Nashorn (JavaScript engine)

The project was announced first at the JVM language summit in July 2011,{{cite web

| url=http://openjdk.java.net/projects/mlvm/jvmlangsummit/agenda.html

| title=JVM Language Summit — Agenda

| date=July 2011

| publisher=Oracle Corporation

| access-date=2011-07-24

| 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

}}{{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'

| last=Saab

| first=Georges

| date=2011-07-19

| publisher=Oracle Corporation

| access-date=2011-07-24

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

| archive-date=2012-04-23

| url-status=dead

}} and then confirmed at JavaOne in October 2011.{{cite web

| url=http://www.infoworld.com/d/application-development/oracle-prepping-its-nashorn-javascript-engine-175159

| title=Oracle prepping its Nashorn JavaScript engine

| last=Krill|first=Paul

| date=2011-10-05

| publisher=InfoWorld

| access-date=2011-10-08}}

On November 21, 2012, Oracle formally announced the open sourcing of the Nashorn source on the OpenJDK repository. The project aim will be to allow embedding JavaScript in Java applications via JSR-223 and to develop standalone JavaScript applications.{{cite web

| url=http://mail.openjdk.java.net/pipermail/announce/2012-November/000139.html

| title=CFV: New Project: Nashorn

| last=Coomes|first=John

| date=2012-11-21

| publisher=Oracle Corporation

| quote=I hereby propose the creation of the Nashorn Project with Jim Laskey as the Lead and HotSpot group as the sponsoring Group. In accordance with the OpenJDK guidelines [1], we would like to start a new project to implement a lightweight high-performance JavaScript runtime in Java with a native JVM

| access-date=2012-11-24}} On December 21, 2012, Oracle announced Nashorn source was publicly released in the OpenJDK repository.{{cite web

| url=https://blogs.oracle.com/nashorn/entry/open_for_business

| title=Open for business

| last=Laskey|first=J

| date=2012-12-21

| publisher=Oracle Corporation

| access-date=2012-12-21}}

It provides a 100% support of ECMAScript 5.1.{{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}} It was the first JavaScript implementation to achieve 100% pass rate on the ECMAScript 5.1 test suite.{{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}}

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

| url=http://openjdk.java.net/jeps/335

| title=JEP 335: Deprecate the Nashorn JavaScript Engine

| date=2017-07-17

| access-date=2018-09-25}}{{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}}

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 projects from Java 11 and up.

Nashorn {{IPA|de|ˈnaːsˌhɔɐ̯n|}} ("nahss-horn") is the German translation of rhinoceros, a play on words on 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.{{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}}

According to Oracle benchmarks, Nashorn performance is several orders of magnitude faster than the alternative Rhino JavaScript engine.{{cite web

| url=https://blogs.oracle.com/nashorn/entry/nashorn_performance_work_in_the

| title=Nashorn Architecture and Performance Improvements in the Upcoming JDK 8u40 Release

| date=2014-12-12

| publisher=Oracle Corporation

| access-date=2015-09-06}}

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

• List of ECMAScript engines

{{Reflist|30em}}

• {{URL|2=GitHub project page |https://github.com/openjdk/nashorn/}}
• {{URL|2=Oracle blog (mostly defunct)|https://blogs.oracle.com/nashorn/}}

{{ECMAScript}}

{{Oracle FOSS}}

Category:JVM programming languages

Category:JavaScript engines

Category:Cross-platform software

Category:Software using the GPL linking exception

Category:Oracle software