Here is the collection of most frequently asked top 50 Node js interview questions.
What is Node Js?
NodeJs is an opensource library available for creating server-side applications. It is built over the Chrome V8 platform.
What is Module.export in Node Js?
Module.export is used when you want to use any object, function into another NodeJs file.
What is mocha in Node js?
Mocha is a testing framework in NodeJS which are used for creating unit test cases in NodeJS.
What are the promises?
A promise in Node application is an action that can be either success or failure. If the web request is able to complete its promise then, its a success or its a failure. We can use chaining in promises.
How do we handle errors in Node Js?
How do we use async functions in Node Js?
How do we test a Node Js application?
We can use the testing framework like Mocha for testing the NodeJS applications