Without threading, developers can build scalable servers using an abridged version of event-driven programming that uses callbacks to indicate when a task is finished.

Node.js builds quick web servers in JavaScript by integrating event-driven programming into web servers. These design decisions attempt to maximize performance and scalability for real-time web applications with numerous input/output activities, for example, real-time communication programs and browser games. The event-driven design of Node.js supports asynchronous I/O. Thus, Node.js symbolizes a 'JavaScript everywhere' paradigm, bringing web application development under a single programming language rather than segregating it across server-side and client-side scripting languages. Node.js, an open-source, cross-platform back-end JavaScript runtime environment that operates on a JavaScript Engine and executes JavaScript code outside a web browser, develops scalable network applications.ĭevelopers use JavaScript to create command-line tools and for server-side scripting, which produces dynamic web page content on the server before the page is transmitted to the user's web browser through Node.js.

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