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This article mainly introduces "what is the concept of engine in javascript". In daily operation, I believe that many people have doubts about the concept of engine in javascript. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "what is the concept of engine in javascript?" Next, please follow the editor to study!

The javascript engine is a virtual machine that specializes in processing JavaScript scripts and is generally included in web browsers. SpiderMonkey is the first javascript engine.

This article operating environment: windows10 system, javascript 1.8.5, thinkpad T480 computer.

The JavaScript engine is a virtual machine that specializes in processing JavaScript scripts and is generally included in web browsers.

The main web browser JavaScript engines are as follows:

Mozilla

SpiderMonkey, the first JavaScript engine, written by Brendan Eich during Netscape Communications, is used in Mozilla Firefox version 1.0 to 3.0.

Rhino, managed by the Mozilla Foundation, is open source and written entirely in Java.

TraceMonkey, an engine based on just-in-time compilation, part of the code is taken from the Tamarin engine and used for Mozilla Firefox version 3.5 and 3.6.

JaegerMonkey, German J ä ger was originally intended for hunters, combined with tracking and combination of code technology to greatly improve performance, some of the technology by chiseling V8, JavaScriptCore, WebKit, for Mozilla Firefox version 4.0 and above.

Google

V8, open source, developed by Google Denmark, is part of the Chrome browser.

Microsoft

Chakra (JScript engine), translated as Chakra in Chinese, is used in the 32-bit version of Internet Explorer 9.

Opera

Linear A for Opera version 4.0v6.1.

Linear B for Opera version 7.0v9.2.

Futhark for Opera version 9.5v10.2.

Carakan, written by Opera Software, has been in use since the Opera10.50 version.

Other

KJS,KDE 's ECMAScript/JavaScript engine, originally developed by Harri Porten, is used in the Konqueror web browser of the KDE project.

Narcissus, open source, written by Brendan Eich (he also helped write the first SpiderMonkey).

Tamarin, written by Adobe Labs, the engine used by Flash Player 9.

Nitro (formerly SquirrelFish), written for Safari 4.

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