With the coming of Node.js, JavaScript has come to the forefront. It is bound to happen since it is already a well-known programming language used by developers in browsers. And, with Node.js, it has found a way to server-side implementation thus reducing the complexity of using two different languages at both ends. Today, Node.js offers one of the most innovative solutions to building servers and web/mobile applications. Its single-threaded event looping and asynchronous, non-blocking input/output processing feature distinguish it from other runtime environments.