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Which is a fast C++ based JavaScript interpreter?

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Which is a fast C++ based JavaScript interpreter?

(a) Node

(b) Sockets

(c) Processors

(d) Closures

The question was posed to me in an online quiz.

Question is from Asynchronous I/O with Rhino topic in portion Server-Side and Client-Side Scripting of JavaScript

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Best answer
Correct choice is (a) Node

The best explanation: Node.js is an open-source, cross-platform JavaScript run-time environment that executes JavaScript code outside of a browser. Node is a fast C++-based JavaScript interpreter with bindings to the low-level Unix APIs for working with processes, files, network sockets, etc., and also to HTTP client and server APIs.

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