What is the commonly used engine for javascript?

Commonly used engines for js are: 1. "V8", the engine in Google; 2. "SpiderMonkey", the engine in Firefox; 3. "Chakra", the engine in IE; 4. "ChakraCore" , the engine in Edge; 5. "SquirrelFish", the engine in Safari.

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

As a scripting language, JavaScript code cannot run independently. Usually we need to use a browser to run JavaScript code. All web browsers support JavaScript.

In addition to being executed in the browser, JavaScript code can also be executed on the server or in a device equipped with a JavaScript engine. The reason why the browser can run JavaScript code is because the JavaScript engine is embedded in the browser.

The JavaScript engine is a virtual machine that specializes in processing JavaScript scripts. It is usually included in a web browser.

Common JavaScript engines are:

• V8: JavaScript engine in Chrome and Opera;

• SpiderMonkey: JavaScript engine in Firefox;

• Chakra: JavaScript engine in IE;

• ChakraCore: JavaScript engine in Microsoft Edge;

• SquirrelFish: JavaScript engine in Safari .

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