Node.js came into existence when its creator Ryan Dahl, understanding the power of V8, powered the Chrome browser and extended it so that it can run on your machine as a standalone application.
Another part of the definition on the official Node.js website says,Node.js uses an event driven, non-blocking I/O model that makes it lightweight and efficient.
I/O refers to input/output and this is where the additional functionality of Node.js comes into play. We can read and edit local files in Node.js and also do an HTTP request to an API.
The earlier backend systems like PHP and ASP used to block the program till a network request was complete. But it was completely changed by Node.JS, which sends the request and then goes to the next line of code. So, it is non-blocking and faster than the earlier backend technologies.
But it is a single-threaded technology and that is where it has some limitations, whereas Java shines because of it being multi-threaded.
Yet another part of the official definition on the Node.js website says,Node.js package ecosystem, npm is the largest ecosystem of open-source libraries in the world.
Over the past decade, an amazing community of open-source enthusiasts have created more than 1 million npm packages, which enhance the capabilities of Node.js.
It is completely open-source and anyone can use it, as it has an MIT licence, for developing server-side and networking applications. It can run on all three Operating Systems i.e., Mac OS, Windows, and Linux.
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