Nashorn (JavaScript engine): Difference between revisions

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| developer = [[Oracle Corporation]], OpenJDK Community

| latest release version = 15.37

| latest release date = {{Start date and age|20212025|0608|2921}}

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'''Nashorn''' is a [[JavaScript engine]] developed in the [[Java (programming language)|Java]] programming language originally by [[Oracle Corporation|Oracle]] and later by the OpenJDK Community. It relies on the support for dynamically typed languages on the Java Platform (JSR 292) (a concept first realized in the experimental [[Da Vinci Machine]] and a standard part of Java 7 and later.) Nashorn has beenwas included with [[Java 8]] through JDK 14.<ref>{{cite web

| url=http://www.wiki.jvmlangsummit.com/images/c/ce/Nashorn.pdf

| title=Adventures in JSR-292 or How To Be A Duck Without Really Trying

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| date=July 2011

| publisher=[[Oracle Corporation]]

| access-date=2011-07-24}}</ref><ref>{{cite web

| archive-date=2011-08-19

| archive-url=https://web.archive.org/web/20110819110827/http://openjdk.java.net/projects/mlvm/jvmlangsummit/agenda.html

| url-status=dead

}}</ref><ref>{{cite web

| url=http://www.wiki.jvmlangsummit.com/images/2/27/JVMLS_GES.pdf

| title=JVM Language Summit: Moving Java Forward, aka 'Pointy haired manager talk'

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| publisher=[[Oracle Corporation]]

| access-date=2011-07-24

| archive-url=https://wwwweb.webcitationarchive.org/6I6yxnS3o?url=web/20120423215424/http://wiki.jvmlangsummit.com/images/2/27/JVMLS_GES.pdf

| archive-date=20132012-0704-1423

| url-status=dead

}}</ref> and then confirmed at [[JavaOne]] in October 2011.<ref>{{cite web

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| access-date=2012-12-21}}</ref>

It provides a 100% support of [[ECMAScript]] 5.1.<ref>{{Cite web|url=https://docs.oracle.com/en/java/javase/12/docs/api/jdk.scripting.nashorn/module-summary.html|title = Java Platform, Standard Edition Java API Reference}}</ref> It was the first JavaScript implementation to achieve 100% pass rate on the ECMAScript 5.1 test suite.<ref>{{Cite web|url=https://twitter.com/asz/status/258995374847565825|title = Tweet showing all ECMAScript 5.1 tests passing on the screen of a Nashorn developers' computer}}</ref>

With the release of Java 11, Nashorn was deprecated citing challenges to maintenance, and has been removed from JDK 15 onwards.<ref>{{cite web

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| access-date=2018-09-25}}</ref><ref>{{cite web |url=https://openjdk.java.net/jeps/372 |title=JEP 372: Remove the Nashorn JavaScript Engine |date=2020-01-10 |access-date=2020-07-22}}</ref>

Nashorn development [https://github.com/openjdk/nashorn continues on GitHub] as a standalone [https://openjdk.java.net/projects/nashorn/ OpenJDK project] and the [https://mvnrepository.com/artifact/org.openjdk.nashorn/nashorn-core separate release] can be used in Java projectprojects from Java 11 and up.

==Name==

[[wikt:Nashorn|''Nashorn'']] {{IPA-|de|ˈnaːsˌhɔɐ̯n|}} ("nahss-horn") is the German translation of [[rhinoceros]], a play on words on [[Rhino (JavaScript engine)|Rhino]], the name of a JavaScript engine implemented in Java and provided by [[Mozilla Foundation]]. The latter gets its name from the animal on the cover of the JavaScript book from [[O'Reilly Media]].<ref>{{cite web |url=http://www.oreilly.com/catalog/jscript5/ |title=JavaScript: The Definitive Guide, 5th Edition |publisher=O'Reilly Media, Inc |access-date=2012-01-31}}</ref>

== Performance ==

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{{Portal|Free and open-source software}}

*[[List of ECMAScript engines]]

*[[List of JVM languages]]

==References==