Comparison of layout engines (ECMAScript)

The following tables compare ECMAScript (particularly JavaScript) support for several popular layout engines. Please see the individual products' articles for further information. Unless otherwise specified in footnotes, comparisons are based on the stable versions without any add-ons, extensions or external programs.

Explanation of the tables

Engine nomenclature

Rather than the names of web browsers and HTML to PDF converters, the names of the underlying engines are used. Some of the software and online converters that use the various engines are listed below.

Layout engine

Release version

Preview version

Used by

Amaya

11.4.7^[1]

N/A

No longer developed; Amaya

Blink

537.36

source code^{[note 1]}

Chromium/Chrome (28+), Opera (15+), Sleipnir, Vivaldi, Yandex, Liebao and Samsung Browser .

EdgeHTML

13.10586 ^[2]

N/A

Microsoft Edge, Universal Windows Platform (UWP) JavaScript apps

Gecko

Standard	50.0.2 / November 30, 2016 (2016-11-30)^[3]
ESR	45.5.1 / November 30, 2016 (2016-11-30)^[4]

Beta	51.0beta / November 16, 2016 (2016-11-16)^[5]^[6] semiweekly release
Developer Edition	52.0a2 / November 18, 2016 (2016-11-18)^[7]^[8] daily release
Nightly	53.0a1 / November 14, 2016 (2016-11-14)^[9]^[10] daily release

All Mozilla software, including Firefox; SeaMonkey and Galeon; Camino; K-Meleon; Flock (up to 2.x); Debian IceWeasel; GNU IceCat (formerly GNU IceWeasel); Cyberfox; Icedove, Iceape and Iceowl; Firefox for mobile ("Fennec"). Also used by the Maple platform in 2010 and 2011 Samsung "SmartTV" devices which are based on the build used in Firefox 2.5. The Nokia Asha platform also uses Gecko for web apps rendering.

Goanna

27.0.2 (December 2, 2016^[11]) [±]

27 public beta 3 (October 27, 2016^[12]) [±]

Pale Moon and FossaMail

KHTML

4.12.3^[13]

N/A

Konqueror^{[note 2]}

Martha

PDFreactor, Nimbudocs Editor and edit-on NG

Presto

2.12.388

N/A

No longer developed; Opera and Opera Mobile use Blink now; Nintendo DS & DSi Browser; Internet Channel

Prince

20160810

HTML to PDF converters: Prince (previously called PrinceXML), DocRaptor. The information in the Prince columns is also true of Prince for Books, a related layout engine.

Tasman

(IE 5.2.3 for Mac)

N/A

No longer developed (aborted in 2003); Internet Explorer 5+ for Mac OS X

Trident

7.0 (IE 11)

N/A

Internet Explorer and other Internet Explorer shells like Maxthon (Microsoft Windows operating systems only), Windows Phone 8

WebKit

534.20

nightly build^{[note 3]}

Tizen (both OS and browser), Safari (both desktop and mobile), Google Chrome (before 28), Maxthon 3, Shiira, iCab 4, OmniWeb 5.5+, Web, Adobe AIR, Midori, surf, Adobe Dreamweaver CS4 and CS5, Android browser, Palm webOS browser, Symbian S60 browser, OWB, Steam, Rekonq, Arora, Flock (version 3+), RockMelt, Dolphin Browser, Konqueror^{[note 2]}. Used by the LG Smart TV platform to enable web content on TVs. HTML to PDF converters: wkhtmltopdf, PhantomJS, Pdfcrowd^[14], http://www.online-convert.com/^[15].

↑ "chromium / chromium/blink". chromium.googlesource.com. Google. Retrieved 2014-05-27.
1 2 In Konqueror, the user can switch the used layout engine.
↑ "WebKit Nightly Builds". webkit.org. Retrieved 2014-05-27.

Values

Values indicate the level of support in the most recent version of the layout engine, or (if a version number is given) in the specified version. Version numbers without any other value indicate the version at which the layout engine first fully supported the feature.

Value	Meaning
Yes	Indicates that the layout engine fully supports this property/element when valid values are used.
No	Indicates that the property/element is completely ignored.
Partial	Indicates that the property/element is understood, but that not all values are supported. Supported values are implemented correctly.
Incorrect	Indicates that the property/element is understood, but that it is not implemented correctly in all cases.
Experimental	Indicates that the property/element is understood, but supported under an alternate name. May be incomplete or buggy.
Dropped	Indicates that the property/element is no longer supported.
Nightly build	Indicates that the property/element is supported to some extent in an experimental/nightly build. Future support is expected.
Depends	Indicates that the property/element is supported only on certain platforms, or if certain settings are configured.

ECMAScript version support

	Trident	Gecko	WebKit	Presto	Blink
Name of ECMAScript Engine	JScript/Chakra	Spidermonkey/TraceMonkey/JägerMonkey/IonMonkey	JavaScriptCore/SquirrelFish Extreme	Linear B/Futhark/Carakan	V8
ECMAScript Edition 3	Yes	0.6	Yes	1.0	Yes
ECMAScript Edition 5	5.0	2.0	Partial	Yes	Yes
JavaScript 1.5 extensions	No	0.6	Yes	1.0	Yes
JavaScript 1.6 extensions (excluding E4X)	No	1.8	Partial	Partial	Partial
JavaScript 1.7 extensions	No	1.8.1	No	Partial	No
JavaScript 1.8 extensions	No	1.9	Partial	No	Partial
JavaScript 1.8.1 extensions	No	1.9.1	No	No	No
JScript .NET extensions	No	No	No	No	No
ActionScript extensions	No	No	No	No	No
E4X	No	Dropped^[16]	No	No	No

Standard Library

Global object

	Trident	Gecko	WebKit	Presto	Blink
Value properties
`NaN`	4.0	0.6	Yes	Yes	Yes
`Infinity`	4.0	0.6	Yes	Yes	Yes
`undefined`	5.5	0.6	Yes	Yes	Yes
Function properties
`eval(x)`	3.0	0.6	Yes	Yes	Yes
`parseInt(string [, radix])`	3.0	0.6	Yes	Yes	Yes
`parseFloat(string)`	3.0	0.6	Yes	Yes	Yes
`isNaN(number)`	4.0	0.6	Yes	Yes	Yes
`isFinite(number)`	4.0	0.6	Yes	Yes	Yes
URI handling functions
`decodeURI(encodedURI)`	5.5	0.6	Yes	Yes	Yes
`decodeURIComponent(encodedURIComponent)`	5.5	0.6	Yes	Yes	Yes
`encodeURI(uri)`	5.5	0.6	Yes	Yes	Yes
`encodeURIComponent(uriComponent)`	5.5	0.6	Yes	Yes	Yes
Constructor properties
`Object`	4.0	Yes	Yes	Yes	Yes
`Function`	4.0	Yes	Yes	Yes	Yes
`Array`	4.0	Yes	Yes	Yes	Yes
`String`	3.0	Yes	Yes	Yes	Yes
`Boolean`	3.0	Yes	Yes	Yes	Yes
`Number`	3.0	Yes	Yes	Yes	Yes
`Date`	3.0	Yes	Yes	Yes	Yes
`RegExp`	4.0	Yes	Yes	Yes	Yes
`Error`	5.0	Yes	Yes	Yes	Yes
`EvalError`	5.0	Yes	Yes	Yes	Yes
`RangeError`	5.0	Yes	Yes	Yes	Yes
`ReferenceError`	5.0	Yes	Yes	Yes	Yes
`SyntaxError`	5.0	Yes	Yes	Yes	Yes
`TypeError`	5.0	Yes	Yes	Yes	Yes
`URIError`	5.0	Yes	Yes	Yes	Yes
Other properties
`Math`	3.0	Yes	Yes	Yes	Yes
Additional properties
`escape(string)`	3.0	Yes	Yes	Yes	Yes
`unescape(string)`	3.0	Yes	Yes	Yes	Yes

Object object

	Trident	Gecko	WebKit	Presto	Blink
Called as function
`Object([value])`	Yes	Yes	Yes	Yes	Yes
Called as constructor
`new Object([value])`	4.0	Yes	Yes	Yes	Yes
Properties
`prototype`	4.0	Yes	Yes	Yes	Yes
Properties of prototype
`constructor`	4.0	Yes	Yes	Yes	Yes
`toString()`	4.0	Yes	Yes	Yes	Yes
`toLocaleString()`	4.0	Yes	Yes	Yes	Yes
`valueOf()`	4.0	Yes	Yes	Yes	Yes
`hasOwnProperty(V)`	5.5	Yes	3	Yes	Yes
`isPrototypeOf(V)`	5.5	Yes	3	Yes	Yes
`propertyIsEnumerable(V)`	5.5	Yes	3	Yes	Yes

Function object

	Trident	Gecko	WebKit	Presto	Blink
Called as function
`Function([[p1 [, p2 [, ...]],] body])`	?	Yes	Yes	?	Yes
Called as constructor
`new Function([[p1 [, p2 [, ...]],] body])`	4.0	1.0	Yes	1.0	Yes
Properties
`length`	?	1.0	Yes	Yes	Yes
`prototype`	4.0	1.0	Yes	1.0	Yes
Properties of prototype
`length`	?	1.0	Yes	?	Yes
`constructor`	4.0	1.0	Yes	1.0	Yes
`toString()`	4.0	1.0	Yes	1.0	Yes
`apply(thisArg, argArray)`	4.0	1.0	Yes	1.0	Yes
`call(thisArg [, arg1 [, arg2 [, ...]]])`	4.0	1.0	Yes	1.0	Yes
Properties of instances
`length`	4.0	1.0	Yes	1.0	Yes
`prototype`	4.0	1.0	Yes	1.0	Yes

Array object

	Trident	Gecko	WebKit	Presto	Blink
Called as function
`Array([item1 [, item2 [, ...]]])`	Yes	Yes	Yes	Yes	Yes
Called as constructor
`new Array([item1, item2 [, ...]])`	4.0	1.0	Yes	1.0	Yes
`new Array(len)`	4.0	1.0	Yes	1.0	Yes
Properties
`prototype`	4.0	1.0	Yes	1.0	Yes
Properties of prototype
`constructor`	4.0	1.0	Yes	1.0	Yes
`toString()`	4.0	1.0	Yes	1.0	Yes
`toLocaleString()`	5.5	1.0	Yes	1.0	Yes
`concat([item1 [, item2 [,...]]])`	4.0	1.0	Yes	1.0	Yes
`join(separator)`	4.0	1.0	Yes	1.0	Yes
`pop()`	5.5	1.0	Yes	1.0	Yes
`push([item1 [, item2 [,...]]])`	5.5	1.0	Yes	1.0	Yes
`reverse()`	4.0	1.0	Yes	1.0	Yes
`shift()`	5.5	1.0	Yes	1.0	Yes
`slice(start, end)`	4.0	1.0	Yes	1.0	Yes
`sort(comparefn)`	4.0	1.0	Yes	1.0	Yes
`splice(start, deleteCount [, item1 [, item2 [, ...]]])`	5.5	1.0	Yes	1.0	Yes
`unshift([item1 [, item2 [, ...]]])`	5.5	1.0	Yes	1.0	Yes
`indexOf(searchElement[, fromIndex])`	9.0^[17]	1.8	522	2.1	Yes
`lastIndexOf(searchElement[, fromIndex])`		1.8	522	2.1	Yes
`filter(callback[, thisObject])`		1.8	522	2.1	Yes
`forEach(callback[, thisObject])`		1.8	522	2.1	Yes
`every(callback[, thisObject])`		1.8	522	2.1	Yes
`map(callback[, thisObject])`		1.8	522	2.1	Yes
`some(callback[, thisObject])`		1.8	522	2.1	Yes
`reduce(callback[, initialValue])`		1.9	528	2.5.22	Yes
`reduceRight(callback[, initialValue])`		1.9	528	2.5.22	Yes
Properties of instances
`length`	4.0	1.0	Yes	1.0	Yes

String object

	Trident	Gecko	WebKit	Presto	Blink
Called as function
`String([value])`	Yes	Yes	Yes	Yes	Yes
Called as constructor
`new String([value])`	3.0	1.0	Yes	1.0	Yes
Properties
`prototype`	4.0	1.0	Yes	1.0	Yes
`fromCharCode([char0 [, char1 [, ...]]])`	4.0	1.0	Yes	1.0	Yes
Properties of prototype
`constructor`	4.0	1.0	Yes	1.0	Yes
`toString()`	3.0	1.0	Yes	1.0	Yes
`valueOf()`	3.0	1.0	Yes	1.0	Yes
`charAt(pos)`	3.0	1.0	Yes	1.0	Yes
`charCodeAt(pos)`	5.5	1.0	Yes	1.0	Yes
`concat([string1 [, string2 [, ...]]])`	4.0	1.0	Yes	1.0	Yes
`indexOf(searchString, position)`	3.0	1.0	Yes	1.0	Yes
`lastIndexOf(searchString, position)`	3.0	1.0	Yes	1.0	Yes
`localeCompare(that)`	5.5	1.0	Yes	1.0	Yes
`match(regexp)`	4.0	1.0	Yes	1.0	Yes
`replace(searchValue, replaceValue)`	3.0	1.0	Yes	1.0	Yes
`search(regexp)`	4.0	1.0	Yes	1.0	Yes
`slice(start, end)`	4.0	1.0	Yes	1.0	Yes
`split(separator, limit)`	4.0	1.0	Yes	1.0	Yes
`substring(start, end)`	3.0	1.0	Yes	1.0	Yes
`toLowerCase()`	3.0	1.0	Yes	1.0	Yes
`toLocaleLowerCase(comparefn)`	3.0	1.0	Yes	1.0	Yes
`toUpperCase()`	3.0	1.0	Yes	1.0	Yes
`toLocaleUpperCase()`	3.0	1.0	Yes	1.0	Yes
Additional properties of prototype
`substr(start, length)`	4.0	1.0	Yes	1.0	Yes
Properties of instances
`length`	3.0	1.0	Yes	1.0	Yes

Boolean object

	Trident	Gecko	WebKit	Presto	Blink
Called as function
`Boolean([value])`	Yes	Yes	Yes	Yes	Yes
Called as constructor
`new Boolean([value])`	3.0	Yes	Yes	Yes	Yes
Properties
`prototype`	4.0	Yes	Yes	Yes	Yes
Properties of prototype
`constructor`	4.0	Yes	Yes	Yes	Yes
`toString()`	4.0	Yes	Yes	Yes	Yes
`valueOf()`	4.0	Yes	Yes	Yes	Yes

Number object

	Trident	Gecko	WebKit	Presto
Called as function
`Number([value])`	?	Yes	Yes	?
Called as constructor
`new Number([value])`	3.0	1.0	Yes	1.0
Properties
`prototype`	4.0	1.0	Yes	1.0
`MAX_VALUE`	4.0	1.0	Yes	1.0
`MIN_VALUE`	4.0	1.0	Yes	1.0
`NaN`	4.0	1.0	Yes	1.0
`NEGATIVE_INFINITY`	4.0	1.0	Yes	1.0
`POSITIVE_INFINITY`	4.0	1.0	Yes	1.0
Properties of prototype
`constructor`	4.0	1.0	Yes	1.0
`toString([radix])`	4.0	1.0	Yes	1.0
`toLocaleString()`	5.5	1.0	Yes	1.0
`valueOf()`	4.0	1.0	Yes	1.0
`toFixed(fractionDigits)`	5.5	1.0	Yes	1.0
`toExponential(fractionDigits)`	5.5	1.0	Yes	1.0
`toPrecision(precision)`	5.5	1.0	Yes	1.0

Math object

	Trident	Gecko	WebKit	Presto
Value properties
`E`	3.0	1.0	Yes	1.0
`LN10`	3.0	1.0	Yes	1.0
`LN2`	3.0	1.0	Yes	1.0
`LOG2E`	3.0	1.0	Yes	1.0
`LOG10E`	3.0	1.0	Yes	1.0
`PI`	Yes	Yes	Yes	Yes
`SQRT1_2`	3.0	1.0	Yes	1.0
`SQRT2`	Yes	Yes	Yes	Yes
Function properties
`abs(x)`	3.0	1.0	Yes	1.0
`acos(x)`	3.0	1.0	Yes	1.0
`asin(x)`	3.0	1.0	Yes	1.0
`atan(x)`	3.0	1.0	Yes	1.0
`atan2(y, x)`	3.0	1.0	Yes	1.0
`ceil(x)`	3.0	1.0	Yes	1.0
`cos(x)`	3.0	1.0	Yes	1.0
`exp(x)`	3.0	1.0	Yes	1.0
`floor(x)`	3.0	1.0	Yes	1.0
`log(x)`	3.0	1.0	Yes	1.0
`max([value1 [, value2 [, ...]]])`	3.0	1.0	Yes	1.0
`min([value1 [, value2 [, ...]]])`	3.0	1.0	Yes	1.0
`pow(x, y)`	3.0	1.0	Yes	1.0
`random()`	3.0	1.0	Yes	1.0
`round(x)`	3.0	1.0	Yes	1.0
`sin(x)`	3.0	1.0	Yes	1.0
`sqrt(x)`	3.0	1.0	Yes	1.0
`tan(x)`	3.0	1.0	Yes	1.0

Date object

	Trident	Gecko	WebKit	Presto
Called as function
`Date ([year [, month [, date [, hours [, minutes [, seconds [, ms ]]]]]]])`	?	?	?	?
Called as constructor
`new Date (year, month [, date [, hours [, minutes [, seconds [, ms ]]]]])`	4.0	1.0	Yes	1.0
`new Date (value)`	4.0	1.0	Yes	1.0
`new Date ()`	4.0	1.0	Yes	1.0
Properties
`prototype`	4.0	1.0	Yes	1.0
`parse(string)`	3.0	1.0	Yes	1.0
`UTC (year, month [, date [, hours [, minutes [, seconds [, ms ]]]]])`	3.0	1.0	Yes	1.0
Properties of prototype
`constructor`	4.0	1.0	Yes	1.0
`toString()`	4.0	1.0	Yes	1.0
`toDateString()`	4.0	1.0	Yes	1.0
`toTimeString()`	4.0	1.0	Yes	1.0
`toLocaleString()`	4.0	1.0	Yes	1.0
`toLocaleDateString()`	4.0	1.0	Yes	1.0
`toLocaleTimeString()`	4.0	1.0	Yes	1.0
`valueOf()`	4.0	1.0	Yes	1.0
`getTime()`	3.0	1.0	Yes	1.0
`getFullYear()`	4.0	1.0	Yes	1.0
`getMonth()`	3.0	1.0	Yes	1.0
`getUTCMonth()`	4.0	1.0	Yes	1.0
`getDate()`	3.0	1.0	Yes	1.0
`getUTCDate()`	4.0	1.0	Yes	1.0
`getDay()`	3.0	1.0	Yes	1.0
`getUTCDay()`	4.0	1.0	Yes	1.0
`getHours()`	3.0	1.0	Yes	1.0
`getUTCHours()`	4.0	1.0	Yes	1.0
`getMinutes()`	3.0	1.0	Yes	1.0
`getUTCMinutes()`	4.0	1.0	Yes	1.0
`getSeconds()`	3.0	1.0	Yes	1.0
`getUTCSeconds()`	4.0	1.0	Yes	1.0
`getMilliseconds()`	4.0	1.0	Yes	1.0
`getUTCMilliseconds()`	4.0	1.0	Yes	1.0
`getTimezoneOffset()`	4.0	1.0	Yes	1.0
`setTime(time)`	3.0	1.0	Yes	1.0
`setMilliseconds(ms)`	4.0	1.0	Yes	1.0
`setUTCMilliseconds(ms)`	4.0	1.0	Yes	1.0
`setSeconds(sec [, ms])`	3.0	1.0	Yes	1.0
`setUTCSeconds(sec [, ms])`	4.0	1.0	Yes	1.0
`setMinutes(min [, sec [, ms]])`	3.0	1.0	Yes	1.0
`setUTCMinutes(min [, sec [, ms]])`	4.0	1.0	Yes	1.0
`setHours(hour [, min [, sec [, ms]]])`	4.0	1.0	Yes	1.0
`setUTCHours(hour [, min [, sec [, ms]]])`	4.0	1.0	Yes	1.0
`setDate(date)`	4.0	1.0	Yes	1.0
`setUTCDate(date)`	4.0	1.0	Yes	1.0
`setMonth(month [, date])`	3.0	1.0	Yes	1.0
`setUTCMonth(month [, date])`	4.0	1.0	Yes	1.0
`setFullYear(year [, month [, date]])`	4.0	1.0	Yes	1.0
`setUTCFullYear(year [, month [, date]])`	4.0	1.0	Yes	1.0
`toUTCString()`	4.0	1.0	Yes	1.0
Additional properties of prototype
`getYear()`	3.0	1.0	Yes	1.0
`setYear(year)`	3.0	1.0	Yes	1.0
`toGMTString()`	4.0	1.0	Yes	1.0

RegExp object

	Trident	Gecko	WebKit	Presto
Called as function
`RegExp (pattern, flags)`	?	?	?	?
Called as constructor
`new RegExp (pattern, flags)`	4.0	1.0	Yes	1.0
Properties
`prototype`	4.0	1.0	Yes	1.0
Properties of prototype
`constructor`	4.0	1.0	Yes	1.0
`exec(string)`	4.0	1.0	Yes	1.0
`test(string)`	4.0	1.0	Yes	1.0
`toString()`	4.0	1.0	Yes	1.0
Properties of instances
`source`	4.0	1.0	Yes	1.0
`global`	4.0	1.0	Yes	1.0
`ignoreCase`	5.5	1.0	Yes	1.0
`multiline`	5.5	1.0	Yes	1.0
`lastIndex`	4.0	1.0	Yes	1.0

Error object

	Trident	Gecko	WebKit	Presto
Called as function
`Error (message)`	?	?	?	?
Called as constructor
`new Error (message)`	5.0	1.0	Yes	1.0
Properties
`prototype`	5.0	1.0	Yes	1.0
Properties of prototype
`constructor`	5.0	1.0	Yes	1.0
`name`	5.5	1.0	Yes	1.0
`message`	5.5	1.0	Yes	1.0
`toString()`	5.0	1.0	Yes	1.0

NativeError objects

	Trident	Gecko	WebKit	Presto
Called as function
`EvalError (message)`	?	1.0	Yes	?
`RangeError (message)`	?	1.0	Yes	?
`ReferenceError (message)`	?	1.0	Yes	?
`SyntaxError (message)`	?	1.0	Yes	?
`TypeError (message)`	?	1.0	Yes	?
`URIError (message)`	?	1.0	Yes	?
Called as constructor
`new EvalError (message)`	?	1.0	Yes	?
`new RangeError (message)`	?	1.0	Yes	?
`new ReferenceError (message)`	?	1.0	Yes	?
`new SyntaxError (message)`	?	1.0	Yes	?
`new TypeError (message)`	?	1.0	Yes	?
`new URIError (message)`	?	1.0	Yes	?
Properties
`prototype`	?	1.0	?	?
Properties of prototype
`constructor`	?	1.0	?	?
`name`	?	1.0	Yes	?
`message`	?	1.0	Yes	?

References

↑ Amaya Binary Releases, Most recent download link in stable
↑ Change log between EdgeHTML 12.10240 and 13.10586
↑ "Firefox — Notes (50.0.2) — Mozilla". mozilla.org. 2016-11-30. Retrieved 2016-11-30.
↑ "Firefox Extended Support Release — Notes (45.5.1) — Mozilla". mozilla.org. 2016-11-30. Retrieved 2016-11-30.
↑ "Firefox — Beta Notes (50.0beta) — Mozilla". 2016-10-16. Retrieved 2016-10-23.
↑ "Mozilla Firefox Web Browser — Download Firefox Beta in your language — Mozilla". Retrieved 2016-07-02.
↑ "Firefox — Aurora Notes (52.0a2) — Mozilla". 2016-11-18. Retrieved 2016-11-18.
↑ "Mozilla Firefox Web Browser — Download Developer Edition in your language — Mozilla". Retrieved 2016-11-18.
↑ "RapidRelease/Calendar - MozillaWiki". Retrieved 2016-10-21.
↑ "Mozilla Firefox Web Browser — Download Firefox Nightly in your language — Mozilla". Retrieved 2016-10-23.
↑ "Pale Moon Release Notes". Pale Moon. 2016-12-02. Retrieved 2016-12-02.
↑ "Pale Moon public beta/unstable branch release notes". Moonchild Productions. 2016-10-27. Retrieved 2016-10-27.
↑ Download for kdelibs, Most recent download link in stable
↑ Pdfcrowd FAQ, “Pdfcrowd is built around Webkit.”
↑ ‘Producer’ metadata in the resulting pdf., https://www.coolutils.com/Online/HTML-Converter/ Free Online HTML Converter around Webkit
↑ E4X, Mozilla
↑ ECMAScript 5 Arrays, Microsoft

Notes

External links

Webdevout — mostly covers Windows browsers. Extensive bug testing.

ECMAScript

Dialects

Engines
(comparison)

Carakan
Futhark
InScript
JavaScriptCore
- SquirrelFish
JScript
KJS
Linear B
Narcissus
QtScript
Rhino
SpiderMonkey
- TraceMonkey
- JägerMonkey
Tamarin
V8
Chakra (JavaScript engine)
JScript .NET
Nashorn

Frameworks

Client-side	Ample SDK Chaplin.js Dojo Echo Ext JS Google Web Toolkit jQuery Lively Kernel midori MochiKit MooTools Prototype Pyjamas qooxdoo Rialto Rico script.aculo.us SmartClient SproutCore Spry Wakanda Framework YUI Library

Server-side	AppJet Jaxer Node.js WakandaDB

Multiple	Cappuccino Objective-J PureMVC

Libraries	Backbone.js SWFObject SWFAddress Underscore.js

People

Other

Lists: JavaScript libraries; Ajax frameworks
Comparisons: JavaScript frameworks; server-side JavaScript

Layout engines

Active	Blink EdgeHTML Gecko Goanna KHTML MARTHA Prince QtWebEngine Servo WebKit

Discontinued	Amaya Boxely Gazelle GtkHTML HTMLayout iCab Mariner Presto Tasman Tkhtml Trident

Comparisons	HTML non-standard HTML HTML5 media canvas XML XHTML 1.1 MathML SVG CSS ECMAScript DOM Graphics Typography

JavaScript

Code analysis	JSHint JSLint

Compilers	CoffeeScript Dart Emscripten Google Closure Compiler Google Web Toolkit Morfik TypeScript AtScript Opa Haxe ClojureScript

Concepts	Ajax Client-side Dynamic HTML JavaScript library JavaScript syntax Unobtrusive JavaScript

Debuggers	Firebug Komodo IDE Microsoft Script Debugger Microsoft Script Editor Opera Dragonfly Venkman Visual Studio Visual Studio Express Visual Studio Code Web Inspector

Doc generators	JSDoc

Editors (comparison)	Ace Atom Cloud9 IDE CodeMirror Codenvy Koding Light Table Orion Visual Studio Visual Studio Express Visual Studio Code Visual Studio Online

Engines	Comparison of layout engines List of ECMAScript engines List of JavaScript engines

Frameworks	Comparison of JavaScript frameworks List of JavaScript libraries

Related technologies	Cascading Style Sheets Document Object Model HTML JSON WebAssembly

Package managers	npm NuGet Bower yarn

Server-side	Active Server Pages CommonJS JSGI Node.js Wakanda

Unit testing	Jasmine Mocha JSUnit QUnit List of JavaScript unit testing frameworks

People	Douglas Crockford Brendan Eich John Resig

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