Asynchronous or non-blocking means, handling events without interrupting the main thread.It can handle many requests concurrently using Event Loop, for each connection, the callback is fired, but if there is no work to be done Node will remain asleep.Node.js is Event-driven, non-blocking (asynchronous) I/O, Non-blocking execution enables it one of the fastest language for building web applications today.It’s an environment where the language can get interpreted. running directly on a computer or server OS). The runtime is basically enabled us to use javascript outside of a browser context (i.e. The creator of Node.js, Ryan Dahl, took Chrome’s V8 engine and built a runtime for it to work on a server. The browser’s engine like Chrome’s V8, Mozilla’s SpiderMonkey, IE’s Chakra takes JavaScript code and compiles it into the machine code. We can develop various types of applications like Command line applications, Web applications, REST API and Web server, etc. Node.js allows building scalable server-side applications using JavaScript.
Node.js® is a JavaScript runtime built on Chrome’s V8 JavaScript engine. Node.js is an open-source, cross-platform, runtime environment that enables developers to write server-side applications in javascript. So Let’s start with some important concepts of Node – Express app with an introduction of Node.js. Here we will start our discussion by building an understanding of Nodejs concepts like what is node.js? How does node.js work? its benefits and then create our app. I will provide a step by step detailed guide with examples and a required screenshot of code which will help you to understand the code and concepts.
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In this article, you will learn how to create your first Node.js app with Express.
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