JavaScript by Example

Node.js and npm

Node.js is a JavaScript runtime built on Chrome's V8 engine. It lets developers run JavaScript outside of the browser. Due to the non-blocking I/O model of Node.js, it is widely used for building data-intensive, real-time applications. You can use it to build backend for your web application in JavaScript, just like PHP, Ruby, or other server-side languages.

One great advantage of Node.js is that it lets you organize your code into modules. A module is a set of code used to perform a specific function. So far, we have included the JavaScript code one after another inside the <script> tag in the browser. But in Node.js, we can simply call the dependency inside the code by creating the reference to the module. For example, if ...