engines implementing ecma-262 may differ in the string obtained from tostring() for date objects, as the format is implementation-dependent and simple string slicing approaches may not produce consistent results across multiple engines.
... specifications specification ecmascript (ecma-262)the definition of 'date.prototype.todatestring' in that specification.

Date.prototype.toISOString() - JavaScript
polyfill this method was standardized in ecma-262 5th edition.
... specifications specification ecmascript (ecma-262)the definition of 'date.prototype.toisostring' in that specification.

Date.prototype.toString() - JavaScript
date.prototype.tostring() returns a string representation of the date in the format specified in ecma-262 which can be summarised as: week day: 3 letter english week day name, e.g.
... examples using tostring() the following assigns the tostring() value of a date object to myvar: var x = new date(); var myvar = x.tostring(); // assigns a string value to myvar in the same format as: // mon sep 08 1998 14:36:22 gmt-0700 (pdt) specifications specification ecmascript (ecma-262)the definition of 'date.prototype.tostring' in that specification.

Date.prototype.toTimeString() - JavaScript
the totimestring() method is especially useful because compliant engines implementing ecma-262 may differ in the string obtained from tostring() for date objects, as the format is implementation-dependent; simple string slicing approaches may not produce consistent results across multiple engines.
... examples a basic usage of totimestring() var d = new date(1993, 6, 28, 14, 39, 7); console.log(d.tostring()); // wed jul 28 1993 14:39:07 gmt-0600 (pdt) console.log(d.totimestring()); // 14:39:07 gmt-0600 (pdt) specifications specification ecmascript (ecma-262)the definition of 'date.prototype.totimestring' in that specification.

Date.prototype.toUTCString() - JavaScript
based on rfc7231 and modified according to ecma-262 toutcstring, it can have negative values in the 2021 version the source for this interactive example is stored in a github repository.
... examples using toutcstring() let today = new date('wed, 14 jun 2017 00:00:00 pdt'); let utcstring = today.toutcstring(); // wed, 14 jun 2017 07:00:00 gmt specifications specification ecmascript (ecma-262)the definition of 'date.prototype.toutcstring' in that specification.

EvalError - JavaScript
although ecma-262 specifies that evalerror should provide its own message property, in spidermonkey, it inherits error.prototype.message.
...lerror); // true console.log(e.message); // "hello" console.log(e.name); // "evalerror" console.log(e.filename); // "somefile.js" console.log(e.linenumber); // 10 console.log(e.columnnumber); // 0 console.log(e.stack); // "@scratchpad/2:2:9\n" } specifications specification ecmascript (ecma-262)the definition of 'evalerror' in that specification.

JSON - JavaScript
...but only in javascript engines that have implemented the proposal to make all json text valid ecma-262.
... examples example json { "browsers": { "firefox": { "name": "firefox", "pref_url": "about:config", "releases": { "1": { "release_date": "2004-11-09", "status": "retired", "engine": "gecko", "engine_version": "1.7" } } } } } specifications specification ecmascript (ecma-262)the definition of 'json' in that specification.

Map.prototype.delete() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'map.prototype.delete' in that specification.
... ecmascript 2015 (6th edition, ecma-262)the definition of 'map.prototype.delete' in that specification.

Math.atan2() - JavaScript
examples using math.atan2() math.atan2(90, 15); // 1.4056476493802699 math.atan2(15, 90); // 0.16514867741462683 math.atan2(±0, -0); // ±pi.
... specifications specification ecmascript (ecma-262)the definition of 'math.atan2' in that specification.

Math.pow() - JavaScript
examples using math.pow() // simple math.pow(7, 2); // 49 math.pow(7, 3); // 343 math.pow(2, 10); // 1024 // fractional exponents math.pow(4, 0.5); // 2 (square root of 4) math.pow(8, 1/3); // 2 (cube root of 8) math.pow(2, 0.5); // 1.4142135623730951 (square root of 2) math.pow(2, 1/3); // 1.2599210498948732 (cube root of 2) // signed exponents math.pow(7, -2); // 0.02040816326530612 (1/49) math.pow(8, -1/3); // 0.5 // signed bases math.pow(-7, 2); // 49 (squares are positive) math.pow(-7, 3); // -343 (cubes can be negative) math.pow(-7, 0.5); // nan (negative numbers don't have a real square root) // due to "even" and "odd" roo...
...ts laying close to each other, // and limits in the floating number precision, // negative bases with fractional exponents always return nan math.pow(-7, 1/3); // nan specifications specification ecmascript (ecma-262)the definition of 'math.pow' in that specification.

Number.prototype.toLocaleString() - JavaScript
a check that works in all hosts, including those supporting ecma-262 prior to ed 5.1, is to test for the features specified in ecma-402 that are required to support regional options for number.prototype.tolocalestring directly: function tolocalestringsupportsoptions() { return !!(typeof intl == 'object' && intl && typeof intl.numberformat == 'function'); } this tests for a global intl object, checks that it's not null and that it has a numberformat property t...
...e with options for number formatting var num = 30000.65; console.log(num.tolocalestring(undefined, {minimumfractiondigits: 2, maximumfractiondigits: 2})); // → "30,000.65" where english is the default language, or // → "30.000,65" where german is the default language, or // → "30 000,65" where french is the default language specifications specification ecmascript (ecma-262)the definition of 'number.prototype.tolocalestring' in that specification.

Number.prototype.toPrecision() - JavaScript
ecma-262 only requires a precision of up to 21 significant digits.
...oprecision()) // logs '0.000123' console.log(numobj.toprecision(5)) // logs '0.00012300' console.log(numobj.toprecision(2)) // logs '0.00012' console.log(numobj.toprecision(1)) // logs '0.0001' // note that exponential notation might be returned in some circumstances console.log((1234.5).toprecision(2)) // logs '1.2e+3' specifications specification ecmascript (ecma-262)the definition of 'number.prototype.toprecision' in that specification.

RangeError - JavaScript
although ecma-262 specifies that rangeerror should provide its own message property, in spidermonkey, it inherits error.prototype.message.
...meric values) function check(value) { if(["apple", "banana", "carrot"].includes(value) === false) { throw new rangeerror('the argument must be an "apple", "banana", or "carrot".') } } try { check("cabbage") } catch(error) { if(error instanceof rangeerror) { // handle the error } } specifications specification ecmascript (ecma-262)the definition of 'rangeerror' in that specification.

ReferenceError - JavaScript
although ecma-262 specifies that referenceerror should provide its own message property, in spidermonkey, it inherits error.prototype.message.
...ssage) // "hello" console.log(e.name) // "referenceerror" console.log(e.filename) // "somefile.js" console.log(e.linenumber) // 10 console.log(e.columnnumber) // 0 console.log(e.stack) // "@scratchpad/2:2:9\n" } specifications specification ecmascript (ecma-262)the definition of 'referenceerror' in that specification.

SyntaxError - JavaScript
although ecma-262 specifies that syntaxerror should provide its own message property, in spidermonkey, it inherits error.prototype.message.
....error(e.message); // hello console.error(e.name); // syntaxerror console.error(e.filename); // somefile.js console.error(e.linenumber); // 10 console.error(e.columnnumber); // 0 console.error(e.stack); // @debugger eval code:3:9 } specifications specification ecmascript (ecma-262)the definition of 'syntaxerror' in that specification.

TypeError - JavaScript
although ecma-262 specifies that typeerror should provide its own message property, in spidermonkey, it inherits error.prototype.message.
...eerror) // true console.log(e.message) // "hello" console.log(e.name) // "typeerror" console.log(e.filename) // "somefile.js" console.log(e.linenumber) // 10 console.log(e.columnnumber) // 0 console.log(e.stack) // "@scratchpad/2:2:9\n" } specifications specification ecmascript (ecma-262)the definition of 'typeerror' in that specification.

TypedArray.prototype.fill() - JavaScript
// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.fill if (!uint8array.prototype.fill) { uint8array.prototype.fill = array.prototype.fill; } examples using fill new uint8array([1, 2, 3]).fill(4); // uint8array [4, 4, 4] new uint8array([1, 2, 3]).fill(4, 1); // uint8array [1, 4, 4] new uint8array([1, 2, 3]).fill(4, 1, 2); // uint8array [1, 4, 3] new uint8array([1, 2, 3]).fill(4, 1, 1); // uint8ar...
...ray [1, 2, 3] new uint8array([1, 2, 3]).fill(4, -3, -2); // uint8array [4, 2, 3] specifications specification ecmascript (ecma-262)the definition of 'typedarray.prototype.fill' in that specification.

TypedArray.prototype.join() - JavaScript
// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.join if (!uint8array.prototype.join) { object.defineproperty(uint8array.prototype, 'join', { value: array.prototype.join }); } if you need to support truly obsolete javascript engines that don't support object.defineproperty, it's best not to polyfill array.prototype methods at all, as you can't make them non-enumerable.
... examples using join var uint8 = new uint8array([1,2,3]); uint8.join(); // '1,2,3' uint8.join(' / '); // '1 / 2 / 3' uint8.join(''); // '123' specifications specification ecmascript (ecma-262)the definition of 'typedarray.prototype.join' in that specification.

TypedArray.prototype.some() - JavaScript
// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.some if (!uint8array.prototype.some) { object.defineproperty(uint8array.prototype, 'some', { value: array.prototype.some }); } if you need to support truly obsolete javascript engines that don't support object.defineproperty, it's best not to polyfill array.prototype methods at all, as you can't make them non-enumerable.
... new uint8array([2, 5, 8, 1, 4]).some(elem => elem > 10); // false new uint8array([12, 5, 8, 1, 4]).some(elem => elem > 10); // true specifications specification ecmascript (ecma-262)the definition of 'typedarray.prototype.some' in that specification.

URIError - JavaScript
although ecma-262 specifies that urierror should provide its own message property, in spidermonkey, it inherits error.prototype.message.
...ceof urierror) // true console.log(e.message) // "hello" console.log(e.name) // "urierror" console.log(e.filename) // "somefile.js" console.log(e.linenumber) // 10 console.log(e.columnnumber) // 0 console.log(e.stack) // "@scratchpad/2:2:9\n" } specifications specification ecmascript (ecma-262)the definition of 'urierror' in that specification.

WebAssembly.CompileError - JavaScript
although ecma-262 specifies that urierror should provide its own message property, in spidermonkey, it inherits error.prototype.message.
... ecmascript (ecma-262)the definition of 'nativeerror' in that specification.

WebAssembly.Global() constructor - JavaScript
desktopmobileserverchromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetnode.jsglobal() constructorchrome full support 69edge no support nofirefox full support 62ie no support noopera no support nosafari no support nowebview android full support 69chrome android full support 69firefox android full support ...
... 62opera android no support nosafari ios no support nosamsung internet android full support 10.0nodejs no support nolegend full support full support no support no support ...

WebAssembly.LinkError - JavaScript
although ecma-262 specifies that urierror should provide its own message property, in spidermonkey, it inherits error.prototype.message.
... ecmascript (ecma-262)the definition of 'nativeerror' in that specification.

WebAssembly.RuntimeError - JavaScript
although ecma-262 specifies that urierror should provide its own message property, in spidermonkey, it inherits error.prototype.message.
... ecmascript (ecma-262)the definition of 'nativeerror' in that specification.

WebAssembly - JavaScript
ll support 11samsung internet android full support 7.0nodejs full support 8.0.0globalchrome full support 69edge no support nofirefox full support 62ie no support noopera no support nosafari no support nowebview android full support 69chrome android full support 69firefox android full support ...
... 62opera android no support nosafari ios no support nosamsung internet android full support 10.0nodejs no support noinstancechrome full support 57edge full support 16firefox full support 52notes full support 52notes notes disabled in the firefox 52 extended support release (esr).ie no support noopera full support 44safari ...

escape() - JavaScript
warning: although escape() is not strictly deprecated (as in "removed from the web standards"), it is defined in annex b of the ecma-262 standard, whose introduction states: … all of the language features and behaviours specified in this annex have one or more undesirable characteristics and in the absence of legacy usage would be removed from this specification.
... examples using escape escape('abc123'); // "abc123" escape('äöü'); // "%e4%f6%fc" escape('ć'); // "%u0107" // special characters escape('@*_+-./'); // "@*_+-./" specifications specification ecmascript (ecma-262)the definition of 'escape' in that specification.

unescape() - JavaScript
warning: although unescape() is not strictly deprecated (as in "removed from the web standards"), it is defined in annex b of the ecma-262 standard, whose introduction states: … all of the language features and behaviours specified in this annex have one or more undesirable characteristics and in the absence of legacy usage would be removed from this specification.
... examples using unescape unescape('abc123'); // "abc123" unescape('%e4%f6%fc'); // "äöü" unescape('%u0107'); // "ć" specifications specification ecmascript (ecma-262)the definition of 'unescape' in that specification.

Spread syntax (...) - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'array initializer' in that specification.
... ecmascript (ecma-262)the definition of 'object initializer' in that specification.

typeof - JavaScript
type result undefined "undefined" null "object" (see below) boolean "boolean" number "number" bigint (new in ecmascript 2020) "bigint" string "string" symbol (new in ecmascript 2015) "symbol" function object (implements [[call]] in ecma-262 terms) "function" any other object "object" note: ecmascript 2019 and older permitted implementations to have typeof return any implementation-defined string value for non-callable non-standard exotic objects.
... specifications specification ecmascript (ecma-262)the definition of 'the typeof operator' in that specification.

export - JavaScript
'white', thickness:'2px' }, draw: function() { console.log('from graph draw function'); } } export { cube, foo, graph }; then in the top-level module included in your html page, we could have: import { cube, foo, graph } from './my-module.js'; graph.options = { color:'blue', thickness:'3px' }; graph.draw(); console.log(cube(3)); // 27 console.log(foo); // 4.555806215962888 it is important to note the following: you need to include this script in your html with a <script> element of type="module", so that it gets recognised as a module and dealt with appropriately.
...to re-export them export { myfunction, myvariable } from 'childmodule1.js'; export { myclass } from 'childmodule2.js'; // in top-level module // we can consume the exports from a single module since parentmodule // "collected"/"bundled" them in a single source import { myfunction, myvariable, myclass } from 'parentmodule.js' specifications specification ecmascript (ecma-262)the definition of 'exports' in that specification.

import - JavaScript
eryselector("main"); for (const link of document.queryselectorall("nav > a")) { link.addeventlistener("click", e => { e.preventdefault(); import('/modules/my-module.js') .then(module => { module.loadpageinto(main); }) .catch(err => { main.textcontent = err.message; }); }); } specifications specification ecmascript (ecma-262)the definition of 'imports' in that specification.
... ecmascript (ecma-262)the definition of 'import calls' in that specification.

Template literals (Template strings) - JavaScript
nt in the “cooked” array: function latex(str) { return { "cooked": str[0], "raw": str.raw[0] } } latex`\unicode` // { cooked: undefined, raw: "\\unicode" } note that the escape sequence restriction is only dropped from tagged templates—not from untagged template literals: let bad = `bad escape sequence: \unicode`; specifications specification ecmascript (ecma-262)the definition of 'template literals' in that specification.
... ecmascript (ecma-262)the definition of 'tagged templates literals' in that specification.

Web video codec guide - Web media technologies
c compatible no supporting/maintaining organization mpeg specification https://www.iso.org/standard/22411.html licensing proprietary; however, all patents have expired, so mpeg-1 may be used freely mpeg-2 part 2 video mpeg-2 part 2 is the video format defined by the mpeg-2 specification, and is also occasionally referred to by its itu designation, h.262.
...net explorer opera safari mpeg-2 support no no no no no yes container support mpeg, mpeg-ts (mpeg transport stream), mp4, quicktime rtp / webrtc compatible no supporting/maintaining organization mpeg / itu specification https://www.itu.int/rec/t-rec-h.262 https://www.iso.org/standard/61152.html licensing proprietary; all patents have expired worldwide with the exception of in malaysia and the philippines as of april 1, 2019, so mpeg-2 can be used freely outside those two countries.

preserveAspectRatio - SVG: Scalable Vector Graphics
example <svg viewbox="-1 -1 162 92" xmlns="http://www.w3.org/2000/svg"> <defs> <path id="smiley" d="m50,10 a40,40,1,1,1,50,90 a40,40,1,1,1,50,10 m30,40 q36,35,42,40 m58,40 q64,35,70,40 m30,60 q50,75,70,60 q50,75,30,60" /> </defs> <!-- (width>height) meet --> <svg preserveaspectratio="xmidymid meet" x="0" y="0" viewbox="0 0 100 100" width="20" height="10"><use href="#smiley" /></svg> <svg preserveaspectratio...
...height="25"><use href="#smiley" /></svg> <svg preserveaspectratio="xmaxymid slice" x="150" y="0" viewbox="0 0 100 100" width="10" height="25"><use href="#smiley" /></svg> <!-- none --> <svg preserveaspectratio="none" x="0" y="30" viewbox="0 0 100 100" width="160" height="60"><use href="#smiley" /></svg> </svg> topexample html,body,svg { height:100% } <svg viewbox="-1 -1 162 92" xmlns="http://www.w3.org/2000/svg"> <defs> <path id="smiley" d="m50,10 a40,40,1,1,1,50,90 a40,40,1,1,1,50,10 m30,40 q36,35,42,40 m58,40 q64,35,70,40 m30,60 q50,75,70,60 q50,75,30,60" /> </defs> <!-- (width>height) meet --> <rect x="0" y="0" width="20" height="10"> <title>xmidymid meet</title> </rect> <svg viewbox="0 0 100 100" width="20" height="10" preserveaspect...

SVG 1.1 Support in Firefox - SVG: Scalable Vector Graphics
recently implemented bindings: selectsubstring altglyph implemented as tspans, no font features as of gecko 2.0 (bug 456286, bug 571808).
... animation module animate implemented set implemented animatemotion implemented animatetransform implemented animatecolor not implemented (bug 436296).

Paths - SVG: Scalable Vector Graphics
this is best explained with an example: <svg width="320" height="320" xmlns="http://www.w3.org/2000/svg"> <path d="m 10 315 l 110 215 a 30 50 0 0 1 162.55 162.45 l 172.55 152.45 a 30 50 -45 0 1 215.1 109.9 l 315 10" stroke="black" fill="green" stroke-width="2" fill-opacity="0.5"/> </svg> the example shows a <path> element that goes diagonally across the page.
...this second computation is for the non-rotated ellipse with start→end (110, 215)→(162.55, 162.45).

WebAssembly
ll support 11samsung internet android full support 7.0nodejs full support 8.0.0globalchrome full support 69edge no support nofirefox full support 62ie no support noopera no support nosafari full support 13.1webview android full support 69chrome android full support 69firefox android full support ...
... 62opera android no support nosafari ios full support 13.4samsung internet android full support 10.0nodejs no support noinstancechrome full support 57edge full support 16firefox full support 52notes full support 52notes notes disabled in the firefox 52 extended support release (esr).ie no support noopera full support 44safari ...

Window: deviceproximity event - Archive of obsolete content
note: this event has been disabled by default in firefox 62, behind the device.sensors.proximity.enabled preference (bug 1462308).

Window: userproximity event - Archive of obsolete content
bubbles no cancelable no interface userproximityevent target defaultview (window) default action none event handler property window.onuserroximity specification proximity sensor note: this event has been disabled by default in firefox 62, behind the device.sensors.proximity.enabled preference (bug 1462308).

port - Archive of obsolete content
due to bug 816272 the page-mod's removelistener() function does not prevent the listener from receiving messages that are already queued.

Communicating using "port" - Archive of obsolete content
due to bug 816272 the page-mod's removelistener() function does not prevent the listener from receiving messages that are already queued.

Listening for Load and Unload - Archive of obsolete content
for more, see bug 627432, in particular comment 12 on that bug.

Signing an XPI - Archive of obsolete content
igned c:\projects\codesigning\signed\> zip fsb.xpi meta-inf/zigbert.rsa adding: meta-inf/zigbert.rsa (deflated 35%) c:\projects\codesigning\signed> zip -r -d fsb.xpi * -x meta-inf/zigbert.rsa adding: meta-inf/manifest.mf (deflated 37%) adding: meta-inf/zigbert.sf (deflated 40%) adding: chrome/fsb.jar (deflated 74%) adding: chrome.manifest (deflated 69%) adding: install.rdf (deflated 62%) test your certificate to test your certificate, install it into your browser, and attempt to load the signed extension by following these steps: 1.

Inner-browsing extending the browser navigation paradigm - Archive of obsolete content
the following xml datasources are used in this sample: http://web.archive.org/web/20090624020048/http://devedge-temp.mozilla.org/central/dom/catalog-new_en.xml http://web.archive.org/web/20090218052509/http://devedge-temp.mozilla.org/central/xml/catalog-new_en.xml http://web.archive.org/web/20100913225355/http://devedge-temp.mozilla.org/central/css/catalog-new_en.xml http://web.archive.org/web/20090218052536/http://devedge-temp.mozilla.org/viewsource/catalog-new_en.xml data binder com...

List of Mozilla-Based Applications - Archive of obsolete content
rg/computers/data_formats/markup_languages/xml/applications/xul/applications/ http://blog.mozbox.org/post/2007/06/14/xul-activity-in-france http://www.mozilla.org/projects/security/pki/nss/overview.html http://en.wikipedia.org/wiki/spidermonkey_(javascript_engine) http://www.mozilla.org/rhino/users.html http://groups.google.com/group/mozilla.dev.tech.js-engine.rhino/browse_thread/thread/4eb9162c9c3054b0/1d4115b40373ca3b?lnk=raot http://www.ohloh.net/tags/xulrunner ...

MMgc - Archive of obsolete content
they are logged like this: [mem] sweep(21) reclaimed 910 whole pages (3640 kb) in 22.66 millis (2.4975 s) [mem] mark(1) 0 objects (180866 kb 205162 mb/s) in 0.88 millis (2.5195 s) [mem] drc reaped 114040 objects (3563 kb) freeing 903 pages (7800 kb) in 17.41 millis (2.0015 s) how mmgc works mark/sweep the mmgc garbage collector uses a mark/sweep algorithm.

Autodial for Windows NT - Archive of obsolete content
starting in mozilla 1.1, autodial is triggered whenever an address can't be reached (mozilla now mimics the remote access autodial service.) see bug 160846, bug 167624, and bug 160846.

Document Loading - From Load Start to Finding a Handler - Archive of obsolete content
bird's eye view <map id="loaddiagrammap" name="loaddiagrammap"><area alt="(13) docontent()" coords="534,239,715,300" href="#nsiexternalhelperappservice::docontent"> <area alt="(10) getcategoryentry()" coords="575,418,821,418,821,455,629,455,629,484,575,484" href="#categorymanager" shape="poly"> <area alt="(12)" coords="539,133,583,163" href="#stream-converter"> <area alt="(11)" coords="485,133,537,163" href="#contenthandler"> <area alt="(9)" coords="445,132,484,165" href="#nsdocumentopeninfo::dispatchcontent"> <area alt="(8)" coords="405,133,439,162" href="#onstartrequest-innards"> <area alt="(7) onstartrequest()" coords="639,1...

Migrate apps from Internet Explorer to Mozilla - Archive of obsolete content
model (dom): dom level 1, dom level 2 and parts of dom level 3 mathematical markup language: mathml version 2.0 extensible markup language (xml): xml 1.0, namespaces in xml, associating style sheets with xml documents 1.0, fragment identifier for xml xsl transformations: xslt 1.0 xml path language: xpath 1.0 resource description framework: rdf simple object access protocol: soap 1.1 ecma-262, revision 3 (javascript 1.5): ecma-262 general cross-browser coding tips even though web standards do exist, different browsers behave differently (in fact, the same browser may behave differently depending on the platform).

Mozilla Application Framework in Detail - Archive of obsolete content
files, compositing multiple sources into a single rdf graph, querying and manipulating graphs, and populating xul widgets (trees, menus, etc.) with graph data; an xslt/xpath processor; scalable vector graphics (svg) rendering with support for a usable subset of the standard including all basic shapes, beziers, stroking and filling with opacity, and much of the dom; mathml rendering; an ecma-262 edition 3-compliant javascript engine; java integration with a bridge to xpcom, a java dom api, the open jvm integration (oji) facility, a java webclient api, and java plug-ins; nspr, a runtime engine that provides platform-independence (across over a dozen platforms) for non-gui operating system facilities with support for threads, thread synchronization, normal file and network i/o, interval ...

LIR - Archive of obsolete content
integer signed int greater-than 56 lei integer signed int less-than-or-equal 57 gei integer signed int greater-than-or-equal 58 ltui integer unsigned int less-than 59 gtui integer unsigned int greater-than 60 leui integer unsigned int less-than-or-equal 61 geui integer unsigned int greater-than-or-equal 62 not in use 63 eqq integer 64 bit quad equality 64 ltq integer 64 bit signed quad less-than 65 gtq integer 64 bit signed quad greater-than 66 leq integer 64 bit signed quad less-than-or-equal 67 geq integer 64 bit signed quad greater-than-or-equal 68 ltuq integer 64 bit unsigned quad less-than 69 gtuq int...

Proxy UI - Archive of obsolete content
mouseover when online, the tooltip will include the current proxy mode: code http://mxr.mozilla.org/seamonkey/sou...ityoverlay.xul bugs bug 243624 reference network.proxy.type ...

Remote debugging - Archive of obsolete content
examples: 496391, 476241 ...

Running Tamarin acceptance tests - Archive of obsolete content
rm/android/android_runner.sh /data/local/tamarin/android_runner.sh $ adb shell 'chmod 777 /data/loca/android_runner.sh' test it out with a simple .abc or no args for usage (should return exitcode=0) $ tamarin-redux/platform/android/android_shell.py hello.abc hello exitcode=0 test it out by retrieving the version information of the shell on the android device $ $avm -dversion shell 1.4 debug build 6299:455bca954565 features avmsystem_32bit;avmsystem_unaligned_int_access;avmsystem_little_endian;avmsystem_arm;avmsystem_unix; avmfeature_jit;avmfeature_abc_interp;avmfeature_selftest;avmfeature_eval;avmfeature_protect_jitmem; avmfeature_shared_gcheap;avmfeature_cache_gqcn;avmfeature_safepoints;avmfeature_swf12;avmfeature_swf13;avmtweak_exact_tracing; running acceptance tests --androidthreads sets ...

Example Sticky Notes - Archive of obsolete content
fax - respond today.</p></div> <div class="sticker"><p>don't forget the eggs!</p></div> <div class="sticker"><p>the new project - who's on charge?</p></div> <div class="sticker"><p>learn more about xbl.</p></div> <p style="clear: left"><a href="http://validator.w3.org/check?uri=referer"><img src="https://udn.realityripple.com/samples/e2/dd625ef1cd.png" width="88" height="31" alt="valid html 4.01" style="border: 1px none"></a></p> </body> </html> notes.xml <?xml version="1.0"?> <bindings xmlns="http://www.mozilla.org/xbl" xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" xmlns:svg="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <!-- in above only xbl namespace declarati...

XBL - Archive of obsolete content
removal of the xbl implementation is being tracked in bug 1566221.

Return Codes - Archive of obsolete content
has been denied key_does_not_exist -242 registry key does not exist value_does_not_exist -243 registry value does not exist invalid_signature -260 the signature used in the xpi is not valid invalid_hash -261 the hash used in the xpi is not valid invalid_hash_type -262 the has used in the xpi is not of a valid type out_of_memory -299 insufficient memory for operation gestalt_unknown_error -5550 gestalt_invalid_argument -5551 ...

Installer Script - Archive of obsolete content
err = performinstall(); 62.

Mozilla E4X - Archive of obsolete content
presentation view online download summary "ecmascript for xml" (ecma-357), a new standard for writing and processing xml directly in javascript (ecma-262, iso-16262).

XTech 2005 Presentations - Archive of obsolete content
web 1.6: a rope of sand - opening keynote, mike shaver mozilla e4x - brendan eich "ecmascript for xml" (ecma-357), a new standard for writing and processing xml directly in javascript (ecma-262, iso-16262).

The Joy of XUL - Archive of obsolete content
applications written in xul are based on additional w3c standard technologies featuring html 4.0; cascading style sheets (css) 1 and 2; document object model (dom) levels 1 and 2; javascript 1.5, including ecma-262 edition 3 (ecmascript); xml 1.0.

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.

Using SOAP in XULRunner 1.9 - Archive of obsolete content
ct(method); body.ns = ns; for (var k in params) { body.appendchild(new soapobject(k).val(params[k])); } var req = new soaprequest(url, body); req.action = ns + '#' + method; soapclient.sendrequest(req, callback); diff between jqsoapclient.js and sasoapclient.js 42c42 < var jsout = $.xmltojson(xdata.responsexml); --- > var jsout = xmlobjectifier.xmltojson(xdata.responsexml); 46,60c46,62 < $.ajax({ < type: "post", < url: soapclient.proxy, < datatype: "xml", < processdata: false, < data: content, < complete: getresponse, < contenttype: soapclient.contenttype + "; charset=\"" + soapclient.charset + "\"", < beforesend: function(req) { < req.setrequestheader("method", "post"); < req.setrequestheader("content-length", soapclient.co...

The First Install Problem - Archive of obsolete content
at present plugins registered using the hkey_current_user\software\mozillaplugins\ tree are ignored by firefox (bug 293062) but this is fixed in trunk builds (bug 293062).

Introduction to Public-Key Cryptography - Archive of obsolete content
l client identifier: authority key identifier critical: no key identifier: f2:f2:06:59:90:18:47:51:f5:89:33:5a:31:7a:e6:5c:fb:36: 26:c9 signature: algorithm: pkcs #1 md5 with rsa encryption signature: 6d:23:af:f3:d3:b6:7a:df:90:df:cd:7e:18:6c:01:69:8e:54:65:fc:06: 30:43:34:d1:63:1f:06:7d:c3:40:a8:2a:82:c1:a4:83:2a:fb:2e:8f:fb: f0:6d:ff:75:a3:78:f7:52:47:46:62:97:1d:d9:c6:11:0a:02:a2:e0:cc: 2a:75:6c:8b:b6:9b:87:00:7d:7c:84:76:79:ba:f8:b4:d2:62:58:c3:c5: b6:c1:43:ac:63:44:42:fd:af:c8:0f:2f:38:85:6d:d6:59:e8:41:42:a5: 4a:e5:26:38:ff:32:78:a1:38:f1:ed:dc:0d:31:d1:b0:6d:67:e9:46:a8: d:c4 here is the same certificate displayed in the 64-byte-encoded form interpreted by software: -----begin certificate----- miickzccazsgawibagibazanbgkqh...

Table Reflow Internals - Archive of obsolete content
300 me=465 cell 0301a8cc d=1395,360 me=525 row 03017c08 d=uc,360 rowg 03017a7c d=uc,360 rowg 03017a7c r=2 a=4470,uc c=4470,uc cnt=442 row 03017c08 r=2 a=4470,uc c=4470,uc cnt=443 cell 03017da8 r=2 a=1755,uc c=1695,uc cnt=444 block 03017e08 r=2 a=1695,uc c=1695,uc cnt=445 block 03017e08 d=1695,300 cell 03017da8 d=1755,360 cell 0301a8cc r=2 a=2625,uc c=2565,uc cnt=446 block 0301a92c r=2 a=2565,uc c=2565,uc cnt=447 block 0301a92c d=2565,300 cell 0301a8cc d=2625,360 row 03017c08 d=4470,360 rowg 03017a7c d=4470,360 tbl 030178c4 d=4500,450 tblo 030176cc d=4500,450 table reflow optimizations if the table is already balanced, pass 1 constrains the width (like a normal pass 2) based on the current column width...

New in JavaScript 1.5 - Archive of obsolete content
the corresponding ecma standard is ecma-262 edition 3 (from december 1999).

New in JavaScript 1.6 - Archive of obsolete content
the corresponding ecma standard is ecma-262 edition 3 and ecmascript for xml (e4x) with some additional features.

New in JavaScript 1.7 - Archive of obsolete content
new features in javascript 1.7 the following features added with javascript 1.7 were not part of an ecma-262 standard at the time.

Troubleshooting XForms Forms - Archive of obsolete content
you either have to use css tables or repeat attributes, which at the moment are not working properly in the firefox xforms extension :( should be fixed by bug 306247 and bug 280368 respectively.

Implementation Status - Archive of obsolete content
some cases a loop error can occur on valid bindings 302168; 3.3.1 model supported 3.3.2 instance partial instance element with two child element does not trigger exception 337302; 3.3.3 submission partial no support for @indent and complex schema validation 278761; 278762; 3.3.4 bind partial using the index() function in binds does not work.

RFE to the Custom Controls - Archive of obsolete content
the related bug is bug 348562.

Window: devicelight event - Archive of obsolete content
note: this event has been disabled by default in firefox 62, behind the device.sensors.ambientlight.enabled preference (bug 1462308).

Index - Game development
62 collision detection beginner, canvas, games, javascript, tutorial, collision, detection we have the bricks appearing on the screen already, but the game still isn't that interesting as the ball goes through them.

Audio for Web games - Game development
mobile support for web audio features mobile browser version concurrent play autoplay volume adjusting preload chrome (android) 69+ y y y y firefox (android) 62+ y y y y edge mobile y y y y opera mobile 46+ y y y y safari (ios) 7+ y/n* n n y android browser 67+ y y y y there's a full compatibility chart for mobile and desktop htmlmediaelement support here.

Gecko FAQ - Gecko Redirect 1
xml 1.0: full support, except for processing to manipulate default attributes rdf: full support, except for abouteach, abouteachprefix, and parsetype javascript 1.5, including ecma-262 edition 3 (ecmascript) compliance, except for date.todatestring and date.totimestring, which are not implemented transfer protocols: http 1.1 (including gzip compression), ftp ssl unicode oji (open java interface) image formats png gif jpeg, pjpeg does "full support" mean that gecko has zero bugs today or will have zero bugs at some point in the future?

ECMA - MDN Web Docs Glossary: Definitions of Web-related terms
on the web it is famous for being the organization which maintain the ecma-262 specification (aka.

Falsy - MDN Web Docs Glossary: Definitions of Web-related terms
mples of falsy values in javascript (which are coerced to false in boolean contexts, and thus bypass the if block): if (false) if (null) if (undefined) if (0) if (-0) if (0n) if (nan) if ("") the logical and operator, && if the first object is falsy, it returns that object false && "dog" // ↪ false 0 && "dog" // ↪ 0 specifications specification ecmascript (ecma-262)the definition of 'toboolean abstract operation' in that specification.

ITU - MDN Web Docs Glossary: Definitions of Web-related terms
for example, the itu and the moving picture experts group (mpeg) worked together to develop and publish, as well as to maintain, the various mpeg specifications, such as mpeg-2 (itu h.262), avc (itu h.264), and hevc (itu h.265).

JavaScript - MDN Web Docs Glossary: Definitions of Web-related terms
since then, the standardized javascript is called ecmascript and specified under ecma-262, whose latest (tenth, es2019) edition is available as of june 2019.

Request header - MDN Web Docs Glossary: Definitions of Web-related terms
el mac os x 10.9; rv:50.0) gecko/20100101 firefox/50.0 accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 accept-language: en-us,en;q=0.5 accept-encoding: gzip, deflate, br referer: https://developer.mozilla.org/testpage.html connection: keep-alive upgrade-insecure-requests: 1 if-modified-since: mon, 18 jul 2016 02:36:04 gmt if-none-match: "c561c68d0ba92bbeb8b0fff2a9199f722e3a621a" cache-control: max-age=0 strictly speaking, the content-length header in this example is not a request header like the others, but an entity header: post /myform.html http/1.1 host: developer.mozilla.org user-agent: mozilla/5.0 (macintosh; intel mac os x 10.9; rv:50.0) gecko/20100101 firefox/50.0 content-length: 128 learn more technical knowledge list of all http headers ...

Response header - MDN Web Docs Glossary: Definitions of Web-related terms
note that strictly speaking, the content-encoding and content-type headers are entity header: 200 ok access-control-allow-origin: * connection: keep-alive content-encoding: gzip content-type: text/html; charset=utf-8 date: mon, 18 jul 2016 16:06:00 gmt etag: "c561c68d0ba92bbeb8b0f612a9199f722e3a621a" keep-alive: timeout=5, max=997 last-modified: mon, 18 jul 2016 02:36:04 gmt server: apache set-cookie: mykey=myvalue; expires=mon, 17-jul-2017 16:06:00 gmt; max-age=31449600; path=/; secure transfer-encoding: chunked vary: cookie, accept-encoding x-backend-server: developer2.webapp.scl3.mozilla.com x-cache-info: not cacheable; meta data too large x-kuma-revision: 1085259 x-frame-options: deny ...

Truthy - MDN Web Docs Glossary: Definitions of Web-related terms
examples of truthy values in javascript (which will be coerced to true in boolean contexts, and thus execute the if block): if (true) if ({}) if ([]) if (42) if ("0") if ("false") if (new date()) if (-42) if (12n) if (3.14) if (-3.14) if (infinity) if (-infinity) specifications specification ecmascript (ecma-262)the definition of 'toboolean abstract operation' in that specification.

Responsive design - Learn web development
.col { width: 6.25%; /* 60 / 960 = 0.0625 */ } this approach will be found in many places across the web today, and it is documented here in the layout section of our legacy layout methods article.

How do you make sure your website works properly? - Learn web development
rom 63.245.215.20: icmp_seq=0 ttl=44 time=148.741 ms 64 bytes from 63.245.215.20: icmp_seq=1 ttl=44 time=148.541 ms 64 bytes from 63.245.215.20: icmp_seq=2 ttl=44 time=148.734 ms 64 bytes from 63.245.215.20: icmp_seq=3 ttl=44 time=147.857 ms ^c --- mozilla.org ping statistics --- 4 packets transmitted, 4 packets received, 0.0% packet loss round-trip min/avg/max/stddev = 147.857/148.468/148.741/0.362 ms just keep in mind a handy keyboard shortcut: ctrl+c.

Example 2 - Learn web development
--------------- */ .select { position: relative; display : inline-block; } .select.active, .select:focus { box-shadow: 0 0 3px 1px #227755; outline: none; } .select .optlist { position: absolute; top : 100%; left : 0; } .select .optlist.hidden { max-height: 0; visibility: hidden; } /* ------------ */ /* fancy styles */ /* ------------ */ .select { font-size : 0.625em; /* 10px */ font-family : verdana, arial, sans-serif; -moz-box-sizing : border-box; box-sizing : border-box; padding : 0.1em 2.5em 0.2em 0.5em; /* 1px 25px 2px 5px */ width : 10em; /* 100px */ border : 0.2em solid #000; /* 2px */ border-radius : 0.4em; /* 4px */ box-shadow : 0 0.1em 0.2em rgba(0,0,0,.45); /* 0 1px 2px */ background : #f0f0f0; background : -web...

Example 3 - Learn web development
--------------- */ .select { position: relative; display : inline-block; } .select.active, .select:focus { box-shadow: 0 0 3px 1px #227755; outline: none; } .select .optlist { position: absolute; top : 100%; left : 0; } .select .optlist.hidden { max-height: 0; visibility: hidden; } /* ------------ */ /* fancy styles */ /* ------------ */ .select { font-size : 0.625em; /* 10px */ font-family : verdana, arial, sans-serif; -moz-box-sizing : border-box; box-sizing : border-box; padding : 0.1em 2.5em 0.2em 0.5em; /* 1px 25px 2px 5px */ width : 10em; /* 100px */ border : 0.2em solid #000; /* 2px */ border-radius : 0.4em; /* 4px */ box-shadow : 0 0.1em 0.2em rgba(0,0,0,.45); /* 0 1px 2px */ background : #f0f0f0; background : -web...

Example 4 - Learn web development
--------------- */ .select { position: relative; display : inline-block; } .select.active, .select:focus { box-shadow: 0 0 3px 1px #227755; outline: none; } .select .optlist { position: absolute; top : 100%; left : 0; } .select .optlist.hidden { max-height: 0; visibility: hidden; } /* ------------ */ /* fancy styles */ /* ------------ */ .select { font-size : 0.625em; /* 10px */ font-family : verdana, arial, sans-serif; -moz-box-sizing : border-box; box-sizing : border-box; padding : 0.1em 2.5em 0.2em 0.5em; /* 1px 25px 2px 5px */ width : 10em; /* 100px */ border : 0.2em solid #000; /* 2px */ border-radius : 0.4em; /* 4px */ box-shadow : 0 0.1em 0.2em rgba(0,0,0,.45); /* 0 1px 2px */ background : #f0f0f0; background : -web...

Example 5 - Learn web development
--------------- */ .select { position: relative; display : inline-block; } .select.active, .select:focus { box-shadow: 0 0 3px 1px #227755; outline: none; } .select .optlist { position: absolute; top : 100%; left : 0; } .select .optlist.hidden { max-height: 0; visibility: hidden; } /* ------------ */ /* fancy styles */ /* ------------ */ .select { font-size : 0.625em; /* 10px */ font-family : verdana, arial, sans-serif; -moz-box-sizing : border-box; box-sizing : border-box; padding : 0.1em 2.5em 0.2em 0.5em; /* 1px 25px 2px 5px */ width : 10em; /* 100px */ border : 0.2em solid #000; /* 2px */ border-radius : 0.4em; /* 4px */ box-shadow : 0 0.1em 0.2em rgba(0,0,0,.45); /* 0 1px 2px */ background : #f0f0f0; background : -web...

How to build custom form controls - Learn web development
if you are lost with px to em conversion, try http://riddle.pl/emcalc/ */ font-size : 0.625em; /* this (10px) is the new font size context for em value in this context */ font-family : verdana, arial, sans-serif; box-sizing : border-box; /* we need extra room for the down arrow we will add */ padding : .1em 2.5em .2em .5em; width : 10em; /* 100px */ border : .2em solid #000; border-radius : .4em; box-shadow : 0 .1em .2em rgba(0,0,0,.45); /* the first d...

What’s in the head? Metadata in HTML - Learn web development
for example, you'll find this in the source code of the mdn web docs homepage: <!-- third-generation ipad with high-resolution retina display: --> <link rel="apple-touch-icon-precomposed" sizes="144x144" href="https://developer.cdn.mozilla.net/static/img/favicon144.a6e4162070f4.png"> <!-- iphone with high-resolution retina display: --> <link rel="apple-touch-icon-precomposed" sizes="114x114" href="https://developer.cdn.mozilla.net/static/img/favicon114.0e9fabd44f85.png"> <!-- first- and second-generation ipad: --> <link rel="apple-touch-icon-precomposed" sizes="72x72" href="https://developer.cdn.mozilla.net/static/img/favicon72.8ff9d87c82a0.png"> <!-- non-retina ip...

Working with Svelte stores - Learn web development
d update the alert.svelte markup section like so: {#if visible} <div on:click={() => visible = false}> <svg xmlns="http://www.w3.org/2000/svg" viewbox="0 0 20 20"><path d="m12.432 0c1.34 0 2.01.912 2.01 1.957 0 1.305-1.164 2.512-2.679 2.512-1.269 0-2.009-.75-1.974-1.99c9.789 1.436 10.67 0 12.432 0zm8.309 20c-1.058 0-1.833-.652-1.093-3.524l1.214-5.092c.211-.814.246-1.141 0-1.141-.317 0-1.689.562-2.502 1.117l-.528-.88c2.572-2.186 5.531-3.467 6.801-3.467 1.057 0 1.233 1.273.705 3.23l-1.391 5.352c-.246.945-.141 1.271.106 1.271.317 0 1.357-.392 2.379-1.207l.6.814c12.098 19.02 9.365 20 8.309 20z"/></svg> <p>{ $alert }</p> </div> {/if} here we first create the prop ms with a default value of 3000 (milliseconds).

Dynamic behavior in Svelte: working with variables and props - Learn web development
repl to code along with us using the repl, start at https://svelte.dev/repl/c862d964d48d473ca63ab91709a0a5a0?version=3.23.2 working with todos our todos.svelte component is currently just displaying static markup; let's start making it a bit more dynamic.

Handling common JavaScript problems - Learn web development
browser sniffing causes all kind of interesting bugs, like bug 1308462.

Chrome registration
component {09543782-22b1-4a0b-ba07-9134365776ee} maincomponent.js process=main component {98309951-ac89-4642-afea-7b2b6216bcef} contentcomponent.js process=content xpcnativewrappers chrome packages can decide whether to use the xpcnativewrapper security mechanism to automatically protect their code against malicious content that they might access.

Debugging Frame Reflow
reate the following log: vp 00b97c30 r=0 a=9180,4470 c=9180,4470 cnt=856 scroll 00b97ee0 r=0 a=9180,4470 c=9180,4470 cnt=857 scroll 00b97ee0 r=0 a=9180,4470 c=9180,4470 cnt=858 canvas 00b97c6c r=0 a=9180,uc c=9180,4470 cnt=859 area 02d7afe4 r=0 a=9180,uc c=9180,uc cnt=860 text 02d7b150 r=0 a=9180,uc c=uc,uc cnt=861 text 02d7b150 d=0,0 block 02d7b210 r=0 a=9180,uc c=8940,uc cnt=862 block 02d7b210 d=8940,0 area 02d7afe4 d=9180,120 canvas 00b97c6c d=9180,4470 scroll 00b97ee0 d=9180,4470 scroll 00b97ee0 d=9180,4470 vp 00b97c30 d=9180,4470 vp 00b97c30 r=1 a=9180,4470 c=9180,4470 cnt=863 scroll 00b97ee0 r=1 a=9180,4470 c=9180,4470 cnt=864 scroll 00b97ee0 r=1 a=9180,4470 c=9180,4470 cnt=865 canvas 00b97c6c r=1 a=9180,uc c=9180,4470 cnt=866 area 02d7afe4 r=1 a=91...

SVG Guidelines
you can avoid this by doing basic algebra, for example: <g transform="translate(-62, -310)"><shape transform="translate(60, 308)"/></g> can be cut down to: <shape transform="translate(-2,-2)"/> because: -62+60 = -310+308 = -2 performance tips these rules are optional, but they help speeding up the svg.

Linux compatibility matrix
fedora 31 5.3 2.30 2.62 2.24 3.24.12 0.34 9.2.1 9.2.1 9.0 3.7 oct 2019 ?

CSS <display-xul> component
firefox supports the following -moz- prefixed xul display values: syntax -moz-box obsolete since gecko 64 xul box, mostly equivalent to flex -moz-inline-box obsolete since gecko 64 xul inline box, mostly equivalent to inline-flex -moz-grid obsolete since gecko 62 xul grid -moz-inline-grid obsolete since gecko 62 xul inline grid -moz-grid-group obsolete since gecko 62 xul grid group -moz-grid-line obsolete since gecko 62 xul grid line -moz-stack obsolete since gecko 62 xul stack -moz-inline-stack obsolete since gecko 62 xul inline stack -moz-deck obsolete since gecko 62 xul deck -moz-popup obsolete since gecko 62 xul popup all xul display values, with the exception of -moz-box and -moz-inline-box, have been removed in bug 1288572.

How to get a stacktrace with WinDbg
q: the first four frames of my stack trace look like this: 0012fe20 7c90e89a ntdll!kifastsystemcallret 0012fe24 7c81cd96 ntdll!zwterminateprocess+0xc 0012ff20 7c81cdee kernel32!_exitprocess+0x62 0012ff34 6000179e kernel32!exitprocess+0x14 this looks wrong to me?!

PBackground
pbackground is a mechanism available since gecko 30 (see bug 956218) that builds on top of ipdl to provide a solution to common problems that arise when handling multiple threads in the chrome process, for example communication between workers and multiple child processes and other parent-process worker threads.

Interfacing with the Add-on Repository
enabling the recommendation feature in current builds of firefox 4, the recommendation api doesn't work because the preference for the url to query to get recommended add-ons is not included by default; see bug 628785.

Deferred
function deferred() { // update 062115 for typeof if (typeof(promise) != 'undefined' && promise.defer) { //need import of promise.jsm for example: cu.import('resource:/gree/modules/promise.jsm'); return promise.defer(); } else if (typeof(promiseutils) != 'undefined' && promiseutils.defer) { //need import of promiseutils.jsm for example: cu.import('resource:/gree/modules/promiseutils.jsm'); return promiseutils.defer(); }...

XPCOMUtils.jsm
details can be found here: bug 628669 itersimpleenumerator() wraps an nsisimpleenumerator instance into a javascript generator that can be easily iterated over.

Encodings for localization files
si_charset cp1252 0 baltic_charset cp1257 186 chinesebig5_charset cp950 136 easteurope_charset cp1250 238 gb2312_charset cp936 134 greek_charset cp1253 161 hangul_charset cp949 129 russian_charset cp1251 204 shiftjis_charset cp932 128 turkish_charset cp1254 162 vietnamese_charset cp1258 163 middle east language editions of windows: arabic_charset cp1256 178 hebrew_charset cp1255 177 thai language editions of windows: thai_charset cp874 222 ...

Activity Monitor, Battery Status Menu and top
pid command %cpu idlew power 50300 firefox 12.9 278 26.6 76256 plugin-container 3.4 159 11.3 151 coreaudiod 0.9 68 4.3 76505 top 1.5 1 1.6 76354 activity monitor 1.0 0 1.0 the pid, command and %cpu columns are self-explanatory.

DMD
unsigned long*) const (/home/njn/moz/mi2/xpcom/base/nscyclecollector.cpp:3029) 0x7f6860fdb6b1 #05: cyclecollectormultireporter::collectreports(nsimemorymultireportercallback*, nsisupports*) (/home/njn/moz/mi2/xpcom/base/nscyclecollector.cpp:3075) 0x7f6860fde432 #06: nsmemoryinfodumper::dumpmemoryreportstofileimpl(nsastring_internal const&) (/home/njn/moz/mi2/xpcom/base/nsmemoryinfodumper.cpp:626) 0x7f6860fece79 #07: nsmemoryinfodumper::dumpmemoryreportstofile(nsastring_internal const&, bool, bool) (/home/njn/moz/mi2/xpcom/base/nsmemoryinfodumper.cpp:344) 0x7f6860febaf9 #08: mozilla::(anonymous namespace)::dumpmemoryreportsrunnable::run() (/home/njn/moz/mi2/xpcom/base/nsmemoryinfodumper.cpp:58) 0x7f6860fefe03 } you can tell which memory reporter made the report by the name of the m...

Investigating CSS Performance
this was developed while investigating bug 1110625 ...

TraceMalloc
leaks: 382739 bytes, 3465 allocations maximum heap size: 7751799 bytes 62095212 bytes were allocated in 391091 allocations.

tools/power/rapl
total w = _pkg_ (cores + _gpu_ + other) + _ram_ w #01 5.17 w = 1.78 ( 0.12 + 0.10 + 1.56) + 3.39 w #02 9.43 w = 5.44 ( 1.44 + 1.20 + 2.80) + 3.98 w #03 14.26 w = 10.21 ( 5.47 + 0.19 + 4.55) + 4.04 w #04 10.02 w = 6.15 ( 2.62 + 0.43 + 3.10) + 3.86 w #05 14.63 w = 10.43 ( 4.41 + 0.81 + 5.22) + 4.19 w #06 11.16 w = 6.90 ( 1.91 + 1.68 + 3.31) + 4.26 w #07 5.40 w = 1.97 ( 0.20 + 0.10 + 1.67) + 3.44 w #08 5.17 w = 1.76 ( 0.07 + 0.08 + 1.60) + 3.41 w #09 5.17 w = 1.76 ( 0.09 + 0.08 + 1.58) + 3.42 w #10 8.13 w = 4.40 ( 1.55 + 0.11 + 2.74) + 3.73 w things to note include the following.

turbostat
ore cpu avg_mhz %busy bzy_mhz tsc_mhz smi cpu%c1 cpu%c3 cpu%c6 cpu%c7 coretmp pkgtmp pkg%pc2 pkg%pc3 pkg%pc6 pkg%pc7 pkgwatt corwatt gfxwatt - - 799 21.63 3694 3398 0 12.02 3.16 1.71 61.48 49 49 0.00 0.00 0.00 0.00 22.68 15.13 1.13 0 0 821 22.44 3657 3398 0 9.92 2.43 2.25 62.96 39 49 0.00 0.00 0.00 0.00 22.68 15.13 1.13 0 4 708 19.14 3698 3398 0 13.22 1 1 743 20.26 3666 3398 0 21.40 4.01 1.42 52.90 49 1 5 1206 31.98 3770 3398 0 9.69 2 2 784 21.29 3681 3398 0 11.78 3.10 1.13 62.70 40 ...

ui.textSelectBackground
type:string with rgb hex value as color code default value:#ef0fff (blue) [1] exists by default: no application support: before gecko 1.7 status: active; last updated 2015-09-21 introduction: pushed to trunk on 2000-04-13 bugs: bug 34704 [1]: nsxplookandfeel.cpp, line 628, retrieved 2015-09-21 ...

NSS_3.11.10_release_notes.html
aring an ipv6 address bug 422918: add verisign class 3 public primary ca - g5 to nss bug 424152: add thawte primary root ca to nss bug 424169: add geotrust primary certification authority root to nss bug 425469: add multiple new roots: geotrust bug 426568: add comodo certification authority certificate to nss bug 431381: add network solutions certificate authority root to nss bug 431621: add diginotar root ca root to nss bug 431772: add network solutions and diginotar root certs to nss bug 442912: fix nssckbi version number on 3.11 branch bug 443045: fix pk11_generatekeypair for ecc keys on the 3.11 branch bug 444850: nss misbehaves badly in the presence of a disabled pkcs#11 slot bug 462948: lint warnings for source files that include keythi.h documentation for a ...

NSS 3.12.4 release notes
ting a large certificate (>64k) bug 486405: allocator mismatches in pk12util.c bug 486537: disable execstack in freebl x86_64 builds on linux bug 486698: facilitate the building of major components independently and in a chain manner by downstream distributions bug 486999: calling ssl_setsockpeerid a second time leaks the previous value bug 487007: make lib/jar conform to nss coding style bug 487162: ckfw/capi build failure on windows bug 487239: nssutil.rc doesn't compile on wince bug 487254: sftkmod.c uses posix file io functions on wince bug 487255: sdb.c uses posix file io functions on wince bug 487487: cert_nametoascii reports !invalid ava!

NSS 3.15 release notes
bugs fixed in nss 3.15 this bugzilla query returns all the bugs fixed in nss 3.15: https://bugzilla.mozilla.org/buglist.cgi?list_id=6278317&resolution=fixed&classification=components&query_format=advanced&product=nss&target_milestone=3.15 ...

NSS 3.16 release notes
bug 962760: libpkix should not include the common name of ca as dns names when evaluating name constraints.

NSS 3.17.3 release notes
the following ca certificates were removed cn = gte cybertrust global root sha1 fingerprint: 97:81:79:50:d8:1c:96:70:cc:34:d8:09:cf:79:44:31:36:7e:f4:74 cn = thawte server ca sha1 fingerprint: 23:e5:94:94:51:95:f2:41:48:03:b4:d5:64:d2:a3:a3:f5:d8:8b:8c cn = thawte premium server ca sha1 fingerprint: 62:7f:8d:78:27:65:63:99:d2:7d:7f:90:44:c9:fe:b3:f3:3e:fa:9a cn = america online root certification authority 1 sha-1 fingerprint: 39:21:c1:15:c1:5d:0e:ca:5c:cb:5b:c4:f0:7d:21:d8:05:0b:56:6a cn = america online root certification authority 2 sha-1 fingerprint: 85:b5:ff:67:9b:0c:79:96:1f:c8:6e:44:22:00:46:13:db:17:92:84 the following ca certif...

NSS 3.18.1 release notes
ou = equifax secure certificate authority sha1 fingerprint: d2:32:09:ad:23:d3:14:23:21:74:e4:0d:7f:9d:62:13:97:86:63:3a the following ca certificate was removed after discussion about it in the mozilla.dev.security.policy forum.

NSS 3.18 release notes
the following ca certificates had the websites and code signing trust bits turned off ou = equifax secure certificate authority sha1 fingerprint: d2:32:09:ad:23:d3:14:23:21:74:e4:0d:7f:9d:62:13:97:86:63:3a cn = equifax secure global ebusiness ca-1 sha1 fingerprint: 7e:78:4a:10:1c:82:65:cc:2d:e1:f1:6d:47:b4:40:ca:d9:0a:19:45 cn = tc trustcenter class 3 ca ii sha1 fingerprint: 80:25:ef:f4:6e:70:c8:d4:72:24:65:84:fe:40:3b:8a:8d:6a:db:f5 the following ca certificates were added cn = staat der nederlanden root ca - g3 ...

NSS 3.19.3 release notes
the following ca certificates were removed cn = buypass class 3 ca 1 sha1 fingerprint: 61:57:3a:11:df:0e:d8:7e:d5:92:65:22:ea:d0:56:d7:44:b3:23:71 cn = tÜrktrust elektronik sertifika hizmet sağlayıcısı sha1 fingerprint: 79:98:a3:08:e1:4d:65:85:e6:c2:1e:15:3a:71:9f:ba:5a:d3:4a:d9 cn = sg trust services racine sha1 fingerprint: 0c:62:8f:5c:55:70:b1:c9:57:fa:fd:38:3f:b0:3d:7b:7d:d7:b9:c6 cn = tc trustcenter universal ca i sha-1 fingerprint: 6b:2f:34:ad:89:58:be:62:fd:b0:6b:5c:ce:bb:9d:d9:4f:4e:39:f3 cn = tc trustcenter class 2 ca ii sha-1 fingerprint: ae:50:83:ed:7c:f4:5c:bc:8f:61:c6:21:fe:68:5d:79:42:21:15:6e the following ca certificate had the websites trust bit tu...

NSS 3.21.4 release notes
bugs fixed in nss 3.21.4 bug 1344380 / out-of-bounds write in base64 encoding in nss (cve-2017-5461) bug 1345089 / drbg flaw in nss (cve-2017-5462) acknowledgements the nss development team would like to thank ronald crane and vladimir klebanov for responsibly disclosing the issues by providing advance copies of their research.

NSS 3.25 release notes
cn = opentrust root ca g1 sha-256 fingerprint: 56:c7:71:28:d9:8c:18:d9:1b:4c:fd:ff:bc:25:ee:91:03:d4:75:8e:a2:ab:ad:82:6a:90:f3:45:7d:46:0e:b4 cn = opentrust root ca g2 sha-256 fingerprint: 27:99:58:29:fe:6a:75:15:c1:bf:e8:48:f9:c4:76:1d:b1:6c:22:59:29:25:7b:f4:0d:08:94:f2:9e:a8:ba:f2 cn = opentrust root ca g3 sha-256 fingerprint: b7:c3:62:31:70:6e:81:07:8c:36:7c:b8:96:19:8f:1e:32:08:dd:92:69:49:dd:8f:57:09:a4:10:f7:5b:62:92 bugs fixed in nss 3.25 this bugzilla query returns all the bugs fixed in nss 3.25: https://bugzilla.mozilla.org/buglist.cgi?resolution=fixed&classification=components&query_format=advanced&product=nss&target_milestone=3.25 compatibility nss 3.25 shared libraries are backward compatible with ...

NSS 3.28.4 release notes
bugs fixed in nss 3.28.4 bug 1344380 / out-of-bounds write in base64 encoding in nss (cve-2017-5461) bug 1345089 / drbg flaw in nss (cve-2017-5462) bug 1342358 - crash in tls13_destroykeyshares acknowledgements the nss development team would like to thank ronald crane and vladimir klebanov for responsibly disclosing the issues by providing advance copies of their research.

NSS 3.29.5 release notes
bugs fixed in nss 3.29.5 bug 1344380 / out-of-bounds write in base64 encoding in nss (cve-2017-5461) bug 1345089 / drbg flaw in nss (cve-2017-5462) acknowledgements the nss development team would like to thank ronald crane and vladimir klebanov for responsibly disclosing the issues by providing advance copies of their research.

NSS 3.34 release notes
�layıcısı - sürüm 3 sha-256 fingerprint: e4:c7:34:30:d7:a5:b5:09:25:df:43:37:0a:0d:21:6e:9a:79:b9:d6:db:83:73:a0:c6:9e:b1:cc:31:c7:c5:2a cn = acedicom root sha-256 fingerprint: 03:95:0f:b4:9a:53:1f:3e:19:91:94:23:98:df:a9:e0:ea:32:d7:ba:1c:dd:9b:c8:5d:b5:7e:d9:40:0b:43:4a cn = certinomis - autorité racine sha-256 fingerprint: fc:bf:e2:88:62:06:f7:2b:27:59:3c:8b:07:02:97:e1:2d:76:9e:d1:0e:d7:93:07:05:a8:09:8e:ff:c1:4d:17 cn = tÜrktrust elektronik sertifika hizmet sağlayıcısı sha-256 fingerprint: 97:8c:d9:66:f2:fa:a0:7b:a7:aa:95:00:d9:c0:2e:9d:77:f2:cd:ad:a6:ad:6b:a7:4a:f4:b9:1c:66:59:3c:50 cn = pscprocert sha-256 fingerprint: 3c:fc:3c:14:d1:f6:84:ff:17:e3:8c:43:ca:44:0c:00:b9:67:ec:93:...

NSS 3.35 release notes
the following ca certificates were removed: ou = security communication ev rootca1 sha-256 fingerprint: a2:2d:ba:68:1e:97:37:6e:2d:39:7d:72:8a:ae:3a:9b:62:96:b9:fd:ba:60:bc:2e:11:f6:47:f2:c6:75:fb:37 cn = ca disig root r1 sha-256 fingerprint: f9:6f:23:f4:c3:e7:9c:07:7a:46:98:8d:5a:f5:90:06:76:a0:f0:39:cb:64:5d:d1:75:49:b2:16:c8:24:40:ce cn = dst aces ca x6 sha-256 fingerprint: 76:7c:95:5a:76:41:2c:89:af:68:8e:90:a1:c7:0f:55:6c:fd:6b:60:25:db:ea:10:41:6d:7e:b6:83:1f:8c:40 subject cn = verisign ...

NSS 3.36.2 release notes
bugs fixed in nss 3.36.2 bug 1462303 - connecting to a server that was recently upgraded to tls 1.3 would result in a ssl_rx_malformed_server_hello error.

NSS 3.37.1 release notes
bugs fixed in nss 3.37.1 bug 1462303 - connecting to a server that was recently upgraded to tls 1.3 would result in a ssl_rx_malformed_server_hello error.

NSS 3.44.1 release notes
new in nss 3.44.1 new functionality 1546229 - add ipsec ike support to softoken many new fips test cases (note: this has increased the source archive by approximately 50 megabytes for this release.) bugs fixed in nss 3.44.1 1554336 - optimize away unneeded loop in mpi.c 1515342 - more thorough input checking (cve-2019-11729) 1540541 - don't unnecessarily strip leading 0's from key material during pkcs11 import...

NSS 3.49 release notes
additional hrr tests (cve-2019-17023) bug 1600144 - treat clienthello with message_seq of 1 as a second clienthello bug 1603027 - test that esni is regenerated after helloretryrequest bug 1593167 - intermittent mis-reporting potential security risk sec_error_unknown_issuer bug 1535787 - fix automation/release/nss-release-helper.py on macos bug 1594933 - disable building dbm by default bug 1562548 - improve gcm perfomance on aarch32 this bugzilla query returns all the bugs fixed in nss 3.49: https://bugzilla.mozilla.org/buglist.cgi?resolution=fixed&classification=components&query_format=advanced&product=nss&target_milestone=3.49 compatibility nss 3.49 shared libraries are backward compatible with all older nss 3.x shared libraries.

NSS 3.50 release notes
bug 1547639 - update zlib in nss to 1.2.11 bug 1609181 - detect arm (32-bit) cpu features on freebsd bug 1602386 - fix build on freebsd/powerpc* bug 1608151 - introduce nss_disable_altivec bug 1612623 - depend on nspr 4.25 bug 1609673 - fix a crash when nss is compiled without libnssdbm support, but the nssdbm shared object is available anyway.

NSS 3.56 release notes
bug 1625791 - fix deadlock issue in nssslot_istokenpresent.

NSS tools : ssltab
session id = { length = 32 contents = {..} 0: 14 11 07 a8 2a 31 91 29 11 94 40 37 57 10 a7 32 | ...¨*1.)..@7w.§2 10: 56 6f 52 62 fe 3d b3 65 b1 e4 13 0f 52 a3 c8 f6 | vorbþ=³e±...r£È.

NSS tools : ssltap
session id = { length = 32 contents = {..} 0: 14 11 07 a8 2a 31 91 29 11 94 40 37 57 10 a7 32 | ...¨*1.)..@7w.§2 10: 56 6f 52 62 fe 3d b3 65 b1 e4 13 0f 52 a3 c8 f6 | vorbþ=³e±...r£È.

NSS_3.12.3_release_notes.html
ibpkix reports unknown issuer for nearly all certificate errors bug 452391: certutil -k incorrectly reports ec private key as an orphan bug 453234: support for seed cipher suites to tls rfc4010 bug 453364: improve pk11_cipherop error reporting (was: pk11_createcontextbysymkey returns null bug 456406: slot list leaks in symkeyutil bug 461085: rfe: export function cert_comparecerts bug 462293: crash on fork after softoken is dlclose'd on some unix platforms in nss 3.12 bug 463342: move some headers to freebl/softoken bug 463452: sql db creation does not set files protections to 0600 bug 463678: need to add rpath to 64-bit libraries on hp-ux bug 464088: option to build nss without dbm (handy for wince) bug 464223: certutil didn't accept certificate request to sign.

NSS Tools ssltap
session id = { length = 32 contents = {..} 0: 14 11 07 a8 2a 31 91 29 11 94 40 37 57 10 a7 32 | ...¨*1.)..@7w.§2 10: 56 6f 52 62 fe 3d b3 65 b1 e4 13 0f 52 a3 c8 f6 | vorbþ=³e±...r£È.

NSS tools : ssltap
session id = { length = 32 contents = {..} 0: 14 11 07 a8 2a 31 91 29 11 94 40 37 57 10 a7 32 | ...¨*1.)..@7w.§2 10: 56 6f 52 62 fe 3d b3 65 b1 e4 13 0f 52 a3 c8 f6 | vorbþ=³e±...r£È.

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.

Invariants
(taken together, ecma 262-3 §11.13.1 and ecma 262-3 §10.1.4 specify that in an assignment such as x = f(), the name lookup for x occurs before f is called.

Introduction to the JavaScript shell
3 name "readline" 00036: 13 pushobj 00037: 13 call 0 00040: 13 setvar 1 00043: 13 pop ;------------------------- 14: ;------------------------- 15: print("you entered " + n1 + " and " + n2 + "\n"); 00044: 15 name "print" 00047: 15 pushobj 00048: 15 string "you entered " 00051: 15 getvar 0 00054: 15 add 00055: 15 string " and " 00058: 15 add 00059: 15 getvar 1 00062: 15 add 00063: 15 string "\\n" 00066: 15 add 00067: 15 call 1 00070: 15 pop 00071: 15 stop dumpheap(([filename[, start[, tofind[, maxdepth[, toignore]]]]]) dump gc information.

JIT Optimization Strategies
the jit coach feature was removed in bug 1614622.

JS::AutoVectorRooter
xr id search for js::autovectorrooter mxr id search for js::autovaluevector mxr id search for js::autoidvector mxr id search for js::autoobjectvector mxr id search for js::autofunctionvector mxr id search for js::autoscriptvector js::autovaluearray&lt;n&gt; - fixed-size array of js::value bug 677079 bug 868580 - expose js::autoobjectvector bug 848592 - added js::autofunctionvector bug 676281 - added js::autoscriptvector ...

JS::DeflateStringToUTF8Buffer
str)); if (!flatstr) return false; size_t length = js::getdeflatedutf8stringlength(flatstr); char* buffer = static_cast<char*>(js_malloc(cx, length + 1)); if (!buffer) return false; js::deflatestringtoutf8buffer(flatstr, mozilla::rangedptr<char>(buffer, length)); buffer[length] = '\0'; printf("utf8: [%s]\n", buffer); js_free(cx, buffer); see also js::getdeflatedutf8stringlength bug 1034627 bug 1271014 -- added dstlenp and numcharsp ...

JS::GetDeflatedUTF8StringLength
see also js::deflatestringtoutf8buffer bug 1034627 ...

JS::SetLargeAllocationFailureCallback
see also mxr id search for js::setlargeallocationfailurecallback mxr id search for js::largeallocationfailurecallback bug 936236 bug 987995 - added data parameter ...

JS::ToBoolean
it implements the toboolean operation described in ecma 262 §7.1.2.this function can not fail and the return value is always the boolean conversion of the argument.

JS::ToInt32
it implements the toint32 operator described in ecma 262-3 §9.5.

JS::ToNumber
it implements the tonumber operator described in ecma 262-3 §9.3.

JS::ToUint16
it implements the toint16 operator described in ecma 262-3 §9.7.

JS::ToUint32
it implements the touint32 operator described in ecma 262-3 §9.5.

JSClass.flags
if the global object does not have this flag, then scripts may cause nonstandard behavior by replacing standard constructors or prototypes (such as function.prototype.) objects that can end up with the wrong prototype object, if this flag is not present, include: arguments objects (ecma 262-3 §10.1.8 specifies "the original object prototype"), function objects (ecma 262-3 §13.2 specifies "the original function prototype"), and objects created by many standard constructors (ecma 262-3 §15.4.2.1 and others).

JSExtendedClass.wrappedObject
a wrapper object that wraps an array is considered an array for the purpose of array.prototype.concat and array.concat (which treat array arguments differently from other arguments, per ecma 262-3 §15.4.4.4).

JSObjectOps.defaultValue
description the jsobjectops.defaultvalue callback corresponds to the [[defaultvalue]] method defined in ecma 262-3 §8.6.2.6.

JSObjectOps.getProperty
this reflects the quirky behavior of delete as specified in ecma 262-3 §11.4.1 and ecma 262-3 §8.6.2.5.

JSPropertyOp
this is typically the value of the left-hand side after assignment, as opposed to the value of the right-hand side, as required by ecma 262-3 §11.13.

JSPropertySpec
n array of jspropertyspec, use js_psg, js_psgs, js_self_hosted_get, js_self_hosted_getset, and js_ps_end see also mxr id search for jspropertyspec jsfunctionspec jsnativewrapper js_defineproperties js_psg js_psgs js_self_hosted_get js_self_hosted_getset js_ps_end bug 766448 - changed type of getter and setter to wrapper bug 938728 - added selfhostedgetter and selfhostedsetter bug 958262 - changed type of getter and setter to union, and removed selfhostedgetter and selfhostedsetter.

JSVersion
24 100 javascript 1.0 "1.0" jsversion_1_1obsolete since jsapi 24 110 javascript 1.1 "1.1" jsversion_1_2obsolete since jsapi 24 120 javascript 1.2 "1.2" jsversion_1_3obsolete since jsapi 24 130 javascript 1.3 "1.3" jsversion_1_4obsolete since jsapi 24 140 javascript 1.4 "1.4" jsversion_ecma_3 148 ecma 262 edition 3 "ecmav3" jsversion_1_5obsolete since jsapi 24 150 javascript 1.5 "1.5" jsversion_1_6 160 javascript 1.6 "1.6" jsversion_1_7 170 javascript 1.7 "1.7" jsversion_1_8 180 javascript 1.8 "1.8" jsversion_ecma_5 185 ecma 262 edition 5 "ecmav5" jsversion_default 0 latest javascript versio...

JS_ClearNewbornRoots
see also bug 572057 bug 659462 ...

JS_CompareStrings
this function imposes a total order on all javascript strings, the same order imposed by the javascript string comparison operators (<, <=, >, >=), as described in ecma 262-3 § 11.8.5.

JS_EnumerateDiagnosticMemoryRegions
see also mxr id search for js_enumeratediagnosticmemoryregions mxr id search for jsenumeratediagnosticmemorycallback bug 662646 ...

JS_ExecuteScript
in ecmascript terms, the script is executed in a new execution context, but that context is not initialized quite as described in any of the three cases in ecma 262-3 §10.2.

JS_ExecuteScriptVersion
in ecmascript terms, the script is executed in a new execution context, but that context is not initialized quite as described in any of the three cases in ecma 262-3 §10.2.

JS_GetFunctionArity
otherwise fun is implemented in javascript, and the result is the number of identifiers in its formal parameter list (see ecma 262-3 §13).

JS_GetFunctionFlags
see ecma 262-3 §13.

JS_GetGCParameter
see also mxr id search for js_getgcparameter mxr id search for js_setgcparameter bug 474801 jsgc_bytes jsgc_number bug 474497 jsgc_max_code_cache_bytes this option no-longer exists js_getgcparameterforthread js_setgcparameterforthread bug 624229 jsgc_mode bug 631733 jsgc_unused_chunks bug 674480 jsgc_total_chunks bug 641025 jsgc_slice_time_budget bug 673551 jsgc_mark_stack_limit bug 765435 jsgc_high_frequency_time_limit jsgc_high_frequency_low_limit jsgc_high_frequency_high_limit jsgc_high_frequency_heap_growth_max jsgc_high_frequency_heap_growth_min jsg...

JS_GetScopeChain
the ecmascript standard, ecma 262-3 §10, describes execution contexts and scope chains.

JS_GetStringCharAt
see also mxr id search for js_getstringcharat mxr id search for js_getflatstringcharat bug 1034627 ...

JS_GetTwoByteExternalStringChars
see also mxr id search for js_gettwobyteexternalstringchars js_getlatin1flatstringchars js_gettwobyteflatstringchars js_getlatin1stringcharsandlength js_gettwobytestringcharsandlength js_getlatin1internedstringchars js_gettwobyteinternedstringchars bug 1034627 ...

JS_InitStandardClasses
these include all the standard ecmascript global properties defined in ecma 262-3 §15.1: array, boolean, date, decodeuri, decodeuricomponent, encodeuri, encodeuricomponent, error, eval, evalerror, function, infinity, isnan, isfinite, math, nan, number, object, parseint, parsefloat, rangeerror, referenceerror, regexp, string, syntaxerror, typeerror, undefined, and urierror as well as a few spidermonkey-specific globals, depending on compile-time options: escape, unes...

JS_IsIdentifier
see also mxr id search for js_isidentifier js_valuetoid bug 692627 bug 990484 ...

JS_LookupElement
the ecmascript standard also specifies this behavior: see ecma 262-3 §11.2.1, step 6.

JS_LooselyEqual
description js_looselyequal determines if v1 is loosely equal to v2 under the javascript == operator, as specified in ecma 262-3 §11.9.3.

JS_New
obsolete since jsapi 32 description js_new creates a new object as though by using the new operator, as described in ecma 262-3 §11.2.2.

JS_NewDateObject
see also mxr id search for js_newdateobject js_newdateobjectmsec js_objectisdate bug 625870 ...

JS_NewDateObjectMsec
see also mxr id search for js_newdateobjectmsec js_newdateobject js_objectisdate bug 625870 ...

JS_NewRuntime
see also mxr id search for js_newruntime js_init js_destroyruntime js_shutdown bug 714050 - added usehelperthreads parameter bug 964059 - added parentruntime parameter bug 941805 - removed usehelperthreads parameter bug 1034621 - added maxnurserybytes parameter bug 1286795 - js_newruntime is renamed to js_newcontext ...

JS_NewUCString
see also js_convertvalue js_getemptystringvalue js_getstringbytes js_getstringchars js_getstringlength js_internstring js_internucstring js_internucstringn js_newstringcopyn js_newstringcopyz js_newucstringcopyn js_newucstringcopyz js_valuetostring bug 618262 - removed js_newstring ...

JS_ObjectIsDate
see also mxr id search for js_objectisdate js_newdateobject js_newdateobjectmsec bug 625870 ...

JS_SameValue
this article covers features introduced in spidermonkey 1.8.1 determines if two jsvals are the same, as determined by the samevalue algorithm in ecmascript 262, 5th edition.

JS_SetCallReturnValue2
causes a native to return a reference value (as allowed by ecma 262-3 §11.2.3).

JS_SetOptions
mxr id search for jsoption_relimit jsoption_anonfunfix added in spidermonkey 1.8 disallow function () {} in statement context, per ecma-262 edition 3.

JS_StrictlyEqual
description js_strictlyequal determines if v1 is strictly equal to v2 under the javascript === operator, as specified in ecma 262-3 §11.9.6.

JS_ValueToSource
see also bug 462910 ...

Property attributes
some property attributes are defined in the ecmascript standard, in ecma 262-3 §8.6.1.

jsdouble
see ecma 262-3 §8.5.

Parser API
note: e4x is not part of the ecmascript standard (ecma-262), but is a separate standard of its own (ecma-357).

SpiderMonkey 1.8
the new behavior conforms to the ecmascript standard, ecma 262-3 §11.13.1.

SpiderMonkey 45
19) js::getsavedframefunctiondisplayname (bug 1216819) js::getsavedframeasynccause (bug 1216819) js::getsavedframeasyncparent (bug 1216819) js::getsavedframeparent (bug 1216819) js::buildstackstring (bug 1133191) js::flushperformancemonitoring (bug 1181175) js::resetperformancemonitoring (bug 1181175) js::disposeperformancemonitoring (bug 1208747) js::setstopwatchismonitoringcpow (bug 1156264) js::getstopwatchismonitoringcpow (bug 1156264) js::setstopwatchismonitoringjank (bug 1156264) js::getstopwatchismonitoringjank (bug 1156264) js::isstopwatchactive (bug 674779) js::getperfmonitoringtestcpurescheduling (bug 1181175) js::addcpowperformancedelta (bug 1181175) js::setstopwatchstartcallback (bug 1208747) js::setstopwatchcommitcallback (bug 1208747) js::setgetperformancegrou...

Running Parsemark
download the suite of parse tests from bug 548621 and decompress them.

SavedFrame
source metadata generated from file: js/src/doc/savedframe/savedframe.md watermark: sha256:3475238d6704c659cb3e411b9c601d6ee836762dea14203f1f00ecf2c3b32452 changeset: 251fccc1f62b ...

Setting up the Gecko SDK
cspecialthing.h #ifndef __specialthing_impl_h__ #define __specialthing_impl_h__ #include "ispecialthing.h" #include "nsstringapi.h" #define specialthing_contractid "@starkravingfinkle.org/specialthing;1" #define specialthing_classname "specialthing" #define specialthing_cid { 0x245626, 0x5cc1, 0x11db, { 0x96, 0x73, 0x0, 0xe0, 0x81, 0x61, 0x16, 0x5f } } class cspecialthing : public ispecialthing { public: ns_decl_isupports ns_decl_ispecialthing cspecialthing(); private: ~cspecialthing(); protected: /* additional members */ nsstring mname; }; #endif cspecialthing.cpp #include "cspecialthing.h" ns_impl_isupports1(cspecialthing, ispecialthing) cs...

How to build a binary XPCOM component using Visual Studio
they could look like this: h file: #ifndef __specialthing_impl_h__ #define __specialthing_impl_h__ #include "comp.h" #include "nsstringapi.h" #define specialthing_contractid "@starkravingfinkle.org/specialthing;1" #define specialthing_classname "specialthing" #define specialthing_cid { 0x245626, 0x5cc1, 0x11db, { 0x96, 0x73, 0x0, 0xe0, 0x81, 0x61, 0x16, 0x5f } } class cspecialthing : public ispecialthing { public: ns_decl_isupports ns_decl_ispecialthing cspecialthing(); private: ~cspecialthing(); protected: /* additional members */ nsstring mname; }; #endif cpp file: #include "comp-impl.h" ns_impl_isupports1(cspecialthing, ispecialthing) cspecialthing::cspecialthing() { ...

Profiling XPCShell
a profile will look like this: file:///users/michiel/mozilla/tree1/...js/calutils.js [2,25420] createdatetime() {60-62} 579 {min 0, max 3, avg 0, sum 427, self 427} [2,56810] cp_qi() {860-866} 835 {min 0, max 1, avg 0, sum 950, self 950} the first line tells which file was profiled.

NS_GetMemoryManager
see bug 112262 for details.

nsIAccessibleRole
role_splitbutton 62 represents a button on a toolbar that has a drop-down list icon directly adjacent to the button.

nsIBidiKeyboard
more info: bug 348724, bug 348724, and gnome bug: 116626 mac only islangrtl is supported on this platform.

nsIJSIID
« xpcom api reference summary [scriptable, uuid(e08dcda0-d651-11d2-9843-006008962422)] interface nsijsiid : nsijsid {}; ...

nsIMacDockSupport
this is created by using the dockmenu attribute of nsimacdocksupport here: http://mxr.mozilla.org/mozilla-release/source/browser/base/content/browser.js#1562 this is seen here: if you were to copy and follow that example you would replace the default native menu.

nsIPromptService
see bug 624043 for more on this.

nsIProperties
see bug 162114 for details.

nsIWindowMediator
this method may not work on linux or mac (bug 462222) nor on os2 (bug 370134) - please check those bugs before relying on it.

nsIXMLHttpRequest
you only want this if your url is to a zip file or some file you want to download and make a nsiarraybufferinputstream out of it or something xhr.send(null); } xhr('https://www.gravatar.com/avatar/eb9895ade1bd6627e054429d1e18b576?s=24&d=identicon&r=pg&f=1', data => { services.prompt.alert(null, 'xhr success', data); var file = os.path.join(os.constants.path.desktopdir, "test.png"); var promised = os.file.writeatomic(file, new uint8array(data)); promised.then( function() { alert('succesfully saved image to desktop') }, function(ex) { alert('f...

nsMsgSearchScope
defined in comm-central/ mailnews/ base/ search/ public/ nsmsgsearchcore.idl [scriptable, uuid(6e893e59-af98-4f62-a326-0f00f32147cd)] interface nsmsgsearchscope { const nsmsgsearchscopevalue offlinemail = 0; const nsmsgsearchscopevalue offlinemailfilter = 1; const nsmsgsearchscopevalue onlinemail = 2; const nsmsgsearchscopevalue onlinemailfilter = 3; /// offline news, base table, no body or junk const nsmsgsearchscopevalue localnews = 4; const nsmsgsearchscopevalue news = 5; const nsmsgsearchscopevalue newsex = 6; const nsmsgsearchscopevalue ldap = 7; const nsmsgsearchscopevalue localab = 8; const nsmsgsearchscopevalue allsearchablegroups = 9; const nsmsgsearchscopevalue newsfilter = 10; const nsmsgsearchscopevalue localaband = 11; const nsmsgsearchscope...

nsMsgSearchOpValue
is also applies */ 160 const nsmsgsearchopvalue islowerthan = 8; 161 162 const nsmsgsearchopvalue beginswith = 9; 163 const nsmsgsearchopvalue endswith = 10; 164 165 const nsmsgsearchopvalue soundslike = 11; /* for ldap phoenetic matching */ 166 const nsmsgsearchopvalue ldapdwim = 12; /* do what i mean for simple search */ 167 168 const nsmsgsearchopvalue isgreaterthan = 13; 169 const nsmsgsearchopvalue islessthan = 14; 170 171 const n...

Storage
due to bug 626193, locked databases get unlocked when you call this.

Working with Multiple Versions of Interfaces
unfortunately we compiled this in the latest sdk, and so this magic number happens to be: "244e4c67-a1d3-44f2-9cab-cdaa31b68046" whereas, inside firefox 2, the iid it happens to know about is: "663ca4a8-d219-4000-925d-d8f66406b626".

Standard OS Libraries
components.utils.import("resource://gre/modules/ctypes.jsm"); var lib = ctypes.open("user32.dll"); /* note: if you go to getcursorpos page on msdn, it says first argument is of structure point, so lets create that structure, * the link here shows that that x and y are type long which is ctypes.long */ // https://msdn.microsoft.com/en-us/library/windows/desktop/dd162805%28v=vs.85%29.aspx var point = new ctypes.structtype("tagpoint", [ { "x": ctypes.long }, { "y": ctypes.long } ]); /* declare the signature of the function we are going to call */ var getcursorpos = lib.declare('getcursorpos', ctypes.winapi_abi, ctypes.bool, point.ptr ); /* use it like this */ var point = point(); var ret = getcursorpos(point.address()); components.utils.repor...

Mozilla
mozilla port blocking on 08/15/2001, cert issued a vulnerability note vu#476267 for a "cross-protocol" scripting attack, known as the html form protocol attack which allowed sending arbitrary data to most tcp ports.

Accessibility Inspector - Firefox Developer Tools
note that this works correctly as of firefox 62 (bug 1467381).

Debugger.Memory - Firefox Developer Tools
source metadata generated from file: js/src/doc/debugger/debugger.memory.md watermark: sha256:2c1529d6932efec8c624a6f1f366b09cb7fce625a6468657fab81788240bc7ae changeset: e91b2c85aacd ...

Debugger.Source - Firefox Developer Tools
source metadata generated from file: js/src/doc/debugger/debugger.source.md watermark: sha256:5ca245813db96628aab1c78b803355eb2aa8c575839c67eb7d7bde177898df88 changeset: e91b2c85aacd ...

Tutorial: Show Allocations Per Call Path - Firefox Developer Tools
(it is unclear why spanfactory allocated thirteen objects, despite being called only ten times.) source metadata generated from file: js/src/doc/debugger/tutorial-alloc-log-tree.md watermark: sha256:b56f6df61c39dbe19ca1f49752aea42207c804355513f4fea8249bdeb4cb056d changeset: 251fccc1f62b ...

Deprecated tools - Firefox Developer Tools
removed as of firefox 71 (bug 1539462).

Network request details - Firefox Developer Tools
the samesite attribute has been shown since firefox 62 (bug 1452715).

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

UI Tour - Firefox Developer Tools
the following image shows the 2-pane layout: in 2-pane mode, the inspector includes the html pane, and the css pane, which can contain one of six tools: rules view layout view computed view changes view compatibility view (firefox developer edition 77 and later) fonts view animations view the following image shows the 3-pane mode (available from firefox 62 onwards) which moves the css rules view into a separate pane in the center of the inspector.

Taking screenshots - Firefox Developer Tools
taking screenshots with the web console if you need to specify a different device-pixel-ratio, set a delay before taking the screenshot, or specify your own file name, starting in firefox 62 you can use the :screenshot helper function in the web console.

Toolbox - Firefox Developer Tools
this is what it looks like when it's docked: the window itself is split into two parts: a toolbar along the top, and a main pane underneath: note: since firefox 62, you can drag and drop tabs in the main toolbar of the toolbox to reorder your tools as you wish (bug 1226272).

Web Console Helpers - Firefox Developer Tools
help()deprecated since gecko 62 :help displays help text.

DOMHighResTimeStamp - Web APIs
// reduced time precision (2ms) in firefox 60 event.timestamp // 1519211809934 // 1519211810362 // 1519211811670 // ...

Document.cookie - Web APIs
note that each key and value may be surrounded by whitespace (space and tab characters): in fact, rfc 6265 mandates a single space after each semicolon, but some user agents may not abide by this.

Document: scroll event - Web APIs
see bootstrap issue #16202.

Element: scroll event - Web APIs
see bootstrap issue #16202.

Event.timeStamp - Web APIs
// reduced time precision (2ms) in firefox 60 event.timestamp; // 1519211809934 // 1519211810362 // 1519211811670 // ...

ExtendableEvent - Web APIs
var cache_version = 1; var current_caches = { prefetch: 'prefetch-cache-v' + cache_version }; self.addeventlistener('install', function(event) { var urlstoprefetch = [ './static/pre_fetched.txt', './static/pre_fetched.html', 'https://www.chromium.org/_/rsrc/1302286216006/config/customlogo.gif' ]; console.log('handling install event.

File.lastModified - Web APIs
// reduced time precision (2ms) in firefox 60 somefile.lastmodified; // 1519211809934 // 1519211810362 // 1519211811670 // ...

File.lastModifiedDate - Web APIs
// reduced time precision (2ms) in firefox 60 somefile.lastmodifieddate.gettime(); // 1519211809934 // 1519211810362 // 1519211811670 // ...

InstallEvent - Web APIs
var cache_version = 1; var current_caches = { prefetch: 'prefetch-cache-v' + cache_version }; self.addeventlistener('install', function(event) { var urlstoprefetch = [ './static/pre_fetched.txt', './static/pre_fetched.html', 'https://www.chromium.org/_/rsrc/1302286216006/config/customlogo.gif' ]; console.log('handling install event.

performance.now() - Web APIs
// reduced time precision with `privacy.resistfingerprinting` enabled performance.now(); // 8865400 // 8866200 // 8866700 // ...

PushSubscription.getKey() - Web APIs
the resulting key is an uncompressed point in ansi x9.62 format.

TextDecoder() - Web APIs
4' "csisolatin9", "iso-8859-15", "iso8859-15", "iso885915", "l9", "latin9" 'iso-8859-15' "iso-8859-16" 'iso-8859-16' "cskoi8r", "koi", "koi8", "koi8-r", "koi8_r" 'koi8-r' "koi8-u" 'koi8-u' "csmacintosh", "mac", "macintosh", "x-mac-roman" 'macintosh' "dos-874", "iso-8859-11", "iso8859-11", "iso885911", "tis-620", "windows-874" 'windows-874' "cp1250", "windows-1250", "x-cp1250" 'windows-1250' "cp1251", "windows-1251", "x-cp1251" 'windows-1251' "ansi_x3.4-1968", "ascii", "cp1252", "cp819", "csisolatin1", "ibm819", "iso-8859-1", "iso-ir-100", "iso8859-1", "iso88591", "iso_8859-1", "iso_8859-1:1987", "l1", "latin1", "us-ascii", "windows-1252", "x-cp1252" ...

TextMetrics.emHeightAscent - Web APIs
examples const canvas = document.createelement('canvas'); const ctx = canvas.getcontext('2d'); const text = ctx.measuretext('foo'); // returns textmetrics object text.emheightascent; // 7.59765625; specifications specification html living standardthe definition of 'textmetrics.emheightascent' in that specification.

TextMetrics - Web APIs
et the absolute text width: const canvas = document.getelementbyid('canvas'); const ctx = canvas.getcontext('2d'); const text = 'abcdefghijklmnop'; ctx.font = 'italic 50px serif'; const textmetrics = ctx.measuretext(text); console.log(textmetrics.width); // 459.8833312988281 console.log(math.abs(textmetrics.actualboundingboxleft) + math.abs(textmetrics.actualboundingboxright)); // 462.8833333333333 specifications specification html living standardthe definition of 'textmetrics' in that specification.

WEBGL_compressed_texture_astc - Web APIs
constants blocks bits per pixel arraybuffer bytelength bytes if height and width are 512 ext.compressed_rgba_astc_4x4_khr ext.compressed_srgb8_alpha8_astc_4x4_khr 4x4 8.00 floor((width + 3) / 4) * floor((height + 3) / 4) * 16 262144 ext.compressed_rgba_astc_5x4_khr ext.compressed_srgb8_alpha8_astc_5x4_khr 5x4 6.40 floor((width + 4) / 5) * floor((height + 3) / 4) * 16 210944 ext.compressed_rgba_astc_5x5_khr ext.compressed_srgb8_alpha8_astc_5x5_khr 5x5 5.12 floor((width + 4) / 5) * floor((height + 4) / 5) * 16 169744 ext.compressed_rgba_astc_6x5_khr ext.compre...

WebGL best practices - Web APIs
a good pattern for "always give me the highest precision": #ifdef gl_fragment_precision_high precision highp float; #else precision mediump float; #endif essl100 minimum requirements (webgl 1) float think range min above zero precision highp float24* (-2^62, 2^62) 2^-62 2^-16 relative mediump ieee float16 (-2^14, 2^14) 2^-14 2^-10 relative lowp 10-bit signed fixed (-2, 2) 2^-8 2^-8 absolute int think range highp int17 (-2^16, 2^16) mediump int11 (-2^10, 2^10) lowp int9 (-2^8, 2^8) *float24: sign bit, 7-bit for exponent, 16-bi...

Controlling multiple parameters with ConstantSourceNode - Web APIs
function startoscillators() { oscnode1 = context.createoscillator(); oscnode1.type = "sine"; oscnode1.frequency.value = 261.625565300598634; // middle c oscnode1.connect(gainnode1); oscnode2 = context.createoscillator(); oscnode2.type = "sine"; oscnode2.frequency.value = 329.627556912869929; // e oscnode2.connect(gainnode2); oscnode3 = context.createoscillator(); oscnode3.type = "sine"; oscnode3.frequency.value = 391.995435981749294 // g oscnode3.connect(gainnode3); oscnode1.start(); oscnode2.sta...

Using Web Workers - Web APIs
note: in firefox, shared workers cannot be shared between documents loaded in private and non-private windows (bug 1177621).

Window.navigator - Web APIs
srag.indexof("trident") > -1) { sbrowser = "microsoft internet explorer"; // "mozilla/5.0 (windows nt 10.0; wow64; trident/7.0; .net4.0c; .net4.0e; zoom 3.6.0; wbx 1.0.0; rv:11.0) like gecko" } else if (susrag.indexof("edge") > -1) { sbrowser = "microsoft edge"; // "mozilla/5.0 (windows nt 10.0; win64; x64) applewebkit/537.36 (khtml, like gecko) chrome/58.0.3029.110 safari/537.36 edge/16.16299" } else if (susrag.indexof("chrome") > -1) { sbrowser = "google chrome or chromium"; // "mozilla/5.0 (x11; linux x86_64) applewebkit/537.36 (khtml, like gecko) ubuntu chromium/66.0.3359.181 chrome/66.0.3359.181 safari/537.36" } else if (susrag.indexof("safari") > -1) { sbrowser = "apple safari"; // "mozilla/5.0 (iphone; cpu iphone os 11_4 like mac os x) applewebkit/605.1.15 (khtml, like...

Window.pageYOffset - Web APIs
css iframe { width: 620px; height: 450px; border: 1px solid black; } #info { margin-top: 20px; font: 16px "open sans", "helvetica", "arial"; } result the result follows.

Window.pkcs11 - Web APIs
see bug 326628 for details on why the property was removed.

XSL Transformations in Mozilla FAQ - Web APIs
see the discussion on bug #338621 for more information.

ARIA: gridcell role - Accessibility
<div role="gridcell">142,984</div> <div role="gridcell">9.9</div> <div role="gridcell">778.6</div> <div role="gridcell">67</div> </div> </div> <div role="rowgroup"> <div role="row"> <div role="gridcell">saturn</div> <div role="gridcell">120,536</div> <div role="gridcell">10.7</div> <div role="gridcell">1433.5</div> <div role="gridcell">62</div> </div> </div> </div> accessibility concerns support for gridcell and certain gridcell-related aria roles and properties have poor support with assistive technologies.

ARIA: switch role - Accessibility
h: 70px; height: 26px; border: 2px solid black; display: inline-block; margin-right: 0.25em; line-height: 20px; vertical-align: middle; text-align: center; font: 12px "open sans", "arial", serif; } button.switch span { padding: 0 4px; pointer-events: none; } [role="switch"][aria-checked="false"] :first-child, [role="switch"][aria-checked="true"] :last-child { background: #262; color: #eef; } [role="switch"][aria-checked="false"] :last-child, [role="switch"][aria-checked="true"] :first-child { color: #bbd; } label.switch { font: 16px "open sans", "arial", sans-serif; line-height: 20px; user-select: none; vertical-align: middle; -moz-user-select: none; -ms-user-select: none; -webkit-user-select: none; -o-user-select: none; } the most interesting p...

Accessibility documentation index - Accessibility
62 aria: figure role aria, aria role, aria figure, accessibility, reference, rôle, figure the aria figure role can be used to identify a figure inside page content where appropriate semantics do not already exist.

font-stretch - CSS: Cascading Style Sheets
keyword to numeric mapping the table below shows the mapping between keyword values and numeric percentages: keyword percentage ultra-condensed 50% extra-condensed 62.5% condensed 75% semi-condensed 87.5% normal 100% semi-expanded 112.5% expanded 125% extra-expanded 150% ultra-expanded 200% variable fonts most fonts have a particular width which corresponds to one of the keyterm values.

Border-image generator - CSS: Cascading Style Sheets
span id="out-border-source" class="value"> </span> </div> </div> </div> </div> css content /* grid of twelve * ========================================================================== */ .span_12 { width: 100%; } .span_11 { width: 91.46%; } .span_10 { width: 83%; } .span_9 { width: 74.54%; } .span_8 { width: 66.08%; } .span_7 { width: 57.62%; } .span_6 { width: 49.16%; } .span_5 { width: 40.7%; } .span_4 { width: 32.24%; } .span_3 { width: 23.78%; } .span_2 { width: 15.32%; } .span_1 { width: 6.86%; } /* sections * ========================================================================== */ .section { clear: both; padding: 0px; margin: 0px; } /* grouping * =====================================================...

Border-radius generator - CSS: Cascading Style Sheets
ction"> <div class="info"> select border units </div> </div> </div> </div> </div> css content /* grid of ten * ========================================================================== */ .span_12 { width: 100%; } .span_11 { width: 91.46%; } .span_10 { width: 83%; } .span_9 { width: 74.54%; } .span_8 { width: 66.08%; } .span_7 { width: 57.62%; } .span_6 { width: 49.16%; } .span_5 { width: 40.7%; } .span_4 { width: 32.24%; } .span_3 { width: 23.78%; } .span_2 { width: 15.32%; } .span_1 { width: 6.86%; } /* sections * ========================================================================== */ .section { clear: both; padding: 0px; margin: 0px; } /* grouping * ===================================================...

Box-shadow generator - CSS: Cascading Style Sheets
m -ms-transform"> </div> </div> </div> </div> </div> </div> css content /* grid of twelve * ========================================================================== */ .span_12 { width: 100%; } .span_11 { width: 91.46%; } .span_10 { width: 83%; } .span_9 { width: 74.54%; } .span_8 { width: 66.08%; } .span_7 { width: 57.62%; } .span_6 { width: 49.16%; } .span_5 { width: 40.7%; } .span_4 { width: 32.24%; } .span_3 { width: 23.78%; } .span_2 { width: 15.32%; } .span_1 { width: 6.86%; } /* sections * ========================================================================== */ .section { clear: both; padding: 0px; margin: 0px; } /* grouping * =====================================================...

Web Audio playbackRate explained - Developer guides
next we set playbackrate to 0.5, which represents half normal speed (the playbackrate is a multiplier applied to the original rate.) a complete example let's create a <video> element first, and set up video and playback rate controls in html: <video id="myvideo" controls> <source src="https://udn.realityripple.com/samples/6f/08625b424a.m4v" type='video/mp4' /> <source src="https://udn.realityripple.com/samples/5b/8cd6da9c65.webm" type='video/webm' /> </video> <form> <input id="pbr" type="range" value="1" min="0.5" max="4" step="0.1" > <p>playback rate <span id="currentpbr">1</span></p> </form> and apply some javascript to it: window.onload = function () { var v = document.getelementbyid("myvideo"); var p = d...

Rich-Text Editing in Mozilla - Developer guides
bajqcgaaaaad0su1fb9oebxczfmgboiwaaaaidevydenvbw1lbnqa9sywvwaaaufjrefuomvtlutsjfeux//n3nn0ydpbh1abrpt4lfqtqkc3jrkkneisiiribbehjjpklivo4m1rrmkkjqirmjruqudkpt71qpipirkpaqdf55tv5vvuszjqtjolseukd3xu/3dpzusc/22wtu2wrn+jg5so/ocdh8ycmjdflehmlkjkvk7kuyn+ufza/rtth76zavocdptrxzqtni3mrwupc+6cktlxz/sddp2uu9uxlmyxz6qm8v4tz8lhf1h+zdqxt7s8olmxtbf4e8qafhjj3kbp2mzkkthpitjp9vh6ihia+whtasx5brpwuemgdondf/2a4m7ukds1jw662+xkqtkeuoqjktojm2h53yfl15psj04zc94wdtibr26fxlc2mzrvbccebz2kirfd414tkmlezbvgt33+qcohgha81swysew0r1uzfnylmtpx80pngqq91lwvk2jgvgnfvzg6ycyrat16gftw5kkkfo1eqltfh5q2ett0biwf+aitq4fdbk+imyo1oxvgf03wafjqvbckvdffryetxqiffygazths0zwagd7fg5tnnyntp8/fzvgwjofmgg7gox0sakkgqgdmgkbi0njgmeimpgdk5+wacewed0ywblhguz4hw5oduekrblt7dtgdegxacsiznx8zpmwh7k4rkpjcuhdxcul6mdsmmbxdlwch2+xozsgbnzsncee4euyv4pwcpswypw0uhdybkswu1...

Making content editable - Developer guides
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...

Applying color to HTML elements using CSS - HTML: Hypertext Markup Language
.wrapper { width: 620px; height: 110px; margin: 0; padding: 10px; border: 6px solid mediumturquoise; } the .wrapper class is used to assign styles to the <div> that encloses all of our other content.

Date and time formats used in HTML - HTML: Hypertext Markup Language
examples of valid date strings date string full date 1993-11-01 november 1, 1993 1066-10-14 october 14, 1066 0571-04-22 april 22, 571 0062-02-05 february 5, 62 time strings a time string can specify a time with precision to the minute, second, or to the millisecond.

<input type="date"> - HTML: Hypertext Markup Language
for example: var datecontrol = document.queryselector('input[type="date"]'); datecontrol.value = '2017-06-01'; console.log(datecontrol.value); // prints "2017-06-01" console.log(datecontrol.valueasnumber); // prints 1496275200000, a unix timestamp this code finds the first <input> element whose type is date, and sets its value to 2017-06-01 (june 1st, 2017).

<samp>: The Sample Output element - HTML: Hypertext Markup Language
for example, consider this text presenting a transcript of a linux (or macos) console session: html <pre> <samp><span class="prompt">mike@interwebz:~$</span> <kbd>md5 -s "hello world"</kbd> md5 ("hello world") = 3e25960a79dbc69b674cd4ec67a72c62 <span class="prompt">mike@interwebz:~$</span> <span class="cursor">█</span></samp></pre> note the use of <span> to allow customization of the appearance of specific portions of the sample text such as the shell prompts and the cursor.

itemtype - HTML: Hypertext Markup Language
itemscope itemtype schema.org product itemprop name executive anvil itemprop brand [thing] itemprop name acme example html <div itemscope itemtype="http://schema.org/product"> <span itemprop="brand">acme<br></span> <span itemprop="name">executive anvil<br></span> <img itemprop="image" src="https://udn.realityripple.com/samples/61/fa8ee62aba.png" width="50" height="50" alt="executive anvil logo" /><br> <span itemprop="description">sleeker than acme's classic anvil, the executive anvil is perfect for the business traveler looking for something to drop from a height.

Browser detection using the user agent - HTTP
mozilla/5.0 (windows phone 10.0; android 6.0.1; xbox; xbox one) applewebkit/537.36 (khtml, like gecko) chrome/58.0.3029.110 mobile safari/537.36 edge/16.16299 in summary, we recommend looking for the string “mobi” anywhere in the user agent to detect a mobile device.

Configuring servers for Ogg media - HTTP
the output from oggz-info looks like this: $ oggz-info /g/media/bruce_vs_ironman.ogv content-duration: 00:01:00.046 skeleton: serialno 1976223438 4 packets in 3 pages, 1.3 packets/page, 27.508% ogg overhead presentation-time: 0.000 basetime: 0.000 theora: serialno 0170995062 1790 packets in 1068 pages, 1.7 packets/page, 1.049% ogg overhead video-framerate: 29.983 fps video-width: 640 video-height: 360 vorbis: serialno 0708996688 4531 packets in 167 pages, 27.1...

Content-Disposition - HTTP
: post /test.html http/1.1 host: example.org content-type: multipart/form-data;boundary="boundary" --boundary content-disposition: form-data; name="field1" value1 --boundary content-disposition: form-data; name="field2"; filename="example.txt" value2 --boundary-- specifications specification title rfc 7578 returning values from forms: multipart/form-data rfc 6266 use of the content-disposition header field in the hypertext transfer protocol (http) rfc 2183 communicating presentation information in internet messages: the content-disposition header field ...

CSP: style-src - HTTP
content-security-policy: style-src 'sha256-a330698cbe9dc4ef1fb12e2ee9fc06d5d14300262fa4dc5878103ab7347e158f' when generating the hash, don't include the <style> tags and note that capitalization and whitespace matter, including leading or trailing whitespace.

Cookie - HTTP
examples cookie: phpsessid=298zf09hf012fh2; csrftoken=u32t4o3tb3gg43; _gat=1 specifications specification title rfc 6265, section 5.4: cookie http state management mechanism ...

Cookie2 - HTTP
header type request header forbidden header name yes examples cookie2: $version="1" specifications specification title rfc 2965: cookie2 historic specification of http state management mechanism, obsoleted by rfc 6265 ...

Index - HTTP
62 expires caching, http, response, header the expires header contains the date/time after which the response is considered stale.

SameSite cookies - HTTP
iterule;02;https://www.example.org;30/;samesite=none;secure] rewriterule "^(.*)\.html$" "index.php?nav=$1 [nc,l,qsa,co=rewriterule;03;https://www.example.org;30/;samesite=none;secure] [...] rewriterule "^admin/(.*)\.html$" "admin/index.php?nav=$1 [nc,l,qsa,co=rewriterule;09;https://www.example.org:30/;samesite=strict;secure] specifications specification title rfc 6265, section 4.1: set-cookie http state management mechanism draft-ietf-httpbis-rfc6265bis-05 cookie prefixes, same-site cookies, and strict secure cookies ...

Set-Cookie - HTTP
secure-id=123; secure; domain=example.com set-cookie: __host-id=123; secure; path=/ // rejected due to missing secure attribute set-cookie: __secure-id=1 // rejected due to the missing path=/ attribute set-cookie: __host-id=1; secure // rejected due to setting a domain set-cookie: __host-id=1; secure; path=/; domain=example.com specifications specification title rfc 6265, section 4.1: set-cookie http state management mechanism draft-ietf-httpbis-rfc6265bis-05 cookie prefixes, same-site cookies, and strict secure cookies ...

Set-Cookie2 - HTTP
specifications specification title rfc 2965: set-cookie2 historic specification of http state management mechanism, obsoleted by rfc 6265 ...

HTTP
http cookies how cookies work is defined by rfc 6265.

JavaScript data types and data structures - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'ecmascript data types and values' in that specification.

Expressions and operators - JavaScript
ypeof size; // returns "number" typeof foo; // returns "object" typeof today; // returns "object" typeof doesntexist; // returns "undefined" for the keywords true and null, the typeof operator returns the following results: typeof true; // returns "boolean" typeof null; // returns "object" for a number or string, the typeof operator returns the following results: typeof 62; // returns "number" typeof 'hello world'; // returns "string" for property values, the typeof operator returns the type of value the property contains: typeof document.lastmodified; // returns "string" typeof window.length; // returns "number" typeof math.ln2; // returns "number" for methods and functions, the typeof operator returns results as follows: type...

Numbers and dates - JavaScript
properties of number property description number.max_value the largest representable number (±1.7976931348623157e+308) number.min_value the smallest representable number (±5e-324) number.nan special "not a number" value number.negative_infinity special negative infinite value; returned on overflow number.positive_infinity special positive infinite value; returned on overflow number.epsilon difference between 1 and the smallest value greater th...

Assertions - JavaScript
orangenotlemon.match(selectnotorangeregex)); // [ ' yes, i do not want to have a lemon!' ] lookbehind assertion let oranges = ['ripe orange a ', 'green orange b', 'ripe orange c',]; let ripe_oranges = oranges.filter( fruit => fruit.match(/(?<=ripe )orange/)); console.log(ripe_oranges); // [ 'ripe orange a ', 'ripe orange c' ] specifications specification ecmascript (ecma-262)the definition of 'regexp: assertions' in that specification.

Character classes - JavaScript
specifications specification ecmascript latest draft (ecma-262)the definition of 'regexp: character classes' in that specification.

Groups and ranges - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'regexp: ranges' in that specification.

Quantifiers - JavaScript
al times console.log(text.match(greedyregexp)[0]); // "i must be getting somewhere near the centre of the earth" // almost all of the text matches (leaves out the dot character) var nongreedyregexp = /[\w ]+?/; // notice the question mark console.log(text.match(nongreedyregexp)); // "i" // the match is the smallest one possible specifications specification ecmascript (ecma-262)the definition of 'regexp: quantifiers' in that specification.

Unicode property escapes - JavaScript
� Алисы в Стране чудес"; const regexpbmpword = /([\u0000-\u0019\u0021-\uffff])+/gu; // bmp goes through u+0000 to u+ffff but space is u+0020 console.table(nonenglishtext.match(regexpbmpword)); // using unicode property escapes instead const regexpupe = /\p{l}+/gu; console.table(nonenglishtext.match(regexpupe)); specifications specification ecmascript (ecma-262)the definition of 'regexp: unicode property escapes' in that specification.

Regular expressions - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'regexp' in that specification.

constructor - JavaScript
} class rectangle {} object.setprototypeof(square.prototype, rectangle.prototype); console.log(object.getprototypeof(square.prototype) === polygon.prototype); //false console.log(object.getprototypeof(square.prototype) === rectangle.prototype); //true let newinstance = new square(); console.log(newinstance.name); //polygon specifications specification ecmascript (ecma-262)the definition of 'constructor method' in that specification.

extends - JavaScript
class mydate extends date { getformatteddate() { var months = ['jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul', 'aug', 'sep', 'oct', 'nov', 'dec']; return this.getdate() + '-' + months[this.getmonth()] + '-' + this.getfullyear(); } } specifications specification ecmascript (ecma-262)the definition of 'extends' in that specification.

static - JavaScript
class staticmethodcall { constructor() { console.log(staticmethodcall.staticmethod()); // 'static method has been called.' console.log(this.constructor.staticmethod()); // 'static method has been called.' } static staticmethod() { return 'static method has been called.'; } } specifications specification ecmascript (ecma-262)the definition of 'class definitions' in that specification.

Classes - JavaScript
put can be used to implement mix-ins in ecmascript: let calculatormixin = base => class extends base { calc() { } }; let randomizermixin = base => class extends base { randomize() { } }; a class that uses these mix-ins can then be written like this: class foo { } class bar extends calculatormixin(randomizermixin(foo)) { } specifications specification ecmascript (ecma-262)the definition of 'class definitions' in that specification.

Deprecated and obsolete features - JavaScript
string.prototype.substr probably won't be removed anytime soon, but it's defined in annex b of the ecma-262 standard, whose introduction states: "… programmers should not use or assume the existence of these features and behaviours when writing new ecmascript code.

RangeError: invalid array length - JavaScript
examples invalid cases new array(math.pow(2, 40)) new array(-1) new arraybuffer(math.pow(2, 32)) new arraybuffer(-1) let a = []; a.length = a.length - 1; // set -1 to the length property let b = new array(math.pow(2, 32) - 1); b.length = b.length + 1; // set 2^32 to the length property valid cases [ math.pow(2, 40) ] // [ 1099511627776 ] [ -1 ] // [ -1 ] new arraybuffer(math.pow(2, 32) - 1) new arraybuffer(0) let a = []; a.length = math.max(0, a.length - 1); let b = new array(math.pow(2, 32) - 1); b.length = math.min(0xffffffff, b.length + 1); // 0xffffffff is the hexadecimal notation for 2^32 - 1 // which can also be written as (-1 >>> 0) ...

JavaScript error reference - JavaScript
: cyclic object valuetypeerror: invalid "instanceof" operand "x"typeerror: invalid array.prototype.sort argumenttypeerror: invalid argumentstypeerror: invalid assignment to const "x"typeerror: property "x" is non-configurable and can't be deletedtypeerror: setting getter-only property "x"typeerror: variable "x" redeclares argumenturierror: malformed uri sequencewarning: 08/09 is not a legal ecma-262 octal constantwarning: -file- is being assigned a //# sourcemappingurl, but already has onewarning: date.prototype.tolocaleformat is deprecatedwarning: javascript 1.6's for-each-in loops are deprecatedwarning: string.x is deprecated; use string.prototype.x insteadwarning: expression closures are deprecatedwarning: unreachable code after return statement ...

Default parameters - JavaScript
function f(x = 1, y) { return [x, y] } f() // [1, undefined] f(2) // [2, undefined] destructured parameter with default value assignment you can use default value assignment with the destructuring assignment notation: function f([x, y] = [1, 2], {z: z} = {z: 3}) { return x + y + z } f() // 6 specifications specification ecmascript (ecma-262)the definition of 'function definitions' in that specification.

Method definitions - JavaScript
const bar = { foo0: function() { return 0 }, foo1() { return 1 }, ['foo' + 2]() { return 2 } } console.log(bar.foo0()) // 0 console.log(bar.foo1()) // 1 console.log(bar.foo2()) // 2 // a global function function foo() { return 1 } let name = 'foo' console.log(window[name]()) // 1 specifications specification ecmascript (ecma-262)the definition of 'method definitions' in that specification.

arguments.callee - JavaScript
se like the following, there are not alternatives to arguments.callee, so its deprecation could be a bug (see bug 725398): function createperson(sidentity) { var operson = new function('alert(arguments.callee.identity);'); operson.identity = sidentity; return operson; } var john = createperson('john smith'); john(); specifications specification ecmascript (ecma-262)the definition of 'arguments exotic objects' in that specification.

arguments.length - JavaScript
*/) { base = number(base); for (var i = 1; i < arguments.length; i++) { base += number(arguments[i]); } return base; } note the difference between function.length and arguments.length specifications specification ecmascript (ecma-262)the definition of 'arguments exotic objects' in that specification.

The arguments object - JavaScript
ts[0] does not also update a console.log(a); } func(10); // 10 and also: function func(a = 55) { a = 99; // updating a does not also update arguments[0] console.log(arguments[0]); } func(10); // 10 and also: // an untracked default parameter function func(a = 55) { console.log(arguments[0]); } func(); // undefined specifications specification ecmascript (ecma-262)the definition of 'arguments exotic objects' in that specification.

getter - JavaScript
new example(); console.log(obj.hello); // "world" console.log(object.getownpropertydescriptor(obj, 'hello')); // undefined console.log( object.getownpropertydescriptor( object.getprototypeof(obj), 'hello' ) ); // { configurable: true, enumerable: false, get: function get hello() { return 'world'; }, set: undefined } specifications specification ecmascript (ecma-262)the definition of 'method definitions' in that specification.

Rest parameters - JavaScript
function sortarguments() { let args = array.from(arguments) let sortedargs = args.sort() return sortedargs } console.log(sortarguments(5, 3, 7, 1)) // 1, 3, 5, 7 specifications specification ecmascript (ecma-262)the definition of 'function definitions' in that specification.

setter - JavaScript
}); o.b = 10; // runs the setter, which assigns 10 / 2 (5) to the 'a' property console.log(o.a) // 5 using a computed property name const expr = 'foo'; const obj = { baz: 'bar', set [expr](v) { this.baz = v; } }; console.log(obj.baz); // "bar" obj.foo = 'baz'; // run the setter console.log(obj.baz); // "baz" specifications specification ecmascript (ecma-262)the definition of 'method definitions' in that specification.

Functions - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'function definitions' in that specification.

Array.prototype[@@iterator]() - JavaScript
t support for..of loop // and let-scoped variables in for loops // const and var could also be used for (let letter of iterator) { console.log(letter); } } // array logiterable(['a', 'b', 'c']); // a // b // c // string logiterable('abc'); // a // b // c logiterable(123); // 123 " is not an iterable object..." specifications specification ecmascript (ecma-262)the definition of 'array.prototype[@@iterator]()' in that specification.

get Array[@@species] - JavaScript
however, you might want to overwrite this, in order to return parent array objects in your derived class methods: class myarray extends array { // overwrite myarray species to the parent array constructor static get [symbol.species]() { return array; } } specifications specification ecmascript (ecma-262)the definition of 'get array [ @@species ]' in that specification.

Array.prototype[@@unscopables] - JavaScript
var keys = []; with (array.prototype) { keys.push('something'); } object.keys(array.prototype[symbol.unscopables]); // ["copywithin", "entries", "fill", "find", "findindex", // "includes", "keys", "values"] specifications specification ecmascript (ecma-262)the definition of 'array.prototype[@@unscopables]' in that specification.

Array() constructor - JavaScript
let fruits = new array('apple', 'banana'); console.log(fruits.length); // 2 console.log(fruits[0]); // "apple" specifications specification ecmascript (ecma-262)the definition of 'array constructor' in that specification.

Array.prototype.concat() - JavaScript
the following code concatenates nested arrays and demonstrates retention of references: const num1 = [[1]]; const num2 = [2, [3]]; const numbers = num1.concat(num2); console.log(numbers); // results in [[1], 2, [3]] // modify the first element of num1 num1[0].push(4); console.log(numbers); // results in [[1, 4], 2, [3]] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.concat' in that specification.

Array.prototype.copyWithin() - JavaScript
5, 3: 1}, 0, 3) // {0: 1, 3: 1, length: 5} // es2015 typed arrays are subclasses of array var i32a = new int32array([1, 2, 3, 4, 5]) i32a.copywithin(0, 2) // int32array [3, 4, 5, 4, 5] // on platforms that are not yet es2015 compliant: [].copywithin.call(new int32array([1, 2, 3, 4, 5]), 0, 3, 4); // int32array [4, 2, 3, 4, 5] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.copywithin' in that specification.

Array.prototype.entries() - JavaScript
ples iterating with index and element const a = ['a', 'b', 'c']; for (const [index, element] of a.entries()) console.log(index, element); // 0 'a' // 1 'b' // 2 'c' using a for…of loop var a = ['a', 'b', 'c']; var iterator = a.entries(); for (let e of iterator) { console.log(e); } // [0, 'a'] // [1, 'b'] // [2, 'c'] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.entries' in that specification.

Array.prototype.fill() - JavaScript
2, 3].fill(4, 3, 5) // [1, 2, 3] array(3).fill(4) // [4, 4, 4] [].fill.call({ length: 3 }, 4) // {0: 4, 1: 4, 2: 4, length: 3} // a single object, referenced by each slot of the array: let arr = array(3).fill({}) // [{}, {}, {}] arr[0].hi = "hi" // [{ hi: "hi" }, { hi: "hi" }, { hi: "hi" }] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.fill' in that specification.

Array.prototype.flat() - JavaScript
5, 6]] const arr3 = [1, 2, [3, 4, [5, 6]]]; arr3.flat(2); // [1, 2, 3, 4, 5, 6] const arr4 = [1, 2, [3, 4, [5, 6, [7, 8, [9, 10]]]]]; arr4.flat(infinity); // [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] flattening and array holes the flat method removes empty slots in arrays: const arr5 = [1, 2, , 4, 5]; arr5.flat(); // [1, 2, 4, 5] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.flat' in that specification.

Array.prototype.flatMap() - JavaScript
[n] : [n-1, 1] ) // expected output: [4, 1, 4, 20, 16, 1, 18] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.flatmap' in that specification.

Array.prototype.forEach() - JavaScript
function flatten(arr) { const result = [] arr.foreach((i) => { if (array.isarray(i)) { result.push(...flatten(i)) } else { result.push(i) } }) return result } // usage const nested = [1, 2, 3, [4, 5, [6, 7], 8, 9]] flatten(nested) // [1, 2, 3, 4, 5, 6, 7, 8, 9] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.foreach' in that specification.

Array.prototype.includes() - JavaScript
for more details and discussion, see https://discourse.mozilla.org/t/mdn-rfc-001-mdn-wiki-pages-shouldnt-be-a-distributor-of-polyfills/24500 specifications specification ecmascript (ecma-262)the definition of 'array.prototype.includes' in that specification.

Array.isArray() - JavaScript
var iframe = document.createelement('iframe'); document.body.appendchild(iframe); xarray = window.frames[window.frames.length-1].array; var arr = new xarray(1,2,3); // [1,2,3] // correctly checking for array array.isarray(arr); // true // considered harmful, because doesn't work through iframes arr instanceof array; // false specifications specification ecmascript (ecma-262)the definition of 'array.isarray' in that specification.

Array.prototype.join() - JavaScript
function f(a, b, c) { var s = array.prototype.join.call(arguments); console.log(s); // '1,a,true' } f(1, 'a', true); //expected output: "1,a,true" specifications specification ecmascript (ecma-262)the definition of 'array.prototype.join' in that specification.

Array.prototype.keys() - JavaScript
examples key iterator doesn't ignore holes var arr = ['a', , 'c']; var sparsekeys = object.keys(arr); var densekeys = [...arr.keys()]; console.log(sparsekeys); // ['0', '2'] console.log(densekeys); // [0, 1, 2] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.keys' in that specification.

Array.prototype.length - JavaScript
var numbers = [1, 2, 3, 4, 5]; if (numbers.length > 3) { numbers.length = 3; } console.log(numbers); // [1, 2, 3] console.log(numbers.length); // 3 create empty array of fixed length var numbers = []; numbers.length = 3; console.log(numbers); // [undefined, undefined, undefined] specifications specification ecmascript (ecma-262)the definition of 'array.length' in that specification.

Array.of() - JavaScript
array.of = function() { return array.prototype.slice.call(arguments); // or let vals = []; for(let prop in arguments){ vals.push(arguments[prop]); } return vals; } } examples using array.of array.of(1); // [1] array.of(1, 2, 3); // [1, 2, 3] array.of(undefined); // [undefined] specifications specification ecmascript (ecma-262)the definition of 'array.of' in that specification.

Array.prototype.pop() - JavaScript
var myfish = {0:'angel', 1:'clown', 2:'mandarin', 3:'sturgeon', length: 4}; var popped = array.prototype.pop.call(myfish); //same syntax for using apply( ) console.log(myfish); // {0:'angel', 1:'clown', 2:'mandarin', length: 3} console.log(popped); // 'sturgeon' specifications specification ecmascript (ecma-262)the definition of 'array.prototype.pop' in that specification.

Array.prototype.push() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'array.prototype.push' in that specification.

Array.prototype.reverse() - JavaScript
const a = {0: 1, 1: 2, 2: 3, length: 3}; console.log(a); // {0: 1, 1: 2, 2: 3, length: 3} array.prototype.reverse.call(a); //same syntax for using apply() console.log(a); // {0: 3, 1: 2, 2: 1, length: 3} specifications specification ecmascript (ecma-262)the definition of 'array.prototype.reverse' in that specification.

Array.prototype.shift() - JavaScript
in the following example every iteration will remove the next element from an array, until it is empty: var names = ["andrew", "edward", "paul", "chris" ,"john"]; while( (i = names.shift()) !== undefined ) { console.log(i); } // andrew, edward, paul, chris, john specifications specification ecmascript (ecma-262)the definition of 'array.prototype.shift' in that specification.

Array.prototype.slice() - JavaScript
let unboundslice = array.prototype.slice let slice = function.prototype.call.bind(unboundslice) function list() { return slice(arguments) } let list1 = list(1, 2, 3) // [1, 2, 3] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.slice' in that specification.

Array.prototype.sort() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'array.prototype.sort' in that specification.

Array.prototype.splice() - JavaScript
n', 'mandarin', 'sturgeon'] let removed = myfish.splice(-2, 1) // myfish is ["angel", "clown", "sturgeon"] // removed is ["mandarin"] remove all elements from index 2 let myfish = ['angel', 'clown', 'mandarin', 'sturgeon'] let removed = myfish.splice(2) // myfish is ["angel", "clown"] // removed is ["mandarin", "sturgeon"] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.splice' in that specification.

Array.prototype.toLocaleString() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'array.prototype.tolocalestring' in that specification.

Array.prototype.toString() - JavaScript
examples using tostring const array1 = [1, 2, 'a', '1a']; console.log(array1.tostring()); // expected output: "1,2,a,1a" specifications specification ecmascript (ecma-262)the definition of 'array.prototype.tostring' in that specification.

Array.prototype.unshift() - JavaScript
array length // arr is [0, 1, 2] arr.unshift(-2, -1) // the new array length is 5 // arr is [-2, -1, 0, 1, 2] arr.unshift([-4, -3]) // the new array length is 6 // arr is [[-4, -3], -2, -1, 0, 1, 2] arr.unshift([-7, -6], [-5]) // the new array length is 8 // arr is [ [-7, -6], [-5], [-4, -3], -2, -1, 0, 1, 2 ] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.unshift' in that specification.

Array.prototype.values() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'array.prototype.values' in that specification.

Array - JavaScript
r,n,b,q,k,b,n,r p,p,p,p,p,p,p,p , , , , , , , , , , , , , , , , , ,p, , , , , , , , , , p,p,p,p, ,p,p,p r,n,b,q,k,b,n,r using an array to tabulate a set of values values = [] for (let x = 0; x < 10; x++){ values.push([ 2 ** x, 2 * x ** 2 ]) } console.table(values) results in // the first column is the index 0 1 0 1 2 2 2 4 8 3 8 18 4 16 32 5 32 50 6 64 72 7 128 98 8 256 128 9 512 162 specifications specification initial publication ecmascript (ecma-262)the definition of 'array' in that specification.

get ArrayBuffer[@@species] - JavaScript
however, you might want to overwrite this, in order to return parent arraybuffer objects in your derived class methods: class myarraybuffer extends arraybuffer { // overwrite myarraybuffer species to the parent arraybuffer constructor static get [symbol.species]() { return arraybuffer; } } specifications specification ecmascript (ecma-262)the definition of 'get arraybuffer [ @@species ]' in that specification.

ArrayBuffer() constructor - JavaScript
= arraybuffer(10); // typeerror: calling a builtin arraybuffer constructor // without new is forbidden var dv = new arraybuffer(10); examples creating an arraybuffer in this example, we create a 8-byte buffer with a int32array view referring to the buffer: var buffer = new arraybuffer(8); var view = new int32array(buffer); specifications specification ecmascript (ecma-262)the definition of 'arraybuffer' in that specification.

ArrayBuffer.prototype.byteLength - JavaScript
examples using bytelength var buffer = new arraybuffer(8); buffer.bytelength; // 8 specifications specification ecmascript (ecma-262)the definition of 'arraybuffer.prototype.bytelength' in that specification.

ArrayBuffer.isView() - JavaScript
// false arraybuffer.isview(new arraybuffer(10)); // false arraybuffer.isview(new uint8array()); // true arraybuffer.isview(new float32array()); // true arraybuffer.isview(new int8array(10).subarray(0, 3)); // true const buffer = new arraybuffer(2); const dv = new dataview(buffer); arraybuffer.isview(dv); // true specifications specification ecmascript (ecma-262)the definition of 'arraybuffer.isview' in that specification.

ArrayBuffer.prototype.slice() - JavaScript
examples copying an arraybuffer const buf1 = new arraybuffer(8); const buf2 = buf1.slice(0); specifications specification ecmascript (ecma-262)the definition of 'arraybuffer.prototype.slice' in that specification.

ArrayBuffer - JavaScript
examples creating an arraybuffer in this example, we create a 8-byte buffer with a int32array view referring to the buffer: const buffer = new arraybuffer(8); const view = new int32array(buffer); specifications specification ecmascript (ecma-262)the definition of 'arraybuffer' in that specification.

AsyncFunction - JavaScript
2000); }); } let asyncfunction = object.getprototypeof(async function(){}).constructor let a = new asyncfunction('a', 'b', 'return await resolveafter2seconds(a) + await resolveafter2seconds(b);'); a(10, 20).then(v => { console.log(v); // prints 30 after 4 seconds }); specifications specification ecmascript (ecma-262)the definition of 'asyncfunction object' in that specification.

Atomics.add() - JavaScript
examples using add() const sab = new sharedarraybuffer(1024); const ta = new uint8array(sab); atomics.add(ta, 0, 12); // returns 0, the old value atomics.load(ta, 0); // 12 specifications specification ecmascript (ecma-262)the definition of 'atomics.add' in that specification.

Atomics.and() - JavaScript
5 0101 1 0001 ---- 1 0001 examples using and() const sab = new sharedarraybuffer(1024); const ta = new uint8array(sab); ta[0] = 5; atomics.and(ta, 0, 1); // returns 0, the old value atomics.load(ta, 0); // 1 specifications specification ecmascript (ecma-262)the definition of 'atomics.and' in that specification.

Atomics.compareExchange() - JavaScript
examples using compareexchange() const sab = new sharedarraybuffer(1024); const ta = new uint8array(sab); ta[0] = 7; atomics.compareexchange(ta, 0, 7, 12); // returns 7, the old value atomics.load(ta, 0); // 12 specifications specification ecmascript (ecma-262)the definition of 'atomics.compareexchange' in that specification.

Atomics.exchange() - JavaScript
examples using exchange() const sab = new sharedarraybuffer(1024); const ta = new uint8array(sab); atomics.exchange(ta, 0, 12); // returns 0, the old value atomics.load(ta, 0); // 12 specifications specification ecmascript (ecma-262)the definition of 'atomics.exchange' in that specification.

Atomics.isLockFree() - JavaScript
examples using islockfree atomics.islockfree(1); // true atomics.islockfree(2); // true atomics.islockfree(3); // false atomics.islockfree(4); // true atomics.islockfree(5); // false atomics.islockfree(6); // false atomics.islockfree(7); // false atomics.islockfree(8); // true specifications specification ecmascript (ecma-262)the definition of 'atomics.islockfree' in that specification.

Atomics.load() - JavaScript
examples using load const sab = new sharedarraybuffer(1024); const ta = new uint8array(sab); atomics.add(ta, 0, 12); atomics.load(ta, 0); // 12 specifications specification ecmascript (ecma-262)the definition of 'atomics.load' in that specification.

Atomics.notify() - JavaScript
atomics.wait(int32, 0, 0); console.log(int32[0]); // 123 a writing thread stores a new value and notifies the waiting thread once it has written: console.log(int32[0]); // 0; atomics.store(int32, 0, 123); atomics.notify(int32, 0, 1); specifications specification ecmascript (ecma-262)the definition of 'atomics.notify' in that specification.

Atomics.or() - JavaScript
5 0101 1 0001 ---- 5 0101 examples using or const sab = new sharedarraybuffer(1024); const ta = new uint8array(sab); ta[0] = 2; atomics.or(ta, 0, 1); // returns 2, the old value atomics.load(ta, 0); // 3 specifications specification ecmascript (ecma-262)the definition of 'atomics.or' in that specification.

Atomics.store() - JavaScript
examples using store() var sab = new sharedarraybuffer(1024); var ta = new uint8array(sab); atomics.store(ta, 0, 12); // 12 specifications specification ecmascript (ecma-262)the definition of 'atomics.store' in that specification.

Atomics.sub() - JavaScript
examples using sub const sab = new sharedarraybuffer(1024); const ta = new uint8array(sab); ta[0] = 48; atomics.sub(ta, 0, 12); // returns 48, the old value atomics.load(ta, 0); // 36 specifications specification ecmascript (ecma-262)the definition of 'atomics.sub' in that specification.

Atomics.wait() - JavaScript
atomics.wait(int32, 0, 0); console.log(int32[0]); // 123 a writing thread stores a new value and notifies the waiting thread once it has written: console.log(int32[0]); // 0; atomics.store(int32, 0, 123); atomics.notify(int32, 0, 1); specifications specification ecmascript (ecma-262)the definition of 'atomics.wait' in that specification.

Atomics.xor() - JavaScript
5 0101 1 0001 ---- 4 0100 examples using xor const sab = new sharedarraybuffer(1024); const ta = new uint8array(sab); ta[0] = 5; atomics.xor(ta, 0, 1); // returns 5, the old value atomics.load(ta, 0); // 4 specifications specification ecmascript (ecma-262)the definition of 'atomics.xor' in that specification.

Atomics - JavaScript
atomics.wait(int32, 0, 0); console.log(int32[0]); // 123 a writing thread stores a new value and notifies the waiting thread once it has written: console.log(int32[0]); // 0; atomics.store(int32, 0, 123); atomics.notify(int32, 0, 1); specifications specification ecmascript (ecma-262)the definition of 'atomics' in that specification.

BigInt() constructor - JavaScript
examples creating a new bigint bigint(123); // 123n specifications specification ecmascript (ecma-262)the definition of 'bigint constructor' in that specification.

BigInt.asIntN() - JavaScript
const max = 2n ** (64n - 1n) - 1n; bigint.asintn(64, max); // ↪ 9223372036854775807n bigint.asintn(64, max + 1n); // ↪ -9223372036854775807n // negative because of overflow specifications specification ecmascript (ecma-262)the definition of 'bigint.asintn()' in that specification.

BigInt.asUintN() - JavaScript
const max = 2n ** 64n - 1n; bigint.asuintn(64, max); // ↪ 18446744073709551615n bigint.asuintn(64, max + 1n); // ↪ 0n // zero because of overflow specifications specification ecmascript (ecma-262)the definition of 'bigint.asuintn()' in that specification.

BigInt.prototype.toLocaleString() - JavaScript
3.456.789,00 € // the japanese yen doesn't use a minor unit console.log(bigint.tolocalestring('ja-jp', { style: 'currency', currency: 'jpy' })) // → ￥123,456,789,123,456,789 // limit to three significant digits console.log(bigint.tolocalestring('en-in', { maximumsignificantdigits: 3 })); // → 1,23,00,00,00,00,00,00,000 specifications specification ecmascript (ecma-262)the definition of 'bigint.prototype.tolocalestring()' in that specification.

BigInt.prototype.toString() - JavaScript
(-0n).tostring(); // '0' bigint(-0).tostring(); // '0' specifications specification ecmascript (ecma-262)the definition of 'bigint.prototype.tostring()' in that specification.

BigInt.prototype.valueOf() - JavaScript
examples using valueof typeof object(1n); // object typeof object(1n).valueof(); // bigint specifications specification ecmascript (ecma-262)the definition of 'bigint.prototype.valueof()' in that specification.

BigInt - JavaScript
eturn false; } return true } // takes a bigint as an argument, returns nth prime number as bigint function nthprime(nth) { let maybeprime = 2n let prime = 0n while (nth >= 0n) { if (isprime(maybeprime)) { nth-- prime = maybeprime } maybeprime++ } return prime } nthprime(20n) // ↪ 73n specifications specification ecmascript (ecma-262)the definition of 'bigint objects' in that specification.

BigInt64Array() constructor - JavaScript
gint64array([21n, 31n]); var y = new bigint64array(x); console.log(y[0]); // 21n // from an arraybuffer var buffer = new arraybuffer(32); var z = new bigint64array(buffer, 0, 4); // from an iterable var iterable = function*(){ yield* [1n, 2n, 3n]; }(); var bigint64 = new bigint64array(iterable); // bigint64array[1n, 2n, 3n] specifications specification ecmascript (ecma-262)the definition of 'bigint64array' in that specification.

BigInt64Array - JavaScript
gint64array([21n, 31n]); var y = new bigint64array(x); console.log(y[0]); // 21n // from an arraybuffer var buffer = new arraybuffer(32); var z = new bigint64array(buffer, 0, 4); // from an iterable var iterable = function*(){ yield* [1n, 2n, 3n]; }(); var bigint64 = new bigint64array(iterable); // bigint64array[1n, 2n, 3n] specifications specification ecmascript (ecma-262)the definition of 'bigint64array' in that specification.

BigUint64Array() constructor - JavaScript
4array([21n, 31n]); var y = new biguint64array(x); console.log(y[0]); // 21n // from an arraybuffer var buffer = new arraybuffer(32); var z = new biguint64array(buffer, 0, 4); // from an iterable var iterable = function*(){ yield* [1n, 2n, 3n]; }(); var biguint64 = new biguint64array(iterable); // biguint64array[1n, 2n, 3n] specifications specification ecmascript (ecma-262)the definition of 'biguint64array' in that specification.

BigUint64Array - JavaScript
4array([21n, 31n]); var y = new biguint64array(x); console.log(y[0]); // 21n // from an arraybuffer var buffer = new arraybuffer(32); var z = new biguint64array(buffer, 0, 4); // from an iterable var iterable = function*(){ yield* [1n, 2n, 3n]; }(); var biguint64 = new biguint64array(iterable); // biguint64array[1n, 2n, 3n] specifications specification ecmascript (ecma-262)the definition of 'biguint64array' in that specification.

Boolean() constructor - JavaScript
ystring = new boolean(''); var bfalse = new boolean(false); creating boolean objects with an initial value of true var btrue = new boolean(true); var btruestring = new boolean('true'); var bfalsestring = new boolean('false'); var bsulin = new boolean('su lin'); var barrayproto = new boolean([]); var bobjproto = new boolean({}); specifications specification ecmascript (ecma-262)the definition of 'boolean constructor' in that specification.

Boolean.prototype.toString() - JavaScript
examples using tostring() in the following code, flag.tostring() returns "true": var flag = new boolean(true); var myvar = flag.tostring(); specifications specification ecmascript (ecma-262)the definition of 'boolean.prototype.tostring' in that specification.

Boolean.prototype.valueOf() - JavaScript
examples using valueof() x = new boolean(); myvar = x.valueof(); // assigns false to myvar specifications specification ecmascript (ecma-262)the definition of 'boolean.prototype.valueof' in that specification.

Boolean - JavaScript
ng = new boolean(''); var bfalse = new boolean(false); creating boolean objects with an initial value of true var btrue = new boolean(true); var btruestring = new boolean('true'); var bfalsestring = new boolean('false'); var bsulin = new boolean('su lin'); var barrayproto = new boolean([]); var bobjproto = new boolean({}); specifications specification ecmascript (ecma-262)the definition of 'boolean' in that specification.

DataView() constructor - JavaScript
examples using dataview var buffer = new arraybuffer(16); var view = new dataview(buffer, 0); view.setint16(1, 42); view.getint16(1); // 42 specifications specification ecmascript (ecma-262)the definition of 'dataview constructor' in that specification.

DataView.prototype.buffer - JavaScript
examples using the buffer property var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.buffer; // arraybuffer { bytelength: 8 } specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.buffer' in that specification.

DataView.prototype.byteLength - JavaScript
ataview = new dataview(buffer); dataview.bytelength; // 8 (matches the bytelength of the buffer) var dataview2 = new dataview(buffer, 1, 5); dataview2.bytelength; // 5 (as specified when constructing the dataview) var dataview3 = new dataview(buffer, 2); dataview3.bytelength; // 6 (due to the offset of the constructed dataview) specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.bytelength' in that specification.

DataView.prototype.byteOffset - JavaScript
examples using the byteoffset property var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.byteoffset; // 0 (no offset specified) var dataview2 = new dataview(buffer, 3); dataview2.byteoffset; // 3 (as specified when constructing the dataview) specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.byteoffset' in that specification.

DataView.prototype.getBigInt64() - JavaScript
examples using the getbigint64 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.getbigint64(0); // 0n specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.getbigint64()' in that specification.

DataView.prototype.getBigUint64() - JavaScript
examples using the getbiguint64 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.getbiguint64(0); // 0n specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.getbiguint64()' in that specification.

DataView.prototype.getFloat32() - JavaScript
examples using the getfloat32 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.getfloat32(1); // 0 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.getfloat32' in that specification.

DataView.prototype.getFloat64() - JavaScript
examples using the getfloat64 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.getfloat64(0); // 0 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.getfloat64' in that specification.

DataView.prototype.getInt16() - JavaScript
examples using the getint16 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.getint16(1); // 0 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.getint16' in that specification.

DataView.prototype.getInt32() - JavaScript
examples using the getint32 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.getint32(1); // 0 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.getint32' in that specification.

DataView.prototype.getInt8() - JavaScript
examples using the getint8 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.getint8(1); // 0 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.getint8' in that specification.

DataView.prototype.getUint16() - JavaScript
examples using the getuint16 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.getuint16(1); // 0 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.getuint16' in that specification.

DataView.prototype.getUint32() - JavaScript
examples using the getuint32 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.getuint32(1); // 0 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.getuint32' in that specification.

DataView.prototype.getUint8() - JavaScript
examples using the getuint8 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.getuint8(1); // 0 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.getuint8' in that specification.

DataView.prototype.setBigInt64() - JavaScript
examples using the setbigint64 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.setbigint64(0, 3n); dataview.getbigint64(0); // 3n specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.setbigint64()' in that specification.

DataView.prototype.setBigUint64() - JavaScript
examples using the setbiguint64 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.setbiguint64(0, 3n); dataview.getbiguint64(0); // 3n specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.setbiguint64()' in that specification.

DataView.prototype.setFloat32() - JavaScript
examples using the setfloat32 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.setfloat32(1, 3); dataview.getfloat32(1); // 3 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.setfloat32' in that specification.

DataView.prototype.setFloat64() - JavaScript
examples using the setfloat64 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.setfloat64(0, 3); dataview.getfloat64(0); // 3 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.setfloat64' in that specification.

DataView.prototype.setInt16() - JavaScript
examples using the setint16 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.setint16(1, 3); dataview.getint16(1); // 3 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.setint16' in that specification.

DataView.prototype.setInt32() - JavaScript
examples using the setint32 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.setint32(1, 3); dataview.getint32(1); // 3 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.setint32' in that specification.

DataView.prototype.setInt8() - JavaScript
examples using the setint8 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.setint8(1, 3); dataview.getint8(1); // 3 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.setint8' in that specification.

DataView.prototype.setUint16() - JavaScript
examples using the setuint16 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.setuint16(1, 3); dataview.getuint16(1); // 3 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.setuint16' in that specification.

DataView.prototype.setUint32() - JavaScript
examples using the setuint32 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.setuint32(1, 3); dataview.getuint32(1); // 3 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.setuint32' in that specification.

DataView.prototype.setUint8() - JavaScript
examples using the setuint8 method var buffer = new arraybuffer(8); var dataview = new dataview(buffer); dataview.setuint8(1, 3); dataview.getuint8(1); // 3 specifications specification ecmascript (ecma-262)the definition of 'dataview.prototype.setuint8' in that specification.

DataView - JavaScript
examples using dataview var buffer = new arraybuffer(16); var view = new dataview(buffer, 0); view.setint16(1, 42); view.getint16(1); // 42 specifications specification ecmascript (ecma-262)the definition of 'dataview' in that specification.

Date.prototype[@@toPrimitive] - JavaScript
7 gmt+0100 (british summer time)" testdate[symbol.toprimitive]('string'); // returns "date fri may 29 2020 14:05:17 gmt+0100 (british summer time)" testdate[symbol.toprimitive]('number'); // returns "1590757517834" testdate[symbol.toprimitive]('default'); // returns "date fri may 29 2020 14:05:17 gmt+0100 (british summer time)" specifications specification ecmascript (ecma-262)the definition of 'date.prototype.@@toprimitive' in that specification.

Date() constructor - JavaScript
let today = new date() let birthday = new date('december 17, 1995 03:24:00') let birthday = new date('1995-12-17t03:24:00') let birthday = new date(1995, 11, 17) // the month is 0-indexed let birthday = new date(1995, 11, 17, 3, 24, 0) specifications specification ecmascript (ecma-262)the definition of 'date' in that specification.

Date.UTC() - JavaScript
examples using date.utc() the following statement creates a date object with the arguments treated as utc instead of local: let utcdate = new date(date.utc(2018, 11, 1, 0, 0, 0)); specifications specification ecmascript (ecma-262)the definition of 'date.utc' in that specification.

Date.prototype.getDate() - JavaScript
var xmas95 = new date('december 25, 1995 23:15:30'); var day = xmas95.getdate(); console.log(day); // 25 specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getdate' in that specification.

Date.prototype.getDay() - JavaScript
using this method, the internationalization is made easier: var options = { weekday: 'long'}; console.log(new intl.datetimeformat('en-us', options).format(xmas95)); // monday console.log(new intl.datetimeformat('de-de', options).format(xmas95)); // montag specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getday' in that specification.

Date.prototype.getFullYear() - JavaScript
var today = new date(); var year = today.getfullyear(); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getfullyear' in that specification.

Date.prototype.getHours() - JavaScript
let xmas95 = new date('december 25, 1995 23:15:30'); let hours = xmas95.gethours(); console.log(hours); // 23 specifications specification ecmascript (ecma-262)the definition of 'date.prototype.gethours' in that specification.

Date.prototype.getMilliseconds() - JavaScript
examples using getmilliseconds() the following example assigns the milliseconds portion of the current time to the variable milliseconds: var today = new date(); var milliseconds = today.getmilliseconds(); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getmilliseconds' in that specification.

Date.prototype.getMinutes() - JavaScript
var xmas95 = new date('december 25, 1995 23:15:30'); var minutes = xmas95.getminutes(); console.log(minutes); // 15 specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getminutes' in that specification.

Date.prototype.getMonth() - JavaScript
using this method, internationalization is made easier: var options = { month: 'long'}; console.log(new intl.datetimeformat('en-us', options).format(xmas95)); // december console.log(new intl.datetimeformat('de-de', options).format(xmas95)); // dezember specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getmonth' in that specification.

Date.prototype.getSeconds() - JavaScript
var xmas95 = new date('december 25, 1995 23:15:30'); var seconds = xmas95.getseconds(); console.log(seconds); // 30 specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getseconds' in that specification.

Date.prototype.getTimezoneOffset() - JavaScript
nttimezoneoffsetinhours = x.gettimezoneoffset() / 60; // 1 // get timezone offset for international labour day (may 1) in 2016 // be careful, the date() constructor uses 0-indexed months, so may is // represented with 4 (and not 5) let labourday = new date(2016, 4, 1) let labourdayoffset = labourday.gettimezoneoffset() / 60; specifications specification ecmascript (ecma-262)the definition of 'date.prototype.gettimezoneoffset' in that specification.

Date.prototype.getUTCDate() - JavaScript
var today = new date(); var day = today.getutcdate(); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getutcdate' in that specification.

Date.prototype.getUTCDay() - JavaScript
var today = new date(); var weekday = today.getutcday(); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getutcday' in that specification.

Date.prototype.getUTCFullYear() - JavaScript
var today = new date(); var year = today.getutcfullyear(); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getutcfullyear' in that specification.

Date.prototype.getUTCHours() - JavaScript
var today = new date(); var hours = today.getutchours(); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getutchours' in that specification.

Date.prototype.getUTCMilliseconds() - JavaScript
var today = new date(); var milliseconds = today.getutcmilliseconds(); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getutcmilliseconds' in that specification.

Date.prototype.getUTCMinutes() - JavaScript
var today = new date(); var minutes = today.getutcminutes(); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getutcminutes' in that specification.

Date.prototype.getUTCMonth() - JavaScript
var today = new date(); var month = today.getutcmonth(); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getutcmonth' in that specification.

Date.prototype.getUTCSeconds() - JavaScript
var today = new date(); var seconds = today.getutcseconds(); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getutcseconds' in that specification.

Date.prototype.getYear() - JavaScript
var xmas = new date('december 25, 2015 23:15:00'); xmas.setyear(95); var year = xmas.getyear(); // returns 95 specifications specification ecmascript (ecma-262)the definition of 'date.prototype.getyear' in that specification.

Date.prototype.setFullYear() - JavaScript
examples using setfullyear() var thebigday = new date(); thebigday.setfullyear(1997); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.setfullyear' in that specification.

Date.prototype.setHours() - JavaScript
examples using sethours() var thebigday = new date(); thebigday.sethours(7); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.sethours' in that specification.

Date.prototype.setMilliseconds() - JavaScript
examples using setmilliseconds() var thebigday = new date(); thebigday.setmilliseconds(100); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.setmilliseconds' in that specification.

Date.prototype.setMinutes() - JavaScript
examples using setminutes() var thebigday = new date(); thebigday.setminutes(45); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.setminutes' in that specification.

Date.prototype.setMonth() - JavaScript
examples using setmonth() var thebigday = new date(); thebigday.setmonth(6); //watch out for end of month transitions var endofmonth = new date(2016, 7, 31); endofmonth.setmonth(1); console.log(endofmonth); //wed mar 02 2016 00:00:00 specifications specification ecmascript (ecma-262)the definition of 'date.prototype.setmonth' in that specification.

Date.prototype.setSeconds() - JavaScript
examples using setseconds() var thebigday = new date(); thebigday.setseconds(30); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.setseconds' in that specification.

Date.prototype.setTime() - JavaScript
examples using settime() var thebigday = new date('july 1, 1999'); var sameasbigday = new date(); sameasbigday.settime(thebigday.gettime()); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.settime' in that specification.

Date.prototype.setUTCDate() - JavaScript
examples using setutcdate() var thebigday = new date(); thebigday.setutcdate(20); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.setutcdate' in that specification.

Date.prototype.setUTCFullYear() - JavaScript
examples using setutcfullyear() var thebigday = new date(); thebigday.setutcfullyear(1997); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.setutcfullyear' in that specification.

Date.prototype.setUTCHours() - JavaScript
examples using setutchours() var thebigday = new date(); thebigday.setutchours(8); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.setutchours' in that specification.

Date.prototype.setUTCMilliseconds() - JavaScript
examples using setutcmilliseconds() var thebigday = new date(); thebigday.setutcmilliseconds(500); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.setutcmilliseconds' in that specification.

Date.prototype.setUTCMinutes() - JavaScript
examples using setutcminutes() var thebigday = new date(); thebigday.setutcminutes(43); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.setutcminutes' in that specification.

Date.prototype.setUTCMonth() - JavaScript
examples using setutcmonth() var thebigday = new date(); thebigday.setutcmonth(11); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.setutcmonth' in that specification.

Date.prototype.setUTCSeconds() - JavaScript
examples using setutcseconds() var thebigday = new date(); thebigday.setutcseconds(20); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.setutcseconds' in that specification.

Date.prototype.setYear() - JavaScript
var thebigday = new date(); thebigday.setyear(96); thebigday.setyear(1996); thebigday.setyear(2000); specifications specification ecmascript (ecma-262)the definition of 'date.prototype.setyear' in that specification.

Date.prototype.toGMTString() - JavaScript
use toutcstring() console.log(str); // mon, 18 dec 1995 17:28:35 gmt specifications specification ecmascript (ecma-262)the definition of 'date.prototype.togmtstring' in that specification.

Date.prototype.toJSON() - JavaScript
examples using tojson() var jsondate = (new date()).tojson(); var backtodate = new date(jsondate); console.log(jsondate); //2015-10-26t07:46:36.611z specifications specification ecmascript (ecma-262)the definition of 'date.prototype.tojson' in that specification.

Date.prototype.toLocaleDateString() - JavaScript
dezember 2012" // an application may want to use utc and make that visible options.timezone = 'utc'; options.timezonename = 'short'; console.log(date.tolocaledatestring('en-us', options)); // → "thursday, december 20, 2012, gmt" specifications specification ecmascript (ecma-262)the definition of 'date.prototype.tolocaledatestring' in that specification.

Date.prototype.toLocaleString() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'date.prototype.tolocalestring' in that specification.

Date.prototype.toLocaleTimeString() - JavaScript
00 am gmt" // sometimes even the us needs 24-hour time console.log(date.tolocaletimestring('en-us', { hour12: false })); // → "19:00:00" // show only hours and minutes, use options with the default locale - use an empty array console.log(date.tolocaletimestring([], { hour: '2-digit', minute: '2-digit' })); // → "20:01" specifications specification ecmascript (ecma-262)the definition of 'date.prototype.tolocaletimestring' in that specification.

Date.prototype.valueOf() - JavaScript
examples using valueof() var x = new date(56, 6, 17); var myvar = x.valueof(); // assigns -424713600000 to myvar specifications specification ecmascript (ecma-262)the definition of 'date.prototype.valueof' in that specification.

Error() constructor - JavaScript
const y = new error('i was constructed via the "new" keyword!') specifications specification ecmascript (ecma-262)the definition of 'error constructor' in that specification.

Error.prototype.message - JavaScript
examples throwing a custom error var e = new error('could not parse input'); // e.message is 'could not parse input' throw e; specifications specification ecmascript (ecma-262)the definition of 'error.prototype.message' in that specification.

Error.prototype.name - JavaScript
examples throwing a custom error var e = new error('malformed input'); // e.name is 'error' e.name = 'parseerror'; throw e; // e.tostring() would return 'parseerror: malformed input' specifications specification ecmascript (ecma-262)the definition of 'error.prototype.name' in that specification.

Error.prototype.toString() - JavaScript
ar e = new error('fatal error'); console.log(e.tostring()); // 'error: fatal error' e.name = undefined; console.log(e.tostring()); // 'error: fatal error' e.name = ''; console.log(e.tostring()); // 'fatal error' e.message = undefined; console.log(e.tostring()); // '' e.name = 'hello'; console.log(e.tostring()); // 'hello' specifications specification ecmascript (ecma-262)the definition of 'error.prototype.tostring' in that specification.

Error - JavaScript
e, configurable: true } }); if (object.setprototypeof){ object.setprototypeof(customerror, error); } else { customerror.__proto__ = error; } try { throw new customerror('baz', 'bazmessage'); } catch(e){ console.error(e.name); //customerror console.error(e.foo); //baz console.error(e.message); //bazmessage } specifications specification ecmascript (ecma-262)the definition of 'error' in that specification.

EvalError() constructor - JavaScript
lerror); // true console.log(e.message); // "hello" console.log(e.name); // "evalerror" console.log(e.filename); // "somefile.js" console.log(e.linenumber); // 10 console.log(e.columnnumber); // 0 console.log(e.stack); // "@scratchpad/2:2:9\n" } specifications specification ecmascript (ecma-262)the definition of 'nativeerror constructor' in that specification.

Float32Array() constructor - JavaScript
ay var x = new float32array([21, 31]); var y = new float32array(x); console.log(y[0]); // 21 // from an arraybuffer var buffer = new arraybuffer(16); var z = new float32array(buffer, 0, 4); // from an iterable var iterable = function*(){ yield* [1,2,3]; }(); var float32 = new float32array(iterable); // float32array[1, 2, 3] specifications specification ecmascript (ecma-262)the definition of 'typedarray constructors' in that specification.

Float32Array - JavaScript
darray var x = new float32array([21, 31]); var y = new float32array(x); console.log(y[0]); // 21 // from an arraybuffer var buffer = new arraybuffer(16); var z = new float32array(buffer, 0, 4); // from an iterable var iterable = function*(){ yield* [1,2,3]; }(); var float32 = new float32array(iterable); // float32array[1, 2, 3] specifications specification ecmascript (ecma-262)the definition of 'typedarray constructors' in that specification.

Float64Array() constructor - JavaScript
ay var x = new float64array([21, 31]); var y = new float64array(x); console.log(y[0]); // 21 // from an arraybuffer var buffer = new arraybuffer(32); var z = new float64array(buffer, 0, 4); // from an iterable var iterable = function*(){ yield* [1,2,3]; }(); var float64 = new float64array(iterable); // float64array[1, 2, 3] specifications specification ecmascript (ecma-262)the definition of 'typedarray constructors' in that specification.

Float64Array - JavaScript
darray var x = new float64array([21, 31]); var y = new float64array(x); console.log(y[0]); // 21 // from an arraybuffer var buffer = new arraybuffer(32); var z = new float64array(buffer, 0, 4); // from an iterable var iterable = function*(){ yield* [1,2,3]; }(); var float64 = new float64array(iterable); // float64array[1, 2, 3] specifications specification ecmascript (ecma-262)the definition of 'typedarray constructors' in that specification.

Function() constructor - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'function constructor' in that specification.

Function.prototype.apply() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'function.prototype.apply' in that specification.

Function.prototype.call() - JavaScript
'use strict'; var sdata = 'wisen'; function display() { console.log('sdata value is %s ', this.sdata); } display.call(); // cannot read the property of 'sdata' of undefined specifications specification ecmascript (ecma-262)the definition of 'function.prototype.call' in that specification.

Function.length - JavaScript
*/ console.log((function(...args) {}).length); // 0, rest parameter is not counted console.log((function(a, b = 1, c) {}).length); // 1, only parameters before the first one with // a default value is counted specifications specification ecmascript (ecma-262)the definition of 'function.length' in that specification.

Function.name - JavaScript
let sym1 = symbol("foo"); let sym2 = symbol(); let o = { [sym1]: function(){}, [sym2]: function(){} }; o[sym1].name; // "[foo]" o[sym2].name; // "" specifications specification ecmascript (ecma-262)the definition of 'name' in that specification.

Function.prototype.toString() - JavaScript
set a(x){} }, "a").set "set a(x){}" function.prototype.tostring "function tostring() { [native code] }" (function f(){}.bind(0)) "function () { [native code] }" function("a", "b") "function anonymous(a\n) {\nb\n}" specifications specification ecmascript (ecma-262)the definition of 'function.prototype.tostring' in that specification.

Function - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'function' in that specification.

Generator.prototype.next() - JavaScript
function* gen() { while (true) { let value = yield null; console.log(value); } } const g = gen(); g.next(1); // "{ value: null, done: false }" g.next(2); // 2 // "{ value: null, done: false }" specifications specification ecmascript (ecma-262)the definition of 'generator.prototype.next' in that specification.

Generator.prototype.return() - JavaScript
function* gen() { yield 1; yield 2; yield 3; } const g = gen(); g.next(); // { value: 1, done: false } g.next(); // { value: 2, done: false } g.next(); // { value: 3, done: false } g.next(); // { value: undefined, done: true } g.return(); // { value: undefined, done: true } g.return(1); // { value: 1, done: true } specifications specification ecmascript (ecma-262)the definition of 'generator.prototype.return' in that specification.

Generator.prototype.throw() - JavaScript
function* gen() { while(true) { try { yield 42; } catch(e) { console.log('error caught!'); } } } const g = gen(); g.next(); // { value: 42, done: false } g.throw(new error('something went wrong')); // "error caught!" // { value: 42, done: false } specifications specification ecmascript (ecma-262)the definition of 'generator.prototype.throw' in that specification.

Generator - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'generator objects' in that specification.

GeneratorFunction - JavaScript
examples creating a generator function from a generatorfunction() constructor var generatorfunction = object.getprototypeof(function*(){}).constructor var g = new generatorfunction('a', 'yield a * 2'); var iterator = g(10); console.log(iterator.next().value); // 20 specifications specification ecmascript (ecma-262)the definition of 'generatorfunction' in that specification.

Infinity - JavaScript
examples using infinity console.log(infinity ); /* infinity */ console.log(infinity + 1 ); /* infinity */ console.log(math.pow(10, 1000)); /* infinity */ console.log(math.log(0) ); /* -infinity */ console.log(1 / infinity ); /* 0 */ console.log(1 / 0 ); /* infinity */ specifications specification ecmascript (ecma-262)the definition of 'infinity' in that specification.

Int16Array() constructor - JavaScript
another typedarray var x = new int16array([21, 31]); var y = new int16array(x); console.log(y[0]); // 21 // from an arraybuffer var buffer = new arraybuffer(8); var z = new int16array(buffer, 0, 4); // from an iterable var iterable = function*(){ yield* [1,2,3]; }(); var int16 = new int16array(iterable); // int16array[1, 2, 3] specifications specification ecmascript (ecma-262)the definition of 'typedarray constructors' in that specification.

Int16Array - JavaScript
another typedarray var x = new int16array([21, 31]); var y = new int16array(x); console.log(y[0]); // 21 // from an arraybuffer var buffer = new arraybuffer(8); var z = new int16array(buffer, 0, 4); // from an iterable var iterable = function*(){ yield* [1,2,3]; }(); var int16 = new int16array(iterable); // int16array[1, 2, 3] specifications specification ecmascript (ecma-262)the definition of 'typedarray constructors' in that specification.

Int32Array() constructor - JavaScript
another typedarray var x = new int32array([21, 31]); var y = new int32array(x); console.log(y[0]); // 21 // from an arraybuffer var buffer = new arraybuffer(16); var z = new int32array(buffer, 0, 4); // from an iterable var iterable = function*(){ yield* [1,2,3]; }(); var int32 = new int32array(iterable); // int32array[1, 2, 3] specifications specification ecmascript (ecma-262)the definition of 'typedarray constructors' in that specification.

Int32Array - JavaScript
another typedarray var x = new int32array([21, 31]); var y = new int32array(x); console.log(y[0]); // 21 // from an arraybuffer var buffer = new arraybuffer(16); var z = new int32array(buffer, 0, 4); // from an iterable var iterable = function*(){ yield* [1,2,3]; }(); var int32 = new int32array(iterable); // int32array[1, 2, 3] specifications specification ecmascript (ecma-262)the definition of 'typedarray constructors' in that specification.

Int8Array() constructor - JavaScript
/ from another typedarray var x = new int8array([21, 31]); var y = new int8array(x); console.log(y[0]); // 21 // from an arraybuffer var buffer = new arraybuffer(8); var z = new int8array(buffer, 1, 4); // from an iterable var iterable = function*(){ yield* [1,2,3]; }(); var int8 = new int8array(iterable); // int8array[1, 2, 3] specifications specification ecmascript (ecma-262)the definition of 'typedarray constructors' in that specification.

Int8Array - JavaScript
/ from another typedarray var x = new int8array([21, 31]); var y = new int8array(x); console.log(y[0]); // 21 // from an arraybuffer var buffer = new arraybuffer(8); var z = new int8array(buffer, 1, 4); // from an iterable var iterable = function*(){ yield* [1,2,3]; }(); var int8 = new int8array(iterable); // int8array[1, 2, 3] specifications specification ecmascript (ecma-262)the definition of 'typedarray constructors' in that specification.

Intl - JavaScript
examples formatting dates and numbers you can use intl to format dates and numbers in a form that's conventional for a specific language and region: const count = 26254.39; const date = new date("2012-05-24"); function log(locale) { console.log( `${new intl.datetimeformat(locale).format(date)} ${new intl.numberformat(locale).format(count)}` ); } log("en-us"); // expected output: 5/24/2012 26,254.39 log("de-de"); // expected output: 24.5.2012 26.254,39 specifications specification ecmascript internationalization api (ecma-402...

JSON.parse() - JavaScript
}); // 1 // 2 // 4 // 6 // 5 // 3 // "" json.parse() does not allow trailing commas // both will throw a syntaxerror json.parse('[1, 2, 3, 4, ]'); json.parse('{"foo" : 1, }'); json.parse() does not allow single quotes // will throw a syntaxerror json.parse("{'foo': 1}"); specifications specification ecmascript (ecma-262)the definition of 'json.parse' in that specification.

JSON.stringify() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'json.stringify' in that specification.

Map.prototype[@@iterator]() - JavaScript
using [@@iterator]() with for..of const mymap = new map() mymap.set('0', 'foo') mymap.set(1, 'bar') mymap.set({}, 'baz') for (const entry of mymap) { console.log(entry) } // ["0", "foo"] // [1, "bar"] // [{}, "baz"] for (const [key, value] of mymap) { console.log(`${key}: ${value}`) } // 0: foo // 1: bar // [object]: baz specifications specification ecmascript (ecma-262)the definition of 'map.prototype[@@iterator]()' in that specification.

get Map[@@species] - JavaScript
however, you might want to overwrite this, in order to return parent map objects in your derived class methods: class mymap extends map { // overwrite mymap species to the parent map constructor static get [symbol.species]() { return map; } } specifications specification ecmascript (ecma-262)the definition of 'get map [ @@species ]' in that specification.

Map.prototype[@@toStringTag] - JavaScript
property attributes of map.prototype[@@tostringtag] writable no enumerable no configurable yes syntax map[symbol.tostringtag] examples using tostringtag object.prototype.tostring.call(new map()) // "[object map]" specifications specification ecmascript (ecma-262)the definition of 'map.prototype[@@tostringtag]' in that specification.

Map() constructor - JavaScript
examples creating a new map let mymap = new map([ [1, 'one'], [2, 'two'], [3, 'three'], ]) specifications specification ecmascript (ecma-262)the definition of 'map constructor' in that specification.

Map.prototype.clear() - JavaScript
examples using clear() var mymap = new map(); mymap.set('bar', 'baz'); mymap.set(1, 'foo'); mymap.size; // 2 mymap.has('bar'); // true mymap.clear(); mymap.size; // 0 mymap.has('bar') // false specifications specification ecmascript (ecma-262)the definition of 'map.prototype.clear' in that specification.

Map.prototype.entries() - JavaScript
examples using entries() let mymap = new map() mymap.set('0', 'foo') mymap.set(1, 'bar') mymap.set({}, 'baz') let mapiter = mymap.entries() console.log(mapiter.next().value) // ["0", "foo"] console.log(mapiter.next().value) // [1, "bar"] console.log(mapiter.next().value) // [object, "baz"] specifications specification ecmascript (ecma-262)the definition of 'map.prototype.entries' in that specification.

Map.prototype.forEach() - JavaScript
code logs a line for each element in an map object: function logmapelements(value, key, map) { console.log(`map.get('${key}') = ${value}`) } new map([['foo', 3], ['bar', {}], ['baz', undefined]]).foreach(logmapelements) // logs: // "map.get('foo') = 3" // "map.get('bar') = [object object]" // "map.get('baz') = undefined" specifications specification ecmascript (ecma-262)the definition of 'map.prototype.foreach' in that specification.

Map.prototype.get() - JavaScript
examples using get() let mymap = new map(); mymap.set('bar', 'foo'); mymap.get('bar'); // returns "foo" mymap.get('baz'); // returns undefined specifications specification ecmascript (ecma-262)the definition of 'map.prototype.get' in that specification.

Map.prototype.has() - JavaScript
examples using has() let mymap = new map() mymap.set('bar', "foo") mymap.has('bar') // returns true mymap.has('baz') // returns false specifications specification ecmascript (ecma-262)the definition of 'map.prototype.has' in that specification.

Map.prototype.keys() - JavaScript
examples using keys() var mymap = new map(); mymap.set('0', 'foo'); mymap.set(1, 'bar'); mymap.set({}, 'baz'); var mapiter = mymap.keys(); console.log(mapiter.next().value); // "0" console.log(mapiter.next().value); // 1 console.log(mapiter.next().value); // object specifications specification ecmascript (ecma-262)the definition of 'map.prototype.keys' in that specification.

Map.prototype.set() - JavaScript
mymap.set('bar', 'foo') .set(1, 'foobar') .set(2, 'baz'); specifications specification ecmascript (ecma-262)the definition of 'map.prototype.set' in that specification.

Map.prototype.size - JavaScript
examples using size var mymap = new map(); mymap.set('a', 'alpha'); mymap.set('b', 'beta'); mymap.set('g', 'gamma'); mymap.size // 3 specifications specification ecmascript (ecma-262)the definition of 'map.prototype.size' in that specification.

Map.prototype.values() - JavaScript
examples using values() var mymap = new map(); mymap.set('0', 'foo'); mymap.set(1, 'bar'); mymap.set({}, 'baz'); var mapiter = mymap.values(); console.log(mapiter.next().value); // "foo" console.log(mapiter.next().value); // "bar" console.log(mapiter.next().value); // "baz" specifications specification ecmascript (ecma-262)the definition of 'map.prototype.values' in that specification.

Map - JavaScript
let merged = new map([...first, ...second, [1, 'eins']]) console.log(merged.get(1)) // eins console.log(merged.get(2)) // dos console.log(merged.get(3)) // three specifications specification ecmascript (ecma-262)the definition of 'map' in that specification.

Math.E - JavaScript
examples using math.e the following function returns e: function getnapier() { return math.e; } getnapier(); // 2.718281828459045 specifications specification ecmascript (ecma-262)the definition of 'math.e' in that specification.

Math.LN10 - JavaScript
examples using math.ln10 the following function returns the natural log of 10: function getnatlog10() { return math.ln10; } getnatlog10(); // 2.302585092994046 specifications specification ecmascript (ecma-262)the definition of 'math.ln10' in that specification.

Math.LN2 - JavaScript
examples using math.ln2 the following function returns the natural log of 2: function getnatlog2() { return math.ln2; } getnatlog2(); // 0.6931471805599453 specifications specification ecmascript (ecma-262)the definition of 'math.ln2' in that specification.

Math.LOG10E - JavaScript
examples using math.log10e the following function returns the base 10 logarithm of e: function getlog10e() { return math.log10e; } getlog10e(); // 0.4342944819032518 specifications specification ecmascript (ecma-262)the definition of 'math.log10e' in that specification.

Math.LOG2E - JavaScript
examples using math.log2e the following function returns the base 2 logarithm of e: function getlog2e() { return math.log2e; } getlog2e(); // 1.4426950408889634 specifications specification ecmascript (ecma-262)the definition of 'math.log2e' in that specification.

Math.PI - JavaScript
function calculatecircumference(radius) { return math.pi * (radius + radius); } calculatecircumference(1); // 6.283185307179586 specifications specification ecmascript (ecma-262)the definition of 'math.pi' in that specification.

Math.SQRT1_2 - JavaScript
examples using math.sqrt1_2 the following function returns 1 over the square root of 2: function getroot1_2() { return math.sqrt1_2; } getroot1_2(); // 0.7071067811865476 specifications specification ecmascript (ecma-262)the definition of 'math.sqrt1_2' in that specification.

Math.SQRT2 - JavaScript
examples using math.sqrt2 the following function returns the square root of 2: function getroot2() { return math.sqrt2; } getroot2(); // 1.4142135623730951 specifications specification ecmascript (ecma-262)the definition of 'math.sqrt2' in that specification.

Math.abs() - JavaScript
math.abs('-1'); // 1 math.abs(-2); // 2 math.abs(null); // 0 math.abs(''); // 0 math.abs([]); // 0 math.abs([2]); // 2 math.abs([1,2]); // nan math.abs({}); // nan math.abs('string'); // nan math.abs(); // nan specifications specification ecmascript (ecma-262)the definition of 'math.abs' in that specification.

Math.acos() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'math.acos' in that specification.

Math.acosh() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'math.acosh' in that specification.

Math.asin() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'math.asin' in that specification.

Math.asinh() - JavaScript
examples using math.asinh() math.asinh(1); // 0.881373587019543 math.asinh(0); // 0 specifications specification ecmascript (ecma-262)the definition of 'math.asinh' in that specification.

Math.atan() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'math.atan' in that specification.

Math.atanh() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'math.atanh' in that specification.

Math.cbrt() - JavaScript
}; })(math.pow); // localize math.pow to increase efficiency } examples using math.cbrt() math.cbrt(nan); // nan math.cbrt(-1); // -1 math.cbrt(-0); // -0 math.cbrt(-infinity); // -infinity math.cbrt(0); // 0 math.cbrt(1); // 1 math.cbrt(infinity); // infinity math.cbrt(null); // 0 math.cbrt(2); // 1.2599210498948732 specifications specification ecmascript (ecma-262)the definition of 'math.cbrt' in that specification.

Math.ceil() - JavaScript
math.round10(-55.1, 1); // -60 // floor math.floor10(55.59, -1); // 55.5 math.floor10(59, 1); // 50 math.floor10(-55.51, -1); // -55.6 math.floor10(-51, 1); // -60 // ceil math.ceil10(55.51, -1); // 55.6 math.ceil10(51, 1); // 60 math.ceil10(-55.59, -1); // -55.5 math.ceil10(-59, 1); // -50 specifications specification ecmascript (ecma-262)the definition of 'math.ceil' in that specification.

Math.clz32() - JavaScript
ln2); examples using math.clz32() math.clz32(1); // 31 math.clz32(1000); // 22 math.clz32(); // 32 var stuff = [nan, infinity, -infinity, 0, -0, false, null, undefined, 'foo', {}, []]; stuff.every(n => math.clz32(n) == 32); // true math.clz32(true); // 31 math.clz32(3.5); // 30 specifications specification ecmascript (ecma-262)the definition of 'math.clz32' in that specification.

Math.cos() - JavaScript
examples using math.cos() math.cos(0); // 1 math.cos(1); // 0.5403023058681398 math.cos(math.pi); // -1 math.cos(2 * math.pi); // 1 specifications specification ecmascript (ecma-262)the definition of 'math.cos' in that specification.

Math.cosh() - JavaScript
function(x) { return (math.exp(x) + math.exp(-x)) / 2; } or using only one call to the math.exp() function: math.cosh = math.cosh || function(x) { var y = math.exp(x); return (y + 1 / y) / 2; }; examples using math.cosh() math.cosh(0); // 1 math.cosh(1); // 1.5430806348152437 math.cosh(-1); // 1.5430806348152437 specifications specification ecmascript (ecma-262)the definition of 'math.cosh' in that specification.

Math.exp() - JavaScript
examples using math.exp() math.exp(-1); // 0.36787944117144233 math.exp(0); // 1 math.exp(1); // 2.718281828459045 specifications specification ecmascript (ecma-262)the definition of 'math.exp' in that specification.

Math.expm1() - JavaScript
polyfill this can be emulated with the help of the math.exp() function: math.expm1 = math.expm1 || function(x) { return math.exp(x) - 1; }; examples using math.expm1() math.expm1(-1); // -0.6321205588285577 math.expm1(0); // 0 math.expm1(1); // 1.718281828459045 specifications specification ecmascript (ecma-262)the definition of 'math.expm1' in that specification.

Math.floor() - JavaScript
5.551, -1); // -55.6 round10(-55, 1); // -50 round10(-55.1, 1); // -60 // floor floor10(55.59, -1); // 55.5 floor10(59, 1); // 50 floor10(-55.51, -1); // -55.6 floor10(-51, 1); // -60 // ceil ceil10(55.51, -1); // 55.6 ceil10(51, 1); // 60 ceil10(-55.59, -1); // -55.5 ceil10(-59, 1); // -50 specifications specification ecmascript (ecma-262)the definition of 'math.floor' in that specification.

Math.fround() - JavaScript
d(1.337) === 1.337; // false 21502^150 is too big for a 32-bit float, so infinity is returned: 2 ** 150; // 1.42724769270596e+45 math.fround(2 ** 150); // infinity if the parameter cannot be converted to a number, or it is not-a-number (nan), math.fround() will return nan: math.fround('abc'); // nan math.fround(nan); // nan specifications specification ecmascript (ecma-262)the definition of 'math.fround' in that specification.

Math.hypot() - JavaScript
// 5 math.hypot(3, 4, 5); // 7.0710678118654755 math.hypot(); // 0 math.hypot(nan); // nan math.hypot(nan, infinity); // infinity math.hypot(3, 4, 'foo'); // nan, since +'foo' => nan math.hypot(3, 4, '5'); // 7.0710678118654755, +'5' => 5 math.hypot(-3); // 3, the same as math.abs(-3) specifications specification ecmascript (ecma-262)the definition of 'math.hypot' in that specification.

Math.imul() - JavaScript
number.max_safe_integer /*0x1fffffffffffff*/ if (opa & 0xffc00000 /*!== 0*/) result += (opa & 0xffc00000) * opb |0; return result |0; }; examples using math.imul() math.imul(2, 4); // 8 math.imul(-1, 8); // -8 math.imul(-2, -2); // 4 math.imul(0xffffffff, 5); // -5 math.imul(0xfffffffe, 5); // -10 specifications specification ecmascript (ecma-262)the definition of 'math.imul' in that specification.

Math.log() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'math.log' in that specification.

Math.log10() - JavaScript
examples using math.log10() math.log10(2); // 0.3010299956639812 math.log10(1); // 0 math.log10(0); // -infinity math.log10(-2); // nan math.log10(100000); // 5 polyfill this can be emulated with the following function: math.log10 = math.log10 || function(x) { return math.log(x) * math.log10e; }; specifications specification ecmascript (ecma-262)the definition of 'math.log10' in that specification.

Math.log1p() - JavaScript
x : x * (math.log(x + 1) / nearx); }; examples using math.log1p() math.log1p(1); // 0.6931471805599453 math.log1p(0); // 0 math.log1p(-1); // -infinity math.log1p(-2); // nan specifications specification ecmascript (ecma-262)the definition of 'math.log1p' in that specification.

Math.log2() - JavaScript
if (!math.log2) math.log2 = function(x) { return math.log(x) * math.log2e; }; examples using math.log2() math.log2(3); // 1.584962500721156 math.log2(2); // 1 math.log2(1); // 0 math.log2(0); // -infinity math.log2(-2); // nan math.log2(1024); // 10 specifications specification ecmascript (ecma-262)the definition of 'math.log2' in that specification.

Math.max() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'math.max' in that specification.

Math.min() - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'math.min' in that specification.

Math.random() - JavaScript
function getrandomintinclusive(min, max) { min = math.ceil(min); max = math.floor(max); return math.floor(math.random() * (max - min + 1) + min); //the maximum is inclusive and the minimum is inclusive } specifications specification ecmascript (ecma-262)the definition of 'math.random' in that specification.

Math.random() - JavaScript
function getrandomintinclusive(min, max) { min = math.ceil(min); max = math.floor(max); return math.floor(math.random() * (max - min + 1) + min); //the maximum is inclusive and the minimum is inclusive } specifications specification ecmascript (ecma-262)the definition of 'math.random' in that specification.

Math.round() - JavaScript
examples using round math.round( 20.49); // 20 math.round( 20.5 ); // 21 math.round( 42 ); // 42 math.round(-20.5 ); // -20 math.round(-20.51); // -21 specifications specification ecmascript (ecma-262)the definition of 'math.round' in that specification.

Math.sign() - JavaScript
examples using math.sign() math.sign(3); // 1 math.sign(-3); // -1 math.sign('-3'); // -1 math.sign(0); // 0 math.sign(-0); // -0 math.sign(nan); // nan math.sign('foo'); // nan math.sign(); // nan specifications specification ecmascript (ecma-262)the definition of 'math.sign' in that specification.

Math.sin() - JavaScript
examples using math.sin() math.sin(0); // 0 math.sin(1); // 0.8414709848078965 math.sin(math.pi / 2); // 1 specifications specification ecmascript (ecma-262)the definition of 'math.sin' in that specification.

Math.sinh() - JavaScript
exp() function: math.sinh = math.sinh || function(x) { return (math.exp(x) - math.exp(-x)) / 2; } or using only one call to the math.exp() function: math.sinh = math.sinh || function(x) { var y = math.exp(x); return (y - 1 / y) / 2; } examples using math.sinh() math.sinh(0); // 0 math.sinh(1); // 1.1752011936438014 specifications specification ecmascript (ecma-262)the definition of 'math.sinh' in that specification.

Math.sqrt() - JavaScript
examples using math.sqrt() math.sqrt(9); // 3 math.sqrt(2); // 1.414213562373095 math.sqrt(1); // 1 math.sqrt(0); // 0 math.sqrt(-1); // nan math.sqrt(-0); // -0 specifications specification ecmascript (ecma-262)the definition of 'math.sqrt' in that specification.

Math.tan() - JavaScript
function gettandeg(deg) { var rad = deg * math.pi/180; return math.tan(rad); } specifications specification ecmascript (ecma-262)the definition of 'math.tan' in that specification.

Math.tanh() - JavaScript
-1 : (a - b) / (a + b); } examples using math.tanh() math.tanh(0); // 0 math.tanh(infinity); // 1 math.tanh(1); // 0.7615941559557649 specifications specification ecmascript (ecma-262)the definition of 'math.tanh' in that specification.

Math.trunc() - JavaScript
math.ceil(v) : math.floor(v); }; } examples using math.trunc() math.trunc(13.37); // 13 math.trunc(42.84); // 42 math.trunc(0.123); // 0 math.trunc(-0.123); // -0 math.trunc('-1.123'); // -1 math.trunc(nan); // nan math.trunc('foo'); // nan math.trunc(); // nan specifications specification ecmascript (ecma-262)the definition of 'math.trunc' in that specification.

Math - JavaScript
returning a random integer between two bounds this can be achieved with a combination of math.random() and math.floor(): function random(min, max) { const num = math.floor(math.random() * (max - min + 1)) + min; return num; } random(1, 10); specifications specification ecmascript (ecma-262)the definition of 'math' in that specification.

NaN - JavaScript
let arr = [2, 4, nan, 12]; arr.indexof(nan); // -1 (false) arr.includes(nan); // true arr.findindex(n => number.isnan(n)); // 2 specifications specification ecmascript (ecma-262)the definition of 'nan' in that specification.

Number.EPSILON - JavaScript
polyfill if (number.epsilon === undefined) { number.epsilon = math.pow(2, -52); } examples testing equality x = 0.2; y = 0.3; z = 0.1; equal = (math.abs(x - y + z) < number.epsilon); specifications specification ecmascript (ecma-262)the definition of 'number.epsilon' in that specification.

Number.MAX_SAFE_INTEGER - JavaScript
number.max_safe_integer * number.epsilon; // 2 specifications specification ecmascript (ecma-262)the definition of 'number.max_safe_integer' in that specification.

Number.MAX_VALUE - JavaScript
if (num1 * num2 <= number.max_value) { func1(); } else { func2(); } specifications specification ecmascript (ecma-262)the definition of 'number.max_value' in that specification.

Number.MIN_SAFE_INTEGER - JavaScript
examples using min_safe_integer number.min_safe_integer // -9007199254740991 -(math.pow(2, 53) - 1) // -9007199254740991 specifications specification ecmascript (ecma-262)the definition of 'number.min_safe_integer' in that specification.

Number.MIN_VALUE - JavaScript
if (num1 / num2 >= number.min_value) { func1(); } else { func2(); } specifications specification ecmascript (ecma-262)the definition of 'number.min_value' in that specification.

Number.NEGATIVE_INFINITY - JavaScript
var smallnumber = (-number.max_value) * 2; if (smallnumber === number.negative_infinity) { smallnumber = returnfinite(); } specifications specification ecmascript (ecma-262)the definition of 'number.negative_infinity' in that specification.

Number.NaN - JavaScript
specifications specification ecmascript (ecma-262)the definition of 'number.nan' in that specification.

Number() constructor - JavaScript
examples creating number objects const a = new number('123'); // a === 123 is false const b = number('123'); // b === 123 is true a instanceof number; // is true b instanceof number; // is false specifications specification ecmascript (ecma-262)the definition of 'number constructor' in that specification.