Nicholas C. Zakas • 3/26/2024

What's the difference between JavaScript engines and JavaScript runtimes?

This article clarifies the often-confused terms 'JavaScript engine' and 'JavaScript runtime.' It defines ECMAScript as the core language specification and explains that a JavaScript engine (e.g., V8) implements ECMAScript, while a runtime (e.g., Node.js, browsers) is a host environment that embeds an engine and provides additional APIs (like the DOM or file system access) for I/O and other operations.

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#JavaScript #Node.js #v8