A JavaScript engine is a specialized software program that processes JavaScript, especially for web browsers. In 2009, major web browsers released versions that included a specialized JavaScript engine to speed up web browsing on pages with JavaScript. However, the first engine was the SpiderMonkey engine developed at Netscape, but inherited by the Mozilla Foundation. Applications of the technology include Apple Safari 4's Nitro, Google Chrome's V8 and Mozilla Firefox 3.5's TraceMonkey.

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  • A JavaScript engine is a specialized software program that processes JavaScript, especially for web browsers. In 2009, major web browsers released versions that included a specialized JavaScript engine to speed up web browsing on pages with JavaScript. However, the first engine was the SpiderMonkey engine developed at Netscape, but inherited by the Mozilla Foundation. Applications of the technology include Apple Safari 4's Nitro, Google Chrome's V8 and Mozilla Firefox 3.5's TraceMonkey. Released June 30, 2009 Firefox 3.5 includes the optimization technique which offered "performance improvements ranging between 20 and 40 times faster in some cases" On June 2, 2008 the WebKit development team announced SquirrelFish — a then new JavaScript engine that vastly improves Safari's speed at interpreting scripts. The engine was one of the new features in Safari 4, released for developers on June 11, 2008. The final JavaScript engine was called Nitro. A public beta of Safari 4 was released on February 24, 2009. In 2008, the Google Chrome was praised for its JavaScript performance, but other browsers with JavaScript engines soon surpassed it, but later Google Chrome won in the races of better performance. Chrome's strength is its application performance and JavaScript processing speed, both of which were independently verified by multiple websites to be the fastest amongst the major browsers of its time. With the advent of WebKit's Squirrelfish Extreme and Mozilla's TraceMonkey JavaScript virtual machines, Chrome's JavaScript execution performance has been found to be slower. Google responded with the Danish developed V8 (JavaScript engine) which boosted JS performance in Google Chrome 2. Note that although "JavaScript" contains the word "Java" and a JavaScript engine can be written in Java, JavaScript itself should not be confused with the Java programming language .
  • Un intérprete de JavaScript (también conocido como motor de JavaScript o implementación de JavaScript) es un intérprete informático que interpreta el código fuente en lenguaje JavaScript y ejecuta un script acorde a las instrucciones dadas. El primer intérprete de JavaScript fue creado por Brendan Eich, mientras trabajaba en Netscape Communications Corporation, para ser incluido en el navegador web Netscape Navigator. Este intérprete es conocido con el nombre en clave SpiderMonkey y su desarrollo se mantiene gracias a la Fundación Mozilla. Los programas anfitrión más comunes para JavaScript son los navegadores web. Los navegadores web generalmente usan una Application Programming Interface (API) pública para crear objetos del anfitrión (del inglés host objects) reflejados en el DOM de un documento y accesibles a través de JavaScript. Un servidor web es otra aplicación informática en que se suele integrar un intérprete de JavaScript. Un servidor web JavaScript reflejaría en objetos los pedidos y respuestas hechos sobre el protocolo HTTP, permitiendo a una aplicación en JavaScript utilizar esa información para crear páginas web dinámicamente.
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rdfs:comment
  • A JavaScript engine is a specialized software program that processes JavaScript, especially for web browsers. In 2009, major web browsers released versions that included a specialized JavaScript engine to speed up web browsing on pages with JavaScript. However, the first engine was the SpiderMonkey engine developed at Netscape, but inherited by the Mozilla Foundation. Applications of the technology include Apple Safari 4's Nitro, Google Chrome's V8 and Mozilla Firefox 3.5's TraceMonkey.
  • Un intérprete de JavaScript (también conocido como motor de JavaScript o implementación de JavaScript) es un intérprete informático que interpreta el código fuente en lenguaje JavaScript y ejecuta un script acorde a las instrucciones dadas. El primer intérprete de JavaScript fue creado por Brendan Eich, mientras trabajaba en Netscape Communications Corporation, para ser incluido en el navegador web Netscape Navigator.
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  • JavaScript engine
  • Intérprete de JavaScript
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