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Q.  Write the to code find the duplicate character in the string using javascript Input: "sonu" Output: {s:1, o:1,n:1, u:1} function findDuplicate(str) { let obj = {} for (let i =0; i

How to create multiple thread in nodejs?   Since node is a single threaded process, how to make use of all CPUs? Node.js is a single threaded language which in background uses multiple threads to execute asynchronous code. Node.js is non-blocking…

How to implement Memcached in Node.js? Memcached: is a general-purpose distributed memory caching system. It is often used to speed up dynamic database-driven websites by caching data and objects in RAM to reduce the number of times an external da…

How to upload file in Node.js? express : Popular web framework built on top of Node.js, used for creating REST-API. body-parser : Parse incoming request bodies in a middleware multer : Middleware for handling multipart/form-data — file uploads 1. …

Explain the terms body-parser, cookie-parser, morgan, nodemon, pm2, serve-favicon, cors, dotenv, fs-extra, moment in Express JS?   Explain the terms body-parser, cookie-parser, morgan, nodemon, pm2, serve-favicon, cors, dotenv, fs-extra, moment in …