Node.JS Interview Questions

41.How will you delete a file using Node? Following is the syntax of the method to delete a file: fs.unlink(path, callback) Parameters Here is the description of the parameters used: path – This is the file name including path. callback…

Read More

31.What are streams? Streams are objects that let you read data from a source or write data to a destination in continous fashion.

Read More

21.What is Event Loop? Node js is a single threaded application but it support concurrency via concept of event and callbacks. As every API of Node js are asynchronous and being a single thread, it uses async function calls to…

Read More

11.What is global installation of dependencies? Globally installed packages/dependencies are stored in <user-directory>/npm directory. Such dependencies can be used in CLI (Command Line Interface) function of any node.js but can not be imported using require() in Node application directly. To…

Read More

1.What is Node.js? Node.js is a web application framework built on Google Chrome’s JavaScript Engine(V8 Engine). Node.js comes with runtime environment on which a Javascript based script can be interpreted and executed (It is analogus to JVM to JAVA byte…

Read More