Question : Why You should use Node JS? Answer : Following are the major factor influencing the use of the NodeJS Popularity : The popularity can be important factor, as it has more user base and hence solution of any common problem faced by developer can found easily online, without any professional help. JavaScript at all levels of the stack : A common language for frontend and backend offers several potential benefits: The same programming staff can work on both ends of the wire Code can be migrated between server and client more easily Common data formats (JSON) exist between server and client Common software tools exist for server and client Common testing or quality reporting tools for server and client When writing web applications, view templates can be used on both sides Leveraging Google's investment in V8 Engine. Leaner, asynchronous, event-driven model Microservice architecture Question : example of node JS code? Answer : const fs = require('fs'); const uti