Nodejs definition

English wikipedia definition

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Node.js is an open-source, cross-platform JavaScript run-time environment that executes JavaScript code outside of a browser.

Node.js lets developers use JavaScript to write command line tools and for server-side scripting—running scripts server-side to produce dynamic web page content before the page is sent to the user’s web browser.

Consequently, Node.js represents a “JavaScript everywhere” paradigm, unifying web application development around a single programming language, rather than different languages for server side and client side scripts.

Though .js is the standard filename extension for JavaScript code, the name “Node.js” does not refer to a particular file in this context and is merely the name of the product.

Node.js has an event-driven architecture capable of asynchronous I/O.

These design choices aim to optimize throughput and scalability in web applications with many input/output operations, as well as for real-time Web applications (e.g., real-time communication programs and browser games).

The Node.js distributed development project, governed by the Node.js Foundation, is facilitated by the Linux Foundation’s Collaborative Projects program.

French wikipedia definition

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Node.js est une plateforme logicielle libre et événementielle en JavaScript orientée vers les applications réseau qui doivent pouvoir monter en charge.

Elle utilise la machine virtuelle V8 et implémente sous licence MIT les spécifications CommonJS.

Parmi les modules natifs de Node.js, on retrouve http qui permet le développement de serveur HTTP .

Il est donc possible de se passer de serveurs web tels que Nginx ou Apache lors du déploiement de sites et d’applications web développés avec Node.js.

Concrètement, Node.js est un environnement bas niveau permettant l’exécution de JavaScript côté serveur.