Node.js enables development of fast web servers in JavaScript using event-driven programming.[17] Developers can create scalable servers without using threading by using a simplified model that uses callbacks to signal the completion of a task.[17][page needed] Node.js connects the ease of a scripting language (JavaScript) with the power of Unix network programming.[17]
Node.js was built on top of Google’s V8 JavaScript engine since it was open-sourced under the BSD license, and it contains comprehensive support for fundamental protocols such as HTTP, DNS and TCP.[14] JavaScript’s existing popularity made Node.js accessible to the
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